CN115361743A - Bandwidth part switching method and device and communication equipment - Google Patents
Bandwidth part switching method and device and communication equipment Download PDFInfo
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- CN115361743A CN115361743A CN202211125081.9A CN202211125081A CN115361743A CN 115361743 A CN115361743 A CN 115361743A CN 202211125081 A CN202211125081 A CN 202211125081A CN 115361743 A CN115361743 A CN 115361743A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
Abstract
The invention provides a method and a device for switching a wide section of a band and communication equipment, and belongs to the technical field of wireless communication. The method for switching the bandwidth part is applied to the terminal and comprises the following steps: when configuring a plurality of sending receiving points TRP for the terminal on the network side, the terminal respectively performs bandwidth part BWP switching according to the indication information of a plurality of TRP, or performs bandwidth part BWP switching according to the indication information of one TRP, or performs static BWP switching, or does not respond to dynamic BWP switching. The technical scheme of the embodiment of the invention can ensure the normal transmission of data when a plurality of TRPs are configured for the terminal at the network side.
Description
The application is a divisional application of Chinese patent application No.201910009154.
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for switching a bandwidth portion, and a communication device.
Background
3GPP release 15 (Rel-15) proposes a scenario of multiple transmit receive points/multiple antenna panels (multi-TRP/multi-panel), where multiple TRP transmissions can increase the reliability and throughput performance of the transmissions, e.g., a terminal (UE) can receive the same data or different data from multiple TRPs. The multiple TRP transmission scene comprises the following steps: as shown in fig. 1, multiple antenna panel transmissions within the same TRP; as shown in fig. 2, multiple TRP/panel transmission between multiple TRPs, ideal backhaul; as shown in fig. 3, multiple TRP/panel transmission between multiple TRPs, a non-ideal backhaul.
When non-ideal Backhaul exists between two TRPs, certain time delay exists in communication between the TRPs, and when one TRP can not timely inform the other TRP in switching BWP, the problem that data transmission can not be normally carried out can occur; and when the BWP switching indicated by a plurality of TRPs has conflict, the problem that the data transmission can not be normally carried out can also occur.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and an apparatus for switching a bandwidth portion, and a communication device, which can ensure normal transmission of data when a plurality of TRPs are configured for a terminal on a network side.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
in a first aspect, an embodiment of the present invention provides a method for switching a wide-band part, which is applied to a terminal, and includes:
when configuring a plurality of sending receiving points TRP for the terminal on the network side, the terminal respectively performs bandwidth part BWP switching according to the indication information of a plurality of TRP, or performs bandwidth part BWP switching according to the indication information of one TRP, or performs static BWP switching, or does not respond to dynamic BWP switching.
In a second aspect, an embodiment of the present invention provides a bandwidth part switching method, applied to a network side device, including:
configuring a plurality of sending and receiving points (TRPs) for a terminal, and indicating the terminal to perform bandwidth part (BWP) switching through one TRP in the plurality of TRPs; or respectively instructing the terminal to perform BWP handover through the plurality of TRPs.
In a third aspect, an embodiment of the present invention provides a wide-band part switching device, applied to a terminal, including:
and the processing module is used for respectively performing bandwidth part BWP switching according to the indication information of a plurality of TRPs when the network side configures a plurality of sending and receiving points TRP for the terminal, or performing bandwidth part BWP switching according to the indication information of one TRP, or performing static BWP switching, or not responding to dynamic BWP switching.
In a fourth aspect, an embodiment of the present invention provides a wide-band part switching device, which is applied to a network side device, and includes:
a configuration module, configured to configure multiple TRPs for a terminal, and instruct the terminal to perform BWP handover of a bandwidth part through one of the multiple TRPs; or respectively instructing the terminal to perform BWP handover through the plurality of TRPs.
In a fifth aspect, an embodiment of the present invention provides a communication device, including: memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method for bandwidth partial switching as described above.
In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps in the bandwidth part switching method as described above.
The embodiment of the invention has the following beneficial effects:
in the above solution, when the network configures a plurality of TRPs for the terminal, the terminal performs BWP switching of bandwidth parts according to the indication information of the plurality of TRPs, or performs BWP switching of bandwidth parts according to the indication information of only one of the TRPs, or performs static BWP switching, or does not respond to dynamic BWP switching, so as to avoid collision of BWP switching and ensure normal transmission of data.
