A sounding reference signal resource allocation method and device
A sounding reference signal and resource allocation technology, applied in the field of sounding reference signal resource allocation methods and devices, can solve the problems of occupying available resources for data transmission, affecting the performance of a base station for evaluating channel conditions, and reducing data transmission speed.
Active Publication Date: 2019-03-26
HUAWEI TECH CO LTD
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[0004] It can be seen that the total amount of SRS resources can only satisfy a certain number of UEs to obtain SRS resources. Then, when the number of UEs is too large, methods such as increasing the total amount of SRS resources or extending the SRS transmission cycle can be used to ensure that each UE is allocated However, increasing the total amount of SRS resources not only needs to modify the existing protocol content, but also occupies available resources for data transmission, thereby reducing the data transmission speed; and prolonging the SRS transmission cycle will cause the UE to fail in time. Report SRS, which affects the evaluation performance of the base station on channel conditions
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[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0046] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.
[0047] Since the total amount of SRS resources is limited, and with the increase of the number of UEs in the cell, the current SRS resource allocation methods such as code division multiplexing, frequency division multip...
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Embodiments of the present invention provide a method and device for allocating SRS resources, which relate to the field of communication technology, and can ensure that each UE is allocated to SRS resources without increasing the total amount of SRS resources, and without prolonging the sending period of the SRS. The method includes: For each of the N UEs, the base station measures the channel state between the UE and the M antennas of the base station, and obtains a set of channel information until the base station obtains N sets of channel information; the base station determines the channel status according to the N sets of channel information. Interference levels between the first UE to which resources are allocated and N-1 UEs except the first UE among the N UEs are obtained to obtain N-1 interference levels; the base station assigns the second UE according to the N-1 interference levels The occupied SRS resource is allocated to the first UE, and the second UE is any one of the N-1 UEs whose interference level with the first UE is less than an interference level threshold.
Description
technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method and device for allocating Sounding reference signal (Sounding reference signal, SRS) resources. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, UE (User Equipment, user equipment) can periodically send a sounding reference signal, namely SRS, to the base station on the last data symbol of a subframe according to the bandwidth allocated by the base station, The base station performs demodulation and channel condition assessment based on the sounding reference signal, thereby obtaining the uplink channel condition. [0003] In order for the UE to transmit uplink SRS on the specified physical resources, the base station must allocate specific physical resources, namely SRS resources, for each UE, and the total amount of SRS resources is certain. Each UE usually uses code division multiplexing, Modes such as f...
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IPC IPC(8): H04W72/08H04W72/04H04L5/00H04W72/54
CPCH04L5/0053H04W72/541H04W72/23H04B7/04H04W72/04H04W72/54
Inventor 李小伟金磊彭晶波阙程晟
Owner HUAWEI TECH CO LTD