Method for operating enhanced RLC entity and RNC entity for WCDMA and system thereof
A method for operating an RLC entity and a MAC entity in a Universal Mobile Telecommunications System (UMTS), the European IMT-2000 system. A format of a MAC-has PDU is optimized in a MAC-hs entity, so that a large number of users can be supported with using less resources when a VoIP service is provided in one cell.
1. A method of processing data units in a mobile communications system, the method comprising:
receiving a plurality of size information for a Radio Link Control (RLC) Protocol Data Unit (PDU) from a Radio Resource Control (RRC) entity;
generating the RLC PDU from at least one RLC Service Data Unit (SDU), wherein a size of the RLC PDU is configured depending on the received one of the plurality of size information for the RLC PDU; and
transferring the RLC PDU to a Medium Access Control (MAC) entity,
wherein the RLC PDU is transferred to the MAC entity via a logical channel,
wherein the MAC entity generates a MAC-hs PDU including the RLC PDU,
wherein the generated MAC-hs PDU corresponds to a specific queue used for a Voice over Internet Protocol (VoIP) service,
wherein a size of each header field of the MAC-hs PDU is set by the specific queue,
wherein a Size Index Identifier (SID) field of the MAC-hs PDU is set to have a length of 4 bits or 5 bits in the specific queue,
wherein a Number (N) field is not included in the header field of the MAC-hs PDU, and
wherein a number of bits of a Transmission Sequence Number (TSN) of the MAC-hs PDU is set to have a length of 3 bits.
2. The method of claim 1 , wherein the size of the configured RLC PDU is selected from the plurality of size information.
3. The method of claim 2 , wherein the size of the configured RLC PDU is selected from the plurality of size information based on an assigned radio resource.
4. The method of claim 1 , wherein the RLC PDU includes at least user data or control information.