Drawings
Fig. 1-3 are schematic diagrams of multiple TRP transmission scenarios;
fig. 4 is a flowchart illustrating a method for switching a bandwidth part of a terminal according to an embodiment of the present invention;
fig. 5 is a schematic flowchart of a method for switching a bandwidth part of a network device according to an embodiment of the present invention;
fig. 6 is a block diagram of a bandwidth part switching apparatus applied to a terminal according to an embodiment of the present invention;
fig. 7 is a block diagram of a bandwidth part switching apparatus applied to a network side device according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a network device according to an embodiment of the present invention;
fig. 9 is a schematic composition diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
Embodiments of the present invention provide a method and an apparatus for switching a bandwidth portion, and a communication device, which can ensure normal transmission of data when a plurality of TRPs are configured for a terminal on a network side.
An embodiment of the present invention provides a method for switching a wide-band part, which is applied to a terminal, and as shown in fig. 4, the method includes:
step 101: when a network side configures a plurality of sending receiving points TRP for the terminal, the terminal respectively performs bandwidth part BWP switching according to the indication information of a plurality of TRP, or performs bandwidth part BWP switching only according to the indication information of one TRP, or performs static BWP switching, or does not respond to dynamic BWP switching.
In this embodiment, when configuring multiple TRPs for a terminal on a network side, the terminal performs BWP switching on bandwidth parts according to indication information of multiple TRPs, or performs BWP switching on bandwidth parts only according to indication information of one TRP, or performs static BWP switching, or does not respond to dynamic BWP switching, which can avoid collision of BWP switching and ensure normal transmission of data.
When configuring multiple TRPs for a terminal on a network side, the multiple TRPs may transmit multiple Physical Downlink Control Channels (PDCCHs) and multiple Physical Downlink Shared Channels (PDSCHs), each TRP transmits one PDCCH and one PDSCH, and the multiple PDSCHs may transmit the same Transport Block (TB) or different TBs.
In an optional embodiment, the terminal performs BWP handover according to the indication information of a plurality of TRPs, or performs BWP handover only according to the indication information of one TRP, where the BWP handover includes any one of:
after receiving a BWP switching instruction of at least one preset TRP in the plurality of TRPs, the terminal performs dynamic BWP switching;
after receiving a BWP switching instruction of any TRP of the plurality of TRPs, the terminal performs dynamic BWP switching;
the terminal performs BWP switching based on a timer according to data scheduling of at least one preset TRP in the plurality of TRPs;
the terminal performs BWP switching based on a timer according to data scheduling of any TRP in the plurality of TRPs;
and the terminal respectively performs BWP switching according to the BWP switching instruction of each TRP in the plurality of TRPs.
Specifically, at least two TRPs of the plurality of TRPs correspond to the same cell or BWP.
In an optional embodiment, the configuring, by the network side, a plurality of sending and receiving points TRP for the terminal includes at least one of:
a control resource set CORESET configured at a network side accords with a first preset rule;
configuring a plurality of explicit TRP identification IDs on a network side;
configuring a plurality of Active TCI states list activated TCI state lists at a network side;
a network side configures a plurality of physical downlink control channels PDCCH-configuration config signaling elements;
the network side configures a plurality of physical downlink shared channel PDSCH-config signaling elements.
In an optional embodiment, the first preset rule includes at least one of:
the number exceeds the preset number;
CORESET for which a specific identity exists;
there is a CORESET that associates multiple CORESETs.
In an optional embodiment, the performing, by the terminal, a static BWP handover includes at least one of:
the terminal does not respond to the receipt of the BWP handover signaling in the PDCCH;
the terminal does not respond to a BWP handover timer;
the terminal receives BWP switching signaling through a Radio Resource Control (RRC) message or a media intervention control element (MAC CE);
the terminal expects not to receive the relevant configuration for timer-based BWP handover.
