A method for indicating cell radio resource status

A technology of wireless resources and cells, applied in wireless communication, digital transmission systems, electrical components, etc., can solve the problems of inaccurate and insignificant measurement, and achieve the effect of convenient and correct measurement

Inactive Publication Date: 2019-06-21
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: if the CSI, RSRP / RSRQ measured by the UE in the last subframe, the triggered event reporting may not be meaningful, because the UE will not use this cell to transmit data in the next period of time, and how long it will wait is unknown; For another example, if the UE does not know which symbols are CRS / CSI-RS with LAA transmitted, it may lead to inaccurate measurement

Method used

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  • A method for indicating cell radio resource status
  • A method for indicating cell radio resource status

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Taking LAA as an example, a field is added to the existing DCI or newly defined DCI to indicate 5-bit information. The DCI is transmitted on the Pcell, and the subframe in which the DCI is received is the current subframe of the LAA.

[0022] In the 5-bit information, 1 bit indicates whether the subsequent subframe of the current subframe is the last subframe, and the remaining 4 bits indicate the number of remaining subframes or symbols except the current subframe. In this case, the UE can start accurate measurement from the subsequent subframe of the current subframe. Please refer to the table below for the specific setting of 5bit.

[0023]

Embodiment 2

[0026] A new physical channel is defined to carry 6-bit information, and the newly defined physical channel is fixed at the last symbol of each subframe, and is transmitted at a fixed position in the frequency domain. No transmission if the last symbol of the first subframe is incomplete. In order to ensure reliable transmission of the 6-bit data, downlink control channel processing methods, such as low-order modulation and low coding rate, can be used.

[0027] Among these 6 bits, the high 2 bits or low 2 bits are used to represent the current subframe state (that is, whether it is a complete subframe) and the type of its subsequent subframe (that is, whether it is the last subframe); the remaining 4 bits are the same as in Embodiment 1, indicating that except for the current How long the LAA transmission can be performed outside the subframe.

[0028] The specific definition of 6 bits is shown in the table below.

[0029]

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PUM

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Abstract

The invention provides a method for indicating a radio resource status of a cell. The method comprises the following step: indicating information about the radio resource status of the cell to UE (User Equipment) by using a specific field on a network side, wherein in the specific field, 1 bit is used for indicating whether a subsequent sub-frame of a current sub-frame is a last sub-frame or not, and 4 bits are used for indicating the number of remaining sub-frames and / or symbols except the current sub-frame. Through adoption of the method, the numbers of remaining frames and symbols to be transmitted in an LAA (License Assisted Access) cell can be indicated to the UE, so that the UE can perform correct measurement conveniently, and is assisted in performing data demodulation and deciding whether to report a measurement result or not.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for indicating the state of wireless resources of a cell. Background technique [0002] With the development of wireless mobile communication technology, people put forward higher and higher requirements for high speed, low delay and low cost. The LTE (Long Term Evolution) project was born under such a background, pursuing higher peak rates and shorter transmission delays. [0003] The main performance goals of the LTE project include: providing a peak rate of 100 Mbps downlink and 50 Mbps uplink in a 20MHz spectrum bandwidth, improving the performance of cell edge users and increasing cell capacity; reducing system delay, and the one-way transmission delay within the user plane is less than 5ms. The transition time of the control plane from the sleep state to the active state is less than 50ms, and the transition time from the resident state to the active state is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W24/10
CPCH04L5/0091H04W24/10
Inventor 王淑坤许瑞锋
Owner BEIJING XINWEI TELECOM TECH
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