IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0419813
(1999-10-18)
|
우선권정보 |
JP-0313918 (1998-10-19) |
발명자
/ 주소 |
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출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
5 인용 특허 :
4 |
초록
▼
A wireless asynchronous transfer mode communication system performs wireless communications in an asynchronous transfer mode between an access point connected to a network and at least one mobile terminal present in an area covered by the access point. If a received wireless ATM cell is a broadcast
A wireless asynchronous transfer mode communication system performs wireless communications in an asynchronous transfer mode between an access point connected to a network and at least one mobile terminal present in an area covered by the access point. If a received wireless ATM cell is a broadcast wireless ATM cell based on the header information in the received wireless ATM cell, then the mobile terminal compares the header information in the received wireless ATM cell and connection information registered in the mobile terminal itself. If there is agreeing connection information, then the mobile terminal discards the received wireless ATM cell. If there is no agreeing connection information, then the mobile terminal accepts the received wireless ATM cell.
대표청구항
▼
A wireless asynchronous transfer mode communication system performs wireless communications in an asynchronous transfer mode between an access point connected to a network and at least one mobile terminal present in an area covered by the access point. If a received wireless ATM cell is a broadcast
A wireless asynchronous transfer mode communication system performs wireless communications in an asynchronous transfer mode between an access point connected to a network and at least one mobile terminal present in an area covered by the access point. If a received wireless ATM cell is a broadcast wireless ATM cell based on the header information in the received wireless ATM cell, then the mobile terminal compares the header information in the received wireless ATM cell and connection information registered in the mobile terminal itself. If there is agreeing connection information, then the mobile terminal discards the received wireless ATM cell. If there is no agreeing connection information, then the mobile terminal accepts the received wireless ATM cell. gement analysis logic capable of: receiving an acknowledgement in a second frame in response to transmitting the data within the frame; determining that a first portion of the data was unsuccessfully transmitted and a second portion of the data was successfully transmitted; and identifying a second portion of the memory corresponding to the second portion of the data in response to receiving the acknowledgement, wherein the second portion is a subset of the first portion; and an access controller capable of transferring new data from the source to the second portion of the memory according to a priority scheme that determines the sequence of the data transfer. 11. The method of claim 10, further including control logic capable of updating a corresponding memory location in the source with new data in response to determining if the data transmits successfully. 12. The apparatus of claim 11, wherein the frame comprises one or more slots, each slot capable of carrying data, and wherein the acknowledgement analysis logic includes a first link table capable of identifying active slots. 13. The apparatus of claim 12, wherein the frame comprises one or more slots, each slot capable of carrying data, and wherein the first link table is capable of associating each active slot with at least one corresponding memory location. 14. The apparatus of claim 13, wherein the acknowledgement analysis logic includes a second link table capable of associating the logical bearer numbers to the slots. 15. The apparatus of claim 14, wherein the second link table is capable of being updated substantially simultaneously in response to an update to the first link table. 16. The apparatus of claim 15, wherein the acknowledgement analysis logic is capable of: extracting the acknowledgements on logical bearer numbers; finding the slots corresponding to logical bearer numbers using the second link table; indexing the first link table using the slots to determine if those slots are active; and identifying the memory locations associated with the active slots. 17. The apparatus of claim 16, wherein the acknowledgement analysis logic is capable of setting a control bit for each slot indicating whether new data is required in response to determining if the data transmits successfully. 18. The apparatus of claim 10, wherein the first portion of the memory comprises a plurality of buffers and the second portion comprises at least a subset of the plurality of the buffers. 19. The apparatus of claim 18, wherein the access controller is capable of transferring the second portion of the data according to the priority scheme includes transferring the second portion of the data to the subset of plurality of buffers based on the order the data from the plurality of buffers is transmitted. 20. The apparatus of claim 19, wherein the access controller is capable of transferring a portion of data from the source at least one of the plurality of buffers while substantially simultaneously determining if another buffer requires new data. 21. An apparatus, comprising: means for defining a first portion of a memory for receiving data; means for transmitting the data from the first portion of the memory within a frame; means for receiving an acknowledgement in a second frame indicating that a first portion of the data was unsuccessfully transmitted and a second portion of the data was successfully transmitted in response to transmitting the data within the frame; means for identifying a second portion of the memory corresponding to the second portion of the data in response to receiving the acknowledgement, wherein the second portion is a subset of the first portion; and means for transferring new data to the second portion of the memory according to a priority scheme that determines the sequence of the data transfer. 