EP-4736554-A1 - SYSTEMS AND METHODS FOR TRANSMITTING ON MULTIPLE SOUNDING REFERENCE SIGNAL RESOURCES IN MULTIPLE TRANSMISSION/RECEPTION POINT OPERATION

EP4736554A1EP 4736554 A1EP4736554 A1EP 4736554A1EP-4736554-A1

Abstract

Presented are systems and methods for transmitting on multiple sounding reference signal resources in a multiple transmission/reception point operation. A wireless communication device can determine whether the condition that the wireless communication device reports supporting simultaneous physical uplink shared channel transmissions is met. If the condition is met, the wireless communication device can then transmit simultaneous physical uplink shared channel transmissions on multiple sounding reference signal resources. The wireless communication node can receive simultaneous physical uplink shared channel transmissions on multiple sounding reference signal resources.

Inventors

ZHANG, YANG
GAO, BO
YAO, Ke
GUO, XIAOLONG
MEI, Meng

Assignees

ZTE Corporation

Dates

Publication Date: 20260506
Application Date: 20230804

Claims (14)

A method comprising: determining, by a wireless communication device, that at least one condition is met, which includes that the wireless communication device reports supporting simultaneous physical uplink shared channel (PUSCH) transmissions; and simultaneously transmitting, by the wireless communication device in response to the at least one condition being met, on a plurality of sounding reference signal (SRS) resources that occupy a same set of one or more resources.
The method of claim 1, comprising: determining, by the wireless communication device, that the at least one condition is met, which further includes that the wireless communication device is configured with a plurality of sets of SRS resources for codebook or non-codebook based PUSCH transmission.
The method of claim 1, wherein the same set of one or more resources comprises at least one of: at least one resource block (RB) or at least one symbol.
The method of claim 2, wherein at least one of: the wireless communication device is configured with the plurality of sets of SRS resources, for codebook based PUSCH transmissions; the wireless communication device simultaneously transmits on only one SRS resource from each of the plurality of sets of SRS resources; or a maximum number of SRS resources on which the wireless communication device can simultaneously transmit, is according to a capability reported by the wireless communication device.
The method of claim 2, wherein at least one of: the wireless communication device is configured with the plurality of sets of SRS resources, for codebook based PUSCH transmissions; when the wireless communication device supports simultaneous PUSCH transmissions in spatial domain modulation (SDM) scheme, up to 2 ports are configured to each of the SRS resources; when the wireless communication device supports simultaneous PUSCH transmissions in single frequency network (SFN) scheme, up to 2 ports or 4 ports are configured to each of the SRS resources; or a maximum number of SRS resources on which the wireless communication device can simultaneously transmit, is according to a capability reported by the wireless communication device.
The method of claim 2, wherein at least one of: the wireless communication device is configured with the plurality of sets of SRS resources, for non-codebook based PUSCH transmissions; the wireless communication device can simultaneously transmit on all SRS resources from the plurality of sets of SRS resources; or a maximum number of SRS resources on which the wireless communication device can simultaneously transmit, is according to a capability reported by the wireless communication device.
The method of claim 2, wherein at least one of: the wireless communication device is configured with the plurality of sets of SRS resources, for non-codebook based PUSCH transmissions; a maximum number of SRS resources on which the wireless communication device can simultaneously transmit, is smaller than a total number of SRS resources configured in the plurality of sets of SRS resources; the maximum number of SRS resources on which the wireless communication device can simultaneously transmit, is determined by a maximum number of transmission layers of a plurality of simultaneously transmitted PUSCHs associated with the plurality of sets of SRS resources; when the wireless communication device supports simultaneous PUSCH transmissions in spatial domain modulation (SDM) scheme, up to 4 SRS resources can be simultaneously transmitted by the wireless communication device; when the wireless communication device supports simultaneous PUSCH transmissions in single frequency network (SFN) scheme, up to 2 or 4 SRS resources can be simultaneously transmitted by the wireless communication device; or the maximum number of SRS resources on which the wireless communication device can simultaneously transmit, is according to a capability reported by the wireless communication device.
The method of claim 2, wherein at least one of: the wireless communication device is configured with the plurality of sets of SRS resources, for non-codebook based PUSCH transmissions; a maximum number of SRS resources from an SRS resource set on which the wireless communication device can simultaneously transmit, is smaller than a total number of SRS resources configured in the plurality of sets of SRS resources; the maximum number of SRS resources from the SRS resource set on which the wireless communication device can simultaneously transmit, is determined by a maximum number of transmission layers of a PUSCH associated with one of the plurality of sets of SRS resources; when the wireless communication device supports simultaneous PUSCH transmissions in space domain modulation (SDM) scheme, up to 2 SRS resources from the SRS resource set can be simultaneously transmitted by the wireless communication device; when the wireless communication device supports simultaneous PUSCH transmissions in single frequency network (SFN) scheme, up to 2 or 4 SRS resources from the SRS resource set can be simultaneously transmitted by the wireless communication device; or the maximum number of SRS resources from the SRS resource set on which the wireless communication device can simultaneously transmit, is according to a capability reported by the wireless communication device.
