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HSDPA multi-stream data equalization method and system for distributing between base stations

A technology between base stations and base stations, applied in the field of communication, can solve the problems of unbalanced data transmission, load and delay, etc., and achieve the effect of improving performance

Inactive Publication Date: 2019-11-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a data equalization method, system, base station and wireless network controller for HSDPA multi-stream shunting between base stations, so as to at least solve the problem in the related art that the load and time delay of each base station participating in shunting are not the same, resulting in large The RLC data with a serial number arrives at the UE earlier than the one with a lower serial number, causing the "SKEW" phenomenon, which leads to the problem of unbalanced data transmission

Method used

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  • HSDPA multi-stream data equalization method and system for distributing between base stations

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Experimental program
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Embodiment 1

[0074] This preferred embodiment provides a data equalization method based on HSDPA multi-stream technology, in which the base station is a NodeB, and the radio network controller is a Radio Network Controller (RNC for short). The procedure of this method is as follows Figure 7 As shown, steps S702 to S710 are included.

[0075] Step S702, RNC sends HS-DSCH data frame to each NodeB.

[0076] During implementation, the HS-DSCH data frame carries RLC PDUs, and the RLC PDUs include RLC data PDUs and RLC control PDUs. Further, the HS-DSCH data frame may also carry the RLC data PDU sequence number. Preferably, the HS-DSCH data frame can also be set as HS-DSCH type 1 data frame or HS-DSCH type 2 data frame; the RLC mode is AM mode.

[0077] Step S704, each NodeB sends a status feedback to the RNC.

[0078] Status feedback includes that each NodeB feeds back the largest RLC data PDU sequence number that has been sent and confirmed by HARQ to the RNC by parsing the RLC data PDU s...

Embodiment 2

[0086] The embodiment of the present invention proposes a data equalization method based on the HSDPA multi-stream technology. During implementation, the UE is in the HSDPA multi-flow state, and the RNC notifies the NodeBs of the imbalance between the NodeBs according to the status feedback of the NodeBs.

[0087] The RNC sends the HS-DSCH data frame to each NodeB, and the data frame is any one of the HS-DSCH type 1 data frame and the HS-DSCH type 2 data frame.

[0088] The RNC carries the RLC data PDU sequence number in the HS-DSCH type 1 data frame, such as Figure 8 As shown, whether the RLC control PDU is indicated by the reserved bit, the reserved bit is 0 means that it is followed by the RLC control PDU, and the reserved bit is 1 means that it is followed by the starting sequence number of the RLC data PDU; and, the starting sequence number of the RLC data PDU After the end, use the reserved bit to judge whether it is a continuous RLC data PDU. A reserved bit of 0 means...

example 1

[0097] Such as Figure 14 As shown, it is a flow chart of the data equalization method proposed by the present invention, and the process includes step S1402 to step S1420.

[0098] Step S1402, when the UE is in the multi-flow state of each NodeB, the RNC receives the user data of the UE, RLC division and numbering, and divides the flow to each NodeB according to a certain algorithm.

[0099] In step S1404, the NodeB feeds back the maximum RLC sequence number confirmed by the HARQ to the RNC, and the RNC judges whether the imbalance between the NodeBs reaches a predetermined threshold. If yes, execute step S1406, otherwise execute step S1420.

[0100] In step S1406, the RNC notifies the NodeBs of the degree of imbalance among the NodeBs.

[0101] In step S1408, the NodeB judges whether to speed up data transmission. If yes, execute step S1410, otherwise execute step S1418.

[0102] Step S1410, the NodeB judges whether there are available resources. If yes, execute step S1...

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Abstract

The present invention discloses a data equalization method, system, base station and wireless network controller for HSDPA multi-stream shunting between base stations, wherein the method includes: the base station receives state feedback from the wireless network controller of the base stations participating in the shunting between base stations information; the base station adjusts the data transmission capability of the base station according to the state feedback information. By using the present invention, it is solved that based on the related technology, due to the different loads and time delays of the base stations participating in the offloading, the RLC data with a large sequence number arrives at the UE before the RLC data with a small sequence number, causing the "SKEW" phenomenon, resulting in inconsistent data transmission. For the problem of balance, the base station can be adjusted according to the current state of each base station, which improves the performance of the system.

Description

technical field [0001] The present invention relates to the field of communication, in particular to a data equalization method, system, base station and wireless network controller for high speed downlink packet access (High Speed ​​Downlink Packet Access, referred to as HSDPA) multi-stream splitting between base stations. Background technique [0002] With the continuous and rapid development of data services, High Speed ​​Packet Access (HSPA for short) technology is becoming more and more common, and it is developing towards the direction of multi-antenna and multi-carrier. For example, the R7 version of the 3rd Generation Partnership Project (referred to as 3GPP) introduces the Multiple Input Multiple Output (Multiple Input Multiple Output, referred to as MIMO) technology, so that the base station (for example, NodeB) can The antenna sends two transport blocks to the user equipment (UE for short) from the same cell at the same time; subsequently, the R8 version of 3GPP i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/08
CPCH04W28/0861
Inventor 潘凤艳张瑜
Owner ZTE CORP
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