22. A method for providing data to a plurality of buffers, comprising: receiving an acknowledgement in a frame indicating that a first portion of current data in the plurality of buffers transmitted successfully and that a second portion of current data in the plurality of buffers transmitted unsuccessfully; transferring new data to the first portion of the plurality of buffers according to a priority scheme; and transmitting the new data from the first portion of buffers and the second portion of current data. 23. The method of claim 22, wherein transferring the new data to the first portion of the plurality of buffers according to the priority scheme comprises transferring new data to the first portion of the plurality of buffers based on the order the data in the plurality of buffers are transmitted. 24. The method of claim 22, wherein receiving the acknowledgement comprises: extracting the acknowledgement on logical bearer numbers; finding at least one slot corresponding to logical bearer numbers, wherein the at least one slot is associated with at least one of the plurality of buffers; determining if the slot is active; and identifying the at least one buffer associated with the active slot. 25. The method of claim 24, wherein receiving the acknowledgement comprises setting a control bit for each slot indicating whether new data is required in response to determining if the data transmits successfully. 26. A method, comprising: receiving an acknowledgement in a frame in response to transmitting data in a frame, wherein the frame comprises a plurality of slots, and wherein each slot has at least one corresponding buffer; determining, on a slot-by-slot basis, whether the data in each of the plurality of slots was successfully transmitted; determining a first portion of the plurality of buffers corresponding to the plurality of slots containing data that was successfully transmitted; and providing new data to the first portion of the plurality of buffers according to a priority scheme. 27. The method of claim 26, wherein providing the new data to the first portion of the plurality of buffers according to the priority scheme comprises providing the new data to the first portion of the plurality of buffers based on the order the data in the plurality of buffers are transmitted. 28. The method of claim 26, wherein receiving the acknowledgement comprises: extracting the acknowledgement on logical bearer numbers; finding at least one slot corresponding to logical bearer numbers; determining if the slot is active; and identifying the at least one buffer corresponding to the active slot. 29. The method of claim 26, wherein receiving the acknowledgement comprises setting a control bit for each slot indicating whether new data is required in response to determining if the data transmits successfully. 30. An apparatus, comprising: a source for providing data; a memory having a plurality of buffers configured to receive the data from the source; transmission logic for transmitting the data from the plurality of buffers within a frame; acknowledgement analysis logic capable of receiving an acknowledgement in a second frame indicating that a first portion of data in the plurality of buffers transmitted successfully and that a second portion of data in the plurality of buffers transmitted unsuccessfully; and an access controller capable of: transferring new data to the first portion of the plurality of buffers according to a priority scheme; and transmitting the new data from the first portion of buffers and the second portion of current data in a subsequent frame. 31. The apparatus of claim 30, wherein the access controller is capable of transferring new data to the first portion of the plurality of buffers based on the order the data in the plurality of buffers are transmitted. 32. The apparatus of claim 30, wherein the acknowledgement analysis logic is capable of: extracting the acknowledgement on logical bearer numbers; finding at least one slot corresponding to logical bearer numbers, wherein the at least one slot is ass ociated with at least one of the plurality of buffers; determining if the slot is active; and identifying the at least one buffer associated with the active slot. 33. The apparatus of claim 30, wherein the acknowledgement analysis logic is capable of setting a control bit indicating whether new data is required in response to determining if the data transmits successfully. 34. An apparatus, comprising: a source for providing data; a memory having a plurality of buffers configured to receive the data from the source; transmission logic for transmitting the data from the plurality of buffers within a frame, wherein the frame comprises a plurality of slots, and wherein each slot is associated with at least one of the plurality of buffers; acknowledgement analysis logic capable of: receiving an acknowledgement in a second frame in response to transmitting data in the frame; determining, on a slot-by-slot basis, whether the data in each of the plurality of slots was successfully transmitted; and an access controller capable of: determining a first portion of the plurality of buffers corresponding to the plurality of slots containing data that was successfully transmitted; and providing new data to the first portion of the plurality of buffers according to a priority scheme. 35. The apparatus of claim 34, wherein the access controller is capable of providing the new data to the first portion of the plurality of buffers based on the order the data in the plurality of buffers are transmitted. 36. The apparatus of claim 34, wherein the acknowledgement analysis logic is capable of: extracting the acknowledgement on logical bearer numbers; finding at least one slot corresponding to the logical bearer numbers; determining if the slot is active; and identifying the at least one buffer corresponding to the active slot. 37. The apparatus of claim 34, wherein the acknowledgement analysis logic is capable of setting a control bit for each slot indicating whether new data is required in response to determining if the data transmits successfully.
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