Abstract:
A method and an apparatus for inferring a status report generation time in a mobile communication system are provided to prevent unnecessary retransmission due to an error in an initial reception time by regarding an initial reception time of an HARQ packet as the status report generation time. When a status report generation condition is satisfied during a reception of an ARQ(Automatic Repeat Request) packet from an ARQ transmitter side, a status report generator(740) informs a transmission controller of data to be transmitted. When the transmission controller permits the data transmission, the status report generator generates a status report by referring to a reception status of the ARQ packet by the data transmission permission time. The transmission controller(705) analyzes the status report, informs a stored data amount to a lower layer, receives the amount of data to be transmitted in a next transmission period from the lower layer, and determines the data to be transmitted in the next transmission period. A transceiver(735) transmits the status report to the ARQ receiver side.
Abstract:
A method for discontinuously receiving packets in a mobile communication system and an apparatus thereof are provided to reduce a transmission delay and to prevent degradation of the service quality in a mobile communication system supporting a DRX mode. A method for discontinuously receiving packets in a mobile communication system comprises the following several steps. A terminal receives DRX(Discontinuous Reception) configuration information for an arbitrary service, signaled from a base station(505). The terminal monitors a downlink shared control channel until a packet transmitted thereto occurs(510). The terminal determines whether there is any packet transmitted thereto in the course of monitoring control information on the downlink shared control channel(515). Upon detecting a packet transmitted thereto by checking the control information, the terminal stores a reception time of the downlink shared control channel, and then receives a packet at a packet reception time allocated thereto by performing a specific HARQ(Hybrid Automatic Repeat Request) operation(520). The terminal determines whether the received packet is a DRX service packet(525). When the received packet is not a DRX service packet, the terminal initializes the stored reception time of the downlink shared control channel(530) and returns to step 510 where it continues to monitor the downlink shared control channel. When the received packet is a DRX service packet, the terminal recognizes the stored reception time of the downlink shared control channel as a starting point of the DRX cycle(535), and it performs a DRX operation(540).
Abstract:
A method and an apparatus for buffering Tx packets in a mobile communication system are provided to minimize the signaling between an AGW(Access GateWay) and an ENB(Enhanced Node B) by enabling a PDCP(Packet Data Convergence Protocol) entity to independently discard Tx packets according to regular conditions. If the RRC entity of a network decides not to use a PDCP buffer(725), the RRC entity transmits a PDCP buffering disable message to the RRC entity of a UE(User Equipment)(730). Also the network RRC entity transmits the PDCP buffering disable message to the PDCP entity of the network(735). The UE RRC entity, receiving the PDCP buffering disable message, directs the PDCP entity of the UE not to store PDCP SDUs(Service Data Units) in the PDCP buffer(740). The PDCP entity of the network and the PDCP entity of the UE do not store PDCP SDUs according to the PDCP buffering disable message(745,750). Afterwards, in case the network RRC entity decides to store PDCP SDUs in the PDCP buffer(755), the network RRC entity transmits a PDCP buffering enable message to the UE RRC entity and the network PDCP entity(760,765).
Abstract:
An apparatus and a method for transceiving an ARQ(Automatic Retransmission reQuest) packet in a mobile communication system are provided to reduce overhead of a wireless channel by increasing the usage efficiency of a wireless resource by transmitting one of a CSN(Ciphering Serial Number) and an ASN(ARQ Serial Number) through a wireless channel. A method for transceiving an ARQ packet in a mobile communication system includes the steps of: receiving a ciphered packet into which a CSN is inserted from an anchor node(725); setting an ASN, and calculating a difference value between the CSN and the ASN(730); and transmitting the calculated difference value and the set ASN with the ciphered packet(755). The ASN set step includes a step of: setting the ASN to be the same as the CSN, checking a packet loss by checking the CSN of the received packet, and transmitting information for the packet loss to a receiver if the packet loss exists.
Abstract:
A method and apparatus for configuring a TFCS in a mobile communication system are provided. TrCH configuration information and TFCS configuration information are received in a TrCH establishment message from an RNC. A CTFC set including all possible combinations of TFs of different transport channels is calculated according to the TrCH configuration information. A determination is made as to whether the TFCS configuration information includes a TFC-CTFC auto mapping indicator. If the TFCS configuration information includes the TFC-CTFC auto mapping indicator, CTFCs included in the CTFC set are mapped to TFCs in a one-to-one correspondence.
Abstract:
A signaling method of radio bearer information and a network therefor are provided to reduce a signaling overhead of a network by avoiding duplicating of information related to RB(Radio Bearer) common configuration no matter whether it is actual common configuration information or a reference value with respect to the actual common configuration information. In a cellular communication network having multiple cells and one or more MBMS(Multimedia Broadcast/Multicast Service) providers for providing multiple MBMSs to mobile communication devices located in the current cells, RB configuration information is provided to allow the mobile devices can receive the MBMSs. In this case, messages including the RB configuration related information, which are related to the multiple MBMSs that can be received by the mobile devices when they are in the current cells, are provided to the mobile devices, periodically.
