CN110943813A - SRS resource transmission method and device - Google Patents

SRS resource transmission method and device Download PDF

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Publication number
CN110943813A
CN110943813A CN201811108361.2A CN201811108361A CN110943813A CN 110943813 A CN110943813 A CN 110943813A CN 201811108361 A CN201811108361 A CN 201811108361A CN 110943813 A CN110943813 A CN 110943813A
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China
Prior art keywords
srs
srs resource
transmission priority
symbols
resource
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CN201811108361.2A
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Chinese (zh)
Inventor
王爱玲
倪吉庆
周伟
左君
韩双锋
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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Application filed by China Mobile Communications Group Co Ltd, China Mobile Communications Ltd Research Institute filed Critical China Mobile Communications Group Co Ltd
Priority to CN201811108361.2A priority Critical patent/CN110943813A/en
Priority to PCT/CN2019/097041 priority patent/WO2020057245A1/en
Publication of CN110943813A publication Critical patent/CN110943813A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel

Abstract

The invention discloses a method and equipment for SRS resource transmission, which are used for solving the problem of how to transmit SRS resources when a plurality of SRS resources collide on the same symbol of a time slot in the prior art. According to the embodiment of the invention, when a plurality of SRS resources collide on the same symbol of a time slot, the terminal selects the SRS resource transmitted on the same symbol according to the transmission priority rule of the SRS resource and transmits the SRS resource on the same symbol, and because the terminal transmits the SRS resource selected by the terminal according to the transmission priority rule of the SRS resource on the same symbol, the problem of SRS resource transmission when a plurality of SRS resources collide on the same symbol of a time slot can be solved, and the influence on the system performance is further reduced.

Description

SRS resource transmission method and device
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and a device for SRS resource transmission.
Background
In an LTE (Long Term Evolution) system, a Sounding Reference Signal (SRS) only occupies one symbol (symbol), and if the SRS is configured to be transmitted on a certain subframe, the SRS occupies the last symbol (symbol) of the subframe. In addition, the time domain property (time bearer) of the SRS can be configured in two ways, namely, a periodic SRS (P-SRS) and an Aperiodic SRS (AP-SRS), and it is specified in the standard that if a UE (User Equipment) needs to transmit the periodic SRS and the Aperiodic SRS in the same subframe of the same serving cell, the UE only transmits the Aperiodic SRS.
In the 5G NR system, one SRS resource (SRS resource) may be configured with consecutive [1,2,4] symbols on the last 6 symbols of one slot, and one SRS resource set (SRS resource set) may include multiple SRS resources. SRS resource (set) can be configured to three time domain properties: periodic SRS resource (P-SRS), Aperiodic SRS resource (AP-SRS resource), Semi-persistent periodic SRS resource (SP-SRS resource). The time domain properties of all SRS resources contained in one SRS resource set need to be configured consistently, that is, the periodicity types are consistent.
In the prior art, multiple SRS resources may be configured to transmit simultaneously on the same symbol of the same timeslot, that is, the configured multiple SRS resources collide on the same symbol, and at this time, a problem of how to transmit the multiple SRS resources on the same symbol needs to be solved.
However, there is no prior art processing scheme for how to transmit multiple SRS resources when collisions occur on the same symbol of the same slot.
Disclosure of Invention
The invention provides a method and equipment for SRS resource transmission, which are used for solving the problem of how to transmit SRS resource when a plurality of SRSresources collide on the same symbol of a time slot in the prior art.
In a first aspect, a method for SRS resource transmission provided in an embodiment of the present invention includes:
if the configured multiple SRS resources collide on the same symbol, the terminal selects the SRS resources transmitted on the same symbol according to the transmission priority rules of the multiple SRSresources;
and the terminal sends the SRS resource on the same symbol.
According to the method, the terminal selects the SRS resources transmitted on the same symbol according to the transmission priority rules of the plurality of SRS resources and transmits the SRS resources on the same symbol, so that the problem of SRS resource transmission when the plurality of SRSresources collide on the same symbol of one time slot can be solved, and further the influence on the system performance is reduced.
In one possible implementation, the method further includes:
and aiming at any SRS resource, the terminal determines a symbol occupied by the SRSresource in a time slot according to an SRS physical layer resource mapping rule.
In the possible implementation manner, when there are multiple SRS resources in one slot, for any SRSresource, the terminal determines the symbol occupied by the SRS resource in one slot according to the SRS physical layer resource mapping rule, so as to determine the symbol occupied by the multiple SRS resources in one slot, and further determine whether there are multiple SRS resources on the same symbol.
In a possible implementation manner, the selecting, by the terminal, SRS resources transmitted on the same symbol according to transmission priority rules of multiple SRS resources includes:
and the terminal selects the SRS resource with the highest transmission priority on the same symbol.
In the above possible implementation manner, when there are multiple SRS resources in one slot, the terminal selects the SRS resource with the highest transmission priority on the same symbol, so as to transmit the SRS resource with the highest transmission priority on the same symbol.