In an optional embodiment, the preset TRP is:
TRP configured at the network side; or
A TRP that complies with a second preset rule,
in an optional embodiment, the second preset rule comprises any one of:
at least one of K0, K1 and K2 associated with the downlink control information DCI corresponding to the TRP meets a preset requirement, wherein K0 is a time interval from PDCCH to PDSCH scheduling, K1 is a time interval from PDSCH to PUCCH feedback, and K2 is a time interval from PDCCH to PUSCH scheduling;
the CORESET ID corresponding to the TRP is minimum or maximum;
a plurality of explicit TRP IDs configured on the network side are minimum or maximum;
IDs in a plurality of Active TCI state lists configured on the network side meet corresponding rules;
the ID corresponding to a plurality of PDCCH-config signaling elements configured by the network side is minimum or maximum;
and the ID corresponding to a plurality of PDSCH-config signaling elements configured on the network side is minimum or maximum.
In an optional embodiment, the performing, by the terminal, dynamic BWP handover includes at least one of:
switching BWP according to a BWP switching timer;
and performing BWP switching according to the BWP switching instruction of the preset TRP.
In an optional embodiment, the performing BWP switching according to the BWP switching timer includes:
the terminal judges whether to perform BWP switching according to a BWP switching timer according to the data scheduling of the TRPs; or alternatively
Performing BWP switching according to a BWP switching timer when the data schedules of the plurality of TRPs all conform to a timer-based BWP switching condition; or alternatively
Not performing BWP switching based on a BWP switching timer when data scheduling of any of the plurality of TRPs does not comply with a timer-based BWP switching condition.
In an optional embodiment, the plurality of TRPs includes a first TRP triggering BWP handover and a second TRP other than the first TRP, and the method further includes:
and determining whether to receive and transmit the data and control information corresponding to the second TRP according to whether the BWP switching is performed within a preset time range.
In an alternative embodiment, when not within the predetermined time range:
not receiving the PDSCH transmitted by the second TRP; or alternatively
Not sending an uplink shared channel (PUSCH) corresponding to the second TRP; or alternatively
Not responding to the second TRP-initiated PDSCH.
In an optional embodiment, the preset time range for performing BWP handover includes at least one of the following:
a preset time period expires from a time when the BWP handover signaling is received to a time after the BWP handover signaling is received;
starting from the moment when the BWP switching signaling is received and ending after a PUCCH feedback acknowledgement message ACK corresponding to DCI to which the BWP switching signaling belongs;
and ending a preset time period from the moment when the BWP switching signaling is received to the time after PUCCH feedback ACK corresponding to DCI to which the BWP switching signaling belongs.
In an optional embodiment, a preset time period after the BWP handover signaling is received or a preset time period after a PUCCH feedback ACK corresponding to a DCI to which the BWP handover signaling belongs is configured or preconfigured or agreed by a protocol on a network side.
In an optional embodiment, a preset time period after the BWP switching signaling is received or a preset time period after PUCCH feedback ACK corresponding to DCI to which the BWP switching signaling belongs is 3ms.
In an embodiment, when the terminal performs BWP handover based on the BWP handover signaling of the PDCCH, whether to receive the BWP handover signaling from the terminal may be determined according to whether the received control information is the control information corresponding to the preset TRP. The preset TRP may be configured by a network side, may be preconfigured, may be a TRP according with a preset rule, and may also be a TRP agreed by a protocol. Whether the TRP meets a preset rule can be determined according to one or more of K0, K1 and K2 associated with control information corresponding to the configured TRP, for example, TRP1 corresponds to CORESET1, TRP2 corresponds to CORESET2, K0 corresponding to CORESET1 is 1/2/3/4, K0 corresponding to CORESET2 is 2/3/4/5, and the preset rule is that the minimum K0 is selected, the terminal only receives a BWP switching signaling from the control information of TRP1, wherein K0 is a time interval from PDCCH to PDSCH scheduling, K1 is a time interval from PDSCH to PUCCH feedback, and K2 is a time interval from PDCCH to PUSCH scheduling.
