CN110635874A - Method and device for triggering SRS transmission - Google Patents
Method and device for triggering SRS transmission Download PDFInfo
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- CN110635874A CN110635874A CN201810643424.8A CN201810643424A CN110635874A CN 110635874 A CN110635874 A CN 110635874A CN 201810643424 A CN201810643424 A CN 201810643424A CN 110635874 A CN110635874 A CN 110635874A
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W24/08—Testing, supervising or monitoring using real traffic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention relates to the field of communications, and in particular, to a method and an apparatus for triggering SRS transmission, which are used to obtain uplink channel quality information of a target BWP before BWP handover. The method comprises the following steps: when the base station determines that uplink channel quality measurement needs to be performed for the BWP, the base station sends DCI to the UE to trigger the UE to send SRS to the base station in a frequency domain range outside the currently active BWP in a measurement interval before switching the BWP, so that the base station can perform effective uplink channel quality measurement for the inactive BWP by using the received SRS, thereby achieving effective resource scheduling, transmission scheme selection, and the like, thereby greatly improving user experience, and simultaneously effectively reducing resource overhead of the measurement interval, and further reducing system load.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for triggering SRS transmission.
Background
In the Long Term Evolution (LTE) standard, aperiodic Sounding Reference Signal (SRS) transmission is indicated by Downlink control signaling (DCI) for scheduling data transmission.
In a New Radio Access Technology (NR) system, due to an increase in system BandWidth, in order to adapt BandWidth capabilities of different User terminals (UEs) and reduce energy consumption for UE detection, the NR system divides a plurality of BandWidth Segments (BWPs) in the system BandWidth.
In the 3GPP NR 15 standard, it is specified that only one active BWP can be used per UE at the same time. Meanwhile, in order to support more flexible bandwidth adaptation, a DCI-based BWP handover mechanism is supported in the NR standard, that is, a base station indicates to a UE that DCI is resource allocation scheduling for a currently active BWP or a target BWP through a BWP indication (indicator) bit field in the DCI. After receiving the DCI, if it is determined that the BWP identifier indicated by the BWP indicator bit field is not the currently active BWP, the UE performs BWP handover and transmits/receives data on the target BWP according to the scheduling information in the DCI.
The NR standard specifies that the SRS frequency domain transmission range of the UE is limited to the frequency domain range of the currently active BWP, i.e. the base station can only obtain the uplink channel quality information in the frequency domain range of the currently active BWP by measuring the SRS transmitted by the UE. When the base station triggers BWP handover by using DCI, it needs to schedule frequency domain resources on the target BWP, however, the base station cannot obtain the complete uplink channel quality information on the target BWP through the SRS transmitted on the currently activated BWP, and therefore, effective resource scheduling, transmission scheme selection, and the like cannot be achieved.
In view of the above, a new SRS transmission scheme is needed to overcome the above drawbacks.
Disclosure of Invention
The embodiment of the invention provides a method and a device for triggering SRS transmission, which are used for obtaining uplink channel quality information of a target BWP before switching the BWP.
A method for triggering Sounding Reference Signal (SRS) transmission is applied to a 5G new radio access technology (NR) system and comprises the following steps:
a method for triggering Sounding Reference Signal (SRS) transmission is applied to a 5G new radio access technology (NR) system and comprises the following steps:
a base station determines that uplink channel quality measurement needs to be carried out aiming at a bandwidth segment BWP;
and the base station sends downlink control signaling DCI to the UE, and triggers the UE to send SRS to the base station in the frequency domain range outside the current active BWP, wherein the SRS is used for carrying out uplink channel quality measurement on the frequency domain range outside the current active BWP.
Optionally, the determining, by the base station, that uplink channel quality measurement needs to be performed for BWP includes:
the base station judges the data volume of the data to be transmitted aiming at the UE, and when the data volume is not matched with the bandwidth of the current activated BWP used by the UE, the base station determines that the uplink channel quality measurement aiming at the BWP is needed; or
And when the base station judges that the uplink channel quality measurement is not executed for more than the set time length, determining that the uplink channel quality measurement needs to be carried out aiming at the BWP.
Optionally, the DCI sent by the base station and the DCI used by the base station for uplink data scheduling use the same signaling format.
Optionally, in the DCI, the bandwidth indication BWP indicator bit field is used to indicate an identifier of a target BWP, and the sounding reference signal requests the SRS request bit field to indicate configuration information of an SRS.
Optionally, in the DCI sent by the base station, one or more bit fields adopt a preset specific sequence, where the specific sequence is a sequence in which a predetermined function is set in advance, and the specific sequences adopted in different bit fields are the same or different.
