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Data processing method of MAC layer and base station employing the method and user terminal

A processing method and user terminal technology, applied in the field of base stations and user terminals, can solve the problems of system complexity, long delay, long data delay, etc., and achieve the effects of reducing complexity, improving efficiency, and reducing steps

Inactive Publication Date: 2007-07-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, there are many different types of transmission channels in the MAC layer, which are used to process different types of services. Due to the various types of transmission channels and the switching between channels, the processing of data brings a long delay.
In addition, different entities are configured for different transmission channels in the MAC layer, so so many entities bring complexity to the system, and these entities are distributed in different network nodes, such as NodeB (base station) and RNC (wireless Network controllers), the data interaction between them will be carried out through the Iub interface, which will inevitably bring a long delay

Method used

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  • Data processing method of MAC layer and base station employing the method and user terminal
  • Data processing method of MAC layer and base station employing the method and user terminal
  • Data processing method of MAC layer and base station employing the method and user terminal

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Embodiment 1

[0065] In this embodiment, there is only one E-MAC entity in the NodeB or UE, and the E-MAC entity includes: an E-MAC sending unit, used to process sent data; an E-MAC receiving unit, used to process received The data.

[0066] 1. Figure 3 shows the downlink service processing flow of the MAC layer on the UTRAN plane. Here, the MAC layer may include an E-MAC sending unit, and the E-MAC sending unit is located in the NodeB. When the NodeB receives the data flow sent to its UE, it will process the received data flow at the MAC layer, and then send it to the UE through the downlink. The following describes the MAC layer downlink of the UTRAN plane with reference to Figure 3 road business process.

[0067] Step 31. First, multiplex data streams with the same QoS attribute.

[0068] Step 32, then perform QoS-based scheduling on data streams among one user or multiple users.

[0069] Step 33. Number the scheduled data streams, and perform segmentation and concatenation. Here, the...

Embodiment 2

[0108] For the transmitting end in the first embodiment, the ARQ functional module and the division and concatenation functional module are interchanged, and the corresponding reassembly and ARQ at the receiving end are interchanged. In this way, what ARQ caches and retransmits will be the entire SDU (service data unit) from the upper layer, and for the same segment in an SDU, there will be no splitting and cascading again. Thus, the complexity of segmentation is simplified, and less data header information is maintained.

Embodiment 3

[0110] For the downlink UTRAN plane in the first embodiment, the ARQ is canceled in the MAC layer, and the ARQ is implemented in the upper layer network equipment of NodeB, such as GW (core network gateway). Then the downlink UE side also puts the recombination to the upper layers accordingly. Correspondingly, on the uplink UE plane, the MAC layer cancels the ARQ and puts the ARQ on the upper layer, and the uplink UTRAN plane correspondingly puts the recombination in the position corresponding to the UE plane.

[0111] Since the original base station will delete the data in the cache during hard handover between base stations, users are prone to data loss. If ARQ is implemented on upper-layer equipment, it is conducive to UE mobility management, and at the same time, the lost data can also be used. ARQ retransmission ensures lossless transmission of data.

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Abstract

This invention discloses an MAC layer sending processing method, including: process the sending data with QoS-based multiplexing, cascading segmentation, ARQ, generating transmission block, HARQ, and other processes. The invention also discloses an MAC layer receiving processing method, including: process the receiving data with HARQ, transmission block queue distribution, decomposition, retransmission, demultiplexing, and other processes. The invention also discloses the base station and UE using the above MAC layer processing method. According to the invention, through the transmission channel types, it can use less MAC layer entities to handle transmission channel, thereby reducing the complexity of MAC layer processing, and improving the MAC layer efficiency on the business processes, thereby enhancing the system efficiency. In addition, since the MAC layer processing entities of the invention are few, making data processing steps reduced through the MAC layer, thereby reducing the data processing delay.

Description

technical field [0001] The present invention relates to a communication technology, in particular to a data processing method of a MAC layer and a base station and a user terminal adopting the method. Background technique [0002] UMTS (Universal System for Mobile Communications) adopts WCDMA (Wideband Code Division Multiple Access) wireless transmission technology on the air interface, and is divided into three protocol layers in R6: L1, L2, and L3, corresponding to OSI (Open Interconnection System ) reference model of the physical layer, data link layer and network layer, where L2 is divided into MAC (media access control), RLC (radio link control), PDCP (packet data convergence protocol) and BMC (broadcast and multi playback control). [0003] MAC is located above the physical layer of the UTRAN (UMTS Terrestrial Radio Access Network) air interface and is a sublayer of the data link layer (L2). It shields the characteristics of the physical transmission medium and provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/00H04L1/18
Inventor 邵飞
Owner HUAWEI TECH CO LTD
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