In order to avoid conflict of BWP handover, after the TRP1 triggers the BWP handover, the terminal determines whether the UE receives a corresponding PDSCH at the TRP2 or responds to the PDSCH initiated by the TRP2 according to whether the BWP handover triggered by the TRP1 is within a plurality of time ranges; the method comprises the following steps: if the PDSCH corresponding to other TRPs, i.e., other TRPs except the TRP triggering BWP handover, is not received during BWP handover, or the UE does not respond to DCI initiated by other TRPs; or: starting from the moment when the BWP switching signaling is received and ending after a PUCCH feedback confirmation message ACK corresponding to DCI to which the BWP switching signaling belongs, not receiving PDSCHs corresponding to other TRPs, or not responding to DCI initiated by other TRPs by UE; and ending a preset time period from the moment when the BWP switching signaling is received to the moment after the BWP switching signaling is received, and not receiving PDSCHs corresponding to other TRPs or not responding to DCIs initiated by other TRPs by the UE.
In another embodiment, when the terminal performs BWP handover based on the BWP handover signaling of the PDCCH, the terminal may further perform BWP handover according to the BWP handover signaling of multiple TRPs. In order to avoid conflict of BWP switching, after the BWP switching is triggered by TRP1, the terminal determines whether UE receives a corresponding PDSCH at TRP2 or responds to the PDSCH initiated by TRP2 according to whether the BWP switching is triggered by TRP1 within a plurality of time ranges; the method comprises the following steps: if the PDSCH corresponding to other TRPs, namely other TRPs except the TRP triggering the BWP switching, is not received or the UE does not respond to DCI initiated by other TRPs during the BWP switching (from the moment when the BWP switching signaling is received to the preset time period after the BWP switching signaling is received); or ending from the moment when the BWP switching signaling is received to after a PUCCH feedback acknowledgement message ACK corresponding to DCI to which the BWP switching signaling belongs, and not receiving PDSCH corresponding to other TRPs, or not responding to DCI initiated by other TRPs by UE; or a preset time period from the moment when the BWP handover signaling is received to a time after the PUCCH corresponding to the DCI to which the BWP handover signaling belongs feeds back the ACK expires, the PDSCH corresponding to the other TRP is not received, or the UE does not respond to the DCI initiated by the other TRP.
And the preset time period after the BWP switching signaling is received or the preset time period after PUCCH feedback ACK corresponding to the DCI to which the BWP switching signaling belongs is configured or pre-configured or agreed by a protocol at a network side.
BWP switching based on the BWP switching timer means that when no data transmission from the corresponding BWP arrives at a certain time, the BWP is automatically switched to the default BWP.
In a specific embodiment, the UE may determine whether to perform BWP handover based on the BWP handover timer according to the data scheduling of the TRPs, for example, when the data scheduling of one of the TRPs does not meet the timer-based BWP handover condition, the UE does not perform BWP handover. In order to avoid conflict of BWP switching, after BWP switching is triggered by data scheduling of TRP1, a terminal determines whether UE receives a corresponding PDSCH at TRP2 or responds to the PDSCH initiated by TRP2 according to whether BWP switching is triggered at TRP1 within a plurality of time ranges; the method comprises the following steps: if the PDSCH corresponding to other TRPs, namely other TRPs except the TRP triggering the BWP switching, is not received or the UE does not respond to DCI initiated by other TRPs during the BWP switching (from the moment when the BWP switching signaling is received to the preset time period after the BWP switching signaling is received); or ending from the moment when the BWP switching signaling is received to after a PUCCH feedback acknowledgement message ACK corresponding to DCI to which the BWP switching signaling belongs, and not receiving PDSCH corresponding to other TRPs, or not responding to DCI initiated by other TRPs by UE; or the preset time period from the moment when the BWP switching signaling is received to the time after the PUCCH corresponding to the DCI to which the BWP switching signaling belongs feeds back the ACK is cut off, the PDSCH corresponding to other TRPs is not received, or the UE does not respond to the DCI initiated by other TRPs.
And the preset time period after the BWP switching signaling is received or the preset time period after PUCCH feedback ACK corresponding to the DCI to which the BWP switching signaling belongs is configured or pre-configured or agreed by a protocol at a network side.