In one possible implementation, the method further includes:
the terminal only discards SRS resources which are not the highest transmission priority in the plurality of SRS resources on the same symbol, and normally transmits the SRS resources on the symbols which are not collided; or
The terminal discards SRSresources which are not the highest transmission priority in the plurality of SRS resources on all symbols;
wherein the all symbols refer to symbols of a non-highest transmission priority srsrsresource configuration that collide in one slot.
The possible implementation modes give two ways for the terminal to process the SRS resource with the non-highest transmission priority, wherein the first way is that the terminal discards the SRS resource with the non-highest transmission priority on the same symbol and normally transmits the SRS resource on the symbol without collision, and the way can reduce the influence on the system spectrum efficiency caused by the SRS resource discarding; in a second mode, the terminal discards SRS resource with non-highest transmission priority in the plurality of SRS resource on all symbols, and the method can reduce the complexity of terminal processing.
In one possible implementation, the method further includes:
the terminal determines to adopt a mode of discarding SRS resource with non-highest transmission priority in the SRSresource only on the same symbol according to the notification of the network side equipment, and normally transmits the SRS resource on the symbol without collision or adopts a mode of discarding SRS resource with non-highest transmission priority in the SRSresource on all symbols; or
And the terminal determines to adopt a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources only on the same symbol according to the terminal capability information, and normally transmits the SRS resource on the symbols which are not collided or adopts a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources on all symbols.
In the foregoing possible implementation manner, for the two processing manners of the SRS resource with the non-highest transmission priority, which manner is specifically adopted by the terminal for processing may be determined by the terminal according to the notification of the network side device, or may be determined according to the terminal capability information.
In a possible implementation manner, the terminal determines the transmission priority rule of the SRS resource by the following means:
the terminal determines a transmission priority rule of the SRS resource according to the time domain property of the SRS resource; or
And the terminal determines the transmission priority rule of the SRSresource according to the function configured by the SRS resource set to which the SRS resource belongs.
In the possible implementation manners, two manners of determining the transmission priority of the SRS resource are provided, and the determination is performed according to the time domain property of the SRSresource or according to the function configured by the SRS resource set to which the SRS resource belongs, so that the determination of the transmission priority of the SRS resource by the terminal is more flexible.
In one possible implementation, at least one SRS resource of the plurality of SRS resources configures 2 symbols or 4 symbols.
In a second aspect, an embodiment of the present invention further provides an apparatus for SRS resource transmission, where the apparatus includes: a processor and a transceiver:
the processor is configured to select, if multiple configured SRS resources collide with one another on the same symbol, the SRS resources transmitted on the same symbol according to transmission priorities of the multiple SRS resources; transmitting the SRS resource on the same symbol.
In one possible implementation, the processor is further configured to:
and aiming at any SRS resource, determining a symbol occupied by the SRSresource in a time slot according to an SRS physical layer resource mapping rule.
In one possible implementation, the processor is specifically configured to:
and selecting the SRS resource with the highest transmission priority on the same symbol.
In one possible implementation, the processor is further configured to:
only discarding SRSresources with non-highest transmission priorities in the plurality of SRS resources on the same symbol, and normally sending the SRSresources on the symbols without collision; or
Discarding SRSresources of the plurality of SRS resources that are not the highest transmission level priority over all symbols;
wherein the all symbols refer to symbols of a non-highest transmission priority srsrsresource configuration that collide in one slot.
In one possible implementation, the processor is further configured to:
determining to adopt a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRSresources only on the same symbol according to the notification of the network side equipment, and normally transmitting on the symbols without collision or adopting a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRS resources on all symbols; or
And determining to adopt a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources only on the same symbol according to the terminal capability information, and normally sending the SRS resource on the symbols which are not collided or adopting a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources on all symbols.
In one possible implementation, the processor is specifically configured to:
determining a transmission priority rule for SRS resource by:
determining a transmission priority rule of the SRS resource according to the time domain property of the SRS resource; or
And determining the transmission priority rule of the SRS resource according to the function of SRS resource set configuration to which the SRS resource belongs.
In one possible implementation, at least one SRS resource of the plurality of SRS resources configures 2 symbols or 4 symbols.
In a third aspect, an embodiment of the present invention further provides an apparatus for SRS resource transmission, where the apparatus includes: at least one processing unit and at least one memory unit, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the following:
if the configured multiple SRS resources collide on the same symbol, the SRS resources transmitted on the same symbol are selected according to the transmission priority rules of the multiple SRS resources; transmitting the SRS resource on the same symbol.
In a fourth aspect, an embodiment of the present invention further provides an apparatus for SRS resource transmission, where the apparatus includes a selecting module and a sending module:
a selection module: the SRS resource transmission method comprises the steps that when a plurality of configured SRS resources collide on the same symbol, the SRS resources transmitted on the same symbol are selected according to transmission priority rules of the SRS resources;
a sending module: for transmitting the SRS resource on the same symbol.
