Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO2020107423 - PROCÉDÉ, DISPOSITIF ET SUPPORT LISIBLE PAR ORDINATEUR POUR EFFECTUER UNE MESURE SINR

Document

Description

Title of Invention 0001   0002   0003   0004   0005   0006   0007   0008   0009   0010   0011   0012   0013   0014   0015   0016   0017   0018   0019   0020   0021   0022   0023   0024   0025   0026   0027   0028   0029   0030   0031   0032   0033   0034   0035   0036   0037   0038   0039   0040   0041   0042   0043   0044   0045   0046   0047   0048   0049   0050   0051   0052   0053   0054   0055   0056   0057   0058   0059   0060   0061   0062   0063   0064   0065   0066   0067   0068   0069   0070   0071   0072   0073   0074   0075   0076   0077   0078   0079   0080   0081   0082   0083   0084   0085   0086   0087   0088   0089   0090   0091   0092   0093   0094   0095   0096   0097   0098   0099   0100   0101   0102   0103   0104   0105   0106   0107   0108   0109   0110   0111   0112   0113   0114   0115   0116   0117   0118   0119   0120   0121   0122   0123   0124   0125   0126   0127   0128   0129   0130   0131  

Claims

1   2   3   4   5   6   7   8   9   10   11   12   13   14   15   16   17   18   19   20   21   22   23  

Drawings

1A   1B   2   3A   3B   4   5A   5B   6   7A   7B   8   9A   9B   10   11  

Description

Title of Invention : METHOD, DEVICE AND COMPUTER READABLE MEDIUM FOR SINR MEASUREMENT

TECHNICAL FIELD

[0001]
Embodiments of the present disclosure generally relate to the field of communication, and in particular, to methods, devices and computer readable media for signal to interference-and-noise ratio (SINR) measurement.

BACKGROUND

[0002]
Communication technologies have been developed in various communication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example of an emerging communication standard is new radio (NR) , for example, 5G radio access. NR is a set of enhancements to the Long Term Evolution (LTE) mobile standard promulgated by Third Generation Partnership Project (3GPP) . It is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using OFDMA with a cyclic prefix (CP) on the downlink (DL) and on the uplink (UL) as well as support beamforming, multiple-input multiple-output (MIMO) antenna technology, and cartier aggregation.
[0003]
In NR, a terminal device (e.g. user equipment, UE) and a network device (e.g. gNodeB) can communicate via a plurality of beams, which is called multi-beam operation. To enhance the multi-beam operation, it has been agreed that L1-SINR measurement should be supported in NR. Therefore, there is a need to specify the measurement and reporting of L1-SINR, particularly for beam management purpose.
[0004]
SUMMARY
[0005]
In general, example embodiments of the present disclosure provide methods, devices and computer readable media for beam information based positioning.
[0006]
In a first aspect, there is provided a method at a terminal device. The method comprises performing channel measurement on a first signal, the first signal being received from a network device in a beam with a first resource of a first group of resources; determining, based on the first resource, a second resource from a second group of resources configured for interference measurement, the second group of resources being different from the first group of resources; and performing the interference measurement on a second signal, the second signal being received from the network device in the beam with the second resource.
[0007]
In a second aspect, there is provided a method implemented at a terminal device. The method comprises determining first and second ports associated with a resource configured by the network device, the first port being configured for channel measurement and the second port being configured for interference measurement; and performing the channel measurement on a first stream of a signal received from a network device via the first port and interference measurement on a second stream of the signal received from the network device via the second port.
[0008]
In a third aspect, there is provided a method implemented at a terminal device. The method comprises performing channel and interference measurements on signals received from a network device with a group of resources; selecting, based on the channel and interference measurements, a first resource and a second resource from the plurality of resources, the first resource being associated with the channel measurement and the second resource being associated with the interference measurement; and transmitting, to a network device, indications of the first and second resources.
[0009]
In a fourth aspect, there is provided a method implemented at a network device. The method comprises transmitting, to a terminal device, signals in a plurality of beams with a group of resources, each of the plurality of beams corresponding to one resource in the group of resources; receiving, from the terminal device, indications of first and second resources of the group of resources, the first resource being associated with a channel measurement performed by the terminal device and the second resource being associated with an interference measurement performed by the terminal device; and determining first and second beams of the plurality of beams to enable communication between the network device and the terminal device via the first beam and communication between the network device and a further terminal device via the second beam, the first beam corresponding to the first resource and the second beam corresponding to the second resource.
[0010]
In a fifth aspect, there is provided a terminal device. The device includes a processor; and a memory coupled to the processing unit and storing instructions thereon, the instructions, when executed by the processing unit, causing the device to perform the method according to the first aspect.
[0011]
In a sixth aspect, there is provided a terminal device. The device includes a processor; and a memory coupled to the processing unit and storing instructions thereon, the instructions, when executed by the processing unit, causing the device to perform the method according to the second aspect.
[0012]
In a seventh aspect, there is provided a terminal device. The device includes a processor; and a memory coupled to the processing unit and storing instructions thereon, the instructions, when executed by the processing unit, causing the device to perform the method according to the third aspect.
[0013]
In an eighth aspect, there is provided a network device. The device includes a processor; and a memory coupled to the processing unit and storing instructions thereon, the instructions, when executed by the processing unit, causing the device to perform the method according to the fourth aspect.
[0014]
In a ninth aspect, there is provided a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to the first aspect.
[0015]
In a tenth aspect, there is provided a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to the second aspect.
[0016]
In an eleventh aspect, there is provided a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to the third aspect.
[0017]
In a twelfth aspect, there is provided a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to the fourth aspect.
[0018]
Other features of the present disclosure will become easily comprehensible through the following description.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019]
Through the more detailed description of some embodiments of the present disclosure in the accompanying drawings, the above and other objects, features and advantages of the present disclosure will become more apparent, wherein:
[0020]
Fig. 1A is a schematic diagram of a communication environment in which embodiments of the present disclosure can be implemented;
[0021]
Fig. 1B is a schematic diagram illustrating a process for channel and interference measurements;
[0022]
Fig. 2 shows a flowchart of an example method in accordance with some embodiments of the present disclosure;
[0023]
Fig. 3A shows a schematic diagram illustrating resources configured for CM and IM according to some embodiments of the present disclosure;
[0024]
Fig. 3B shows a schematic diagram illustrating a correspondence relationship between CMRs and IMRs according to some embodiments of the present disclosure;
[0025]
Fig. 4 shows a schematic diagram illustrating resources configured for CM and IM according to some embodiments of the present disclosure;
[0026]
Fig. 5A shows a schematic diagram illustrating resources configured for CM and IM according to some embodiments of the present disclosure;
[0027]
Fig. 5B shows a schematic diagram illustrating a correspondence relationship between CMRs and IMRs according to some embodiments of the present disclosure;
[0028]
Fig. 6 shows a flowchart of an example method in accordance with some embodiments of the present disclosure;
[0029]
Fig. 7A shows a schematic diagram illustrating ports allocated for CM and IM according to some embodiments of the present disclosure;
[0030]
Fig. 7B shows a schematic diagram illustrating a correspondence relationship between CMR and IMR according to some embodiments of the present disclosure;
[0031]
Fig. 8 shows a flowchart of an example method in accordance with some embodiments of the present disclosure;
[0032]
Fig. 9A shows a schematic diagram illustrating a group of resources configured for SINR measurement according to some embodiments of the present disclosure;
[0033]
Fig. 9B shows a schematic diagram illustrating a group of resources configured for SINR measurement according to some embodiments of the present disclosure;
[0034]
Fig. 10 shows a flowchart of an example method in accordance with some embodiments of the present disclosure; and
[0035]
Fig. 11 is a simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure.
[0036]
Throughout the drawings, the same or similar reference numerals represent the same or similar element.