In another embodiment, the terminal may determine whether to perform BWP handover based on the BWP handover timer according to whether the corresponding control information or data schedule corresponds to a preset TRP. The preset TRP may be configured by a network side, may be preconfigured, may be a TRP according with a preset rule, and may also be a TRP agreed by a protocol. Whether the TRP meets a preset rule can be determined according to one or more of K0, K1 and K2 associated with control information corresponding to the configured TRP, for example, TRP1 corresponds to CORESET1, TRP2 corresponds to CORESET2, K0 corresponding to CORESET1 is 1/2/3/4, K0 corresponding to CORESET2 is 2/3/4/5, and the preset rule is that the minimum K0 is selected, the terminal only receives a BWP switching signaling from the control information of TRP1, wherein K0 is a time interval from PDCCH to PDSCH scheduling, K1 is a time interval from PDSCH to PUCCH feedback, and K2 is a time interval from PDCCH to PUSCH scheduling.
In order to avoid conflict of BWP switching, after the BWP switching is triggered by TRP1, the terminal determines whether UE receives a corresponding PDSCH at TRP2 or responds to the PDSCH initiated by TRP2 according to whether the BWP switching is triggered by TRP1 within a plurality of time ranges; the method comprises the following steps: if the PDSCH corresponding to other TRPs, i.e., other TRPs except the TRP triggering BWP handover, is not received during BWP handover, or the UE does not respond to DCI initiated by other TRPs; or: starting from the moment when the BWP switching signaling is received and ending after a PUCCH feedback confirmation message ACK corresponding to DCI to which the BWP switching signaling belongs, not receiving PDSCHs corresponding to other TRPs, or not responding to DCI initiated by other TRPs by UE; and ending a preset time period from the moment when the BWP switching signaling is received to the moment after the BWP switching signaling is received, and not receiving PDSCHs corresponding to other TRPs or not responding to DCIs initiated by other TRPs by the UE.
An embodiment of the present invention further provides a bandwidth part switching method, which is applied to a network side device, and as shown in fig. 5, the method includes:
step 201: configuring a plurality of sending and receiving points (TRPs) for a terminal, and indicating the terminal to perform bandwidth part (BWP) switching through one TRP in the plurality of TRPs; or respectively instructing the terminal to perform BWP handover through the plurality of TRPs.
An embodiment of the present invention further provides a wide-band part switching device, which is applied to a terminal, as shown in fig. 6, and includes:
a processing module 31, configured to, when configuring multiple sending and receiving points TRP for the terminal on the network side, perform bandwidth partial BWP switching respectively according to the indication information of multiple TRPs, or perform bandwidth partial BWP switching only according to the indication information of one TRP, or perform static BWP switching, or do not respond to dynamic BWP switching.
In this embodiment, when configuring multiple sending and receiving points TRP for a terminal on the network side, the terminal performs bandwidth partial BWP switching respectively according to the indication information of multiple TRPs, or performs bandwidth partial BWP switching only according to the indication information of one TRP, or performs static BWP switching, or does not respond to dynamic BWP switching, which can avoid conflict of BWP switching and ensure normal transmission of data.
In an optional embodiment, the processing module is specifically configured to execute any one of:
after a BWP switching instruction of at least one preset TRP in the plurality of TRPs is received, carrying out dynamic BWP switching;
after a BWP switching instruction of any TRP in the plurality of TRPs is received, carrying out dynamic BWP switching;
performing timer-based BWP handover according to data scheduling of at least one preset TRP of the plurality of TRPs;
performing timer-based BWP handover according to data scheduling of any of the plurality of TRPs;
and respectively performing BWP switching according to the BWP switching instruction of each TRP in the plurality of TRPs.
Specifically, at least two TRPs of the plurality of TRPs correspond to the same cell or BWP.
In an optional embodiment, the configuring, by the network side, a plurality of sending and receiving points TRP for the terminal includes at least one of:
a control resource set CORESET configured at a network side accords with a first preset rule;
configuring a plurality of explicit TRP identification IDs on a network side;
configuring a plurality of Active TCI states list activated TCI state lists at a network side;
a network side configures a plurality of physical downlink control channels PDCCH-configuration config signaling elements;
the network side configures a plurality of physical downlink shared channel PDSCH-config signaling elements.
In an optional embodiment, the first preset rule includes at least one of:
the number exceeds the preset number;
CORESET for which a specific identity exists;
there is a CORESET that associates multiple CORESETs.