In a fifth aspect, an embodiment of the present invention further provides a computer storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the methods in the first aspect.
In addition, for technical effects brought by any one implementation manner of the second aspect to the fifth aspect, reference may be made to technical effects brought by different implementation manners of the first aspect, and details are not described here.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a method for SRS resource transmission according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a symbol occupied by SRS resource determined according to a resource mapping rule in the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an SRS resource for determining two different time domain properties on the same symbol according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal adopting symbol-level SRS resource discarding in the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a terminal adopting resource level SRS resource discarding in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to SRS resource time domain property transmission priority and discarding SRS resource at symbol level in the embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal according to SRS resource time domain property transmission priority and discarding SRS resource by using resource level in the embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a terminal according to the functional transmission priority configured by SRS resource set to which SRS resource belongs and discarding SRS resource at symbol level in the embodiment of the present invention;
FIG. 9 is a schematic structural diagram of SRS resource sets with two different time domain properties configured for the same beam in the embodiment of the present invention;
FIG. 10 is a block diagram of an embodiment of the present invention employing symbol level discard;
fig. 11 is a schematic structural diagram of a first SRS resource sending device according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a second SRS resource sending device according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a third SRS resource sending device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The SRS resource in the 5G NR system is different from the SRS in LTE, and the SRS resource in the 5G NR system may be configured with multiple symbols, for example, one SRS resource is configured with 2 symbols or one SRS resource is configured with 4 symbols, so in the 5G NR system, if a terminal collides when transmitting multiple SRS resources, a SRS resource discarding scheme at a symbol level may be considered.
The terminal in the embodiment of the invention is a device with a wireless communication function, can be deployed on land and comprises an indoor or outdoor terminal, a handheld terminal or a vehicle-mounted terminal; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), etc.; but also UEs in various forms, Mobile Stations (MSs), the terminal equipment (terminal device).
The application scenario described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not form a limitation on the technical solution provided in the embodiment of the present application, and it can be known by a person skilled in the art that with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.
For the application scenario, the present application provides a method for SRS resource transmission, specifically as shown in fig. 1, the method specifically includes the following steps:
s100, if the configured SRS resources collide on the same symbol, the terminal selects the SRS resources transmitted on the same symbol according to the transmission priority rules of the SRSresources;
s101, the terminal sends the SRS resource on the same symbol.
In the embodiment of the invention, if a plurality of configured SRS resources collide on the same symbol, the terminal selects the SRS resources transmitted on the same symbol according to the transmission priority rules of the SRS resources and transmits the SRS resources on the same symbol, and because the terminal selects the SRS resources transmitted on the same symbol according to the transmission priority rules of the SRS resources, the problem of SRS resource transmission when the SRS resources collide on the same symbol of a time slot can be solved, and further the influence on the system performance is reduced.
It should be noted that, in the LTE system, the sounding reference signal configured by the base station for the terminal only occupies one symbol, so the sounding reference signal in the LTE system is an SRS, and in the 5G NR system, the sounding reference signal configured by the base station for the terminal may occupy multiple symbols, so the sounding reference signal in the 5G NR system is an SRS resource and can be translated into an SRS resource.
In the embodiment of the invention, at least one SRS resource in the plurality of SRS resources is configured to be 2 symbols or 4 symbols.
In the embodiment of the present invention, multiple configured SRS resources collide with each other on the same symbol, where collision refers to that multiple SRS resources are configured on the same symbol for simultaneous transmission, and collision may also be referred to as collision.
In the implementation, when the terminal determines whether multiple SRS resources configured on the same symbol need to be transmitted simultaneously, it needs to determine the symbols occupied by the multiple SRS resources in one slot.
Specifically, the symbols occupied by multiple SRS resources in one slot are determined, and for any SRSresource, the symbols occupied by the SRS resources in one slot may be determined according to an SRS physical layer resource mapping rule.
For the convenience of understanding, the following describes the determination of the symbols occupied by SRS resource in a slot according to the SRS physical layer resource mapping rule.
The symbol occupied by an SRS resource in a slot is according to the parameter resource Mapping configured by the higher layer signaling) Parameter l in0In the case of a certain number of times,
Figure BDA0001808471500000091
wherein
Figure BDA0001808471500000092
Representing the total number of symbols in a slot (typically 14),
Figure BDA0001808471500000093
for symbol offset, the offset from the last symbol of a slot onwards is indicated, i.e. equal to 0 indicates the last symbol of an offset in a slot, and
Figure BDA0001808471500000094
indicating the number of symbols occupied by one SRS resource in one slot.
As shown in fig. 2, when
Figure BDA0001808471500000095
A value of 4, loffsetWhen the value is 4, the number l0The value is 9, i.e. the starting position of the SRSresource of 4 symbols in one slot is 9.