Optionally, the one or more bit fields are one or any combination of the following bit fields:
a frequency domain resource allocation bit field, a modulation and coding scheme bit field, a redundancy version bit field, a new data indication bit field, and a hybrid automatic repeat request process number bit field.
Optionally, in the DCI sent by the base station, the time domain resource allocation bit field is set to be a specific sequence or an effective bit sequence, and is configured to indicate a time domain resource position where the UE performs SRS transmission, where the specific sequence is a sequence in which a corresponding time-frequency resource position is set in advance, and the effective bit sequence is used to directly indicate the corresponding time domain resource position.
Optionally, in the DCI sent by the base station, the transmission power control bit field is used to dynamically indicate the transmission power of the SRS.
Optionally, the SRS is a periodic SRS, or an aperiodic SRS.
A method for triggering SRS transmission is applied to a 5G new radio access technology (NR) system and comprises the following steps:
a user terminal UE receives a downlink control instruction DCI sent by a base station, wherein the DCI is sent when the base station determines that uplink channel quality measurement needs to be carried out aiming at a bandwidth segment BWP;
and the UE transmits an SRS to the base station in the frequency domain range outside the current active BWP based on the DCI, wherein the SRS is used for carrying out uplink channel quality measurement on the frequency domain range outside the current active BWP.
Optionally, the DCI received by the UE and the DCI used by the base station for uplink data scheduling use the same signaling format.
Optionally, in the DCI, the bandwidth indication BWP indicator bit field is used to indicate an identifier of a target BWP, and the sounding reference signal requests the SRS request bit field to indicate configuration information of an SRS.
Optionally, in the DCI, one or more bit fields adopt a preset specific sequence, where the specific sequence is a sequence in which a specific function is preset correspondingly, and the specific sequences adopted among different bit fields are the same or different.
Optionally, the one or more bit fields are one or any combination of the following bit fields:
a frequency domain resource allocation bit field, a modulation and coding scheme bit field, a redundancy version bit field, a new data indication bit field, and a hybrid automatic repeat request process number bit field.
Optionally, in the DCI, the time domain resource allocation bit field is set to be a specific sequence or an effective bit sequence, and is configured to indicate a time domain resource position where the UE performs SRS transmission, where the specific sequence is a sequence in which a corresponding time-frequency resource position is set in advance, and the effective bit sequence is used to directly indicate the corresponding time domain resource position.
Optionally, in the DCI, the transmission power control bit field is used to dynamically indicate the transmission power of the SRS.
Optionally, the SRS is a periodic SRS, or an aperiodic SRS.
An apparatus for triggering SRS transmission, applied to a 5G new radio access technology (NR) system, comprises:
a determining unit, configured to determine that uplink channel quality measurement needs to be performed for a bandwidth segment BWP;
and the processing unit is used for sending downlink control signaling DCI to the UE and triggering the UE to send SRS to the base station in the frequency domain range outside the current active BWP, wherein the SRS is used for measuring the uplink channel quality of the frequency domain range outside the current active BWP.
Optionally, when determining that uplink channel quality measurement needs to be performed for BWP, the determining unit is configured to:
determining the data volume of the data to be transmitted aiming at the UE, and determining that the uplink channel quality measurement needs to be carried out aiming at the BWP when the data volume is not matched with the bandwidth of the current active BWP used by the UE; or
And when judging that the uplink channel quality measurement is not executed beyond the set duration, determining that the uplink channel quality measurement needs to be carried out aiming at the BWP.
Optionally, the DCI sent by the processing unit and the DCI for uplink data scheduling use the same signaling format.
Optionally, in the DCI, the bandwidth indication BWP indicator bit field is used to indicate an identifier of a target BWP, and the sounding reference signal requests the SRS request bit field to indicate configuration information of an SRS.
Optionally, in the DCI sent by the processing unit, one or more bit fields adopt a preset specific sequence, where the specific sequence is a sequence in which a predetermined function is set in advance, and the specific sequences adopted in different bit fields are the same or different.
Optionally, the one or more bit fields are one or any combination of the following bit fields:
a frequency domain resource allocation bit field, a modulation and coding scheme bit field, a redundancy version bit field, a new data indication bit field, and a hybrid automatic repeat request process number bit field.
Optionally, in the DCI sent by the processing unit, a time domain resource allocation bit field is set to be a specific sequence or an effective bit sequence, and is configured to indicate a time domain resource position where the UE performs SRS transmission, where the specific sequence is a sequence in which a corresponding time-frequency resource position is set in advance, and the effective bit sequence is used to directly indicate the corresponding time domain resource position.
Optionally, in the DCI sent by the processing unit, a transmission power control bit field is used to dynamically indicate a transmission power of an SRS.
Optionally, the SRS is a periodic SRS, or an aperiodic SRS.