In an optional embodiment, the processing module performs static BWP switching including at least one of:
the terminal does not respond to the receipt of the BWP handover signaling in the PDCCH;
the terminal does not respond to a BWP handover timer;
the terminal receives BWP switching signaling through a Radio Resource Control (RRC) message or a media intervention control element (MAC CE);
the terminal expects not to receive the relevant configuration for timer-based BWP handover.
In an optional embodiment, the preset TRP is:
TRP configured at the network side; or
A TRP that complies with a second preset rule,
in an optional embodiment, the second preset rule comprises any one of:
at least one of K0, K1 and K2 associated with the downlink control information DCI corresponding to the TRP meets a preset requirement, wherein K0 is a time interval from PDCCH to PDSCH scheduling, K1 is a time interval from PDSCH to PUCCH feedback, and K2 is a time interval from PDCCH to PUSCH scheduling;
the CORESET ID corresponding to the TRP is minimum or maximum;
a plurality of explicit TRP IDs configured on the network side are minimum or maximum;
IDs in a plurality of Active TCI state lists configured on the network side meet corresponding rules;
the ID corresponding to a plurality of PDCCH-config signaling elements configured by the network side is minimum or maximum;
and the ID corresponding to a plurality of PDSCH-config signaling elements configured on the network side is minimum or maximum.
In an optional embodiment, the processing module performing dynamic BWP switching includes at least one of:
performing BWP switching according to a BWP switching timer;
and performing BWP switching according to the BWP switching instruction of the preset TRP.
In an optional embodiment, the processing module is specifically configured to determine, according to the data schedule of the plurality of TRPs, whether to perform BWP handover according to a BWP handover timer; or
Performing BWP switching according to a BWP switching timer when the data schedules of the plurality of TRPs all conform to a timer-based BWP switching condition; or alternatively
Not performing BWP switching based on a BWP switching timer when data scheduling of any of the plurality of TRPs does not comply with a timer-based BWP switching condition.
In an optional embodiment, the plurality of TRPs include a first TRP triggering BWP handover and a second TRP other than the first TRP, and the processing module is further configured to determine whether to receive and send data and control information corresponding to the second TRP according to whether the BWP handover is performed within a preset time range.
In an optional embodiment, the processing module is specifically configured to, when the time is not within a preset time range:
not receiving the PDSCH transmitted by the second TRP; or
Not sending an uplink shared channel (PUSCH) corresponding to the second TRP; or
Not responding to the second TRP-initiated PDSCH.
In an optional embodiment, the preset time range for performing BWP handover includes at least one of the following:
a preset time period expires from a time when the BWP handover signaling is received to a time after the BWP handover signaling is received;
starting from the moment when the BWP switching signaling is received and ending after a PUCCH feedback acknowledgement message ACK corresponding to DCI to which the BWP switching signaling belongs;
and ending a preset time period from the moment when the BWP switching signaling is received to the time after the PUCCH corresponding to the DCI to which the BWP switching signaling belongs feeds back the ACK.
In an optional embodiment, a preset time period after the BWP handover signaling is received or a preset time period after a PUCCH feedback ACK corresponding to a DCI to which the BWP handover signaling belongs is configured or preconfigured or agreed by a protocol on a network side.
In an optional embodiment, a preset time period after the BWP switching signaling is received or a preset time period after PUCCH feedback ACK corresponding to DCI to which the BWP switching signaling belongs is 3ms.
An embodiment of the present invention further provides a wide-band part switching device, which is applied to a network side device, as shown in fig. 7, and includes:
a configuration module 41, configured to configure multiple TRPs for a terminal, and instruct the terminal to perform BWP handover of a bandwidth part through one of the multiple TRPs; or respectively instructing the terminal to perform BWP handover through the plurality of TRPs.
An embodiment of the present invention further provides a communication device, including: memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method for bandwidth partial switching as described above.