It should be noted that, specifically, the slots for transmitting the SRS are configured by the high-layer parameters, and the period T of the periodic SRS and the semi-persistent periodic SRSSRS(in slots) and slot offset periods ToffsetAnd (4) determining. The aperiodic SRS is determined according to a slot triggered by DCI (Downlink Control information) and a slot offset.
After the terminal determines the symbols occupied by the multiple SRS resources in one time slot, whether the configured multiple SRS resources collide on the same symbol can be determined, and if the configured multiple SRS resources collide on the same symbol, the terminal selects the SRS resources sent on the same symbol according to the transmission priority rules of the multiple SRS resources.
It should be noted that in the 5G NR system, one SRS resource set may include multiple srsresources, and the SRS resource or SRS resource set may be configured with three time domain properties, periodic, aperiodic and semi-persistent.
For example, the base station configures two SRS resource sets for the terminal, where time domain properties of srsrsresources in the two SRS resource sets are periodic and aperiodic, respectively, as shown in fig. 3, the terminal determines that the periodic SRS resource occupies 4 symbols in the slot1 according to the SRS physical layer resource mapping rule, and the symbols are the last 4 symbols of the slot1, that is, symbol 10, symbol 11, symbol 12 and symbol 13; the terminal determines that the aperiodic SRS resource occupies 1 symbol in the slot1 according to the SRS physical layer resource mapping rule, and the aperiodic SRS resource is the last symbol of the slot1, that is, the symbol 13. As can be seen from fig. 3, a periodic SRS resource and an aperiodic SRS resource are configured on the symbol 13 of the slot1, that is, the periodic SRS resource and the aperiodic SRS resource collide on the symbol 13.
And if the terminal determines that the configured multiple SRS resources collide on the same symbol, the terminal selects the SRS resources transmitted on the same symbol according to the transmission priority rules of the multiple SRS resources.
Before the terminal selects the srsrsresources transmitted on the same symbol according to the transmission priority rules of the multiple SRS resources, the terminal needs to determine the transmission priority rules of the multiple SRS resources. The terminal has two ways of determining the transmission priority rule of the SRSresource, which are respectively determining the transmission priority rule of the SRS resource according to the time domain property of the SRS resource and determining the transmission priority rule of the SRS resource according to the function configured by the SRS resource set to which the SRS resource belongs.
The following respectively describes the transmission priority rule of the terminal for determining the SRS resource according to the time domain property of the SRS resource and the transmission priority rule of the terminal for determining the SRS resource according to the function configured by the SRS resource set to which the SRS resource belongs.
In the first mode, the terminal determines the transmission priority rule of the SRS resource according to the time domain property of the SRS resource.
Since there are three time domain properties of SRS resource, aperiodic, semi-persistent and periodic, and the transmission priority of aperiodic SRS resource, semi-persistent SRS resource and periodic SRS resource has been determined, i.e. the transmission priority of aperiodic SRS resource is higher than the transmission priority of semi-persistent SRS resource/the transmission priority of periodic SRS resource, the transmission priority of semi-persistent SRS resource is higher than the transmission priority of periodic SRSresource, and the transmission priority of aperiodic SRS resource is higher than the transmission priority of periodic SRS resource.
Therefore, the terminal determines the transmission priority rule of the SRS resource as aperiodic SRS resource > semi-persistent SRS resource > periodic SRS resource according to the time domain property of the SRS resource.
And secondly, the terminal determines the transmission priority of the SRS resource according to the function of SRS resource set configuration to which the SRS resource belongs.
In the 5G NR system, the terminal can configure srsrsresource set into four functional types by means of a higher layer parameter SRS-SetUse (SRS-setup use): beam management (beam management), Codebook based uplink transmission (Codebook), non-Codebook based uplink transmission (non-Codebook), and antenna switching (antenna switching).
For the transmission priority of the SRS resource in the SRS resource sets with 4 different functions, the transmission priority can be determined according to the transmission priority configured by the higher layer signaling of the base station, that is, the terminal determines the transmission priority of the SRS resource in the SRSresource set according to the indication of the higher layer signaling.
For example, the transmission priority of srsrsresource in the SRS resource set managed by the beam configured for the terminal by the higher layer signaling of the base station is higher than the transmission priority of SRSresource in the SRS resource set for antenna switching.
After the terminal determines the transmission priority rule of the SRS resource on the same symbol through the two modes, the SRS resource with the highest transmission priority is selected on the same symbol.
For example, the terminal determines the transmission priority of the SRS resource according to the time domain property of the SRS resource, if there are two SRS resources with different time domain properties on the same symbol, which are respectively a periodic SRS resource and an aperiodic SRS resource, and since the transmission priority of the aperiodic SRS resource is higher than that of the periodic SRS resource, the terminal selects the SRS resource with the highest transmission priority, that is, the aperiodic SRS resource, on the same symbol.