An apparatus for triggering SRS transmission, applied to a 5G new radio access technology (NR) system, comprises:
a receiving unit, configured to receive, by a UE, a DCI sent by a base station, where the DCI is sent by the base station when the base station determines that uplink channel quality measurement needs to be performed for a bandwidth segment BWP;
and a sending unit, configured to send, to the base station, an SRS in a frequency domain range outside a currently active BWP based on the DCI, where the SRS is used to perform uplink channel quality measurement on the frequency domain range outside the currently active BWP.
Optionally, the DCI received by the receiving unit and the DCI used by the base station for uplink data scheduling use the same signaling format.
Optionally, in the DCI, the bandwidth indication BWP indicator bit field is used to indicate an identifier of a target BWP, and the sounding reference signal requests the SRS request bit field to indicate configuration information of an SRS.
Optionally, in the DCI, one or more bit fields adopt a preset specific sequence, where the specific sequence is a sequence in which a specific function is preset correspondingly, and the specific sequences adopted among different bit fields are the same or different.
Optionally, the one or more bit fields are one or any combination of the following bit fields:
a frequency domain resource allocation bit field, a modulation and coding scheme bit field, a redundancy version bit field, a new data indication bit field, and a hybrid automatic repeat request process number bit field.
Optionally, in the DCI, the time domain resource allocation bit field is set to be a specific sequence or an effective bit sequence, and is configured to indicate a time domain resource position where the UE performs SRS transmission, where the specific sequence is a sequence in which a corresponding time-frequency resource position is set in advance, and the effective bit sequence is used to directly indicate the corresponding time domain resource position.
Optionally, in the DCI, the transmission power control bit field is used to dynamically indicate the transmission power of the SRS.
Optionally, the SRS is a periodic SRS, or an aperiodic SRS.
A storage medium storing a program for implementing triggering sounding reference signal, SRS, transmission, which when executed by a processor performs the steps of:
determining that uplink channel quality measurement needs to be carried out on a bandwidth segment BWP;
and sending downlink control signaling DCI to the UE, and triggering the UE to send SRS to the base station in the frequency domain range outside the current active BWP, wherein the SRS is used for carrying out uplink channel quality measurement on the frequency domain range outside the current active BWP.
A communications apparatus comprising one or more processors; and
one or more computer-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform any of the methods performed by the base station described above.
A storage medium storing a program for implementing triggering sounding reference signal, SRS, transmission, which when executed by a processor performs the steps of:
receiving a downlink control instruction DCI sent by a base station, wherein the DCI is sent when the base station determines that uplink channel quality measurement needs to be carried out aiming at a bandwidth segment BWP;
and based on the DCI, sending an SRS to the base station in the frequency domain range outside the current active BWP, wherein the SRS is used for carrying out uplink channel quality measurement on the frequency domain range outside the current active BWP.
A communications apparatus comprising one or more processors; and
one or more computer-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform any of the methods performed by the UE described above.
The invention has the following beneficial effects:
in the embodiment of the invention, when the base station determines that uplink channel quality measurement needs to be performed for the BWP, the base station sends DCI to the UE to trigger the UE to send SRS to the base station in a frequency domain range except the current active BWP in a measurement interval before switching the BWP, so that the base station can use the received SRS to perform effective uplink channel quality measurement on the inactive BWP, thereby realizing effective resource scheduling, transmission scheme selection and the like, greatly improving user experience, simultaneously effectively reducing resource overhead of the measurement interval and further reducing system load.
Drawings
Fig. 1 is a schematic diagram of a triggered SRS transmission process according to an embodiment of the present invention;
FIGS. 2, 3, 4 and 5 are schematic diagrams of bit fields in DCI according to an embodiment of the present invention;
FIG. 6 is a functional block diagram of a base station according to an embodiment of the present invention;
fig. 7 is a functional structure diagram of a UE in an embodiment of the present invention.
Detailed Description
In order to successfully obtain the uplink channel quality information of the target BWP when BWP handover is required, in the embodiment of the present invention, in the 5G NR system, when the base station determines that the UE needs to perform BWP handover, the base station sends DCI to the UE and triggers the UE to send SRS in a frequency domain range outside the currently activated BWP, so that the base station performs uplink channel quality measurement on the frequency domain range outside the currently activated BWP based on the obtained SRS, thereby selecting an appropriate target BWP for handover.
Optionally, the SRS is a periodic SRS or an aperiodic SRS, and preferably, the aperiodic SRS may be selected, and details will not be described in the following embodiments.
Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, in the embodiment of the present invention, in the 5G NR system, a detailed flow of the base station triggering SRS transmission is as follows:
step 100: the base station determines that uplink channel quality measurements need to be made for BWP.
