Method, base station, and user terminal for realizing uplink resource indication

Abstract

The embodiment of the invention discloses a method for realizing the uplink resource indication. The method comprises the following steps of: establishing a corresponding relationship between an uplink resource index and at least one uplink resource; adding the uplink resource index to the uplink resource distribution indication; and sending the uplink resource distribution indication which carries the uplink resource index. The embodiment of the invention also discloses a base station for realizing the uplink resource indication. The base station comprises a mapping module, an index carrying module and an indication sending module. In addition, the embodiment of the invention discloses a user terminal for realizing the uplink resource indication. The user terminal comprises an indication receiving module, an indication analyzing module and an execution module. By application of the invention, the utilization rate of the resource is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for realizing uplink resource indication, a base station and a user terminal. Background technique [0002] Time Division Duplex (TDD, Time Division Duplex) mode is a mode of wireless transmission in a wireless channel. In TDD mode, transmission and reception are performed in time division. That is to say, the wireless transmission mode based on TDD mode can The uplink and downlink channels are time-division multiplexed. The TDD mode is implemented by periodically repeating the Time Division Multiple Access (TDMA, Time Division Multiple Access) frame structure in the time domain. For example, there are two TDD frame structures in 3GPP LTE in the Long Term Evolution (LTE, Long Term Evolution) , the first frame structure such as figure 1 As shown, a radio frame (radio frame) is composed of 20 time slots (slots), the cycle length of a frame is 10 milliseconds (ms), and e...

AI Technical Summary

Problems solved by technology

For a user, when there are more downlink subframes than uplink subframes, each downlink subframe can be mapped to an uplink subframe, that is, a downlink subframe can be used to send an uplink resource allocation indication for an uplink subframe, but due to The frame structure adopted by the TDD system may have an asymmetric ratio of uplink and downlink subframes as shown in Table 1. That is to say, one downlink subframe may correspond to multiple uplink subframes, so it is impossible to determine the other subframes using one uplink resource allocation indication. In this case, it is usually necessary to use one downlink subframe to send multiple uplink resource allocation indications, so as to realize the correspondence between one downlink subframe and multiple uplink subframes, and these uplink resource allocation indications will sent separately

That is to say, for the same user, if it is determined that n uplink subframes need to be used after scheduling, there will be n corresponding uplink resource allocation indications, and the user identification will be identified due to repeated transmission of n uplink resource allocation indications. Waiting for this kind of information to be repeated n times, thus causing a waste of transmission resources such as signaling and channels

[0011] From the above analysis, it can be seen that the current method for realizing uplink resource indication in a TDD system cannot accurately indicate the uplink resource for which the uplink resource allocation indication is directed, thus often resulting in waste of resources and poor utilization of resources. lower

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