Transmitting and receiving method for high speed medium cut-in control grouping data unit

A technology of media access control and packet data unit, applied in electrical components, digital transmission systems, communication between multiple stations, etc., can solve problems affecting data rate, unable to guarantee continuous downlink data transmission, HS-DSCH transmission rate Fading and other issues

Inactive Publication Date: 2006-11-08
HUAWEI TECH CO LTD
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Problems solved by technology

[0010] use figure 2 The method for sending downlink data through HS-DSCH has a disadvantage: when the MAC-hs PDU is smaller than the length of a MAC-d PDU to be sent, the Node B cannot carry a MAC-d PDU to be sent on the MAC -hs PDU, so that it cannot guarantee that Node B will continuously send downlink data to UE through HS-DSCH
For example: when the UE is at the edge of Node B, the CQI value detected by the UE will be relatively small, so the MAC-hs PDU length obtained according to the CQI value of the UE and the maximum transmit power that can be allocated to the UE is also relatively small Small, even smaller than the length of a MAC-d PDU to be sent, at this time there will be a problem that Node B cannot send downlink data through HS-DSCH, which will affect the rate of HS-DSCH transmission of downlink data, thus speeding up the transmission rate of HS-DSCH. Fading of bearer transmission rate

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  • Transmitting and receiving method for high speed medium cut-in control grouping data unit
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  • Transmitting and receiving method for high speed medium cut-in control grouping data unit

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail by giving specific embodiments and referring to the accompanying drawings.

[0049] When transmitting downlink data, in order to ensure the accuracy of downlink data transmission, the prior art adopts a radio link control layer acknowledgment (RLC AM) mode. In RLC AM mode, each MAC-d PDU needs to contain a dedicated channel medium access control header (MAC-d header) of at least 16 bits. If the length of the set MAC-d PDU is relatively small, the MAC The overhead ratio of -d header is relatively large, and the efficiency of downlink data transmission is relatively low. Therefore, the length of the existing MAC-d PDU is set as required and should not be too small. Therefore, in places where HS-DSCH coverage is relatively weak, such as the edge of NodeB, the MAC-hs PDU carried by HS-DSCH may not be able to carry a M...

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Abstract

This invention discloses a transmission and receiving method for MAC-hs PDU of a high speed media access control packet data unit, in which, the method includes: A, when the MAC-d PDU length for loading of the MAC-hs PDUprovided to the UE by Node B is shorter than that of the MAC-d PDU of the special channel media access control packet data unit being sent to the UE, Node B segments the MAC-d PDU based on the length of the MAC-hs PDU, B, Node B loads one or more than one segments of MAC-d PDU on one or more than one MAC-hs PDU to send them to the UE via the high speed down share channel HS-DSCH, in which, when the length of the MAC-hs PDC is smaller than that of the MAC-d PDU to be sent, the MAC-d PDU can be loaded on the MAC-hs PDU and transmitted to the UE via HS-DSCH.

Description

technical field [0001] The present invention relates to the technology of transmitting data on the high-speed downlink shared channel (HS-DSCH) in the wideband code division multiple access (WCDMA) system, particularly relates to a kind of high-speed media access control packet data unit (MAC-DSCH) transmission through HS-DSCH hs PDU) sending and receiving method. Background technique [0002] At present, the high-speed downlink packet access (HSDPA) technology is introduced in the version (Realse) specification of the WCDMA system. This technology provides the user equipment (UE) with the service of high-speed transmission of downlink data. The transmission rate of downlink data transmission can theoretically be Up to 12.779 megabits per second (Mbps). HS-DSCH is a downlink shared channel established by HSDPA technology. The transmission time interval (TTI) of HS-DSCH is fixed at 2 milliseconds (ms). In one TTI, when the cell base station (Node B) sends downlink data to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04L1/00
Inventor 王晓霞
Owner HUAWEI TECH CO LTD
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