Patent application number | Description | Published |
20090028111 | NODE B AND RNC ACTIONS DURING A SERVING HSDPA CELL CHANGE - An apparatus and method in accordance with the present invention reduce the amount of data that is stalled in a source Node B after a serving HS-DSCH cell change in a communication system that includes a serving RNC and at least one Node B. In a first embodiment, the RNC temporarily suspends data transmissions from the RNC to the Node B. In a second embodiment, the activation time is used in data scheduling. In a third embodiment, a more robust MCS level is selected. In a fourth embodiment flow control is employed for the data transmitted between the RNC and the Node B. | 01-29-2009 |
20090028123 | SYSTEM FOR PERMITTING CONTROL OF THE PURGING OF A NODE B BY THE SERVING RADIO NETWORK CONTROLLER - A system and method which permit the RNC to control purging of data buffered in the Node B. The RNC monitors for a triggering event, which initiates the purging process. The RNC then informs the Node B of the need to purge data by transmitting a purge command, which prompts the Node B to delete at least a portion of buffered data. The purge command can include instructions for the Node B to purge all data for a particular UE, data in one or several user priority transmission queues or in one or more logical channels in the Node B, depending upon the particular data purge triggering event realized in the RNC. | 01-29-2009 |
20090083603 | Radio Resource Control-Service Data Unit Reception - A method for receiving periodic transmissions of a segmented communication is disclosed. The segmented communication is received and each segment of the segmented communication is examined to determine if the segment is valid. Valid segments are stored, while invalid segments are discarded. Next, it is computed when the invalid segments will be retransmitted. A subsequent transmission of the communication is received and a retransmission of a previously identified invalid segment is extracted, the retransmitted segment being located based on the computation. The retransmitted segment is examined to determine if it is valid. | 03-26-2009 |
20090141698 | BINARY-TREE MULTIPLEXING SCHEDULING - Multiplexed scheduling of information blocks from multiple sources on a single communication channel divided into multiple address positions is performed. The information block from each source has a repetition period and is divided into a number of segments. A bandwidth adequacy verification is performed for expected information blocks to be scheduled on the channel. Mapping positions are assigned corresponding to nodes in a binary tree, whereby each layer of the binary tree corresponds to a repetition period of the respective information block. Assignment of the information blocks to the binary tree is based on a priority order of repetition period of the respective information block. | 06-04-2009 |
20100202398 | SYSTEM FOR EFFICIENT RECOVERY OF NODE-B BUFFERED DATA FOLLOWING MAC LAYER RESET - A method and system for the UE and RNC to reduce transmission latency and potentially prevent loss of PDUs upon a MAC layer reset. UE generation of the status PDU is coupled with the MAC layer reset. The RNC generates a message with a MAC reset indication. Following the MAC layer reset all PDUs stored in the UE MAC layer reordering buffers are flushed to RLC entities and then processed by RLC entities prior to the generation of a PDU status report. The PDU status report provides to the RNC the status of all successfully received PDUs. Upon reception of a PDU status report in the RNC, missing PDUs are realized and retransmitted to the UE. | 08-12-2010 |
20100226316 | SYSTEM AND METHOD FOR PRIORITIZATION OF RETRANSMISSION OF PROTOCOL DATA UNITS TO ASSIST RADIO-LINK-CONTROL RETRANSMISSION - A medium access control (MAC) architecture reduces transmission latency for data block retransmissions. A plurality of data blocks are received and temporarily stored in a first memory (e.g., queue, buffer). The plurality of data blocks are then transmitted. A determination is made as to whether each of the transmitted data blocks was received successfully or needs to be retransmitted because the data block was not received successfully. Each of the transmitted data blocks that needs to be retransmitted is marked and temporarily stored in a second memory having a higher priority than the first memory. The marked data blocks are retransmitted before data blocks stored in the first memory location. | 09-09-2010 |
