HSDPA scheduler and scheduling method employing MU MIMO technology

A scheduler and technology technology, applied in the directions of space transmit diversity, electrical components, diversity/multi-antenna systems, etc., can solve problems such as UE cannot be multiplexed

Inactive Publication Date: 2011-10-19
TD TECH COMM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a defect in the existing technology to allocate training sequence offsets to UEs only based on a special default training sequence offset allocation method: this method makes it impossible for UEs that do not support the special default training sequence offset allocation methods to reuse other HS-PDSCH resource of UE

Method used

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  • HSDPA scheduler and scheduling method employing MU MIMO technology
  • HSDPA scheduler and scheduling method employing MU MIMO technology
  • HSDPA scheduler and scheduling method employing MU MIMO technology

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Embodiment 1

[0158] This embodiment will propose the first HSDPA scheduler and scheduling method. The scheduler and scheduling method can not only implement HSDPA UE to multiplex and schedule HS-PDSCH resources in MU MIMO mode, but also realize HSDPA UE to multiplex any one of the above-mentioned channels of the first type and the third type in the form of MU MIMO. downlink resources. With the scheduler and scheduling method, the scheduling of each subframe is independent of each other. The scheduling scheme first determines the combination of channel types other than HS-PDSCH that can be multiplexed by the HSDPA UE, and then the HSDPA scheduler starts periodic scheduling. In any subsequent subframe, the HSDPA scheduler performs HSDPA scheduling once.

[0159] The scheduler can pre-configure the correspondence table of application scenarios and channel type combinations. In the correspondence table, each application scenario corresponds to a specific channel type combination. Of course, ...

Embodiment 2

[0227] In practical applications, there are the following scenarios:

[0228] Resource multiplexing is not used between HSDPA UEs, but HSDPA UEs are supported to multiplex resources included in any channel combination composed of the above-mentioned first type and third type downlink channels.

[0229] Since the resource multiplexing between HSDPA UEs is not supported, the scheduler and scheduling method in this scenario have nothing to do with the existing MU MIMO technology. At the same time, the scheduler and scheduling method in this scenario extend the application of the MU MIMO technology proposed by the present invention to scheduling other downlink resources besides HS-PDSCH into: HSDPA UE can multiplex resources of other downlink channels. Here, the downlink channel refers to the first type of downlink channel and the third type of downlink channel.

[0230] The scheduler and scheduling method in the above scenario are special cases of the scheduler and scheduling me...

Embodiment 3

[0273] Embodiment 3 is used to introduce an example when HSDPA UEs do not support multiplexing resources and only support HSDPA UEs to multiplex downlink idle resources. This example can be regarded as Embodiment 2 when multiplexed resource types only include idle downlink resources. variant embodiment. Therefore, this embodiment is essentially irrelevant to the existing MU MIMO technology.

[0274] The HSDPA scheduler starts periodic scheduling. In any subsequent subframe "n", the HSDPA scheduler performs HSDPA scheduling once.

[0275] In any subframe "n", the scheduling process of the HSDPA scheduler is as follows Image 6 shown, including the following steps:

[0276] Step 401: Determine the scheduling priority of each HSDPA UE in the "n"th subframe. All UEs are queued in descending order of scheduling priority. The UE at the top of the queue has the highest scheduling priority, and the UE at the bottom of the queue has the lowest scheduling priority.

[0277] Step 4...

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Abstract

The invention provides a high speed downlink packet access (HSDPA) scheduling method and a scheduler which employ a multi-user multiple-input-multiple-output (MU MIMO) technology. HSDPA UE can perform a multiplexing scheduling on any downlink resources except a HS-PDSCH resource based on a MU MIMO mode, which can effectively raise a downlink throughput and a downlink peak value rate of HSDPA. And a default training sequence offset distribution mode is supported. Therefore, UE which do not support the special default training sequence offset distribution mode can multiplex other UE resources.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a high-speed downlink packet (HSDPA) access technology, in particular to an HSDPA scheduler and a scheduling method using a multi-user multiple-input multiple-output (MU MIMO) technology. Background technique [0002] Currently, a multi-user (MU) multiple-input multiple-output (MIMO) technology has been introduced into High Speed ​​Downlink Packet Access (HSDPA). That is: in the downlink direction, multiple HSDPA user equipments (UEs) can share the same scheduled high-speed physical downlink shared channel (HS-PDSCH) resource. For these UEs sharing the same scheduled HS-PDSCH resource, different midamble shifts are allocated to these UEs based on a special default midamble shift (Midamble Shift) configuration. These different training sequence offsets are used to distinguish the radio channels of these UEs. [0003] Specifically, in HSDPA using MU MIMO technology, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12H04B7/04
Inventor 魏立梅赵渊沈东栋
Owner TD TECH COMM TECH LTD
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