IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0856139
(2007-09-17)
|
등록번호 |
US-8139526
(2012-03-20)
|
우선권정보 |
GB-0620370.7 (2006-10-13) |
발명자
/ 주소 |
- Zhou, Yuefeng
- Vadgama, Sunil Keshavji
- Hart, Michael John Beems
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
5 |
초록
▼
A wireless communication method in a wireless communication system is provided. In the wireless communication system, subscriber stations are each operable to communicate with a base station and the base station is capable of performing simultaneous communications with a number of subscriber station
A wireless communication method in a wireless communication system is provided. In the wireless communication system, subscriber stations are each operable to communicate with a base station and the base station is capable of performing simultaneous communications with a number of subscriber stations by allocating an available capacity among the subscriber stations. The subscriber stations are required to issue capacity requests in order to obtain and/or maintain a connection with the base station, and communications between the subscriber stations and the base station are performed partly or wholly through at least one relay station. The provided wireless communication method includes, in the relay station, detecting capacity requests issued from a plurality of the subscriber stations, using the detected requests to form at least one combined capacity request, and transmitting the combined capacity request to the base station. Furthermore, the method includes, in the base station, responding to the combined capacity request by reserving capacity for said plurality of subscriber stations. In addition, the method includes, in the relay station or in the base station, allocating the reserved capacity among the plurality of subscriber stations.
대표청구항
▼
1. A wireless communication method in which subscriber stations are each operable for communication with a base station, the base station being capable of performing simultaneous communications with a number of subscriber stations by allocating an available bandwidth among the subscriber stations, t
1. A wireless communication method in which subscriber stations are each operable for communication with a base station, the base station being capable of performing simultaneous communications with a number of subscriber stations by allocating an available bandwidth among the subscriber stations, the subscriber stations being required to issue bandwidth requests in order to obtain and/or maintain a connection with the base station, and communications between the subscriber stations and the base station being performed partly or wholly through at least one relay station, the method comprising: in the relay station, detecting bandwidth requests issued from a plurality of the subscriber stations, using the detected requests to form at least one combined bandwidth request, and transmitting the combined bandwidth request to the base station;in the base station, responding to the combined bandwidth request by reserving bandwidth for said plurality of subscriber stations; andin the relay station or in the base station, allocating the reserved bandwidth among the plurality of subscriber stations;wherein each connection between a subscriber station and the base station has a connection identifier, the bandwidth request from the subscriber stations including connection identifiers, and the relay station transmitting said combined bandwidth request with a single existing connection identifier which is associated with all connection identifiers used by the subscriber stations connected to the relay station without information identifying each of the subscriber stations. 2. The method according to claim 1, wherein each subscriber station issues a bandwidth request as part of a network entry procedure to obtain a connection with the base station. 3. The method according to claim 2, wherein the bandwidth request is a request for an aggregate amount of bandwidth. 4. The method according to claim 1, wherein at least some subscriber stations issue a bandwidth request during communication with the base station to maintain or change an existing connection with the base station. 5. The method according to claim 4, wherein the bandwidth request is a request for an incremental amount of bandwidth. 6. The method according to claim 1, wherein the bandwidth request is an initial bandwidth request in the form of a CDMA ranging code. 7. The method according to claim 6, wherein the relay station transmits the combined bandwidth request in the form of a CDMA code. 8. The method according to claim 1, wherein the bandwidth request is a further bandwidth request in the form of a stand alone media access control header. 9. The method according to claim 1, wherein the relay station transmits the combined bandwidth request in the form of a stand alone media access control header. 10. The method according to claim 1, wherein communication is performed through exchange of packets and the relay station transmits the combined bandwidth request in a medium access control layer header of such a packet. 11. The method according to claim 1, wherein the combined bandwidth request includes details of individual bandwidth requests detected in said detecting step. 12. The method according to claim 11, wherein each connection between a subscriber stations and the base station has a connection ID, and said details include connection IDs corresponding to the detected bandwidth requests. 13. The method according to claim 1, wherein the combined bandwidth request aggregates the amounts of bandwidth contained in the detected bandwidth requests without including details of the individual bandwidth requests. 14. The method according to claim 1 wherein the relay station classifies the detected bandwidth requests into urgent and non-urgent requests. 15. The method according to claim 14 wherein separate combined bandwidth requests are formed using the urgent and the non-urgent requests respectively. 16. The method according to claim 15 wherein said step of transmitting the combined bandwidth request includes immediately transmitting a combined bandwidth request formed using urgent requests, whilst delaying transmission of a combined bandwidth request formed using non-urgent requests. 17. The method according to claim 16 wherein the relay station waits for a predetermined time period to elapse before transmitting the combined bandwidth request formed from non-urgent requests. 18. The method according to claim 1, wherein each connection between a subscriber station and the base station is assigned one of a plurality of levels of quality-of-service (QoS), and wherein the relay station classifies the detected bandwidth requests based on the QoS. 19. The method according to claim 18, wherein each connection between a subscriber station and the base station has a connection ID with which QoS information is associated, the relay station obtaining the QoS based on the connection ID. 20. The method according to claim 1, wherein the system comprises at least one further relay station in communication with said relay station, the further relay station performing the same steps as said relay station in relation to further subscriber stations with said relay station acting as its base station, said relay station detecting a bandwidth request from said further relay station and using that bandwidth request in forming said combined bandwidth request. 21. The method according to claim 1, wherein one or more of the subscriber stations are mobile stations. 