20110194470 | EFFICIENT MEMORY ALLOCATION IN A WIRELESS TRANSMIT/RECEIVER UNIT - The present invention allows for effective sharing of the hardware memory of a wireless transmit receive unit (WTRU). The memory will be shared among various buffers of different entities. More particularly, memory will be shared among the MAC reordering buffers and the RLC reception buffers. | 08-11-2011 |
20120039224 | SYSTEM AND METHOD FOR PRIORITIZATION OF RETRANSMISSION OF PROTOCOL DATA UNITS TO ASSIST RADIO-LINK-CONTROL RETRANSMISSION - A medium access control (MAC) architecture reduces transmission latency for data block retransmissions. A plurality of data blocks are received and temporarily stored in a first memory (e.g., queue, buffer). The plurality of data blocks are then transmitted. A determination is made as to whether each of the transmitted data blocks was received successfully or needs to be retransmitted because the data block was not received successfully. Each of the transmitted data blocks that needs to be retransmitted is marked and temporarily stored in a second memory having a higher priority than the first memory. The marked data blocks are retransmitted before data blocks stored in the first memory location. | 02-16-2012 |
20120170550 | HS-DSCH INTER-NODE B CELL CHANGE - A radio resource control (RRC) message is received by a radio resource control (RRC) device of a user equipment (UE). The RRC message notifies the FDD UE of a high speed dedicated shared channel (HS-DSCH) inter-Node B cell change. A reordering buffers of a medium access controller-high speed (MAC-hs) is flushed in response to the receiving the RRC message. A status report is generated for each acknowledge mode (AM) RLC instance mapped to the HS-DSCH by a radio link control (RLC) device after the MAC-hs flushes the reordering buffer. Each status report indicates missing AM RLC packet data units (PDUs). The RRC device sends a “TRANSPORT CHANNEL RECONFIGURATION COMPLETE” message on a DCCH after the RLC device generates each status report. | 07-05-2012 |
20120195194 | COGNITIVE FLOW CONTROL BASED ON CHANNEL QUALITY CONDITIONS - A system and method which improve the performance of a wireless transmission system by intelligent use of the control of the flow of data between a radio network controller (RNC) and a Node B. The system monitors certain criteria and, if necessary, adaptively increases or decreases the data flow between the RNC and the Node B. This improves the performance of the transmission system by allowing retransmitted data, signaling procedures and other data to be successfully received at a faster rate, by minimizing the amount of data buffered in the Node B. Flow control is exerted to reduce buffering in the Node B upon degradation of channel qualities, and prior to a High Speed Downlink Shared Channel (HS-DSCH) handover. | 08-02-2012 |
20120230197 | SYSTEM FOR PERMITTING CONTROL OF THE PURGING OF A NODE B BY THE SERVING RADIO NETWORK CONTROLLER - A system and method which permit the RNC to control purging of data buffered in the Node B. The RNC monitors for a triggering event, which initiates the purging process. The RNC then informs the Node B of the need to purge data by transmitting a purge command, which prompts the Node B to delete at least a portion of buffered data. The purge command can include instructions for the Node B to purge all data for a particular UE, data in one or several user priority transmission queues or in one or more logical channels in the Node B, depending upon the particular data purge triggering event realized in the RNC. | 09-13-2012 |
20130142044 | COGNITIVE FLOW CONTROL BASED ON CHANNEL QUALITY CONDITIONS - A system and method which improve the performance of a wireless transmission system by intelligent use of the control of the flow of data between a radio network controller (RNC) and a Node B. The system monitors certain criteria and, if necessary, adaptively increases or decreases the data flow between the RNC and the Node B. This improves the performance of the transmission system by allowing retransmitted data, signaling procedures and other data to be successfully received at a faster rate, by minimizing the amount of data buffered in the Node B. Flow control is exerted to reduce buffering in the Node B upon degradation of channel qualities, and prior to a High Speed Downlink Shared Channel (HS-DSCH) handover. | 06-06-2013 |