DETAILED DESCRIPTION

[0037]
Principle of the present disclosure will now be described with reference to some example embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitations as to the scope of the disclosure. The disclosure described herein can be implemented in various manners other than the ones described below.
[0038]
In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0039]
As used herein, the term “network device” or “base station” (BS) refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate. Examples of a network device include, but not limited to, a Node B (NodeB or NB) , an Evolved NodeB (eNodeB or eNB) , a NodeB in new radio access (gNB) a Remote Radio Unit (RRU) , a radio head (RH) , a remote radio head (RRH) , a low power node such as a femto node, a pico node, and the like. For the purpose of discussion, in the following, some embodiments will be described with reference to gNB as examples of the network device.
[0040]
As used herein, the term “terminal device” refers to any device having wireless or wired communication capabilities. Examples of the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, image capture devices such as digital cameras, gaming devices, music storage and playback appliances, or Internet appliances enabling wireless or wired Internet access and browsing and the like.
[0041]
As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term “includes” and its variants are to be read as open terms that mean “includes, but is not limited to. ” The term “based on” is to be read as “based at least in part on. ” The term “one embodiment” and “an embodiment” are to be read as “at least one embodiment. ” The term “another embodiment” is to be read as “at least one other embodiment. ” The terms “first, ” “second, ” and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.
[0042]
In some examples, values, procedures, or apparatus are referred to as “best, ” “lowest, ” “highest, ” “minimum, ” “maximum, ” or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
[0043]
As mentioned above, multi-beam operation is supported in NR and thus beam management in NR is also specified. For example, technical specification (TS) 38.214 has specified the following: If the UE is configured with a CSI-ReportConfig with reportQuantity set to "cri-RSRP" , or "none" and if the CSI-ResourceConfig for channel measurement (higher layer parameter resourcesForChannelMeasurement) contains a NZP-CSI-RS-ResourceSet that is configured with the higher layer parameter repetition and without the higher layer parameter trs-Info, the UE can only be configured with the same number (1 or 2) of ports with the higher layer parameter nrofPorts for all CSI-RS resources within the set.
[0044]
Conventionally, reference signal received power (RSRP) is measured to determine a channel quality. In order to enhance the multi-beam operation, L1-SINR measurement will be supported in NR. For example, secondary synchronization SINR (SS-SINR) is defined as the linear average over the power contribution (in [W] ) of the resource elements carrying secondary synchronization signals divided by the linear average of the noise and interference power contribution (in [W] ) over the resource elements carrying secondary synchronization signals within the same frequency bandwidth.
[0045]
As another example, channel state information SINR (CSI-SINR) is defined as the linear average over the power contribution (in [W] ) of the resource elements carrying CSI reference signals divided by the linear average of the noise and interference power contribution (in [W] ) over the resource elements carrying CSI reference signals reference signals within the same frequency bandwidth.
[0046]
To determine the SINR, channel measurement (CM, which may also be referred to as signal measurement) and interference measurement (IM, which may also be referred to as interference or noise measurement) need to be perform at the terminal device, e.g. at UE. CSI resource and Synchronization Signal/Physical Broadcast Channel block (SSB) resource may be configured for SINR measurement. For example, TS 38.214 has specified that the UE may assume that the non-zero power CSI reference signal (NZP CSI-RS) resource (s) for channel measurement and the CSI-IM resource (s) for interference measurement configured for one CSI reporting are resource-wisely quasi-co-located with respect to ′QCL-TypeD′ (When two different signals share the same QCL type, they share the same indicated properties. QCL-TypeD means spatial receiving (RX) beam) . When NZP CSI-RS resource (s) is used for interference measurement, the UE may assume that the NZP CSI-RS resource for channel measurement and the CSI-RS resource and/or NZP CSI-RS resource (s) for interference measurement configured for one CSI reporting are quasi co-located with respect to ′QCL-TypeD′ .
[0047]
Further, if interference measurement is performed on CSI-IM, each CSI-RS resource for channel measurement is resource-wise associated with a CSI-IM resource by the ordering of the CSI-RS resource and CSI-IM resource in the corresponding resource sets. The number of CSI-RS resources for channel measurement equals to the number of CSI-IM resources.
[0048]
Regarding SINR measurement and reporting, there still remain several issues to be studied. For example, there is a need to specify the reporting content, e.g. whether CSI resource indicator/SSB resource indicator (CRI/SSBRI) is reported, whether differential group/non-group reporting is applied, and whether L1-RSRP is reported. The interference measurement mechanism also needs to be studied.
[0049]
According to embodiments of the present disclosure, there is proposed a solution for SINR measurement. New resource configuration for SINR based beam reporting is proposed. In an aspect, different groups of resources are configured as resources for CM, which may also called channel measurement resource (CMR) and as resources for IM, which may also called interference measurement resource (IMR) , respectively. In another aspect, different antenna ports associated with a resource configured by a network device are configured for channel measurement and interference measurement, respectively. In a further aspect, CM and IM are performed on signals received with each resource of a group of resources and particular resources are selected based on the CM and IM to report the channel quality to the network device. In this way, interference measurement for SINR based beam reporting is enabled.
[0050]
Principle and implementations of the present disclosure will be described in detail below with reference to Figs. 1-11.
[0051]
Fig. 1A shows an example communication network 100 in which embodiments of the present disclosure can be implemented. The network 100 includes a network device 110 and a terminal device 120 served by the network device 110. The serving area of the network device 110 is called as a cell 102. It is to be understood that the number of network devices and terminal devices is only for the purpose of illustration without suggesting any limitations. The network 100 may include any suitable number of network devices and terminal devices adapted for implementing embodiments of the present disclosure. Although not shown, it is to be understood that one or more terminal devices may be located in the cell 102 and served by the network device 110.
[0052]
