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1. WO2022025327 - STORAGE METHOD AND DEVICE THAT CONSIDER FREQUENCY OF RETRANSMISSION IN CACHING SYSTEM HAVING LIMITED CACHE MEMORY

Publication Number WO/2022/025327
Publication Date 03.02.2022
International Application No. PCT/KR2020/010129
International Filing Date 31.07.2020
IPC
H04N 21/433 2011.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
40Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB ; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronizing decoder's clock; Client middleware
433Content storage operation, e.g. storage operation in response to a pause request or caching operations
H04N 21/231 2011.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
231Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers or prioritizing data for deletion
G06F 12/0802 2016.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
12Accessing, addressing or allocating within memory systems or architectures
02Addressing or allocation; Relocation
08in hierarchically structured memory systems, e.g. virtual memory systems
0802Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
H04W 28/14 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
02Traffic management, e.g. flow control or congestion control
10Flow control
14using intermediate storage
H04W 28/04 2009.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
28Network traffic or resource management
02Traffic management, e.g. flow control or congestion control
04Error control
CPC
G06F 12/0802
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
12Accessing, addressing or allocating within memory systems or architectures
02Addressing or allocation; Relocation
08in hierarchically structured memory systems, e.g. virtual memory systems
0802Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
G06F 2212/455
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
2212Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
45Caching of specific data in cache memory
455Image or video data
H04N 21/231
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
231Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
H04N 21/23106
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
231Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
23106involving caching operations
H04N 21/433
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
433Content storage operation, e.g. storage operation in response to a pause request, caching operations
H04N 21/4331
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
433Content storage operation, e.g. storage operation in response to a pause request, caching operations
4331Caching operations, e.g. of an advertisement for later insertion during playback
Applicants
  • 한국과학기술원 KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY [KR]/[KR]
Inventors
  • 강준혁 KANG, Joon Hyuk
  • 하석종 HA, Suk Jong
  • 나진엽 NA, Jin Yeop
Agents
  • 특허법인 무한 MUHANN PATENT & LAW FIRM
Priority Data
10-2020-009530930.07.2020KR
Publication Language Korean (ko)
Filing Language Korean (KO)
Designated States
Title
(EN) STORAGE METHOD AND DEVICE THAT CONSIDER FREQUENCY OF RETRANSMISSION IN CACHING SYSTEM HAVING LIMITED CACHE MEMORY
(FR) PROCÉDÉ ET DISPOSITIF DE STOCKAGE QUI PRENNENT EN COMPTE LA FRÉQUENCE DE RETRANSMISSION DANS UN SYSTÈME DE MISE EN CACHE AYANT UNE MÉMOIRE CACHE LIMITÉE
(KO) 제한된 캐시 메모리를 가진 캐싱 시스템에서 재전송 횟수를 고려한 저장 방법 및 장치
Abstract
(EN) The present invention relates to a cache memory management method of a wireless communication system, and a storage method and device that consider the frequency of retransmission in a caching system having a limited cache memory are disclosed. One embodiment relates to a cache memory management method of a wireless communication system, the method comprising the steps of: calculating, in consideration of the frequency of retransmission requests, request probability per unit size of a corresponding file in correspondence to each of the plurality of files corresponding to the combinations of a plurality of contents and a plurality of image qualities; and storing, within the capacity of a cache memory, at least some of the plurality of files in order from the highest per-unit-size request probability.
(FR) La présente invention divulgue un procédé de gestion de mémoire cache d'un système de communication sans fil, ainsi qu'un procédé et un dispositif de stockage qui prennent en compte la fréquence de retransmission dans un système de mise en cache ayant une mémoire cache limitée. Un mode de réalisation concerne un procédé de gestion de mémoire cache d'un système de communication sans fil, le procédé consistant à : calculer, compte tenu de la fréquence des demandes de retransmission, une probabilité de demande par unité de taille d'un fichier correspondant en correspondance avec chaque fichier de la pluralité de fichiers correspondant aux combinaisons d'une pluralité de contenus et d'une pluralité de qualités d'image ; et stocker, dans la capacité d'une mémoire cache, au moins certains de la pluralité de fichiers dans l'ordre à partir de la probabilité de demande par unité de taille la plus élevée.
(KO) 무선 통신 시스템의 캐시 메모리 관리 방법에 관한 것으로, 제한된 캐시 메모리를 가진 캐싱 시스템에서 재전송 횟수를 고려한 저장 방법 및 장치가 개시된다. 일실시예는 무선 통신 시스템의 캐시 메모리 관리 방법에 있어서, 복수의 컨텐츠들과 복수의 화질들의 조합들에 대응하는 복수의 파일들 각각에 대응하여, 재전송 요청 횟수를 고려하여 해당하는 파일에 대한 단위 크기당 요청 확률을 계산하는 단계 및 캐시 메모리의 용량 이내에서, 복수의 파일들 중 적어도 일부를 단위 크기당 요청 확률이 큰 순서로 저장하는 단계를 포함한다.
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