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Method, system and equipment for determining reference subframe

A technology for referring to subframes and subframes, which is applied in the field of wireless communication and can solve problems such as increased power consumption of equipment and increased processing complexity of user equipment.

Active Publication Date: 2015-11-25
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The present invention provides a method, system and device for determining a reference subframe, which are used to solve the problem that the downlink measurement mechanism in the dynamic TDD system in the prior art will increase the processing complexity of the user equipment and cause the power consumption of the user equipment to increase

Method used

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  • Method, system and equipment for determining reference subframe
  • Method, system and equipment for determining reference subframe
  • Method, system and equipment for determining reference subframe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0174] like figure 2 As shown, a method for determining a reference subframe in Embodiment 1 of the present invention includes the following steps:

[0175] Step 200, the user equipment determines at least two sets of downlink CSI measurement subframes configured by the network side;

[0176] Step 201: For a downlink CSI measurement subframe set, the user equipment determines the downlink A-CSI reference subframe sequence number of the downlink CSI measurement subframe set according to preset rules, and according to the determined downlink A-CSI reference subframe number, The CSI reference subframe number determines the downlink A-CSI reference subframe.

[0177] Among them, the preset rules include some or all of the following rules:

[0178] According to the downlink A-CSI reference subframe configured by the network side device for the user equipment, determine the subframe sequence number corresponding to the subset of the downlink CSI measurement subframe set as the do...

example 1

[0211] based on Figure 1F Based on the example above, if the network side configures subframe #4 in subframe set 2 as its A-CSI reference subframe, the user equipment needs to measure or store the signal of subframe #4 in radio frame L-1 in advance to prepare for possible The A-CSI of set 2 fed back in subframe #2 of radio frame L triggered by the A-CSI trigger signaling received in subframe #5 in radio frame L−1.

[0212] When subframe #4 in radio frame L-1 is uplink, the user equipment saves the advance measurement results or stored signals in the previous cycle, that is, when subframe #4 in radio frame L-2 is downlink (if radio frame L In -2, subframe #4 is still uplink, then find the advance measurement result or stored signal) when subframe #4 is downlink) for A-CSI reporting of possible subsequent set 2.

[0213] In subframe set 1, after the A-CSI trigger signaling subframe (including this subframe), the user equipment can always find a valid A-CSI reference subframe t...

example 2

[0215] like Figure 4 As shown, when the uplink reference configuration is UL-DL configuration#2, the A-CSI trigger signaling may be sent in subframes {3,8}, and the division method of the subframe set is: set1 contains {0,1,5 ,6}, set2 contains {3,4,7,8,9}.

[0216] The network side configures subframe #5 in set1 as the A-CSI reference subframe of the subframe set, then the user equipment only needs to measure and store the signal of subframe #5 in advance, so as to prepare for the signal that may be generated in subframe #8 or # 3 The A-CSI of the subframe set 1 that is respectively fed back in the subsequent subframe #2 or subframe #7 triggered by the received A-CSI triggering signaling.

[0217] In subframe set 2, the A-CSI reference resource subframe #8 or #3 determined according to the original scheme is always a downlink subframe (the downlink subframe in the uplink reference configuration cannot be dynamically changed to uplink), so the subframe set In 2, the user eq...

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Abstract

A reference subframe determination method, system and device, which are used for solving the problem existing in the prior art that a downlink measurement mechanism in a dynamic TDD system will increase the processing complexity of a user equipment and cause the power consumption of the user equipment to be increased. The method in the embodiments of the present invention comprises: for one downlink CSI measurement subframe set, according to a preset rule, determining, by a user equipment, the serial number of a downlink A-CSI reference subframe of the downlink CSI measurement subframe set, and determining the downlink A-CSI reference subframe according to the determined serial number of the downlink A-CSI reference subframe, so that the user equipment can determine a downlink CSI measurement subframe set required to feed back an A-CSI in each A-CSI feedback subframe, and can find a corresponding A-CSI measurement reference subframe, thereby effectively reducing the processing complexity of the user equipment and reducing the power consumption of the user equipment.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, system and equipment for determining a reference subframe. Background technique [0002] The frame structure of the LTE (LongTermEvolution, long-term evolution) TDD system, such as Figure 1A As shown, a radio frame has a length of 10 ms and includes two types of special sub-frames and regular sub-frames, a total of 10 sub-frames, and each sub-frame is 1 ms. The special subframe is divided into 3 subframes: DwPTS (DownlinkPilotTimeSlot, downlink pilot subframe); GP is used for the guard interval between downlink and uplink); UpPTS (UplinkPilotTimeSlot, uplink pilot subframe). Regular subframes include uplink subframes and downlink subframes. [0003] In a TDD (Time division duplex, time division duplex) system, uplink and downlink transmission use the same frequency resource, and uplink / downlink signals are transmitted on different subframes. Wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W24/00H04W24/10
CPCH04W72/04H04L5/005H04L5/1469H04W72/0446Y02D30/70H04W72/53H04L5/0053H04W24/10
Inventor 潘学明沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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