The method of claim 2, wherein at least one of: the at least one condition being met further includes that the wireless communication device reports supporting SRS antenna switching when a number of receive antenna ports is equal to a number of transmit antenna ports, which is x; a number of transmit antenna ports of a PUSCH that is associated with one of the sets of SRS resources is up to x, and is according to a capability reported by the wireless communication device; a number of the plurality of sets of SRS resources for codebook or non-codebook based PUSCH transmission can be up to a number n which is configured for the wireless communication device; a number of antenna ports of each SRS resource can be set to up to x; antenna ports of each SRS resource in a given one of the sets of SRS resources are associated with different antenna ports of the wireless communication device; different antenna ports of the wireless communication device of an SRS resource can be used for a PUSCH that is associated with one of the sets of SRS resources for codebook or non-codebook based PUSCH transmission; each SRS resource is configured in a different one of the sets of SRS resources; each one of the sets of SRS resources is configured with usage set to antennaSwitching; a number of the plurality of sets of SRS resources can be up to a number m which is configured for the wireless communication device; the value of m is equal to the value of n; each of the sets of SRS reosurces is configured with a same value of higher layer parameter resourceType set to a value of: periodic, semi-persistent or aperiodic; power control parameters of each of the sets of SRS resources can be configured with different or independent values; or a beam state of each SRS resource can be different or independent from that of another SRS resource.
The method of claim 2, wherein at least one of: the at least one condition being met further includes that the wireless communication device reports supporting SRS antenna switching when a number of receive antenna ports is larger than a number of transmit antenna ports, which is x; a number of transmit antenna ports of a PUSCH that is associated with one of the sets of SRS resources is up to x, and is according to a capability reported by the wireless communication device; a number of the plurality of sets of SRS resources for codebook or non-codebook based PUSCH transmission can be up to a number n which is configured for the wireless communication device; a number of antenna ports of each SRS resource can be set to up to x; SRS ports of each SRS resource in a given one of the sets of SRS resources are associated with different antenna ports of the wireless communication device; different antenna ports of the wireless communication device of an SRS resource can be used for a PUSCH that is associated with one of the sets of SRS resources for codebook or non-codebook based PUSCH transmission; each SRS resource is configured in a different one of the sets of SRS resources; each one of the sets of SRS resources is configured with usage set to antennaSwitching; a number of the plurality of sets of SRS resources can be up to a number m which is configured for the wireless communication device; the value of m is equal to the value of n; each of the sets of SRS resources is configured with a same value of higher layer parameter resourceType set to a value of: periodic, semi-persistent or aperiodic; power control parameters of each of the sets of SRS resources can be configured with different or independent values; or a beam state of each SRS resource can be different or independent from that of another SRS resource.
The method of claim 2, wherein at least one of: the at least one condition being met further includes that the wireless communication device is configured with the plurality of sets of SRS resources with usage set to beammanagement; each SRS resource is configured in a different one of the sets of SRS resources; each of the sets of SRS resources is configured with a same value of higher layer parameter resourceType set to a value of: periodic, semi-persistent or aperiodic; each of the sets of SRS resources is configured with one or more SRS resources of 1-port; each of the sets of SRS resources is configured with an identifier; the identifier comprises at least one of: a panel identifier ID, a group ID or a set ID; each SRS resource is associated with a different identifier that is configured for one of the sets of SRS resources; a maximum value of the identifier is equal to a value of n corresponding to a number of the configured SRS resource sets for codebook or non-codebook based PUSCH transmission, wherein n is a positive integer value; SRS ports of each SRS resource in a given one of the sets of SRS resources are associated with different antenna ports of the wireless communication device; power control parameters of each of the sets of SRS resources can be configured with different or independent values; or a beam state of each SRS resource can be different or independent from that of another SRS resource.
A method comprising: receiving, by a wireless communication node, simultaneous transmissions from a wireless communication device, on a plurality of sounding reference signal (SRS) resources that occupy a same set of one or more resources, wherein the simultaneous transmissions are in response to at least one condition being met, which includes that the wireless communication device reports supporting simultaneous physical uplink shared channel (PUSCH) transmissions.
A non-transitory computer readable medium storing instructions, which when executed by at least one processor, cause the at least one processor to perform the method of any one of claims 1-12.
An apparatus comprising: at least one processor configured to implement the method of any one of claims 1-12.

