[특허]Method for scheduling transmission of MBMS data in UMTS

LG Electronics Inc.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Method for scheduling transmission of MBMS data in UMTS

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-003/26
미국특허분류(USC)	370/432; 370/437
출원번호	UP-0639756 (2003-08-13)
등록번호	US-7620061 (2009-11-27)
우선권정보	KR-10-2002-0048263(2002-08-14)
발명자 / 주소	Yi, Seung June Lee, Young Dae Lee, So Young
출원인 / 주소	LG Electronics Inc.
대리인 / 주소	McKenna Long & Aldridge LLP
인용정보	피인용 횟수 : 13 인용 특허 : 1

초록

A multimedia service of a UMTS (Universal Mobile Telecommunications System) is disclosed. When UTRAN provides an MBMS service, it designates time at which each data for MBMS service is transmitted and transmits the corresponding time information to a terminal group which desires to receive a specific MBMS service. Accordingly, a terminal of the terminal group receives the MBMS service data during a section of the corresponding time information and also receives a control signal or other service than the MBMS service at other time.

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What is claimed is: 1. A method of transmitting point-to-multipoint service multimedia data in a wireless communications system, the method comprising: determining scheduling information for each of a plurality of point-to-multipoint multimedia services, wherein the scheduling information for each point-to-multipoint multimedia service designates transmission start information and transmission duration information that indicates the number of consecutively transmitted frames which contain the multimedia data of the corresponding point-to-multipoint multimedia service; transmitting the scheduling information for each of the plurality of point-to-multipoint multimedia services to a corresponding group of mobile terminals, respectively, wherein the scheduling information associated with each point-to-multipoint multimedia service is independent of the scheduling information associated with each of the other point-to-multipoint multimedia services; and transmitting the multimedia data for each of the plurality of point-to-multipoint multimedia services in accordance with the independent, corresponding scheduling information such that a mobile terminal associated with the plurality of point-to-multipoint multimedia services is capable of using the scheduling information to determine a time interval between receiving multimedia data associated with one of the point-to-multipoint services and a next one of the point-to-multipoint services in order to operating in Discontinuous Receive Mode. 2. The method as claimed in claim 1, wherein the transmission start information includes a time section and the transmission duration information includes a time interval. 3. The method as claimed in claim 1, wherein the scheduling information associated with a given one of the point-to-multipoint multimedia services further designates information of a next scheduling period, the information of the next scheduling period including an interval between the start of the present point-to-multipoint multimedia transmission and the start of the next point-to-multipoint multimedia transmission. 4. The method as claimed in claim 1, wherein the scheduling information associated with a given one of the point-to-multipoint multimedia services further designates information of a next scheduling period, the information of the next scheduling period including a time interval repetition period. 5. The method as claimed in claim 1, wherein each of the point-to-multipoint multimedia services includes multimedia broadcast and multicast service. 6. The method as claimed in claim 1, wherein the scheduling information for each of the plurality of point-to-multipoint multimedia services is transmitted periodically by the network, separate and independent of the other point-to-multipoint multimedia services, to inform a mobile terminal when each corresponding point-to-multipoint multimedia service is scheduled to be transmitted. 7. A method of discontinuously receiving from a network, multimedia data associated with a point-to-multipoint service in a wireless communications system, the method comprising: receiving scheduling information for each of a plurality of point-to-multipoint services, wherein the scheduling information for each point-to-multipoint service designates start information and duration information that indicates a number of consecutively transmitted frames which convey the multimedia data of the corresponding point-to-multipoint service, wherein the scheduling information associated with each point-to-multipoint service is independent of the scheduling information associated with each of the other point-to-multipoint services; and receiving the multimedia data associated with each of the plurality of point-to-multipoint services in accordance with the received scheduling information for each point-to-multipoint service, wherein a mobile terminal associated with each of the plurality of point-to-multipoint services is capable of using the received scheduling information to determine a time interval between receiving multimedia data associated with one of the point-to-multipoint services and a next one of the point-to-multipoint services in order to operate in Discontinuous Receiving mode. 8. The method as claimed in claim 7, wherein the start information includes a time section and the duration information includes a time interval. 9. The method as claimed in claim 7, wherein the scheduling information associated with one or more of the plurality of point-to-multipoint services includes next scheduling period information that indicates an interval between the start associate with receiving the present point-to-multipoint multimedia data and the start associated with receiving the next point-to-multipoint multimedia data. 10. The method as claimed in claim 9, wherein the interval associated with the next scheduling period is a time interval repetition period. 11. The method as claimed in claim 7, wherein each of the point-to-multipoint services includes multimedia broadcast and multicast service. 12. The method as claimed in claim 7, wherein the scheduling information for each of the plurality of point-to-multipoint services is received periodically. 13. The method as claimed in claim 7, wherein the received multimedia data includes at least one of audio data, video data and image data. 14. In a wireless communication system, a method for scheduling a plurality of point-to-multipoint services for at least one user terminal associated with each of the plurality of point-to-multipoint services, the method comprising: periodically receiving one or more point-to-multipoint scheduling information messages for each of the plurality of point-to-multipoint services via a common logical channel, wherein the logical channel is commonly used for receiving the one or more scheduling information messages for each of the plurality of point-to-multipoint services, thereby informing the at least one user terminal when corresponding point-to-multipoint data associated with each service is scheduled to be transmitted via respective logical channels, wherein the corresponding point-to-multipoint data is transmitted in a common physical channel, and wherein the scheduling information associated with each of the plurality of point-to-multipoint services is independent with respect to the scheduling information associated with each of the other point-to-multipoint services; and the at least one user terminal capable of using the scheduling information associated with each of the plurality of point-to-multipoint services to determine a time interval between receiving multimedia data associated with one of the point-to-multipoint services and a next one of the point-to-multipoint services in order to discontinue receiving over the physical channel. 