For another example, the terminal determines the transmission priority of the SRS resource according to the function of SRS resource set configuration to which the SRS resource belongs, if there are two SRS resources on the same symbol, and the functions of the SRS resource set configurations to which the two SRS resources belong are different, and are respectively beam management and antenna switching, the two SRS resources on the same symbol are respectively beam management SRS resource and antenna switching SRS resource, and the base station notifies the terminal through a high-level signaling that the beam management SRS resource transmission priority is higher than the antenna switching SRS resource transmission priority, and the terminal selects the SRS resource with the highest transmission priority, that is, the beam management SRS resource, on the same symbol.
It should be noted that, for multiple SRS resources with the same function and different time domain properties that belong to SRS resource set configuration, the terminal may select to determine the transmission priority rule of the SRS resource according to the time domain property of the SRS resource;
for a plurality of SRSresources with the same time domain property and different functions of the belonged SRS resource set configuration, the terminal can select to determine the transmission priority rule of the SRS resource according to the function of the SRS resource set configuration to which the SRS resource belongs;
for a plurality of srsrsresources having the same SRS resource set configuration function and the same time domain property, the terminal may select to determine the transmission priority rule of the SRS resource according to the SRS resource time domain property, or may select to determine the transmission priority rule of the SRSresource according to the SRS resource set configuration function to which the SRS resource belongs.
And after the terminal selects the SRSresource with the highest transmission priority according to the transmission priority rules of the plurality of SRS esources, the SRS esource with the highest transmission priority is sent on the same symbol.
In implementation, SRS resource with the highest transmission priority on other symbols of the same slot is normally transmitted on other symbols, where other symbols refer to symbols in a slot other than the same symbol in which collision occurs.
For the SRS resource with the non-highest transmission priority, there may be two processing manners, that is, the SRS resource with the non-highest transmission priority in the plurality of SRS resources is discarded on the same symbol, and the SRS resource with the non-highest transmission priority is normally sent on other symbols; and the SRS resource which is not the highest transmission priority in the plurality of SRSresources is discarded on all symbols.
It should be noted that all symbols herein refer to the symbols of SRS resource configuration with non-highest transmission priority that collide in one slot.
For ease of understanding, the following describes the processing of SRS resource of non-highest transmission priority by way of example.
As shown in fig. 4, the UE configures two SRS resource sets, where the time domain properties of srsrsresources in the two SRS resource sets are aperiodic and periodic, respectively, and as can be seen from fig. 4, there are 14 symbols in the Slot1, and the periodic SRS resource configures 4 symbols and is configured on the last 4 symbols of the Slot 1; the aperiodic SRS resource is configured with 1 symbol and is configured on the last 1 symbol of the Slot1, so that there are both periodic SRS resource and aperiodic SRS resource on the last 1 symbol of the Slot 1.
When the last 1 symbol of the Slot1 in fig. 4 has both a periodic SRS resource and an aperiodic SRS resource, the terminal selects the SRS resource with the highest transmission priority, and the transmission priority of the aperiodic SRS resource is higher than that of the periodic SRS resource, so the terminal selects to transmit the aperiodic SRS resource on the last 1 symbol of the Slot 1. For the periodic SRS resource with the non-highest transmission priority, the terminal may discard the periodic SRS resource on the last 1 symbol of the Slot1, and normally transmit the periodic SRS resource on the other three symbols, that is, the terminal discards the periodic SRS resource on part of the symbols, that is, a symbol-level discarding principle is adopted;
the terminal may also drop the periodic SRS resource on the last 4 symbols of Slot1, i.e. the terminal drops the periodic SRS resource on all symbols. As shown in fig. 5, the periodic SRS resource on the last 4 symbols of Slot1 is discarded for the terminal, i.e. the resource level discard principle is adopted.
In implementation, the terminal also needs to determine which way to specifically select to process the SRSresource with the non-highest transmission priority.
The terminal can discard the SRSresource with the non-highest transmission priority on the same symbol or discard the SRS resource with the non-highest transmission priority in the plurality of SRS resources on all symbols according to the manner notified by the network side equipment;
the terminal may also determine to discard SRS resources with non-highest transmission priority on the same symbol or to discard SRS resources with non-highest transmission priority among the plurality of SRS resources on all symbols according to the terminal capability information.
The following is a description of specific examples.
Example 1
The UE is configured with two SRS resource sets, the time domain properties of which are aperiodic and periodic, respectively. Where aperiodic SRS resource is 1 symbol configuration, i.e. symbol 13, and periodic SRS resource is 4 symbol configurations, i.e. symbol 10, symbol 11, symbol 12 and symbol 13. As shown in fig. 6, after triggering an aperiodic SRS resource through DCI, the aperiodic SRS resource and the periodic SRS resource collide on a symbol 13 of slot1 because of the slot offset.