Description

SYSTEMS AND METHODS FOR TRANSMITTING ON MULTIPLE SOUNDING REFERENCE SIGNAL RESOURCES IN MULTIPLE TRANSMISSION/RECEPTION POINT OPERATION TECHNICAL FIELD The disclosure relates generally to wireless communications, including but not limited to systems and methods for transmitting on multiple sounding reference signal resources in a multiple transmission/reception point operation. BACKGROUND Comprehensive coverage is a fundamental aspect of cellular network deployments. Mobile operators use various network nodes to expand coverage. New concepts like integrated access and backhaul (IAB) systems have been explored, eliminating the need for wired backhaul and improving network efficiency. Similarly, the RF repeater is another addition to supplement the coverage for 2G, 3G, and 4G networks. As the industry transitions to the 5G new radio (NR) system, the incorporation of multiple-input, multiple-output (MIMO) features and multiple transmission/reception point (MTRP) operations can further augment coverage and optimize network performance. SUMMARY The example embodiments disclosed herein are directed to solving the issues relating to one or more of the problems presented in the prior art, as well as providing additional features that will become readily apparent by reference to the following detailed description when taken in conjunction with the accompany drawings. In accordance with various embodiments, example systems, methods, devices and computer program products are disclosed herein. It is understood, however, that these embodiments are presented by way of example and are not limiting, and it will be apparent to those of ordinary skill in the art who read the present disclosure that various modifications to the disclosed embodiments can be made while remaining within the scope of this disclosure. At least one aspect is directed to a system, method, apparatus, or a computer-readable medium. A wireless communication device (e.g., UE) can determine that at least one condition is satisfied/met, which includes that the wireless communication device reports supporting simultaneous (e.g., at least partial overlap or concurrency in time domain) physical uplink shared channel (PUSCH) transmissions. The wireless communication device can simultaneously transmit, in response to at least one condition being satisfied/met, on a plurality of sounding reference signal (SRS) resources that occupy a same set of one or more resources. In some implementations, the same set of one or more resources can comprise/include at least one of a resource block (RB) or a symbol. In some implementations, the wireless communication device can determine that at least one condition is satisfied/met, which can include that the wireless communication device is configured with a plurality of sets of SRS resources for codebook or non-codebook based PUSCH transmission. In some implementations, the wireless communication device can be configured with a plurality of sets of SRS resources for codebook-based PUSCH transmissions. The wireless communication device can simultaneously transmit on only one SRS resource from each of the plurality of sets of SRS resources, or the maximum number of SRS resources on which the wireless communication device can simultaneously transmit is according to the capability reported by the wireless communication device. In certain implementations, the wireless communication device can be configured with a plurality of sets of SRS resources for codebook based PUSCH transmissions. When the wireless communication device supports simultaneous PUSCH transmissions in the spatial domain modulation (SDM) scheme, up to 2 ports can be configured to each of the SRS resources. Similarly, when the wireless communication device supports simultaneous PUSCH transmissions in single frequency network (SFN) scheme, up to 2 ports or 4 ports can be configured to each of the SRS resources. The maximum number of SRS resources on which the wireless communication device can simultaneously transmit is according to the capability reported by the wireless communication device. In some implementations, the wireless communication device can be configured with the plurality of sets of SRS resources for non-codebook based PUSCH transmissions. The wireless communication device can simultaneously transmit on all SRS resources from the plurality of sets of SRS resources. The maximum number of SRS resources on which the wireless communication device can simultaneously transmit is according to the capability reported by the wireless communication device. In certain implementations, the wireless communication device can be configured with the plurality of sets of SRS resources for non-codebook based PUSCH transmissions. The maximum number of SRS resources on which the wireless communication device can simultaneously transmit is smaller/less than the total number of SRS resources configured in the plurality of sets of SRS resources. This ma