15. The method as claimed in claim 14, wherein the one or more point-to-multipoint scheduling information messages for each of the plurality of point-to-multipoint services comprises a start parameter, expressed in terms of a number of radio frames, indicating a start of the transmission relative to a transmission time interval in which the corresponding point-to-multipoint scheduling information message was received. 16. The method as claimed in claim 14, wherein the one or more point-to-multipoint scheduling information messages for each of the plurality of point-to-multipoint services comprises a duration parameter, expressed in terms of a number of radio frames, indicating a duration of the transmission relative to a transmission time intend in which the one or more sets of corresponding point-to-multipoint scheduling information message was received. 17. The method as claimed in claim 14, wherein the one or more sets of point-to-multipoint scheduling information messages for each of the plurality of point-to-multipoint services comprises a next scheduling period indicating a number of scheduling periods after a current scheduling period in which no data will be transmitted for the corresponding point-to-multipoint service. 18. An apparatus for transmitting point-to-multipoint service data from each of a plurality of point-to-multipoint services, over a wireless network, to at least one mobile terminal associated with each of the plurality of point-to-multipoint services, the apparatus comprising: a protocol entity adapted to designate a transmission interval at a control plane by: determining scheduling information for each of the plurality of point-to-multipoint services, wherein the scheduling information for each point-to-multipoint service designates start information and duration information that indicates a number of consecutive frames which contain the multimedia data associated with the corresponding point-to-multipoint service, and wherein the scheduling information associated with each of the plurality of point-to-multipoint services is independent of the scheduling information associated with each of the other point-to-multipoint services; and transmitting the multimedia data associated with each of the plurality of point-to-multipoint services in accordance with the scheduling information such that the at least one mobile terminal is capable of receiving and then using the scheduling information to determine a time interval between the transmission interval associated with one of the point-to-multipoint services and a transmission interval associated with a next one of the point-to-multipoint services in order to operate in Discontinuous Receiving mode. 19. The apparatus as claimed in claim 18, wherein the start information includes a time section and the duration information includes a time interval. 20. The apparatus as claimed in claim 18, wherein the scheduling information further designates information of a next scheduling period, the next scheduling period information including an interval between the start associated with the present point-to-multipoint data transmission and the start associated with the next point-to-multipoint data transmission. 21. The apparatus as claimed in claim 18, wherein the scheduling information further designates information of a next scheduling period, the information of the next scheduling period including a time interval repetition period. 22. The apparatus as claimed in claim 18, wherein each of the point-to-multipoint services includes multimedia broadcast and multicast service. 23. The apparatus as claimed in claim 18, wherein the scheduling information for each of the plurality of point-to-multipoint services is transmitted periodically by the network to inform the at least one mobile terminal when each corresponding point-to-multipoint service is scheduled to be transmitted. 24. An apparatus for receiving, over a wireless network, multimedia data from each of a plurality of point-to-multipoint services, the apparatus comprising: a protocol entity adapted to designate a transmission interval at a control plane by: receiving scheduling information for each of the plurality of point-to-multipoint services, wherein the scheduling information for each point-to-multipoint service designates start information and duration information that indicates a number of consecutive frames which contain the multimedia data associated with the corresponding point-to-multipoint service, wherein the scheduling information, including the start information and the duration information, associated with each of the point-to-multipoint services is independent of the scheduling information, including the start information and the duration information, associated with each of the other point-to-multipoint services; and receiving the multimedia data associated with each of the plurality of point-to-multipoint services in accordance with the received scheduling information for each point-to-multipoint service, wherein a mobile terminal associated with each of the plurality of point-to-multipoint services receiving the scheduling information corresponding to each of the plurality of point-to-multipoint services is capable of using the received scheduling information, including the start information and duration information, to determine a time interval between receiving multimedia data associated with one of the point-to-multipoint services and a next one of the point-to-multipoint services in order to operate in Discontinuous Receiving mode. 25. The apparatus as claimed in claim 24 wherein the start information includes a time section and the duration information includes a time interval. 26. The apparatus as claimed in claim 24, wherein the scheduling information associated with each of the plurality of point-to-multipoint services includes next scheduling period information, and wherein the next scheduling information indicates an interval between the start associated with the present point-to-multipoint data being received and the start associated with the next point-to-multipoint data to be received. 27. The apparatus as claimed in claim 26, wherein the next scheduling period is a time interval repetition period. 28. The apparatus as claimed in claim 24, wherein each of the plurality of point-to-multipoint services includes multimedia broadcast and multicast service. 29. The apparatus as claimed in claim 24, wherein the scheduling information for each of the plurality of point-to-multipoint services is received periodically. 30. The apparatus as claimed in claim 24, wherein the received multimedia data includes at least one of audio data, video data and image data.

이 특허에 인용된 특허 (1)

Parantainen, Janne J; Jokinen, Harri; Leppisaari, Arto, Wireless telecommunications system using multislot channel allocation for multimedia broadcast/multicast service.

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Method for scheduling transmission of MBMS data in UMTS

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Method for scheduling transmission of MBMS data in UMTS

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