In the communication network 100, the network device 110 can communicate data and control information to the terminal device 120 and the terminal device 120 can also communication data and control information to the network device 110. A link from the network device 110 to the terminal device 120 is referred to as a downlink (DL) or a forward link, while a link from the terminal device 120 to the network device 110 is referred to as an uplink (UL) or a reverse link.
[0053]
Depending on the communication technologies, the network 100 may be a Code Division Multiple Access (CDMA) network, a Time Division Multiple Address (TDMA) network, a Frequency Division Multiple Access (FDMA) network, an Orthogonal Frequency-Division Multiple Access (OFDMA) network, a Single Carrier-Frequency Division Multiple Access (SC-FDMA) network or any others. Communications discussed in the network 100 may use conform to any suitable standards including, but not limited to, New Radio Access (NR) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , cdma2000, and Global System for Mobile Communications (GSM) and the like. Furthermore, the communications may be performed according to any generation communication protocols either currently known or to be developed in the future. Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols. The techniques described herein may be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For clarity, certain aspects of the techniques are described below for LTE, and LTE terminology is used in much of the description below.
[0054]
In embodiments, the network device 110 is configured to implement beamforming technique and transmit signals to the terminal device 120 in a plurality of transmitting (TX) beams, one of which is shown as a beam 105. The terminal device 120 is configured to receive the signals transmitted by the network device 110 in a plurality of RX beams, one of which is shown as a beam 106.
[0055]
Fig. 1B is a schematic diagram illustrating a process 150 for channel and interference measurements. The network device 110 transmits 155 reference signals such as CSI-RSs to the terminal device 120. Alternatively, SSB may also be used for channel measurement. A plurality of reference signals may be transmitted 155 both for channel measurement and interference measurement. The terminal device 120 receives the reference signals with CMRs and IMRs configured by the network device 110. The configurations of the CMRs and IMRs may be signaled to the terminal device 120 by, for example, Radio Resource Control (RRC) signaling, media access control (MAC) control element (CE) or downlink control information (DCI) . The terminal device 120 performs 160 channel and interference measurements on the received reference signals to determine the channel quality (e.g. SINR) . Then the terminal device 120 transmits 165 to the network device 110 results of the channel and interference measurements, for example, in a CSI report.
[0056]
Implementations of the present disclosure will be described in detail below with reference to Figs. 2-11. Fig. 2 illustrates a flowchart of an example method 200 in accordance with some embodiments of the present disclosure. The method 200 can be implemented at the terminal device 120 shown in Fig. 1A. It is to be understood that the method 200 may include additional blocks not shown and/or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard. For the purpose of discussion, the method 200 will be described with reference to Fig. 1A.
[0057]
At block 210, the terminal device 120 performs channel measurement on a first signal. The first signal is received from a network device 110 in a beam with a first resource of a first group of resources. The first group of resources is configured by the network device 110 for channel measurement. Additionally, the terminal device 120 may perform channel measurements on other signals received with other resources of the first group of resources. The term “group of resources” may refer to a resource set in some embodiments (e.g. the embodiments described with reference to Figs. 3A and 3B and Fig. 4) and may refer to a subset of resources in some other embodiments (e.g. the embodiments described with reference to Figs. 5A and 5B) .
[0058]
In some embodiments, the first group of resources may be CSI resources, which may include CSI-RS resources and CSI-IM resources. Accordingly, the first signal may be a CSI-RS. In some other embodiments, the first group of resources may be SSB resources. Accordingly, the first signal may be a SSB. It is to be noted that other resource suitable for channel and interference measurement may also be configured by the network device 110.
[0059]
At block 220, the terminal device 120 determines, based on the first resource, a second resource from a second group of resources configured for interference measurement. The second group of resources is different from the first group of resources.
[0060]
In some embodiments, correspondence between resources in the first and second groups of resources may be preconfignred by the network device 110. For example, a resource correspondence relationship configured by the network device 110 may indicate a correspondence between indications of resources in the first group and indications of resources in the second group. In these embodiments, the terminal device 120 may determine a first indication of the first resource. The terminal device 120 may then select, based on the resource correspondence relationship, the second resource from the second group of resources. The second indication of the second resource may match the first indication of the first resource. The resource correspondence relationship may be considered as a resource-wise mapping between the resources in the first and second groups.
[0061]
In some embodiments, the first group of resources and the second group of resources belong to a same resource set. In this case, the first group of resources may be a subset of resources in a resource set and the second group of resources may be another subset of resources in that resource set. CSI resource set may be configured by the network device 110 for this purpose. Thus, the first resource may be a CSI resource in the resource set and the second resource is another CSI resource in that resource set. These embodiments will be described in detail below with reference to Figs. 5A and 5B.
[0062]
In some embodiments, the first group of resources and the second group of resources belong to different resource sets. For example, the first group of resources is a first resource set and the second group of resources is a second resource set. In some cases, the number of resources in the first resource set is equal to the number of resources in the second resource set. In these cases, the second resource may be determined based on the correspondence relationship configured by the network device 110, as described above. These embodiments will be described in detail below with reference to Fig. 4.
[0063]
In some cases, the number of resources in the first resource set is larger than the number of resources in the second resource set. In these cases, the correspondence relationship (or mapping) between resources in the first and second resource sets may be not configured by the network device 110 and thus the terminal device 120 may need to associate resources in the first resource set for CM with resources in the second resource set for IM. These cases will be described in detail below with reference to Figs. 3A and 3B.
