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Method and system for realizing multi-user multiple input multiple output (MU-MIMO) of enhanced physical uplink channel (E-PUCH) on high speed packet access (HSPA) carrier

A high-speed packet access, carrier technology, applied in diversity/multi-antenna systems, space transmit diversity, electrical components, etc., can solve problems such as inability to apply MU-MIMO, and achieve the effect of improving HSUPA throughput

Inactive Publication Date: 2014-06-25
TD TECH COMM TECH LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, if you want to apply this space division multiplexing method, you need to upgrade the terminal to the protocol version of the R8 protocol and above. For the current large number of terminals that only support the R7 protocol, the MU-MIMO technology cannot be applied

Method used

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  • Method and system for realizing multi-user multiple input multiple output (MU-MIMO) of enhanced physical uplink channel (E-PUCH) on high speed packet access (HSPA) carrier
  • Method and system for realizing multi-user multiple input multiple output (MU-MIMO) of enhanced physical uplink channel (E-PUCH) on high speed packet access (HSPA) carrier
  • Method and system for realizing multi-user multiple input multiple output (MU-MIMO) of enhanced physical uplink channel (E-PUCH) on high speed packet access (HSPA) carrier

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Embodiment Construction

[0036] The solution of the embodiment of the present invention is to realize MU-MIMO of E-PUCH under the framework of the R7 protocol. The solution involves a Radio Network Controller (RNC) and a Base Station (NodeB).

[0037] The operation flow of the RNC side in the embodiment of the present invention is as follows figure 1 shown, including the following steps:

[0038] Step 101: When establishing a radio access bearer (RAB) for the UE, the RNC determines that the uplink service of the UE is an HSUPA service, specifies the HSPA carrier for the UE to perform the HSUPA service, and determines that the E-PUCH training sequence allocation mode of the UE is Specific mode, and specify to use 1 of M training sequence offsets.

[0039] In order to ensure the space division probability, when specifying the training sequence offset, the number of HSUPA user equipment using each training sequence offset on the HSPA carrier should be balanced as much as possible. Among them, M is the...

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Abstract

The invention provides a method for realizing multi-user multiple input multiple output (MU-MIMO) of an enhanced physical uplink channel (E-PUCH) on a high speed packet access (HSPA) carrier. The method comprises the following steps that: a radio network controller (RNC) informs a node B and user equipment (UE) of the specified midamble distribution mode and the used midamble shift; a physical layer of the node B acquires uplink channel estimation of the UE to each antenna through an uplink associated dedicated physical channel (DPCH) of the UE on the HSPA carrier, calculates a beamforming vector according to the channel estimation by an eigenvector method and feeds the calculated beamforming vector back to a high speed uplink packet access (HSUPA) scheduler of the node B; when performing HSUPA scheduling, the scheduler of the node B schedules the UE with the highest priority in an E-PUCH resource pool of the carrier according to the conventional scheduling algorithm; and the scheduler of the node B selects UE from the unscheduled UE and schedules the selected UE, wherein the normalization related values of eigenvalue-based beamforming (EBB) vectors of the selected UE and the scheduled UE are smaller than a preset threshold value and the selected UE and the scheduled UE use different midamble shift.

Description

technical field [0001] The present invention relates to High Speed ​​Packet Access (HSPA) technology, in particular to a method and system for implementing Enhanced Uplink Physical Channel (E-PUCH) multi-user equipment-Multiple Input Multiple Output (MU-MIMO) on a High Speed ​​Packet Access carrier. Background technique [0002] The HSPA carrier (R7) of the Time Division Synchronous Code Division Multiplexing (TD-SCDMA) system supports the High Speed ​​Uplink Packet Access (HSUPA) service. This service mainly uses the Enhanced Uplink Absolute Access Grant Channel (E-AGCH), the Enhanced Uplink HARQ Response Indicator Channel (E-HICH) physical channel as the control channel, and the E-PUCH channel as the uplink traffic channel. [0003] Under the condition that the time slot and code channel resources occupied by the E-PUCH channel remain unchanged, in order to increase the throughput of the system uplink service, it is an effective way to use MU-MIMO technology to space-divis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04B7/04
Inventor 江森徐绍君
Owner TD TECH COMM TECH LTD
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