In the embodiment of the present invention, when step 100 is executed, at least the following two cases are included but not limited to:
the first case is: when the base station judges that the data volume of the data to be transmitted aiming at the UE is not matched with the bandwidth of the current activated BWP used by the UE, the base station determines that the uplink channel quality measurement aiming at the BWP is needed.
At this time, the currently active BWP used by the UE already meets the transmission requirement of the data to be transmitted, and needs to find a new target BWP.
For example, assume that BWP1 has a bandwidth less than BWP2, and the currently active BWP used by the UE is BWP1,
Then, when the base station determines that the base station will interact with the UE in the subsequent flow (the base station may actively send a large amount of data to the UE, or the UE may report a large amount of data to the base station), the base station may determine to switch the indication UE from BWP1 to BWP2, so that the UE can successfully complete data interaction using sufficient bandwidth resources.
Accordingly, after the UE is switched to BWP2, when the bs determines that the bs will not interact with the UE with a large amount of data in the subsequent flow for a certain period of time, the bs may determine to switch the UE from BWP2 to BWP1, so that the power consumption of the UE may be effectively reduced.
The second case is: and when the base station judges that the uplink channel quality measurement is not carried out for more than the set time length, determining that the uplink channel quality measurement needs to be carried out aiming at the BWP.
In this case, the current service condition of the UE may be stable, and BWP handover does not need to be performed immediately, but the base station only detects the uplink channel quality of the inactive BWP periodically, and if a more ideal inactive BWP is found, the UE may also be notified to perform BWP handover, or of course, the specific operation may be configured flexibly according to the application environment in order to ensure the service stability without performing BWP handover, which is not described herein again.
Step 120: and the base station sends DCI to the UE, and triggers the UE to send SRS to the base station in the frequency domain range outside the current active BWP, wherein the SRS is used for carrying out uplink channel quality measurement on the frequency domain range outside the current active BWP.
The base station sends DCI to the UE, where the DCI does not carry identification information of a target BWP, and the UE may determine that the base station is to instruct itself to perform BWP handover when receiving such DCI, and currently enters a dedicated measurement gap (measurement gap) for sending an aperiodic SRS outside a frequency domain range of a currently active BWP (i.e., on all inactive BWPs).
In this way, before formally instructing the UE to perform BWP handover, the base station may perform uplink channel quality measurement on the frequency domain outside the currently active BWP (i.e. for all inactive BWPs) based on the SRS transmitted by the UE in the measurement interval, so as to select an appropriate target BWP and corresponding transmission scheme.
By using the DCI to trigger SRS transmission outside the frequency domain range of the currently activated BWP, the resource overhead of the measurement interval can be effectively reduced.
Optionally, the DCI for triggering SRS transmission on the inactive BWP sent by the base station is consistent with the signaling format of the DCI for uplink data scheduling, that is, the DCI and the signaling format are the same, so that the existing interactive process does not need to be modified greatly.
Of course, the base station may also redesign the dedicated signaling format for the DCI triggering SRS transmission on the inactive BWP, which is not described herein again.
Optionally, the base station sends the DCI for triggering SRS transmission in step 120, where the BWPindicator bit field is used to indicate an identifier of a target BWP, and the SRS request bit field is used to indicate configuration information of an SRS.
In the embodiment of the present invention, before receiving the SRS transmitted by the UE on the inactive BWP, the base station may also indicate the target BWP to the UE through the BWP indicator bit field, so that the UE may preferentially select the frequency domain range of the target BWP for transmission when transmitting the SRS signal, and further, if the uplink channel quality on the target BWP meets the requirement, the UE may not transmit the SRS on other inactive BWPs, so as to further reduce the operation load of the UE and avoid wasting system resources. On the other hand, the SRS request bit field is used to indicate the configuration information of the SRS, and may include the SRS transmission power configured semi-statically, the bandwidth range of the SRS transmission, the designated sequence configuration adopted by the SRS, and the like.
Optionally, in the DCI for triggering SRS transmission sent by the base station in step 120, one or more bit fields adopt a preset specific sequence, where the specific sequence is a sequence in which a predetermined function is set in advance, and the specific sequences adopted in different bit fields are the same or different.
For example, a bit field adopts all 1 specific sequences of "11111", and the base station and the UE may pre-agree with a specific function represented by such specific sequence, so that the UE can perform the corresponding specific function after parsing the bit field from the DCI.
The correspondence between the specific sequence and the designated function can be flexibly configured according to a specific application environment, and is not described herein again.
Further, the one or more bit fields are one or any combination of the following bit fields:
a frequency domain resource allocation bit field, a Modulation and Coding Scheme (MCS) bit field, a Redundancy Version (RV) bit field, a New Data Indicator (NDI) bit field, a Hybrid Automatic repeat request (HARQ) process number (HARQ) bit field.
