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Method and device for resource notification and signaling demodulation

A signaling and notification technology, applied in signaling allocation, wireless communication, transmission path sub-channel allocation, etc., can solve the problem of not knowing the positions of non-zero-power CSI-RS patterns and zero-power CSI-RS patterns, affecting control signals Demodulation performance, waste of resources and other issues

Active Publication Date: 2013-09-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] When sending control signaling, if the CSI-RS pattern is not considered and only the resources of the PDSCH are used, resources will be wasted
[0011] If the control signaling is sent using an unoccupied CSI-RS pattern, since the UE does not know the positions of the non-zero-power CSI-RS patterns and zero-power CSI-RS patterns of other UEs from the perspective of a UE, this leads to The UE cannot determine which REs its own control signaling is mapped on, thus affecting the demodulation performance of the control signaling
A way to avoid this problem is that the base station always overlaps the positions of non-zero-power CSI-RS patterns and zero-power CSI-RS UE patterns of all UEs, but this will reduce the flexibility of the system

Method used

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  • Method and device for resource notification and signaling demodulation
  • Method and device for resource notification and signaling demodulation
  • Method and device for resource notification and signaling demodulation

Examples

Experimental program
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Effect test

Embodiment 1

[0075] According to the above method 1, a 32-bit bitmap is used to indicate whether to transmit control signaling on REs of a certain CSI-RS pattern.

[0076] Figure 1a with Figure 2a There are 32 types of 2-port CSI-RS patterns in total, and a 32-bit bitmap can be used to indicate whether control signaling is transmitted on REs of each CSI-RS pattern. A certain bit is 1 (or 0), which means that the RE of the CSI-RS pattern corresponding to the bit is used for transmitting (or not transmitting) control signaling.

[0077] Step 1: The base station determines that the CSI-RS patterns of the 2 ports corresponding to configurations 0, 1, and 12 in Table 1 are not used for transmission of control signaling, and the CSI-RS patterns of other 2 ports are used for transmission of control signaling, such as Figure 5a shown;

[0078] Step 2: The base station sends high-level signaling to the UE, and the 32-bit bitmap is as follows:

[0079] {1,1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0...

Embodiment 2

[0083] According to the above method 2, in combination with the zero-power CSI-RS pattern indication signaling indicates whether to transmit control signaling on REs of a certain CSI-RS pattern.

[0084] Step 1: The base station determines that the upper 2 REs (REs marked with 0 and 1) of the 4-port CSI-RS pattern corresponding to configuration 0 in Table 1 do not transmit control signaling, and the lower 2 REs (marked 2 and 3) do not transmit control signaling. RE) transmission control signaling; the upper 2 REs (REs marked with 0 and 1) of the 4-port CSI-RS pattern corresponding to configuration 1 in Table 1 transmit control signaling, and the lower 2 REs (marked 2, 3 The RE) does not transmit control signaling; the 4 REs corresponding to the 4-port CSI-RS pattern configured with 6 in Table 1 do not transmit control signaling; the REs of the other 4-port CSI-RS patterns in Table 1 transmit control signaling order; such as Figure 5b shown;

[0085] Step 2: The base station...

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Abstract

Embodiments of the invention disclose a method and device for resource notification and signaling demodulation so as to provide a control signaling demodulation scheme that can guarantee resources to be effectively utilized and a channel state information reference signal (CSI-RS) is flexibly configured, and relates to the field of wireless communication technology. A base station notifies information that whether resource elements RE corresponding to various configured CSI-RS patterns are used for transmitting a control signaling to a terminal; and the terminal, based on the notification, determines the RE which is used for transmitting the control signaling and demodulates the control signaling on the determined RE. With the method, resources can be guaranteed to be effectively utilized and the CSI-RS is flexibly configured.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a resource notification and signaling demodulation method and device. Background technique [0002] Figure 1a ~ Figure 1c It is a schematic diagram of a channel state information measurement reference signal (CSI-RS) resource configuration in a release 10 (Rel-10) long-term evolution (LTE) system, and the configuration is applicable to subframe formats 1 and 2. in, Figure 1a It is a multiplexing method under 2 ports, and each CSI-RS pattern used to carry CSI-RS includes 2 resource elements (REs) respectively marked as 0 and 1, and there are 20 CSI-RS patterns in total; Figure 1b It is a multiplexing method under 4 ports. Each CSI-RS pattern includes 4 REs marked as 0, 1, 2, and 3 respectively, and there are 10 CSI-RS patterns in total; Figure 1c It is a multiplexing mode under 8 ports, and each CSI-RS pattern includes 8 REs respectively marked as 0, 1, 2, 3, 4,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W68/00H04W72/04
CPCH04L5/0057H04W72/23
Inventor 拉盖施潘学明赵锐
Owner DATANG MOBILE COMM EQUIP CO LTD