Abstract:
A method for efficiently utilizing radio resources by using predefined length indicator information in a mobile communication system which supports a voice service via a packet network is provided to avoid inserting plural information for expressing a start position/termination position of an RLC(Radio Link Control) SDU(Service Data Unit) by using one bit information for expressing that size of the RLC SDU is the same as that of an RLC PDU(Protocol Data Unit). A method for efficiently utilizing radio resources by using predefined length indicator information in a mobile communication system which supports a voice service via a packet network comprises the following several steps. A sending side RLC layer receives an RLC SDU from an upper layer(705). The sending side RLC layer notifies a lower layer of the size and the number of PDUs of the received RLC SDU(710). The sending side RLC layer waits till the lower layer notifies the size and the number of the PDUs to be used in the next transmission range(715). The RLC layer checks whether the size of the PDUs, notified by the lower layer, is the same as the size of the SDU and it is necessary to transmit LI '0000 000' via the RLC PDU. In case that the size of the PDUs, notified by the lower layer, is the same as the size of the SDU and it is not necessary to transmit LI '0000 000' via the RLC PDU, the RLC layer sets an F field with 0(725), inserts the RLC SDU into a data field of the RLC PDU without using the LI(730), and sends the RLC PDU to the lower layer(735). In case that the size of the PDUs, notified by the lower layer, is not the same as the size of the SDU or it is necessary to transmit LI '0000 000' via the RLC PDU, RLC layer sets the F field with 1(740), checks whether there exists an intermediate RLC PDU among the RLC PDUs(745), inserts a newly defined LI '1111 110' into the RLC PDU if it exists, and submits the RLC PDU to the lower layer(750).
Abstract:
본 발명은 이동통신 시스템에서 복수의 셀들로부터의 수신 데이터를 컴바이닝하는 방법 및 장치로서, 멀티미디어 방송 멀티캐스트 서비스(MBMS) 시스템에서 복수의 셀들로부터의 수신 데이터를 컴바이닝하는 방법에 있어서, 단말이 위치하는 현재 셀에서 인접 셀들간의 인접 셀 레이크 컴바이닝 정보를 수신하는 과정과, 상기 현재 셀과 상기 인접 셀들로부터의 데이터를 수신하는 과정과, 상기 인접 셀들 중 상기 인접 셀 레이크 컴바이닝 정보에 따른 해당 인접 셀들의 수신 데이터를 레이크 컴바이닝하는 과정과, 상기 현재 셀의 수신 데이터와 상기 레이크 컴바이닝된 데이터 및, 상기 인접 셀들 중 상기 레이크 컴바이닝 정보에 관련되지 않은 나머지 인접 셀들의 수신 데이터를 선택 컴바이닝 혹은 소프트 컴바이닝 하는 과정을 포함하는 것을 특징으� �� 한다. MBMS(Multimedia Multicast/Broadcast Service), L1-combining, Rake combining, Neighbouring cell
Abstract:
본 발명은 멀티미디어 방송/다중방송 서비스(MBMS)를 지원하는 이동통신시스템에 있어서, 상기 MBMS에 대한 데이터의 전송을 하는 데이터 전송 채널과 상기 MBMS에 대한 제어 정보를 전송하는 제어 채널를 구별하는 방법을 제공한다. 이때, 상기 채널들을 구별함에 있어서, 사용되는 식별자의 오버헤드를 최소화한다.
Abstract:
본 발명은 이동통신 네트워크를 통해 서비스를 제공받는 연결상태 단말들에 대해 도메인별 접근제한 수행하는 방법에 관한 것이다. 단말은 상기 무선 네트워크 제어기(RNC)로부터 방송되는 상기 도메인들에 대한 도메인 접근제한 파라미터를 수신하여 저장한 후, 상기 RNC와 RRC 접속을 설정하고 상기 도메인들 중 하나에 접근하기 위하여 상기 저장된 도메인 접근제한 파라미터를 확인한다. 상기 확인결과 상기 접속하고자 하는 도메인으로의 접근이 제한되어 있으면 상기 접근을 포기하고, 제한되어 있지 않으면 상기 접속하고자 하는 도메인으로의 접근을 시도한다. RNC는 상기 도메인 접근제한 파라미터가 변경되면, 상기 RNC와 RRC 접속을 설정하고 있는 연결상태 이동 단말들에게 상기 변경된 도메인 접근제한 파라미터를 통보하거나, 또는 연결상태 단말들이 상기 방송되는 상기 도메인 접근제어 파라미터를 수신할 수 있도록 상기 연결상태 단말들의 접속을 해제한다. 이러한 본 발명은 연결상태 단말들에 대해서도 도메인별 접근제한을 수행하여 접근제한된 도메인으로 연결상태의 트래픽이 추가 발생하지 않도록 한다.