Optionally, in the DCI for triggering SRS transmission sent by the base station in step 120, the time domain resource allocation bit field is set to a specific sequence or an effective bit sequence, and is used to indicate a time domain resource position for SRS transmission by the UE. The special bit sequence is a sequence with a corresponding time-frequency resource position set in advance, and the effective bit sequence is used for directly indicating a corresponding time-domain resource position.
And when the UE receives the DCI and determines that a time domain resource allocation bit domain carried by the DCI is a specific sequence, the UE sends an SRS signal at a fixed time domain resource position corresponding to the specific sequence. The time-domain resource location and the DCI timing relationship may be set in a standard or configured through RRC signaling.
And when the UE receives the DCI and determines that the time domain resource allocation bit field is an effective bit sequence, the UE transmits an SRS signal at the time domain resource position indicated by the DCI.
Optionally, in the DCI for triggering SRS transmission sent in step 120, the base station uses a Transmission Power Control (TPC) bit field to dynamically indicate the SRS transmission power.
The above embodiments are further described in detail with reference to specific application scenarios.
Scene 1:
as shown in fig. 2 (for example only), the DCI for triggering SRS transmission is shown. The frequency domain resource allocation bit domain is configured as a specific sequence of all 1 s.
After detecting the DCI, the UE transmits an SRS on a target BWP indicated by a BWP indicator bit field, where configuration information of the SRS is obtained through an SRS request bit field. The values of other bit fields in the DCI do not affect the SRS triggering operation and the SRS configuration.
Scene 2:
referring to fig. 3, for example only, in DCI for triggering SRS transmission, a frequency domain resource allocation bit field is configured as a specific sequence of all 1's and an MCS bit field is configured as a specific sequence of all 0's.
After detecting the DCI, the UE transmits an SRS on a target BWP indicated by a BWP indicator bit field, where configuration information of the SRS is obtained through an SRS request bit field. The values of other bit fields in the DCI do not affect the SRS triggering operation and the SRS configuration.
Scene 3:
referring to fig. 4, for example only, in DCI for triggering SRS transmission, a frequency domain resource allocation bit field is configured as a specific sequence of all 1 s, an MCS bit field is configured as a specific sequence of all 0 s, and a time domain resource allocation bit field includes a valid bit sequence.
After the UE detects the DCI, the UE transmits an SRS on a target BWP indicated by a BWP indicator bit field, the configuration information of the SRS is obtained through an SRS request bit field, and the specific transmission time slot of the SRS is indicated through a time domain resource allocation bit field.
The values of other bit fields in the DCI do not affect the SRS triggering operation and the SRS configuration.
Scene 4:
referring to fig. 5, in DCI for triggering SRS transmission, a frequency domain resource allocation bit field is configured as a specific sequence of all 1 s, an MCS bit field is configured as a specific sequence of all 0 s, a time domain resource allocation bit field includes a valid bit sequence, and a TPC bit field includes a valid bit sequence.
After the UE detects the DCI, the UE sends an SRS on a target BWP indicated by a BWP indicator bit field, the configuration information of the SRS is obtained through an SRS request bit field, the specific sending time slot of the SRS is indicated through a time domain resource allocation bit field, and the sending power adjustment of the SRS is dynamically indicated through a TPC bit field.
The values of other bit fields in the DCI do not affect the SRS triggering operation and the SRS configuration.
Based on the above embodiments, referring to fig. 6, in the embodiment of the present invention, the base station at least includes a determining unit 60 and a processing unit 61, wherein,
a determining unit 60, configured to determine that uplink channel quality measurement needs to be performed for BWP;
a processing unit 61, configured to send a downlink control signaling DCI to the UE, and trigger the UE to send an SRS to the base station in a frequency domain range outside a currently activated BWP, where the SRS is used to perform uplink channel quality measurement on the frequency domain range outside the currently activated BWP.
Optionally, when determining that uplink channel quality measurement needs to be performed for BWP, the determining unit 60 is configured to:
determining the data volume of the data to be transmitted aiming at the UE, and determining that the uplink channel quality measurement needs to be carried out aiming at the BWP when the data volume is not matched with the bandwidth of the current active BWP used by the UE; or
And when judging that the uplink channel quality measurement is not executed beyond the set duration, determining that the uplink channel quality measurement needs to be carried out aiming at the BWP.
Optionally, the DCI sent by the determining unit 60 and the DCI for uplink data scheduling use the same signaling format.
Optionally, in the DCI, the bandwidth indication BWP indicator bit field is used to indicate an identifier of a target BWP, and the sounding reference signal requests the SRS request bit field to indicate configuration information of an SRS.