When the communication device is a network device, as shown in fig. 8, the network device 500 includes: a processor 501, a transceiver 502, a memory 503, a user interface 504, and a bus interface, wherein:
in this embodiment of the present invention, the network side device 500 further includes: a computer program stored on the memory 503 and executable on the processor 501, the computer program realizing the following steps when executed by the processor 501: configuring a plurality of sending and receiving points (TRPs) for a terminal, and indicating the terminal to perform bandwidth part (BWP) switching through one TRP in the plurality of TRPs; or respectively instructing the terminal to perform BWP handover through the plurality of TRPs.
In fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 501 and various circuits of memory represented by memory 503 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 502 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 504 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 501 is responsible for managing the bus architecture and general processing, and the memory 503 may store data used by the processor 501 in performing operations.
When the communication device is a terminal, as shown in fig. 9, the terminal 600 includes but is not limited to: radio frequency unit 601, network module 602, audio output unit 603, input unit 604, sensor 605, display unit 606, user input unit 607, interface unit 608, memory 609, processor 610, and power 611. Those skilled in the art will appreciate that the terminal configuration shown in fig. 9 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The processor 610 is configured to, when a network side configures multiple TRPs for the terminal, perform BWP handover on the bandwidth part according to indication information of the multiple TRPs, or perform BWP handover on the bandwidth part only according to indication information of one of the TRPs, or perform static BWP handover, or do not respond to dynamic BWP handover.
In an alternative embodiment, the processor 610 is specifically configured to perform any one of the following:
after a BWP switching instruction of at least one preset TRP in the plurality of TRPs is received, carrying out dynamic BWP switching;
after a BWP switching instruction of any TRP in the plurality of TRPs is received, carrying out dynamic BWP switching;
performing timer-based BWP handover according to data scheduling of at least one preset TRP in the plurality of TRPs;
performing timer-based BWP handover according to a data schedule of any of the plurality of TRPs;
and respectively performing BWP switching according to the BWP switching instruction of each TRP in the plurality of TRPs.
Specifically, at least two TRPs of the plurality of TRPs correspond to the same cell or BWP.
In an optional embodiment, the configuring, by the network side, a plurality of sending and receiving points TRP for the terminal includes at least one of:
a control resource set CORESET configured at a network side accords with a first preset rule;
configuring a plurality of explicit TRP identification IDs on a network side;
configuring a plurality of Active TCI states list activated TCI state lists at a network side;
a network side configures a plurality of physical downlink control channels PDCCH-configuration config signaling elements;
the network side configures a plurality of physical downlink shared channel PDSCH-config signaling elements.
In an optional embodiment, the first preset rule includes at least one of:
the number exceeds the preset number;
CORESET for which a specific identity exists;
there is a CORESET that associates multiple CORESETs.
In an alternative embodiment, the processor 610 performs the static BWP handover including at least one of:
the terminal does not respond to the receipt of the BWP handover signaling in the PDCCH;
the terminal does not respond to a BWP handover timer;
the terminal receives BWP switching signaling through a Radio Resource Control (RRC) message or a media intervention control element (MAC CE);
the terminal expects not to receive the relevant configuration for timer-based BWP handover.
In an optional embodiment, the preset TRP is:
TRP configured at the network side; or
A TRP that complies with a second preset rule,
in an optional embodiment, the second preset rule comprises any one of:
at least one of K0, K1 and K2 associated with the downlink control information DCI corresponding to the TRP meets a preset requirement, wherein K0 is a time interval from PDCCH to PDSCH scheduling, K1 is a time interval from PDSCH to PUCCH feedback, and K2 is a time interval from PDCCH to PUSCH scheduling;
the CORESET ID corresponding to the TRP is minimum or maximum;
a plurality of explicit TRP IDs configured on the network side are minimum or maximum;
IDs in a plurality of Active TCI state lists configured on the network side meet corresponding rules;
the ID corresponding to a plurality of PDCCH-config signaling elements configured on the network side is minimum or maximum;
and the ID corresponding to a plurality of PDSCH-config signaling elements configured on the network side is minimum or maximum.
In an alternative embodiment, the processor 610 performs the dynamic BWP switching by at least one of:
performing BWP switching according to a BWP switching timer;
and performing BWP switching according to the BWP switching instruction of the preset TRP.
