Abstract: A method for validating radio resource control (RRC) messages begins by receiving a RRC message at a wireless transmit/receive unit (WTRU) from a radio access network. A determination is made at the WTRU whether the message is valid by applying a predetermined validation rule. The WTRU accepts the message if the message is valid. The WTRU rejects the message if the message is not valid. The message is rejected unless a new transport format combination set (TFCS) is provided, until the WTRU enters a CELL_DCH state, or both.

Abstract: A method and apparatus for reliably transmitting data by transmitting a plurality of radio link control (RLC) unacknowledged mode (UM) protocol data units (PDUs) over at least one primary channel and at least one auxiliary channel. If at least one RLC UM PDU is missing from the data transmitted over the primary channel, the missing RLC UM PDU is obtained from the auxiliary channel after a predetermined delay. A service data unit (SDU) is completed by combining PDUs received over the primary channel with at least one missing PDU received over the auxiliary channel. The SDU is sent to an application layer. If the missing PDU cannot be obtained before a predetermined time period expires, the transmitted data is deleted. The RLC UM PDUs may be used for streaming multicast applications.

Abstract: A method and apparatus for compiling a protocol data unit (PDU) having a predetermined length from at least one data block for transmission in a wireless communication system. At least one data block is designated for transmission. The data block is first stored in a memory. A data block information list and a data block address list are generated for the data block. The data block information list contains the length of the data block which is to be included within the PDU and the data block address list contains the memory address of data block which is to be included in the PDU. The PDU is then compiled utilizing the data block information list and the data block address list when the PDU is ready for transmission.

Abstract: A method and apparatus for reliably transmitting data by transmitting a plurality of radio link control (RLC) unacknowledged mode (UM) protocol data units (PDUs) over at least one primary channel and at least one auxiliary channel. If at least one RLC UM PDU is missing from the data transmitted over the primary channel, the missing RLC UM PDU is obtained from the auxiliary channel after a predetermined delay. A service data unit (SDU) is completed by combining PDUs received over the primary channel with at least one missing PDU received over the auxiliary channel. The SDU is sent to an application layer. If the missing PDU cannot be obtained before a predetermined time period expires, the transmitted data is deleted. The RLC UM PDUs may be used for streaming multicast applications.

Abstract: A method for validating radio resource control (RRC) messages begins by receiving a RRC message at a wireless transmit/receive unit (WTRU) from a radio access network. A determination is made at the WTRU whether the message is valid by applying a predetermined validation rule. The WTRU accepts the message if the message is valid. The WTRU rejects the message if the message is not valid. The message is rejected unless a new transport format combination set (TFCS) is provided, until the WTRU enters a CELL_DCH state, or both.

Abstract: A wireless transmit receive unit (WTRU) and a method used in a WTRU for controlling wireless communication Packet Switched (PS) data flow on radio access bearers (RABs) between a radio link controller (RLC) and an Internet Protocol Relay (IPR). A combined Radio Access Bearer Manager/Packet Data Convergence Protocol (RABM/PDCP) component provides interface control with a Session Manager (SM) and a radio resource center (RRC) such that the processing of PS data and control of each RAB is associated with the processing of PS data and control of a single radio bearer (RB).

Abstract: A wireless transmit receive unit (WTRU) and a method used in a WTRU for controlling wireless communication Packet Switched (PS) data flow on radio access bearers (RABs) between a radio link controller (RLC) and an Internet Protocol Relay (IPR). A combined Radio Access Bearer Manager/Packet Data Convergence Protocol (RABM/PDCP) component provides interface control with a Session Manager (SM) and a radio resource center (RRC) such that the processing of PS data and control of each RAB is associated with the processing of PS data and control of a single radio bearer (RB).

Abstract: A method and apparatus for compiling a protocol data unit (PDU) having a predetermined length from at least one data block for transmission in a wireless communication system. At least one data block is designated for transmission. The data block is first stored in a memory. A data block information list and a data block address list are generated for the data block. The data block information list contains the length of the data block which is to be included within the PDU and the data block address list contains the memory address of data block which is to be included in the PDU. The PDU is then compiled utilizing the data block information list and the data block address list when the PDU is ready for transmission.