Optionally, in the DCI sent by the determining unit 60, one or more bit fields adopt a preset specific sequence, where the specific sequence is a sequence in which a predetermined function is preset correspondingly, and the specific sequences adopted in different bit fields are the same or different.
Optionally, the one or more bit fields are one or any combination of the following bit fields:
a frequency domain resource allocation bit field, a modulation and coding scheme bit field, a redundancy version bit field, a new data indication bit field, and a hybrid automatic repeat request process number bit field.
Optionally, in the DCI sent by the determining unit 60, a time domain resource allocation bit field is set as a specific sequence or an effective bit sequence, and is configured to indicate a time domain resource position where the UE performs SRS transmission, where the specific sequence is a sequence in which a corresponding time-frequency resource position is set in advance, and the effective bit sequence is used to directly indicate the corresponding time domain resource position.
Optionally, in the DCI transmitted by the determining unit 60, a transmission power control bit field is used to dynamically indicate the transmission power of an SRS.
Optionally, the SRS is a periodic SRS, or an aperiodic SRS.
Based on the above embodiments, referring to fig. 7, in the embodiment of the present invention, the UE at least includes a receiving unit 70 and a transmitting unit 71, wherein,
a receiving unit 70, configured to receive a downlink control instruction DCI sent by a base station, where the DCI is sent when the base station determines that uplink channel quality measurement needs to be performed for a bandwidth segment BWP;
a sending unit 71, configured to send, to the base station, an SRS in a frequency domain range outside the currently active BWP based on the DCI, where the SRS is used to perform uplink channel quality measurement on the frequency domain range outside the currently active BWP.
Optionally, the DCI received by the UE and the DCI used by the base station for uplink data scheduling use the same signaling format.
Optionally, in the DCI, the bandwidth indication BWP indicator bit field is used to indicate an identifier of a target BWP, and the sounding reference signal requests the SRS request bit field to indicate configuration information of an SRS.
Optionally, in the DCI, one or more bit fields adopt a preset specific sequence, where the specific sequence is a sequence in which a specific function is preset correspondingly, and the specific sequences adopted among different bit fields are the same or different.
Optionally, the one or more bit fields are one or any combination of the following bit fields:
a frequency domain resource allocation bit field, a modulation and coding scheme bit field, a redundancy version bit field, a new data indication bit field, and a hybrid automatic repeat request process number bit field.
Optionally, in the DCI, the time domain resource allocation bit field is set to be a specific sequence or an effective bit sequence, and is configured to indicate a time domain resource position where the UE performs SRS transmission, where the specific sequence is a sequence in which a corresponding time-frequency resource position is set in advance, and the effective bit sequence is used to directly indicate the corresponding time domain resource position.
Optionally, in the DCI, the transmission power control bit field is used to dynamically indicate the transmission power of the SRS.
Optionally, the SRS is a periodic SRS, or an aperiodic SRS.
In summary, in the embodiments of the present invention, when it is determined that uplink channel quality is not to be measured for BWP, the base station sends DCI to the UE, and triggers the UE to send SRS to the base station in a frequency domain range outside the currently active BWP in a measurement interval before BWP is switched, so that the base station can use the received SRS to perform effective uplink channel quality measurement for the inactive BWP, thereby achieving effective resource scheduling, transmission scheme selection, and the like, thereby greatly improving user experience, and also effectively reducing resource overhead of the measurement interval, thereby reducing system load.
On the other hand, the DCI triggering the UE to transmit the SRS at the measurement interval and the DCI for uplink data scheduling adopt the same signaling format, and at the same time, the DCI may be indicated to be used for the conventional data or trigger SRS transmission by an implicit value (i.e., a specific sequence) of a DCI specific bit field, so that the UE blind detection complexity and overhead may be reduced to a certain extent.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, 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, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments 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 encompass such modifications and variations.
Claims (23)
1. A method for triggering Sounding Reference Signal (SRS) transmission, applied to a 5G new radio access technology (NR) system, includes:
a base station determines that uplink channel quality measurement needs to be carried out aiming at a bandwidth segment BWP;
and the base station sends downlink control signaling DCI to the UE, and triggers the UE to send SRS to the base station in the frequency domain range outside the current active BWP, wherein the SRS is used for carrying out uplink channel quality measurement on the frequency domain range outside the current active BWP.
2. The method of claim 1, wherein the base station determining that uplink channel quality measurements are needed for BWP, comprises:
the base station judges the data volume of the data to be transmitted aiming at the UE, and when the data volume is not matched with the bandwidth of the current activated BWP used by the UE, the base station determines that the uplink channel quality measurement aiming at the BWP is needed; or
And when the base station judges that the uplink channel quality measurement is not executed for more than the set time length, determining that the uplink channel quality measurement needs to be carried out aiming at the BWP.