Adding a dropping rule into the UE capability list fed back by the UE to be a symbol-level dropping rule, wherein according to an SRS resource transmission priority rule configured by high-level signaling of a base station end, the transmission priority of the aperiodic SRS resource is higher than that of the periodic SRSresource, so that the UE transmits the aperiodic SRS resource on a symbol 13, drops the periodic SRS resource on the symbol 13, and normally transmits the periodic SRS resource on a symbol 10, a symbol 11 and a symbol 12.
Example 2
The UE is configured with two SRS resource sets, the time domain properties of which are aperiodic and periodic, respectively. Where aperiodic SRS resource is 1 symbol configuration, i.e. symbol 13, and periodic SRS resource is 4 symbol configurations, i.e. symbol 10, symbol 11, symbol 12 and symbol 13. As shown in fig. 7, after triggering an aperiodic SRS resource through DCI, the aperiodic SRS resource and the periodic SRS resource collide on a symbol 13 of slot1 because of the slot offset.
Adding a dropping rule into the UE capability list fed back by the UE to be resource level dropping, wherein according to an SRS resource transmission priority rule configured by high-level signaling of a base station end, the transmission priority of the aperiodic SRS resource is higher than that of the periodic SRSresource, so that the UE sends the aperiodic SRS resource on a symbol 13, and drops the periodic SRS resource on the symbol 10, the symbol 11, the symbol 12 and the symbol 13.
Example 3
The UE is configured with two SRS resource sets, and the SRS-SetUse of the SRS resource in the two SRS resource sets are Beam management and Antenna switching respectively. As shown in FIG. 8, SRS resources of two different SRS-SetUse collide at symbol 13 of slot 1.
And adding a discarding rule into the UE capability list fed back by the UE to be symbol-level discarding, wherein the transmission priority of the Beam management configured according to the high-level signaling of the base station end is higher than that of the Antenna switching, and the UE only sends SRS resource for the Beam management and discards the SRS resource for the Antenna switching.
Example 4
As shown in fig. 9, the base station configures a periodic SRS resource set (P-SRS set1) for downlink beam scanning operation of beam management. In two transmission periods of the P-SRS set1, the base station triggers an aperiodic SRS resource set (AP-SRS set2) through the DCI. At the base station side, it may be able to avoid collision between P-SRS set1 and AP-SRS set2, but since at least one SRS resource set may be triggered by one piece of DCI, this piece of DCI may also trigger an AP-SRS set3 transmission in the same state as AP-SRS set2 (i.e. configured with the same high-layer parameter aperiodically SRS-resource trigger). Due to the slot offset configuration of AP-SRS set, SRS resource in AP-SRSset3 and P-SRS set1 may collide on the same symbol.
According to the conclusion of the 3GPP RAN1(3rd Generation Partnership Project RAN, third Generation Partnership Project radio access network) #92bis conference, the base station can configure the user to transmit SRS with multiple symbols using the same beam, wherein the SRS with multiple symbols can belong to the same resource. As shown in FIG. 10, where 4 symbols of P-SRSresource belong to P-SRS set1, and 1 symbol of AP-SRS resource belongs to AP-SRS set 3. As can be seen from fig. 10, the P-SRS and the AP-SRS collide on the last symbol in one slot (i.e., symbol # 13). If only one symbol of P-SRS resource is discarded, the beam selection at the base station side will not be affected, because even if less than an optimal beam is selected, a suboptimal beam can be selected. But if the P-SRS resource is all dropped, the beam selection at the base station side may be affected. Therefore, according to the SRS resource transmission priority rule and the symbol-level srsrsresource dropping rule, the UE will send P-SRS on symbols 10,11,12 and AP-SRS on symbol 13, i.e. the UE will only drop SRS with low transmission priority on the collided symbols, and at the next transmission period of the periodic SRS, the P-SRS will be normally sent on 4 symbols as original configuration.
Based on the same inventive concept, the embodiment of the present invention further provides a device for sending SRS resource, because the device is the sending device for sending SRS resource in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.
As shown in fig. 11, an embodiment of the present invention further provides an apparatus for SRS resource transmission, where the apparatus includes: processor 1100 and transceiver 1101:
the processor 1100 is configured to select, if multiple configured SRS resources collide with one another on the same symbol, the SRS resources transmitted on the same symbol according to the transmission priority rules of the multiple SRS resources; transmitting the SRS resource on the same symbol.
The transceiver 1101 is used to transmit and receive data under the control of the processor 1100.
Optionally, the processor 1100 is further configured to:
and aiming at any SRS resource, determining a symbol occupied by the SRSresource in a time slot according to an SRS physical layer resource mapping rule.
Optionally, the processor 1100 is specifically configured to:
and selecting the SRS resource with the highest transmission priority on the same symbol.
Optionally, the processor 1100 is further configured to:
only discarding SRSresources with non-highest transmission priorities in the plurality of SRS resources on the same symbol, and normally sending the SRSresources on the symbols without collision; or
Discarding SRS resources of the plurality of SRS resources that are not of a highest transmission priority over all symbols;
wherein the all symbols refer to symbols of a non-highest transmission priority srsrsresource configuration that collide in one slot.