[0064]
In embodiments where the first group of resources is a first resource set and the second group of resources is a second resource set, the first resource may comprise at least one of a CSI resource and a SSB resource, and the second resource may be a further CSI resource.
[0065]
At block 230, the terminal device 120 performs the interference measurement on a second signal. The second signal is received from the network device in the beam with the second resource. Since the CMR and IMR configured for one CSI reporting are quasi co-located with respect to ‘QCL-TypeD’ , the beam associated with the first resource and the beam associated with the second resource may be the same or, in other words, quasi co-located with each other with respect to ‘QCL-TypeD’ .
[0066]
In some embodiments, the terminal device 120 may determine a channel quality based on the channel and interference measurements. For example the terminal device 120 may determine a value of SINR based on the channel measurement performed at block 210 and interference measurements performed at block 230. The terminal device 120 may then transmit at least the channel quality to the network device 110. An indication of the first resource may also be transmitted along with the channel quality, for example, include in a CSI report. The indication of the first resource may be CRI or SSBI.
[0067]
As mentioned above, different configurations of CMRs and IMRs may be configured and used. Such embodiments now are described with reference to Figs. 3-5.
[0068]
In some embodiments, as mentioned above, the number of resources configured for channel measurement may be larger than the number of resources configured for interference measurement. Such embodiments are described with reference to Figs. 3A and 3B. Fig. 3A shows a schematic diagram 300 illustrating resources configured for CM and IM according to some embodiments of the present disclosure.
[0069]
As shown in Fig. 3A, a CSI resource set 301, which is configured by the network device 110 for channel measurement, comprises CSI resources 311-314. For purpose of discussion, CRI for CSI resource 311 may be 1, CRI for CSI resource 312 may be 2, CRI for CSI resource 313 may be 3 and CRI for CSI resource 314 may be 4. RX beams 321-324 are configured to be associated with CSI resources 311-314, respectively. Beam index 1-4 are shown to identify different RX beams. A CSI resource set 302, which is configured by the network device 110 for inference measurement, comprises CSI resources 315-316. In this case, CSI resources 315-316 are not preconfigured with any RX beam.
[0070]
The terminal device 120 may receive CSI-RSs from the network device 110 on each resource in the CSI resource set 301 and perform channel measurement on the received CSI-RSs. The terminal device 120 may select N (two, in the example shown) CSI resources from the CSI resource set 301 based on the channel measurement-. The selected N CSI resources may be based on the RSRP. The number N refers to the number of CSI resources, of which CRIs are to be reported to the network device 110, and is configured by the network device 110. In the example shown in Fig. 3A, CSI resources 311 and 313 are selected by the terminal device 120.
[0071]
Then, the terminal device 120 may associate the CSI resources 311 and 313 with the CSI resources in CSI resource set 302. The indications of the CSI resources 311 and 313, which in this case are the CRIs of the CSI resources 311 and 313, will be reported to the network device 110 such as in an CSI report, after the channel and interference measurements. The terminal device 120 may determine the order of the CRIs of the CSI resources 311 and 313 in for example the CSI report and determine the association between the resources in set 301 and set 302 based on the order.
[0072]
In the example shown in Fig. 3A, the terminal device 120 may determine that the CRI of the CSI resource 311 precedes the CRI of the CSI resource 313. In other words, the beam with an index of 1 will be the RX beam of the first reported CSI-RS resource and the beam with an index of 3 will be the RX beam of the second reported CSI-RS resource. Thus, the terminal device 120 may determine that CSI resource 315 (i.e., the first resource in set 302) is associated with the beam with an index of 1 and that CSI resource 316 (i.e., the second resource in set 302) is associated with the beam with an index of 3.
[0073]
Then, the terminal device 120 may receive CSI-RS on CSI resource 315 in the beam with an index of 1 and perform interference measurement accordingly. SINR may then be determined based on the channel measurement with the CSI resource 311 and the interference measurement with the CSI resource 315. The terminal device 120 may further receive CSI-RS on CSI resource 316 in the beam with an index of 3 and perform interference measurement accordingly.
[0074]
In the embodiments described with reference to Fig. 3A, the number of CMRs (for example, the number of resources in the set 301 for CM) Ks may be larger than or equal to the number of IMRs (for example, the number of resources on the set 302 for IM) Ki, and Ki may be larger than or equal to N.
[0075]
In the example shown in Fig. 3A, both the CMRs and IMRs are configured as CSI resources. In another example, a mixed configuration may be employed. For example, SSB resources may be configured by the network device 110 for channel measurement and CSI resources may be configured for interference measurement.
[0076]
Fig. 3B shows a schematic diagram 350 illustrating a correspondence relationship between CMRs and IMRs according to some embodiments of the present disclosure. CMRs 331-334 may correspond to each of the CSI resources 311-314, respectively, and IMRs 335-336 may correspond to each of the CSI resources 315-316, respectively. The correspondence relationship between the CMRs and IMRs is not predetermined by the network device 110 and thus the mapping between CMRs 331-334 and IMRs 335-336 will be determined by the terminal device 120 as described above with reference to Fig. 3A. In this example, the terminal device 120 may determine that the CMR 331 (CMR #1) is associated with the IMR 335 (IMR #3) and the CMR 333 (CMR #3) is associated with the IMR 336 (IMR #2) .
[0077]
In such embodiments, CSI resources for interference measurement associated with undesirable CSI resources for channel measurement may be avoided. Therefore, the reference signal overhead for SINR measurement can be reduced. For example, CMR 332 and CMR 334 are not associated with any IMR.
[0078]
In some embodiments, as mentioned above, the first group of resources for CM and the second group of resources for IM may be different resource sets with the same number of resources. Such embodiments are now described with reference to Fig. 4. Fig. 4 shows a schematic diagram 400 illustrating resources configured for CM and IM according to some embodiments of the present disclosure.
[0079]
More than one resource sets may be configured for beam measurement based on a set association between CMRs and IMRs. A resource set may be configured by the network device 110 for channel measurement and one or more resource sets may be configured for interference measurement. For purpose of discussion, the example shown in Fig. 4 is described with respect to CSI resources.