3. The method of claim 1, wherein the DCI transmitted by a base station and the DCI used by the base station for uplink data scheduling are in the same signaling format.
4. The method of claim 1, 2 or 3, wherein in the DCI, a bandwidth indication (BWP) indicator bit field is used for indicating an identification of a target BWP, and a Sounding Reference Signal (SRS) request bit field is used for indicating configuration information of an SRS.
5. The method of claim 1, 2 or 3, wherein one or more bit fields in the DCI transmitted by the base station use a predetermined specific sequence, the specific sequence is a sequence with a predetermined corresponding designated function, and the specific sequences used in different bit fields are the same or different.
6. The method of claim 5, wherein the one or more bit-fields are one or any combination of the following bit-fields:
a frequency domain resource allocation bit field, a modulation and coding scheme bit field, a redundancy version bit field, a new data indication bit field, and a hybrid automatic repeat request process number bit field.
7. The method of claim 1, 2 or 3, wherein in the DCI sent by a base station, a time domain resource allocation bit field is set to a specific sequence or a valid bit sequence for indicating a time domain resource location for SRS transmission by the UE, the specific sequence is a sequence with a corresponding time-frequency resource location set in advance, and the valid bit sequence is used for directly indicating the corresponding time domain resource location.
8. The method of claim 1, 2 or 3, wherein in the DCI transmitted by the base station, a transmission power control bit field is used for dynamically indicating the transmission power of the SRS.
9. The method of claim 1, 2 or 3, wherein the SRS is a periodic SRS or an aperiodic SRS.
10. A method for triggering Sounding Reference Signal (SRS) transmission, applied to a 5G new radio access technology (NR) system, includes:
a user terminal UE receives a downlink control instruction DCI sent by a base station, wherein the DCI is sent when the base station determines that uplink channel quality measurement needs to be carried out aiming at a bandwidth segment BWP;
and the UE transmits an SRS to the base station in the frequency domain range outside the current active BWP based on the DCI, wherein the SRS is used for carrying out uplink channel quality measurement on the frequency domain range outside the current active BWP.
11. The method of claim 10, wherein the DCI received by the UE is in the same signaling format as DCI used by the base station for uplink data scheduling.
12. The method of claim 10 or 11, wherein in the DCI, a bandwidth indication (BWP) indicator bit field is used to indicate an identification of a target BWP, and a Sounding Reference Signal (SRS) request bit field is used to indicate configuration information of an SRS.
13. The method of claim 10 or 11, wherein one or more bit fields in the DCI adopt a predetermined specific sequence, the specific sequence is a sequence in which a specific function is previously set, and the specific sequences adopted between different bit fields are the same or different.
14. The method of claim 13, wherein the one or more bit-fields are one or any combination of the following bit-fields:
a frequency domain resource allocation bit field, a modulation and coding scheme bit field, a redundancy version bit field, a new data indication bit field, and a hybrid automatic repeat request process number bit field.
15. The method of claim 10 or 11, wherein in the DCI, a time domain resource allocation bit field is set to a specific sequence or a valid bit sequence for indicating a time domain resource location for SRS transmission by the UE, the specific sequence is a sequence with a corresponding time-frequency resource location set in advance, and the valid bit sequence is used for directly indicating the corresponding time domain resource location.
16. The method of claim 10 or 11, wherein a transmission power control bit field is used to dynamically indicate the transmission power of SRS in the DCI.
17. The method of claim 10 or 11, wherein the SRS is a periodic SRS or an aperiodic SRS.
18. An apparatus for triggering Sounding Reference Signal (SRS) transmission, applied to a 5G new radio access technology (NR) system, comprising:
a determining unit, configured to determine that uplink channel quality measurement needs to be performed for a bandwidth segment BWP;
and the processing unit is used for sending downlink control signaling DCI to the UE and triggering the UE to send SRS to the base station in the frequency domain range outside the current active BWP, wherein the SRS is used for measuring the uplink channel quality of the frequency domain range outside the current active BWP.
19. An apparatus for triggering Sounding Reference Signal (SRS) transmission, applied to a 5G new radio access technology (NR) system, comprising:
a receiving unit, configured to receive, by a UE, a DCI sent by a base station, where the DCI is sent by the base station when the base station determines that uplink channel quality measurement needs to be performed for a bandwidth segment BWP;
and a sending unit, configured to send, to the base station, an SRS in a frequency domain range outside a currently active BWP based on the DCI, where the SRS is used to perform uplink channel quality measurement on the frequency domain range outside the currently active BWP.