Optionally, the processor 1100 is further configured to:
determining to adopt a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRSresources only on the same symbol according to the notification of the network side equipment, and normally transmitting on the symbols without collision or adopting a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRS resources on all symbols; or
And determining to adopt a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources only on the same symbol according to the terminal capability information, and normally sending the SRS resource on the symbols which are not collided or adopting a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources on all symbols.
Optionally, the processor 1100 is specifically configured to:
determining a transmission priority rule for SRS resource by:
determining a transmission priority rule of the SRS resource according to the time domain property of the SRS resource; or
And determining the transmission priority rule of the SRS resource according to the function of SRS resource set configuration to which the SRS resource belongs.
Optionally, at least one SRS resource in the plurality of SRS resources configures 2 symbols or 4 symbols.
Based on the same inventive concept, the embodiment of the present invention further provides a device for sending SRS resource, because the device is the sending device for sending SRS resource in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.
As shown in fig. 12, an embodiment of the present invention further provides an apparatus for SRS resource transmission, where the apparatus includes: at least one processing unit 1200 and at least one memory unit 1201, wherein the memory unit 1201 stores program code that, when executed by the processing unit 1200, causes the processing unit 1200 to perform the following:
if the configured multiple SRS resources collide on the same symbol, the SRS resources transmitted on the same symbol are selected according to the transmission priority rules of the multiple SRS resources; transmitting the SRS resource on the same symbol.
Optionally, the processing unit 1200 is further configured to:
and aiming at any SRS resource, determining a symbol occupied by the SRSresource in a time slot according to an SRS physical layer resource mapping rule.
Optionally, the processing unit 1200 is specifically configured to:
and selecting the SRS resource with the highest transmission priority on the same symbol.
Optionally, the processing unit 1200 is further configured to:
only discarding SRSresources with non-highest transmission priorities in the plurality of SRS resources on the same symbol, and normally sending the SRSresources on the symbols without collision; or
Discarding SRS resources of the plurality of SRS resources that are not of a highest transmission priority over all symbols;
wherein the all symbols refer to symbols of a non-highest transmission priority srsrsresource configuration that collide in one slot.
Optionally, the processing unit 1200 is further configured to:
determining to adopt a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRSresources only on the same symbol according to the notification of the network side equipment, and normally transmitting on the symbols without collision or adopting a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRS resources on all symbols; or
And determining to only adopt a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources on the same symbol or adopt a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources on all symbols according to the terminal capability information.
Optionally, the processing unit 1200 is specifically configured to:
determining a transmission priority rule for SRS resource by:
determining a transmission priority rule of the SRS resource according to the time domain property of the SRS resource; or
And determining the transmission priority rule of the SRS resource according to the function of SRS resource set configuration to which the SRS resource belongs.
Optionally, at least one SRS resource in the plurality of SRS resources configures 2 symbols or 4 symbols.
Based on the same inventive concept, the embodiment of the present invention further provides a device for sending SRS resource, because the device is the sending device for sending SRS resource in the embodiment of the present invention, and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.
As shown in fig. 13, an embodiment of the present invention further provides an apparatus for SRS resource transmission, where the apparatus includes: selection module 1300 and sending module 1301:
the selection module 1300: the SRS resource transmission method comprises the steps that when a plurality of configured SRS resources collide on the same symbol, the SRS resources transmitted on the same symbol are selected according to transmission priority rules of the SRS resources;
the sending module 1301: for transmitting the SRS resource on the same symbol.
Optionally, the selecting module 1300 is further configured to:
and aiming at any SRS resource, determining a symbol occupied by the SRSresource in a time slot according to an SRS physical layer resource mapping rule.
Optionally, the selecting module 1300 is specifically configured to:
and selecting the SRS resource with the highest transmission priority on the same symbol.
Optionally, the selecting module 1300 is further configured to:
only discarding SRSresources with non-highest transmission priorities in the plurality of SRS resources on the same symbol, and normally sending the SRSresources on the symbols without collision; or
Discarding SRS resources of the plurality of SRS resources that are not of a highest transmission priority over all symbols;
wherein the all symbols refer to symbols of a non-highest transmission priority srsrsresource configuration that collide in one slot.
Optionally, the selecting module 1300 is further configured to:
determining to adopt a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRSresources only on the same symbol according to the notification of the network side equipment, and normally transmitting on the symbols without collision or adopting a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRS resources on all symbols; or
And determining to adopt a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources only on the same symbol according to the terminal capability information, and normally sending the SRS resource on the symbols which are not collided or adopting a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources on all symbols.
Optionally, the selecting module 1300 is specifically configured to:
determining a transmission priority rule for SRS resource by:
determining a transmission priority rule of the SRS resource according to the time domain property of the SRS resource; or
And determining the transmission priority rule of the SRS resource according to the function of SRS resource set configuration to which the SRS resource belongs.