[0080]
As shown in Fig. 4, a CSI resource set 401 is configured for channel measurement, and CSI resource sets 402 and 403 are configured for interference measurement. The CSI resource set 401 comprises CSI resources 411 and 412. RX beams 421 (with an index of 1) and 422 (with an index of 2) associated with CSI resources 411 and 412 are configured by the network device 110.
[0081]
The CSI resource set 402 for IM comprises CSI resources 413 and 414. RX beams 423 (with an index of 1) and 424 (with an index of 2) associated with CSI resources 413 and 414 are also configured by the network device 110. The CSI resource set 403 for IM comprises CSI resources 415 and 416. RX beams 425 (with an index of 1) and 426 (with an index of 2) associated with CSI resources 415 and 416 are configured by the network device 110. In other words, CSI resources 423 and 425 are configured to be quasi co-located with CSI resource 421 with respect to ‘QCL-TypeD’ , and CSI resources 424 and 426 are configured to be quasi co-located with CSI resource 421 with respect to ‘QCL-TypeD’ .
[0082]
In this way, the resource set for CM is resource-wisely mapped to and resource-wisely quasi co-located with the resource set (s) for IM. In these embodiments, the correspondence relationship between the CMRs (CSI resources 411-412) and IMRs (CSI resources 413-416) is configured and predetermined by the network device 110. The CSI resources 411, 413 and 415 may all have a CRI of for example 1 and the CSI resources 412, 414 and 416 may all have a CRI of for example 2.
[0083]
The terminal device 120 may receive CSI-RSs in RX beams 421 and 422 and perform channel measurement accordingly. Based on the predetermined correspondence relationship, the CSI resources 413 and 415 are the IMRs corresponding to the CSI resource 411, and the CSI resources 414 and 416 are the IMRs corresponding to the CSI resource 412. Interference measurements may be performed with these CSI resources. The terminal device 120 may determine a SINR based on the channel and interference measurements and report information about the selected beam (s) (for example, CRI) and the respective SINR to the network device 110.
[0084]
In the example shown in Fig. 4, both the CMRs and IMRs are configured as CSI resources. In another example, a mixed configuration may be employed. For example, SSB resources may be configured by the network device 110 for channel measurement, and CSI resources, which are quasi co-located with SSB resources with respect to ‘QCL-TypeD’ , may be configured for interference measurement. It is to be understood that although two resource sets for interference measurement are shown in Fig. 4, it is only for illustration purpose without any limitation and more or less resource sets can be configured.
[0085]
In some embodiments, as mentioned above, the CMRs and IMRs may belong to a same resource set. Such embodiments are now described with reference to Fig. 5A and 5B. Fig. 5A shows a schematic diagram 500 illustrating resources configured for CM and IM according to some embodiments of the present disclosure. Fig. 5B shows a schematic diagram 550 illustrating a correspondence relationship between CMRs and IMRs according to these embodiments.
[0086]
Fig. 5A shows a NZP-CSI resource set 501, which comprises NZP-CSI resources 511-514. A first subset A of the NZP-CSI resources 511-514 is configured for channel measurement. For example, as shown in Fig. 5A, the NZP-CSI resources 511 (with a CRI of 1A, see Fig. 5B) and 513 (with a CRI of 2A, see Fig. 5B) are configured for channel measurement. A second subset B of the NZP-CSI resources 511-514 is configured for interference measurement. In the example shown in Fig. 5A, the NZP-CSI resources 512 (with a CRI of 1B, see Fig. 5B) and 514 (with a CRI of 2B, see Fig. 5B) are configured for interference measurement.
[0087]
In these embodiments, RX beams associated with the NZP-CSI resources 511-514 are configured by the network device. The resource for channel measurement and the corresponding resource (s) for interference measurement are associated with the same RX beam. As shown, RX beam 521 associated with the NZP-CSI resource 511 and RX beam 522 associated with the NZP-CSI resource 512 both have an index of 1. RX beam 523 associated with the NZP-CSI resource 513 and RX beam 524 associated with the NZP-CSI resource 514 both have an index of 2. In other words, the NZP-CSI resource 521 is configured to be quasi co-located with the NZP-CSI resource 522 with respect to ‘QCL-TypeD’ , and the NZP-CSI resource 523 is configured to be quasi co-located with the NZP-CSI resource 524 with respect to ‘QCL-TypeD’ .
[0088]
In this way, in the resource set 501, the resources for CM are resource-wisely mapped to and resource-wisely quasi co-located with the resources for IM. In these embodiments, the correspondence relationship between the CMRs (NZP-CSI resources 521 and 523) and IMRs (NZP-CSI resources 522 and 524) is configured and predetermined by the network device 110. As shown in Fig. 5B, the NZP-CSI resource 511 with a CRI of 1A is configured as the CMR 541 (CMR #1) and the NZP-CSI resource 512 with a CRI of 1B is configured as the IMR 542 (IMR #1) corresponding to CMR #1; the NZP-CSI resource 513 with a CRI of 2A is configured as the CMR 543 (CMR #2) and the NZP-CSI resource 514 with a CRI of 2B is configured as the IMR 544 (IMR #2) corresponding to CMR #2.
[0089]
Therefore, in this case, the CRI reported to the network device 110 may refer to a CSI resource pair/a subset in the CSI resource set. For the example shown in Fig. 5A, a reported CRI of 1 may refer to the NZP-CSI resources 511 and 512 and a reported CRI of 2 may refer to the NZP-CSI resources 513 and 514.
[0090]
It is to be understood that the number of CSI-resources for CM and the number of CSI-resources for IM are not limited to the case shown in Fig. 5A. The resource for CM may have more than one corresponding resource for IM. For example, in addition to the resource 512 for IM, the resource 511 for CM may have further corresponding resource for IM.
[0091]
In the embodiments described above, the channel and interference measurements are performed with different resources. In this way, the SINR based beam reporting is enabled.
[0092]
In NR, a resource may be associated with a plurality of antenna ports, which is also referred to as ports herein. Therefore, different ports associated with a resource may be used to perform channel and interference measurement, respectively. Such embodiments are now described with reference to Figs. 6, 7A and 7B. Fig. 6 shows a flowchart of an example method 600 in accordance with some embodiments of the present disclosure. The method 600 can be implemented at the terminal device 120 shown in Fig. 1A. It is to be understood that the method 600 may include additional blocks not shown and/or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard. For the purpose of discussion, the method 600 will be described with reference to Fig. 1A.
[0093]
At block 610, the terminal device 120 determines first and second ports associated with a resource configured by the network device 110. The first port is configured for channel measurement and the second port is configured for interference measurement.
[0094]
