Method and device for allocating and determining quasi-co-location

A configuration method and quasi-common technology, applied in the field of communication, can solve the problem of lack of cooperative UE large-scale feature parameter estimation and so on

Active Publication Date: 2016-04-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] The present invention provides a quasi-co-location configuration, determination method and device, to at least solve

Method used

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  • Method and device for allocating and determining quasi-co-location
  • Method and device for allocating and determining quasi-co-location
  • Method and device for allocating and determining quasi-co-location

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0180] In order to enable the terminal to fully utilize the CSI-RS to effectively estimate the large-scale characteristic parameters of the channel, a method of configuring a QCL-CSI-RS for each set of CSI-RS is provided in this preferred embodiment. Based on this method, the network side device configures a corresponding QCL-CSI-RS for each set of configured CSI-RS, and configures related information of the QCL-CSI-RS to the terminal.

[0181] When the network side device configures QCL-CSI-RS for CSI-RS, in a preferred embodiment, it can refer to the CSI-RS usage of surrounding cells to determine the resource location, subframe / time slot of QCL-CSI-RS location and period information. For example: Figure 4 It is a schematic diagram of performing QCL-CSI-RS configuration according to a preferred embodiment of the present invention. Such as Figure 4 As shown, the resource location corresponding to the CSI-RS of the target cell is The illustrated REs, the CSI-RS configura...

Embodiment approach

[0185] In another preferred implementation manner, when configuring the QCL-CSI-RS, the network side device may also determine the relative positional relationship of the QCL-CSI-RS according to the speed of the terminal or the estimation of the potential frequency offset range. For example: when the mobile speed of the terminal is high and / or it is believed that there is a large frequency offset in the current transmission and reception, then when configuring the QCL-CSI-RS on the network side device, it should try to configure the QCL-CSI-RS to be the same as the CSI-RS. on subframes or similar subframes; when the mobile speed of the terminal is relatively low and / or it is believed that there is a small frequency offset in the current transmission and reception, the network side device should try to set the QCL-CSI-RS when configuring the QCL-CSI-RS - The RS is configured on a subframe different from the CSI-RS or on a subframe farther away;

[0186] Wherein, when the networ...

Embodiment 2

[0197] In the method of the above-mentioned preferred embodiment 1, the relevant QCL-CSI-RS parameters are notified to the terminal through configuration, and of course some parameters can also be configured in a pre-agreed manner between the network side device and the terminal.

[0198] In this preferred embodiment, in a preferred implementation manner, the network-side device and / or terminal defaults that the reference signal sequences corresponding to each port of the QCL-CSI-RS and the reference signal sequences corresponding to each port of the CSI-RS are based on the same scrambling Code ID is generated. Based on this method, when configuring the QCL-CSI-RS parameters for the terminal, the signaling overhead for configuring the QCL-CSI-RS reference signal sequence scrambling code ID can be saved.

[0199] In another preferred embodiment, the network-side device and the terminal can support only one port of the QCL-CSI-RS by default, and the port 0 of the CSI-RS by defau...

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PUM

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Abstract

The invention discloses a method and a device for allocating and determining a quasi-co-location. The method comprises the steps of: acquiring all currently allocated CSI-RSs; allocating a corresponding QCL-CSI-RS for each set of CSI-RSs of all the CSI-RSs separately, wherein the QCL-CSI-RS is used for estimating a channel large scale feature parameter in conjunction with the CSI-RS; and allocating all the CSI-RSs and the QCL-CSI-RSs corresponding to various sets of CSI-RSs to a terminal. According to the method and the device provided by the invention, the CSI-RS can be prevented from suffering the influence of noise when being used for estimation of frequency deviation and frequency extension, and the CSI-RS can be directly used as a cell discovery signal.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for configuring and determining a quasi-co-location. Background technique [0002] With the popularization of devices such as smart mobile terminals in recent years, the throughput of the system has become increasingly demanding. In the case of increasingly tight spectrum resources, synchronously deploying a large number of small cells to obtain a large cell splitting gain is an effective way to improve system efficiency. In this context, the concept of UltraDenseNetwork (UDN for short) came into being. [0003] However, it will lead to mobility and interference problems. In order to solve the mobility and interference problems in UDN, an effective way is based on virtualized cells (also called cloud cells). (UE) is invisible, relative to UE, different cells are similar to distributed transmit antennas. When receiving a signal, the terminal only needs to ...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L25/02H04L27/26H04W48/16
CPCH04B7/26H04L1/00H04W72/04
Inventor 孙云锋郝鹏张淑娟
Owner ZTE CORP
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