22. A wireless communication system in which subscriber stations are each operable for communication with a base station, the base station being capable of performing simultaneous communications with a number of subscriber stations by allocating an available bandwidth among the subscriber stations, the subscriber stations being required to issue bandwidth requests in order to obtain and/or maintain a connection with the base station, and communications between the subscriber stations and the base station being performed partly or wholly through at least one relay station, wherein: the relay station is arranged to detect bandwidth requests issued from a plurality of the subscriber stations, to use the detected requests to form at least one combined bandwidth request, and transmit the combined bandwidth request to the base station;the base station is responsive to the combined bandwidth request to reserve bandwidth for said plurality of subscriber stations; andthe relay station or the base station is arranged to allocate the reserved bandwidth among the plurality of subscriber stations;wherein each connection between a subscriber station and the base station has a connection identifier, the bandwidth request from the subscriber stations including connection identifiers, and the relay station is arranged to transmit said combined bandwidth request with a single existing connection identifier which is associated with all connection identifiers used by the subscriber stations connected to the relay station without information identifying each of the subscriber stations. 23. A relay station for use in a wireless communication system in which subscriber stations are each operable for communication with a base station, the base station being capable of performing simultaneous communications with a number of subscriber stations by allocating an available bandwidth among the subscriber stations, the subscriber stations being required to issue bandwidth requests in order to obtain and/or maintain a connection with the base station, and communications between the subscriber stations and the base station being performed partly or wholly through the relay station, wherein the relay station comprises: a detector for bandwidth requests issued from a plurality of the subscriber stations;a combiner arranged to form at least one combined bandwidth request from the detected requests; anda transmitter for transmitting the combined bandwidth request to the base station; wherein:the relay station is responsive to a notification of reserved bandwidth received from the base station, to allocate the reserved bandwidth among the plurality of subscriber stations; andeach connection between a subscriber station and the base station has a connection identifier, the bandwidth request from the subscriber stations including connection identifiers, and the relay station transmitting said combined bandwidth request with a single existing connection identifier which is associated with all connection identifiers used by the subscriber stations connected to the relay station without information identifying each of the subscriber stations. 24. The relay station according to claim 23, wherein communication in said system is performed through exchange of packets and the transmitter is arranged to transmit the combined bandwidth request in a medium access control layer header of such a packet. 25. The relay station according to claim 23, wherein the combined bandwidth request includes details of individual bandwidth requests detected by said detector. 26. The relay station according to claim 25, wherein the notification of reserved bandwidth received from the base station includes information on an individual amount of bandwidth for each subscriber station to be allocated by the relay station. 27. The relay station according to claim 23, wherein the combined bandwidth request does not include details of individual bandwidth requests detected by said detector. 28. The relay station according to claim 27, wherein the notification of reserved bandwidth includes an aggregate amount of bandwidth and the relay station is arranged to partition the reserved bandwidth among the plurality of subscriber stations. 29. The relay station according to claim 23, wherein the combiner classifies the detected bandwidth requests into urgent and non-urgent requests. 30. The relay station according to claim 29, wherein the combiner is arranged to form separate combined bandwidth requests using the urgent and the non-urgent requests respectively. 31. The relay station according to claim 30, wherein the transmitter is arranged for immediately transmitting a combined bandwidth request formed using urgent requests, whilst delaying transmission of a combined bandwidth request formed using non-urgent requests. 32. The relay station according to claim 31, wherein the transmitter is arranged to wait for a predetermined time period to elapse before transmitting the combined bandwidth request formed from non-urgent requests. 33. The relay station according to claim 23, wherein each connection between a subscriber station and the base station is assigned one of a plurality of levels of quality-of-service (QoS), and wherein the relay station classifies the detected bandwidth requests based on the QoS. 34. The relay station according to claim 33, wherein each connection between a subscriber station and the base station has a connection ID with which QoS information is associated, and said classifying involves obtaining the QoS based on the connection ID. 35. The relay station according to claim 23, wherein the detector is arranged to detect a bandwidth request from at least one further relay station, the further relay station performing the same role as said relay station in relation to further subscriber stations, and said combiner is arranged to use that bandwidth request in forming said combined bandwidth request. 36. A base station for use in a wireless communication system in which subscriber stations are each operable for communication with the base station, the base station being capable of performing simultaneous communications with a number of subscriber stations by allocating an available bandwidth among the subscriber stations, the subscriber stations being required to issue bandwidth requests in order to obtain and/or maintain a connection with the base station, and communications between the subscriber stations and the base station being performed partly or wholly through at least one relay station, wherein the relay station detects bandwidth requests issued from a plurality of the subscriber stations and transmits a combined bandwidth request to the base station; the base station comprising: a decoder for decoding the combined bandwidth request received from the relay station;a processor, responsive to results of said decoding to reserve bandwidth for the plurality of subscriber stations; anda transmitter for informing the relay station of the reserved bandwidth;wherein each connection between a subscriber station and the base station has a connection identifier, the bandwidth request from the subscriber stations including connection identifiers, and the relay station transmitting said combined bandwidth request with a single existing connection identifier which is associated with all connection identifiers used by the subscriber stations connected to the relay station without information identifying each of the subscriber stations. 37. The base station according to claim 36, wherein communication in said system is performed through exchange of packets and the decoder is arranged to decode the combined bandwidth request in a medium access control layer header of such a packet. 38. The base station according to claim 36, wherein the decoder is arranged to extract details of individual bandwidth requests made by the subscriber stations and contained in the combined bandwidth request. 39. The base station according to claim 38, wherein the processor is arranged to reserve an individual amount of bandwidth for each subscriber stations, said transmitter informing the relay station of the individual amounts of bandwidth. 40. The base station according to claim 36, wherein in the event that the combined bandwidth request does not include details of individual bandwidth requests, the processor reserves an aggregate amount of bandwidth for the subscriber stations, said transmitter informing the relay station of the aggregate amount of bandwidth.
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