Reference is now made to Fig. 7A, which shows a schematic diagram 700 illustrating ports allocated for CM and IM according to some embodiments of the present disclosure. In the example shown in Fig. 7A, CSI resources 711 and 712 are configured for channel and interference measurements. The CSI resource 711 has 5 ports associated therewith, which are the ports 721-725, and the CSI resource 712 has 5 ports associated therewith, which are the ports 731-735.
[0095]
A subset of the ports may be configured for channel measurement. For example, the port 722 associated with the CSI resource 711 and the port 732 associated with the CSI resource 712 are configured for channel measurement. Another subset of the ports may be configured for interference measurement. For example, the port 723 associated with the CSI resource 711 and the port 733 associated with the CSI resource 712 are configured for interference measurement. As shown in Fig. 7A, the CSI resource 711 is configured to be associated with a RX beam 726 with an index of 1, and the CSI resource 712 is configured to be associated with a RX beam 736 with an index of 2.
[0096]
Fig. 7B shows a schematic diagram 750 illustrating a correspondence relationship between CMR and IMR according to these embodiments. The correspondence in Fig. 7B is shown with respect to the CSI resource 711, of which the CRI is 1. As shown, in this case, both the CMR 741 (CMR #1) and the IMR 742 (IMR #1) correspond to the CSI resource 711.
[0097]
Still refer to Fig. 6. For the CSI resource 711 shown in Fig. 7A, the terminal device 120 at block 610 may determine that the port 722 is configured for CM and the port 723 is configured for IM.
[0098]
At block 620, the terminal device 120 performs the channel measurement on a first stream of a signal received from a network device 110 via the first port and performs interference measurement on a second stream of the signal received from the network device 110 via the second port. For example, when receiving CSI-RS with the CSI resource 711, the terminal device 120 may perform the channel measurement via the port 722 and the interference measurement via the port 723.
[0099]
In some embodiments, the terminal device 120 may determine a channel quality based on the channel and interference measurements, and transmit at least the channel quality to the network device. For example, the terminal device 120 may determine the SINR based on the CM via the port 722 and the IM via the port 723. The terminal device 120 may then transmit the determined SINR along with an indication of the CSI resource 711 (e.g. CRI) to the network device 110.
[0100]
In this case, the CRI reported to the network device 110 may refer to a CSI resource in a CSI resource set. It is to be understood that the number of ports shown in Fig. 7A is only for illustration without any limitation. The resource configured by the network device 110 may be associated with more or less ports.
[0101]
In such embodiments, the number of resources for SINR measurement is not increased. Instead, the number of ports needs to be increased. In this way, SINR measurement can be achieved in a time saving and resource saving manner.
[0102]
In the embodiments described above, channel measurement and interference measurement are performed either with different resources or via difference ports. In some embodiments, both the channel and interference measurements may be performed on the same resource. Such embodiments are now described with reference to Figs. 8, 9A, 9B and 10.
[0103]
Fig. 8 shows a flowchart of an example method 800 in accordance with some embodiments of the present disclosure. The method 800 can be implemented at the terminal device 120 shown in Fig. 1A. It is to be understood that the method 800 may include additional blocks not shown and/or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard. For the purpose of discussion, the method 800 will be described with reference to Fig. 1A.
[0104]
At block 810, the terminal device 120 performs channel and interference measurements on signals received from a network device 110 with a group of resources. The signals may be transmitted by the network device 110 in a plurality of TX beams, i.e. a beam for each resource of the group of resources. The signals may be received by the terminal device 120 with the group of resources in a same RX beam. In other words, for the receiving of the reference signals, the resources of the group of resources are quasi co-located with each other with respect to ‘QCL-TypeD’ .
[0105]
At block 810, the terminal device 120 selects, based on the channel and interference measurements, a first resource and a second resource from the plurality of resources. The first resource is associated with the channel measurement and the second resource is associated with the interference measurement.
[0106]
At block 810, the terminal device 120 transmits, to the network device 110, indications of the first and second resources, for example, the CRIs of CSI resources. In some embodiments, the terminal device 120 may further determine a channel quality (e.g. SINR) based on the channel measurement with the first resource and the interference measurement with the second resource; and transmit the channel quality for example the SINR to the network device 110.
[0107]
These embodiments are further described in detail with respect to the examples shown in Figs. 9A and 9B. Fig. 9A shows a schematic diagram 900 illustrating a group 901 of resources configured for SINR measurement according to some embodiments of the present disclosure. Fig. 9B shows a schematic diagram 950 illustrating a group 902 of resources configured for SINR measurement according to some embodiments of the present disclosure.
[0108]
The group 901 may has a QCL group-based RS configuration, which means that resources 911-914 are quasi co-located with each other with respect to ‘QCL-TypeD’ . The terminal device 120 may perform both CM and IM on RS received with each of the resources 911-914. The RSs on different resources 911-914 are transmitted by the network device 110 in different beams. That is, the resources 911-914 correspond to different TX beams at the network device 110.
[0109]
The terminal device 120 may then select at least two resources from the group 901. For the example shown in Fig. 9A, the resource 912 is determined to be associated with CM and the resource 913 is determined to be associated with IM. This means that the signal received with the resource 912 may have a relatively better quality (e.g., the best quality among the resources 911-914) , and that the interference or noise on the resource 913 is relatively low (e.g., the least interference among the resources 911-914) . In this way, the inter-TX-beam interference, e.g., the interference when receiving the resource 913 transmitted on a beam caused by another transmission beam of the resource 913 is measured.
[0110]
For the example shown in Fig. 9B, the resource 922 is determined to be associated with CM, and the resources 921 and 923 are determined to be associated with IM. The number of resources selected by the terminal device 120 may be configured by the network device 110 in advance. Different from the embodiments above, in these embodiments, the indications or indices for signal (CM) and for interference/noise (IM) may be reported independently. Table 1 shows an example SINR-reporting format.
[0111]
Table 1 an example SINR-reporting format