Optionally, at least one SRS resource in the plurality of SRS resources configures 2 symbols or 4 symbols.
Embodiments of the present invention also include a computer-readable medium having stored thereon a computer program that, when executed by a processor, performs the steps of the method described above with respect to fig. 1.
The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (16)

1. A method for sounding reference Signal Resource (SRS) resource transmission, the method comprising:
if the configured multiple SRS resources collide on the same symbol, the terminal selects the SRS resources transmitted on the same symbol according to the transmission priority rules of the multiple SRS resources;
and the terminal sends the SRS resource on the same symbol.
2. The method of claim 1, further comprising:
and aiming at any SRS resource, the terminal determines a symbol occupied by the SRSresource in a time slot according to an SRS physical layer resource mapping rule.
3. The method of claim 1, wherein the terminal selects SRS resources transmitted on the same symbol according to transmission priority rules of multiple SRS resources, comprising:
and the terminal selects the SRS resource with the highest transmission priority on the same symbol.
4. The method of claim 3, further comprising:
the terminal only discards SRSresources which are not the highest transmission priority in the plurality of SRS resources on the same symbol, and normally sends the SRSresources on the symbols which are not collided; or
The terminal discards SRSresources which are not the highest transmission priority in the plurality of SRS resources on all symbols;
wherein the all symbols refer to symbols of a non-highest transmission priority srsrsresource configuration that collide in one slot.
5. The method of claim 4, further comprising:
the terminal determines to adopt a mode of discarding SRS resource with non-highest transmission priority in the SRSresource only on the same symbol according to the notification of the network side equipment, and normally transmits the SRS resource on the symbol without collision or adopts a mode of discarding SRS resource with non-highest transmission priority in the SRSresource on all symbols; or
And the terminal determines to adopt a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources only on the same symbol according to the terminal capability information, and normally transmits the SRS resource on the symbols which are not collided or adopts a mode of discarding the SRS resource with the non-highest transmission priority in the SRSresources on all symbols.
6. The method of claim 1, wherein the terminal determines the transmission priority rule of SRS resource by:
the terminal determines a transmission priority rule of the SRS resource according to the time domain property of the SRS resource; or
And the terminal determines the transmission priority rule of the SRSresource according to the function configured by the SRS resource set to which the SRS resource belongs.
7. The method of claim 1, wherein at least one srsrsrsresource of the plurality of SRS resources configures 2 symbols or 4 symbols.
8. An apparatus for SRS resource transmission, the apparatus comprising: a processor and a transceiver:
the processor is configured to select SRS resources transmitted on the same symbol according to a transmission priority rule of srsresources if the configured SRS resources collide on the same symbol; transmitting the SRS resource on the same symbol.
9. The device of claim 8, wherein the processor is further configured to:
and aiming at any SRS resource, determining a symbol occupied by the SRS resource in a time slot according to an SRS physical layer resource mapping rule.
10. The device of claim 8, wherein the processor is specifically configured to:
and selecting the SRS resource with the highest transmission priority on the same symbol.
11. The device of claim 10, wherein the processor is further configured to:
only discarding SRSresources with non-highest transmission priorities in the plurality of SRS resources on the same symbol, and normally sending the SRSresources on the symbols without collision; or
Discarding SRS resources of the plurality of SRS resources that are not of a highest transmission priority over all symbols;
wherein the all symbols refer to symbols of a non-highest transmission priority srsrsresource configuration that collide in one slot.
12. The device of claim 11, wherein the processor is further configured to:
determining to adopt a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRS resources only on the same symbol according to the notification of the network side equipment, and normally transmitting on the symbols without collision or adopting a mode of discarding SRS resources with non-highest transmission priority in the plurality of SRS resources on all symbols; or
And determining to adopt a mode of discarding the SRS resource with the non-highest transmission priority in the plurality of SRS resources only on the same symbol or a mode of discarding the SRS resource with the non-highest transmission priority in the plurality of SRSresources on all symbols according to the terminal capability information.
13. The device of claim 8, wherein the processor is specifically configured to:
determining a transmission priority rule for SRS resource by:
determining a transmission priority rule of the SRS resource according to the time domain property of the SRS resource; or
And determining the transmission priority rule of the SRS resource according to the function of SRS resource set configuration to which the SRS resource belongs.
14. The apparatus of claim 8, wherein at least one srsrsrsresource of the plurality of SRS resources configures 2 symbols or 4 symbols.
15. An apparatus for SRS resource transmission, the apparatus comprising: at least one processing unit and at least one memory unit, wherein the memory unit stores program code which, when executed by the processing unit, causes the processing unit to perform the steps of the method of any of claims 1 to 7.
16. A computer storage medium having a computer program stored thereon, the program, when executed by a processor, implementing the steps of the method according to any one of claims 1 to 7.
CN201811108361.2A 2018-09-21 2018-09-21 SRS resource transmission method and device Pending CN110943813A (en)

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