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A method to transmit IP message by high speed downlink packet access technology of HSDPA

An IP packet and access technology technology, applied in the field of communication, can solve problems such as affecting service quality, increasing system complexity, and being unsuitable for IP network packet characteristics.

Active Publication Date: 2008-12-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0044] 1. The existing technology is not suitable for the packet characteristics of the IP network;
[0045] 2. Excessive RLC / MAC-d headers waste HS-DSCH channel bandwidth and reduce wireless channel utilization;
[0046] 3. Blank filling in the RLC / HS-DSCH PDU is prone to occur, further reducing the utilization rate of the wireless channel;
[0047] 4. When the wireless channel is not in good condition, it is easy to cause the delay of data transmission to increase
For real-time services, it will seriously affect the service quality;
[0048] 5. Increase the complexity of the system;
[0049] 6. Reduce the flexibility of business expansion

Method used

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  • A method to transmit IP message by high speed downlink packet access technology of HSDPA
  • A method to transmit IP message by high speed downlink packet access technology of HSDPA
  • A method to transmit IP message by high speed downlink packet access technology of HSDPA

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Embodiment Construction

[0164] The characteristics of IP packet data are flexible, not fixed in size, and irrelevant to business. According to the characteristics of IP packet data, the present invention proposes a mechanism suitable for transmitting IP packet data in the HSDPA channel. Segmentation or aggregation, and directly construct the RLC SDU with the header into the RLC PDU and map it to the MAC-d SDU of the MAC-d layer, and then construct the PDU by adding the MAC-d SDU with its own header through the MAC-d layer Afterwards, it is mapped to the MAC-hs layer; the MAC-hs layer fragments or aggregates SDUs according to the size of the PDU it is currently transmitting.

[0165] The first embodiment provided by the present invention, such as Figure 5 As shown, the PDCP, RLC, and MAC-d layers do not segment or aggregate their own SDUs, and this work is done at the MAC-hs layer. Because only the MAC-hs layer knows the length of the PDU that can be transmitted at present, reasonable segmentation ...

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Abstract

The related method for transferring IP message by HSDPA comprises: after entering UTRAN, packing the IP message and adding relative sub-head to construct MAC-d PDU and send to MAC-hs layer; according to current PDU size fit to transfer, partitioning or combining the MAC-d PDU to map into MAC-hs SDU, adding MAC-hs sub-head to transfer on HS- DSCH. This invention can improve bandwidth utility, reduces message transmission delay, and can increase system business expansion capacity.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for transmitting IP messages through the high-speed downlink packet access technology HSDPA. Background technique [0002] Starting from Release 5, 3GPP provides a high-speed downlink packet access mechanism (HSDPA), which is used to provide high-speed transmission of downlink packets on the air interface. It communicates with each other through the high-speed downlink shared transport channel (HS-DSCH), high-speed downlink physical shared transport channel (HS-PDSCH), high-speed downlink shared control channel (HS-SCCH) and HS-DSCH dedicated uplink physical control channel (HS-DPCCH). effect to achieve. [0003] In order to achieve high-speed downlink transmission, HSDPA adopts the following features: [0004] 1. Fast shared transmission channel scheduling. [0005] HS-DSCH transmission TTI as short as 2ms (that is, scheduled transmission once in 2ms, TTI of other transmiss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04W28/02H04W28/20
Inventor 庄宏成
Owner HUAWEI TECH CO LTD
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