[0112]
[0113]
In Table 1, each column corresponds to different number of beams to be reported and each row corresponds to different beam pair to be reported. The example shown in Fig. 9A corresponds to the format at the cross element of the column ‘1 st beam pair’ and the row ‘Best 1’ , while the example shown in Fig. 9B corresponds to the format at the cross element of the column ‘1 st beam pair’ and the row ‘Best 2’ .
[0114]
For the example shown in Fig. 9A, the CRI of the resource 912 and the CRI of the resource 913 are included in the field ‘index’ with the CRI of the resource 912 preceding the CRI of the resource 913. The SINR determined based on the CM and IM on these two resources may be included in the field ‘value’ . Differential SINR value can be reported. When information related to another beam pair is required to be reported, the field ‘value’ may be populated by the difference between the SINRs determined based on the two beam pairs. For example, ‘ (d) SNIR’ as shown in Table 1 can be the differential value of SNIRs between the 1 st beam pair and 2 nd beam pair.
[0115]
After receiving the report regarding the SINR measurement, the network device 110 may determine a beam corresponding to the resource 912. For purpose of discussion, this beam is also referred to as a first beam. The network device 110 may further determine a beam corresponding to the resource 913. For purpose of discussion, this beam is also referred to as a second beam. The network device 110 may receive from another terminal device which determines the resource 912 as the second beam (associated with IM) and the resource 913 as the first beam (associated with CM) . Then, the network device 110 may utilize the first beam for further communication with the terminal device 120 and utilize the second beam for communication with the other terminal device served by the network device 110.
[0116]
Fig. 10 shows a flowchart of an example method 1000 in accordance with some embodiments of the present disclosure. The method 1000 can be implemented at the network device 110 shown in Fig. 1A. It is to be understood that the method 1000 may include additional blocks not shown and/or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard. For the purpose of discussion, the method 1000 will be described with reference to Fig. 1A.
[0117]
At block 1010, the network device 110 transmits, to the terminal device 120, signals in a plurality of beams with a group of resources, for example, group 901. Each of the plurality of beams corresponds to one resource in the group of resources.
[0118]
At block 1020, the network device 110 receives, from the terminal device 120, indications of first and second resources of the group of resources, the first resource being associated with a channel measurement performed by the terminal device 120 and the second resource being associated with an interference measurement performed by the terminal device 120. For example, the network device 110 may receive the CRIs of the resources 912 and 913.
[0119]
At block 1010, the network device 110 determines first and second beams of the plurality of beams to enable communication between the network device 120 and the terminal device via the first beam and communication between the network device and a further terminal device via the second beam, the first beam corresponding to the first resource and the second beam corresponding to the second resource.
[0120]
In such embodiments, the CMRs and IMRs are not explicitly configured, and CM and IM are instead performed on each of the configured resources.
[0121]
It is to be understood that the resources shown in Figs. 3-5, 7 and 9 are only for purpose of illustration and any suitable number of resources may be configured for channel and interference measurement. Although CSI resource and SSB resource are mentioned, other types of resources suitable for channel and interference measurements may be envisaged by a person skilled in the art. Moreover, aspects descried above with respect to different embodiments may be combined.
[0122]
Fig. 11 is a simplified block diagram of a device 1100 that is suitable for implementing embodiments of the present disclosure. The device 1100 can be considered as a further example implementation of the network device 110 or the terminal device 120 as shown in Fig. 1A. Accordingly, the device 1100 can be implemented at or as at least a part of the network device 110 or the terminal device 120.
[0123]
As shown, the device 1100 includes a processor 1110, a memory 1120 coupled to the processor 1110, a suitable transmitter (TX) and receiver (RX) 1140 coupled to the processor 1110, and a communication interface coupled to the TX/RX 1140. The memory 1110 stores at least a part of a program 1130. The TX/RX 1140 is for bidirectional communications. The TX/RX 1140 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones. The communication interface may represent any interface that is necessary for communication with other network elements, such as X2 interface for bidirectional communications between eNBs, S1 interface for communication between a Mobility Management Entity (MME) /Serving Gateway (S-GW) and the eNB, Un interface for communication between the eNB and a relay node (RN) , or Uu interface for communication between the eNB and a terminal device.
[0124]
The program 1130 is assumed to include program instructions that, when executed by the associated processor 1110, enable the device 1100 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to Figs. 2, 6, 8 and 10. The embodiments herein may be implemented by computer software executable by the processor 1110 of the device 1100, or by hardware, or by a combination of software and hardware. The processor 1110 may be configured to implement various embodiments of the present disclosure. Furthermore, a combination of the processor 1110 and memory 1110 may form processing means 1150 adapted to implement various embodiments of the present disclosure.
[0125]
The memory 1110 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 1110 is shown in the device 1100, there may be several physically distinct memory modules in the device 1100. The processor 1110 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples. The device 1100 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
[0126]
Generally, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
[0127]
The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium. The computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to any of Figs. 2, 6, 8 and 10. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split between program modules as desired in various embodiments. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
[0128]
Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented. The program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
[0129]
The above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine readable medium may be a machine readable signal medium or a machine readable storage medium. A machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
[0130]
Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable sub-combination.
[0131]
Although the present disclosure has been described in language specific to structural features and/or methodological acts, it is to be understood that the present disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

