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System and method for implementation of control channel resource allocation

A technology for controlling channel resources and control channels, which is applied in the field of realizing control channel resource allocation, and can solve problems such as waste of transmission resources

Inactive Publication Date: 2013-01-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for an ABS that does not schedule R8 / 9 / 10 UEs, if the control channel is mapped from the OFDM symbol after the PDCCH, the PDCCH of these ABSs that do not schedule R8 / 9 / 10 UEs does not transmit user information , so most of the transmission resources are wasted

Method used

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  • System and method for implementation of control channel resource allocation
  • System and method for implementation of control channel resource allocation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Such as image 3 As shown, the R8 / R9 / R10 UEs are not scheduled in the ABS configured in the embodiment of the present invention, and RRC signaling is used to indicate whether the UE performs blind detection from the first OFDM symbol.

[0057] In this case, the process of E-PDCCH resource configuration and user detection is as follows:

[0058] The MeNB sends ABS configuration information to the UE of R11. The ABS configuration method can be a 40-bit bitmap, where each bit corresponds to a subframe, and 40 bits correspond to 40 subframes in total, such as image 3 As shown, 1 can be used to represent ABS and 0 can be used to represent non-ABS, that is, the bitmap of ABS in the figure can be configured as:

[0059] [0 0 0 0 1 1 0 0 0 1 0 0 0 1 1 0 0 0 0 1 0 0 0 0 1 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1].

[0060] This kind of bitmap can be several pre-configured patterns, each pattern is represented by an index number, and the method of notifying the index number can be used ...

Embodiment 2

[0069] Different from Embodiment 1, in this embodiment, the number of symbols occupied by the PDCCH indicated by the CFI is configured as 0 to indicate whether the mapping of the E-PDCCH starts from the first OFDM symbol of the current subframe. Such as Figure 4 As shown, in the embodiment of the present invention, the position of the start symbol of the E-PDCCH and the corresponding PDSCH is indicated by the PCFICH. The CFI indication shown in Table 1 is configured in the existing 3GPP protocol 36.212:

[0070] Table 1. The number of PDCCH symbols indicated by CFI and their codeword correspondence

[0071]

[0072] The all-zero sequence codeword with CFI configured as 4 reserved in Table 1 can be used to indicate that the current E-PDCCH is mapped from the first OFDM symbol of the current subframe, that is, the number of OFDM symbols occupied by the PDCCH is 0.

[0073] In this case, the process of E-PDCCH resource configuration and user detection is as follows:

[0074]...

Embodiment 3

[0081] What is different from Embodiment 2 is that in this embodiment, CFI is not used to indicate whether to map E-PDCCH from the first OFDM symbol of the current ABS subframe, but RRC signaling is used to inform UE which subframes are in the form of ABS bitmap. Frame time ABS. Different from Embodiment 1, in this embodiment, in subframes 0, 4, 5, and 9, the E-PDCCH is not mapped from the OFDM symbol after the PDCCH, but always starts from the first OFDM symbol. Such as Figure 5 As shown, in the embodiment of the present invention, the MeNB does not schedule R8 / 9 / 10 UEs in the ABS. In ABS, the E-PDCCH and PDSCH of R11 UEs are always mapped from the first OFDM symbol. At this time, it is necessary to notify the R11 UE of the ABS configuration through RRC signaling, so that the UE can know the subframe mapped from the first symbol.

[0082] In this case, the process of E-PDCCH resource configuration and user detection is as follows:

[0083] Step 501: judging that the curr...

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Abstract

The invention discloses a system and a method for implementation of control channel resource allocation. A pre-coded control channel can be mapped from a first OFDM (orthogonal frequency division multiplexing) code of an ABS (almost blank subframe) when no scheduling R8 / R9 / R10 UE (user equipment) is in the ABS. The control channel resource allocation technology implemented by the system and the method can be applied to control channel resource allocation and indication optimization of LTER10 subsequent versions. Resource utilization efficiency is improved and control channel covering power is improved by making full use of the UE bearing no information in the ABS, and UE energy conservation and reduction of control channel blind test complexity for the UE are both benefited.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and system for realizing control channel resource configuration. Background technique [0002] In order to increase the capacity of the cellular network, a low power node (Low Power Node, LPN) is introduced under the coverage of a macro cell (Macro cell) to form some micro cells. Throughput of the network system is increased by enabling user equipment (User Equipment, UE) within the scope of the macro cell to access these micro cells. When these micro cells are assigned independent cell IDs, these micro cells are equivalent to an independent cell. In order to allow as many users as possible to access the micro cell, thereby reducing the load of the macro cell and realizing the reuse of time-frequency resources, usually when the UE performs handover between the macro cell and the LPN cell, the received signal power of the LPN cell In addition, an offset relative to the...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12H04L1/00
CPCY02D30/70
Inventor 郑勇孙云锋郭森宝任敏弓宇宏
Owner ZTE CORP
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