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Method and apparatus for enhanced transport format combination selection in wireless communications

A transport format combination and enhanced technology, applied in the field of wireless communication, can solve the problems of not considering the number of RLCPDUs, low efficiency of MAC-e/esPDU, etc.

Active Publication Date: 2014-04-16
INTERDIGITAL PATENT HLDG INC
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  • Claims
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Problems solved by technology

It has been recognized that the current E-TFC selection algorithm for Release 7 or earlier would lead to inefficiency in generating MAC-e / es PDUs under the proposed improved Layer 2 uplink due to the fact that the current E-TFC The selection algorithm design does not take into account the flexible RLC PDU size based on the number of RLC PDUs in the enhanced MAC-esPDU, fragmentation of RLC PDUs, and flexible header format size for each logical channel

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  • Method and apparatus for enhanced transport format combination selection in wireless communications
  • Method and apparatus for enhanced transport format combination selection in wireless communications
  • Method and apparatus for enhanced transport format combination selection in wireless communications

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Embodiment

[0063] CLAIMS 1. A method for creating an Enhanced Medium Access Control (MAC-e) Packet Data Unit (PDU) as part of an Enhanced Transport Format Combination (E-TFC) selection.

[0064] 2. The method according to embodiment 1, further comprising determining whether bits or segments to be transmitted are included in the segment buffer;

[0065] 3. The method of embodiment 2, further comprising if the segment buffer contains a segment to be transmitted, the number of bits in the segment and corresponding header is less than the remaining available payload and the remaining authorized payload In case of minimum value in , add the segment and corresponding header to the Enhanced MAC-e PDU.

[0066] 4. The method of embodiment 3, further comprising subtracting the total number of bits added to the enhanced MAC-e PDU from the remaining grant payload and the remaining available payload.

[0067] 5. The method of embodiment 1, further comprising requesting a number of logical channels ...

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Abstract

Efficient enhanced transport format combination (E-TFC) selection methods and apparatus support flexible radio link control (RLC) packet data unit (PDU) size and medium access control (MAC) layer segmentation. Methods for filling an enhanced medium access control (MAC-e) packet data unit (PDU) with data from logical channels as part of E-TFC selection are provided. In one embodiment, the E-TFC selection algorithm employs a single request from the MAC layer to the RLC layer to request the number of bits it is allowed to send for a logical channel to create enhanced MAC-e PDUs. In another embodiment, the MAC entity performs multiple requests to the RLC entity. In another embodiment, the MAC entity makes a single request to the RLC entity to create one or more enhanced MAC-e PDUs of a set size. A technique is also provided for maintaining a guaranteed bit rate (GBR) for non-scheduled data flows with variable-length headers.

Description

technical field [0001] This application relates to wireless communications. Background technique [0002] A wireless communication system following Universal Mobile Telecommunications System (UMTS) technology has been developed as a third generation (3G) radio system and is maintained by the 3rd Generation Partnership Project (3GPP). A typical UMTS system architecture according to the current 3GPP specification is depicted in Fig. 1 . The UMTS network architecture includes a Core Network (CN) interconnected with the UMTS Terrestrial Radio Access Network (UTRAN) via the Iu interface. The UTRAN is configured to provide wireless telecommunication services to users via a Uu radio interface using a Wireless Transmit / Receive Unit (WTRU), referred to as User Equipment (UE) in 3GPP standards. A commonly adopted air interface defined in the UMTS standard is Wideband Code Division Multiple Access (W-CDMA). The UTRAN has one or more Radio Network Controllers (RNCs) and base stations...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L47/36
CPCH04W72/1263H04L29/02H04W28/065Y02E60/13H04B7/2612H04L65/00H04L47/365H04L69/22H04W28/0268
Inventor D·帕尼P·马里内尔S·E·泰利C·R·凯夫
Owner INTERDIGITAL PATENT HLDG INC
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