[Claim 1]
A method implemented at a terminal device, comprising: performing channel measurement on a first signal, the first signal being received from a network device in a beam with a first resource of a first group of resources; determining, based on the first resource, a second resource from a second group of resources configured for interference measurement, the second group of resources being different from the first group of resources; and performing the interference measurement on a second signal, the second signal being received from the network device in the beam with the second resource.
[Claim 2]
The method of claim 1, wherein determining the second resource comprises: determining a first indication of the first resource; and selecting, based on a resource correspondence relationship configured by the network device, the second resource from the second group of resources, a second indication of the second resource matching the first indication of the first resource, the resource correspondence relationship indicating a correspondence between indications of resources in the first group and indications of resources in the second group.
[Claim 3]
The method of claim 1, wherein the first group of resources and the second group of resources belong to a same resource set.
[Claim 4]
The method of claim 3, wherein the first resource is a Channel State Information (CSI) resource and the second resource is a further CSI resource, the CSI resources being configured to determine a CSI reference signal.
[Claim 5]
The method of claim 1, wherein the first group of resources is a first resource set and the second group of resources is a second resource set.
[Claim 6]
The method of claim 5, wherein the number of resources in the first resource set is equal to the number of resources in the second resource set.
[Claim 7]
The method of claim 5, wherein the number of resources in the first resource set is larger than the number of resources in the second resource set.
[Claim 8]
The method of claim 5, wherein the first resource comprises at least one of a Channel State Information (CSI) resource and a Synchronization Signal/Physical Broadcast Channel block (SSB) resource, and the second resource is a further CSI resource.
[Claim 9]
The method of claim 1, further comprising: determining a channel quality based on the channel and interference measurements; and transmitting at least the channel quality to the network device.
[Claim 10]
A method implemented at a terminal device, comprising: determining first and second ports associated with a resource configured by the network device, the first port being configured for channel measurement and the second port being configured for interference measurement; and performing the channel measurement on a first stream of a signal received from a network device via the first port and interference measurement on a second stream of the signal received from the network device via the second port.
[Claim 11]
The method of claim 10, further comprising: determining a channel quality based on the channel and interference measurements; and transmitting at least the channel quality to the network device.
[Claim 12]
A method implemented at a terminal device, comprising: performing channel and interference measurements on signals received from a network device with a group of resources; selecting, based on the channel and interference measurements, a first resource and a second resource from the plurality of resources, the first resource being associated with the channel measurement and the second resource being associated with the interference measurement; and transmitting, to a network device, indications of the first and second resources.
[Claim 13]
The method of claim 12, further comprising: determining a channel quality based on the channel measurement with the first resource and the interference measurement with the second resource; and transmitting the channel quality to the network device.
[Claim 14]
A method implemented at a network device, comprising: transmitting, to a terminal device, signals in a plurality of beams with a group of resources, each of the plurality of beams corresponding to one resource in the group of resources; receiving, from the terminal device, indications of first and second resources of the group of resources, the first resource being associated with a channel measurement performed by the terminal device and the second resource being associated with an interference measurement performed by the terminal device; and determining first and second beams of the plurality of beams to enable communication between the network device and the terminal device via the first beam and communication between the network device and a further terminal device via the second beam, the first beam corresponding to the first resource and the second beam corresponding to the second resource.
[Claim 15]
The method of claim 14, further comprising: receiving a channel quality from the terminal device, the channel quality being determined based on the channel measurement with the first resource and the interference measurement with the second resource.
[Claim 16]
A terminal device, comprising: a processor; and a memory coupled to the processing unit and storing instructions thereon, the instructions, when executed by the processing unit, causing the apparatus to perform the method according to any of claims 1-9.
[Claim 17]
A terminal device, comprising: a processor; and a memory coupled to the processing unit and storing instructions thereon, the instructions, when executed by the processing unit, causing the apparatus to perform the method according to any of claims 10-11.
[Claim 18]
A terminal device, comprising: a processor; and a memory coupled to the processing unit and storing instructions thereon, the instructions, when executed by the processing unit, causing the apparatus to perform the method according to any of claims 12-13.
[Claim 19]
A network device, comprising: a processor; and a memory coupled to the processing unit and storing instructions thereon, the instructions, when executed by the processing unit, causing the apparatus to perform the method according to any of claims 14-15.
[Claim 20]
A computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to any of claims 1-9.
[Claim 21]
A computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to any of claims 10-11.
[Claim 22]
A computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to any of claims 12-13.
[Claim 23]
A computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to any of claims 14-15.

Drawings

[ Fig. 1A]  
[ Fig. 1B]  
[ Fig. 2]  
[ Fig. 3A]  
[ Fig. 3B]  
[ Fig. 4]  
[ Fig. 5A]  
[ Fig. 5B]  
[ Fig. 6]  
[ Fig. 7A]  
[ Fig. 7B]  
[ Fig. 8]  
[ Fig. 9A]  
[ Fig. 9B]  
[ Fig. 10]  
[ Fig. 11]