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Method and apparatus for spatial division multiple access of downlink control channel of super cell, and base station

A space-division multiple access and control channel technology, applied in wireless communication, electrical components, etc., can solve problems such as limited control channel capacity, and achieve the effects of improving utilization, expanding capacity, and improving system capacity

Active Publication Date: 2017-11-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a downlink control channel space division multiple access method, device and base station of a super cell, to solve the technical problem that the capacity of the control channel is limited when the number of users in the super cell is large

Method used

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  • Method and apparatus for spatial division multiple access of downlink control channel of super cell, and base station
  • Method and apparatus for spatial division multiple access of downlink control channel of super cell, and base station
  • Method and apparatus for spatial division multiple access of downlink control channel of super cell, and base station

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Embodiment 1

[0051] Such as figure 2 As shown, the downlink control channel space division multiple access method of the super cell provided by the embodiment of the present invention is applied to the base station and includes the following steps:

[0052] S10. Obtain an active cell set of each UE in the super cell.

[0053] Preferably, the base station can obtain the uplink received power of each UE in each CP in the super cell through the uplink channel characteristic information of each UE; maintain the cell active set of each UE according to the uplink received power. Specifically, the uplink receiving power of each UE in each CP may be sorted, and then the active set is determined according to a certain rule, for example, the uplink receiving power is greater than a preset power threshold.

[0054] S20. Select a primary SDMA scheduling UE and at least one SDMA secondary scheduling UE from unscheduled UEs according to a preset rule.

[0055] Specifically, the main rule for scheduli...

Embodiment 3

[0092] Such as Figure 5 As shown, a super cell downlink control channel space division multiple access device provided by an embodiment of the present invention includes an active set acquisition module 10, a scheduling UE selection module 20, a C-RNTI selection module 30, and a C-RNTI update module 40 and mapping module 50.

[0093] The active set acquisition module 10 is configured to acquire the cell active set of each UE in the super cell.

[0094] Such as Image 6 As shown, the cell active set acquisition module 10 further includes a power acquisition unit 101 and an active set maintenance unit 102, wherein:

[0095] The power obtaining unit 101 is configured to obtain the uplink receiving power of each UE in each conventional cell in the super cell through the uplink channel characteristic information of each UE.

[0096] The active set maintenance unit 102 maintains the active set of cells of each UE according to the uplink received power.

[0097] The scheduling UE ...

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Abstract

The invention discloses a method and apparatus for spatial division multiple access of a downlink control channel of a super cell, and a base station. The method comprises the following steps: acquiring a cell activation set of each UE in the super cell; according to a preset rule, selecting one spatial division multiple access for access to master scheduling UE and at least one piece of slave scheduling UE from unscheduled UE; according to information of the master scheduling UE, calculating a starting position of a control channel element (CCE) occupied by downlink control information (DCI) of the master scheduling UE, and calculating a value of a cell radio network temporary identifier (C-RNTI) of the slave scheduling UE matching the maser scheduling UE; redistributing the C-RNTI of the slave scheduling UE through a radio resource control (RRC) protocol so as to enable the slave scheduling UE and the master scheduling UE to complete spatial division multiplexing; and mapping DCI resource of the master scheduling UE and the slave scheduling UE to the same time-frequency resource through time division multiplexing. According to the invention, the utilization rate of the time-frequency resource can be improved, the capacity of the downlink control channel is enhanced, and the system capacity is improved.

Description

technical field [0001] The present invention relates to the field of mobile communication technologies, in particular to a SDMA (Spatial Division Multiple Access, control channel Spatial Division Multiple Access) method, device and base station of a super cell in an LTE (Long Term Evolutio, long-term evolution) system. Background technique [0002] The LTE system is the evolution of the 3G (the third generation, third generation) mobile communication system. It uses OFDM (Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple Output) Based on the core technology, it provides users with higher data transmission rate, lower transmission delay and better service quality. Therefore, the LTE system is being extensively studied and gradually applied to commercial networks. [0003] Such as figure 1 As shown, a super cell (Supper-Cell) is composed of multiple adjacent CPs (Cell-Portions, regular cells), and each CP shares the resources of the super cell, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/0446H04W72/0453H04W72/23H04W72/535Y02D30/70
Inventor 秦洪峰韩亚洁陈琼
Owner ZTE CORP
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