20. A storage medium storing a program for implementing triggering of sounding reference signal, SRS, transmission, the program, when executed by a processor, performing the steps of:
determining that uplink channel quality measurement needs to be carried out on a bandwidth segment BWP;
and sending downlink control signaling DCI to the UE, and triggering the UE to send SRS to the base station in the frequency domain range outside the current active BWP, wherein the SRS is used for carrying out uplink channel quality measurement on the frequency domain range outside the current active BWP.
21. A communications apparatus comprising one or more processors; and
one or more computer-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the method of any of claims 1-8.
22. A storage medium storing a program for implementing triggering of sounding reference signal, SRS, transmission, the program, when executed by a processor, performing the steps of:
receiving a downlink control instruction DCI sent by a base station, wherein the DCI is sent when the base station determines that uplink channel quality measurement needs to be carried out aiming at a bandwidth segment BWP;
and based on the DCI, sending an SRS to the base station in the frequency domain range outside the current active BWP, wherein the SRS is used for carrying out uplink channel quality measurement on the frequency domain range outside the current active BWP.
23. A communications apparatus comprising one or more processors; and
one or more computer-readable media having instructions stored thereon that, when executed by the one or more processors, cause the apparatus to perform the method of any of claims 9-15.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021174497A1 (en) * | 2020-03-05 | 2021-09-10 | 华为技术有限公司 | Method for determining uplink bandwidth, and communication apparatus |
| CN113708902A (en) * | 2020-05-21 | 2021-11-26 | 上海诺基亚贝尔股份有限公司 | Channel information reporting for dormant bandwidth segments |
| CN113965995A (en) * | 2020-07-20 | 2022-01-21 | 中国电信股份有限公司 | Partial bandwidth selection method, system and base station |
| WO2022021131A1 (en) * | 2020-07-29 | 2022-02-03 | Oppo广东移动通信有限公司 | Initial bandwidth part (bwp) reselection method, terminal device, and network device |
| WO2022027238A1 (en) * | 2020-08-04 | 2022-02-10 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device, and network device |
| WO2022253150A1 (en) * | 2021-05-31 | 2022-12-08 | 华为技术有限公司 | Data transmission method and apparatus |
| RU2809833C1 (en) * | 2020-06-16 | 2023-12-19 | Бейдзин Сяоми Мобайл Софтвэр Ко., Лтд. | Wireless communication method and device, terminal, storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010178129A (en) * | 2009-01-30 | 2010-08-12 | Sharp Corp | Base station apparatus, mobile station apparatus, wireless communication system and reference signal transmission method of the same |
| CN107889256A (en) * | 2016-09-30 | 2018-04-06 | 北京信威通信技术股份有限公司 | A kind of method and device of dispatching uplink resource |
| CN107911203A (en) * | 2017-08-11 | 2018-04-13 | 华为技术有限公司 | Send and receive method, the network equipment, terminal device and the system of reference signal |
-
2018
- 2018-06-21 CN CN201810643424.8A patent/CN110635874B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010178129A (en) * | 2009-01-30 | 2010-08-12 | Sharp Corp | Base station apparatus, mobile station apparatus, wireless communication system and reference signal transmission method of the same |
| CN107889256A (en) * | 2016-09-30 | 2018-04-06 | 北京信威通信技术股份有限公司 | A kind of method and device of dispatching uplink resource |
| CN107911203A (en) * | 2017-08-11 | 2018-04-13 | 华为技术有限公司 | Send and receive method, the network equipment, terminal device and the system of reference signal |
Non-Patent Citations (12)
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021174497A1 (en) * | 2020-03-05 | 2021-09-10 | 华为技术有限公司 | Method for determining uplink bandwidth, and communication apparatus |
| CN113615116A (en) * | 2020-03-05 | 2021-11-05 | 华为技术有限公司 | Method and communication device for determining uplink bandwidth |
| CN113708902A (en) * | 2020-05-21 | 2021-11-26 | 上海诺基亚贝尔股份有限公司 | Channel information reporting for dormant bandwidth segments |
| RU2809833C1 (en) * | 2020-06-16 | 2023-12-19 | Бейдзин Сяоми Мобайл Софтвэр Ко., Лтд. | Wireless communication method and device, terminal, storage medium |
| CN113965995A (en) * | 2020-07-20 | 2022-01-21 | 中国电信股份有限公司 | Partial bandwidth selection method, system and base station |
| WO2022021131A1 (en) * | 2020-07-29 | 2022-02-03 | Oppo广东移动通信有限公司 | Initial bandwidth part (bwp) reselection method, terminal device, and network device |
| WO2022027238A1 (en) * | 2020-08-04 | 2022-02-10 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device, and network device |
| WO2022253150A1 (en) * | 2021-05-31 | 2022-12-08 | 华为技术有限公司 | Data transmission method and apparatus |
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