20130301417 | SYSTEM FOR PERMITTING CONTROL OF THE PURGING OF A NODE B BY THE SERVING RADIO NETWORK CONTROLLER - A system and method which permit the RNC to control purging of data buffered in the Node B. The RNC monitors for a triggering event, which initiates the purging process. The RNC then informs the Node B of the need to purge data by transmitting a purge command, which prompts the Node B to delete at least a portion of buffered data. The purge command can include instructions for the Node B to purge all data for a particular UE, data in one or several user priority transmission queues or in one or more logical channels in the Node B, depending upon the particular data purge triggering event realized in the RNC. | 11-14-2013 |
20140036671 | SYSTEM AND METHOD FOR PRIORITIZATION OF RETRANSMISSION OF PROTOCOL DATA UNITS TO ASSIST RADIO LINK CONTROL RETRANSMISSION - Managing the transmission and retransmission of radio link control (RLC) data protocol data units (PDUs) is disclosed. An indication is received that an RLC data PDU was not successfully received by a receiving device. The RLC data PDU, that was not successfully received, is retransmitted, and prioritized over non-retransmitted RLC data PDUs. A number of times that the RLC data PDU was retransmitted is determined. | 02-06-2014 |
20140192778 | NODE B AND RNC ACTIONS DURING A SERVING HSDPA CELL CHANGE - An apparatus and method in accordance with the present invention reduce the amount of data that is stalled in a source Node B after a serving HS-DSCH cell change in a communication system that includes a serving RNC and at least one Node B. In a first embodiment, the RNC temporarily suspends data transmissions from the RNC to the Node B. In a second embodiment, the activation time is used in data scheduling. In a third embodiment, a more robust MCS level is selected. In a fourth embodiment flow control is employed for the data transmitted between the RNC and the Node B. | 07-10-2014 |
20140192779 | SYSTEM FOR EFFICIENT RECOVERY OF NODE-B BUFFERED DATA FOLLOWING MAC LAYER RESET - A method and system for the UE and RNC to reduce transmission latency and potentially prevent loss of PDUs upon a MAC-hs layer reset. The RNC generates a radio resource control (RRC) message with a MAC-hs reset indication. The MAC reset indication requires the UE to flush buffers for configured HARQ processes, disassemble MAC protocol data units (PDUs) in the reordering buffers, deliver MAC-d PDUs to a MAC-d layer, and configure the MAC-hs to receive new data. | 07-10-2014 |
20140362826 | HS-DSCH INTER-NODE B CELL CHANGE - A radio resource control (RRC) message is received by a radio resource control (RRC) device of a user equipment (UE). The RRC message notifies the FDD UE of a high speed dedicated shared channel (HS-DSCH) inter-Node B cell change. A reordering buffers of a medium access controller-high speed (MAC-hs) is flushed in response to the receiving the RRC message. A status report is generated for each acknowledge mode (AM) RLC instance mapped to the HS-DSCH by a radio link control (RLC) device after the MAC-hs flushes the reordering buffer. Each status report indicates missing AM RLC packet data units (PDUs). The RRC device sends a “TRANSPORT CHANNEL RECONFIGURATION COMPLETE” message on a DCCH after the RLC device generates each status report. | 12-11-2014 |
20150043507 | APPARATUS AND METHOD FOR PRIORITIZATION OF RETRANSMISSION OF PROTOCOL DATA UNITS TO ASSIST RADIO LINK CONTROL RETRANSMISSION - Managing the transmission and retransmission of radio link control (RLC) data protocol data units (PDUs) is disclosed. An indication is received that an RLC data PDU was not received by a receiving device. The RLC data PDU, that was not received, is retransmitted and prioritized over other RLC data PDUs. A number of times that the RLC data PDU was retransmitted may be tracked. | 02-12-2015 |