In an optional embodiment, the processor 610 is specifically configured to determine, according to the data schedule of the plurality of TRPs, whether to perform BWP handover according to a BWP handover timer; or alternatively
Performing BWP switching according to a BWP switching timer when the data schedules of the plurality of TRPs all conform to a timer-based BWP switching condition; or
Not performing BWP switching based on a BWP switching timer when data scheduling of any of the plurality of TRPs does not comply with a timer-based BWP switching condition.
In an optional embodiment, the plurality of TRPs include a first TRP triggering BWP handover and a second TRP excluding the first TRP, and the processor 610 is further configured to determine whether to receive and transmit data and control information corresponding to the second TRP according to whether the BWP handover is performed within a preset time range.
In an optional embodiment, the processor 610 is specifically configured to, when not within a preset time range:
not receiving the PDSCH transmitted by the second TRP; or
Not sending an uplink shared channel (PUSCH) corresponding to the second TRP; or
Not responding to the second TRP initiated PDSCH.
In an optional embodiment, the preset time range for performing BWP handover includes at least one of the following:
starting from the moment when the BWP switching signaling is received to the expiration of a preset time period after the BWP switching signaling is received;
starting from the moment when the BWP switching signaling is received and ending after a PUCCH feedback acknowledgement message ACK corresponding to DCI to which the BWP switching signaling belongs;
and ending a preset time period from the moment when the BWP switching signaling is received to the time after PUCCH feedback ACK corresponding to DCI to which the BWP switching signaling belongs.
In an optional embodiment, the preset time period after the BWP switching signaling is received or the preset time period after the PUCCH feedback ACK corresponding to the DCI to which the BWP switching signaling belongs is configured or preconfigured or agreed by a protocol on the network side.
In an optional embodiment, a preset time period after the BWP handover signaling is received or a preset time period after a PUCCH feedback ACK corresponding to a DCI to which the BWP handover signaling belongs is received is 3ms.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 601 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 610; in addition, the uplink data is transmitted to the base station. Generally, radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 601 may also communicate with a network and other devices through a wireless communication system.
The terminal provides wireless broadband internet access to the user through the network module 602, such as helping the user send and receive e-mails, browse web pages, and access streaming media.
The audio output unit 603 may convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Also, the audio output unit 603 can provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal 600. The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.
The input unit 604 is used to receive audio or video signals. The input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics processor 6041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 606. The image frames processed by the graphic processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sounds and can process such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 601 in case of the phone call mode.
The terminal 600 also includes at least one sensor 605, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 6061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 6061 and/or the backlight when the terminal 600 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer and tapping), and the like; the sensors 605 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 606 is used to display information input by the user or information provided to the user. The Display unit 606 may include a Display panel 6061, and the Display panel 6061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 607 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 6071 using a finger, stylus, or any other suitable object or attachment). The touch panel 6071 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 610, receives a command from the processor 610, and executes the command. In addition, the touch panel 6071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 607 may include other input devices 6072 in addition to the touch panel 6071. Specifically, the other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation thereon or nearby, the touch operation can be transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 can provide a corresponding visual output on the display panel 6061 according to the type of the touch event. Although in fig. 7, the touch panel 6071 and the display panel 6061 are two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 6071 and the display panel 6061 may be integrated to implement the input and output functions of the terminal, and this is not limited herein.
The interface unit 608 is an interface for connecting an external device to the terminal 600. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 608 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 600 or may be used to transmit data between the terminal 600 and an external device.
The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 609 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 610 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 609, and calling data stored in the memory 609, thereby integrally monitoring the terminal. Processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.
The terminal 600 may further include a power supply 611 (e.g., a battery) for supplying power to the various components, and preferably, the power supply 611 is logically connected to the processor 610 through a power management system, so that functions of managing charging, discharging, and power consumption are performed through the power management system.
In addition, the terminal 600 includes some functional modules that are not shown, and are not described in detail herein.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps in the method for switching a bandwidth part as described above are implemented.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The embodiments in the present specification are all described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same and similar between the embodiments may be referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of 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, embodiments of 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 so forth) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, user equipment (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 of these 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 the preferred embodiment and all changes and modifications that fall within the true scope of the embodiments of the present invention.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or user equipment that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or user equipment. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional identical elements in a process, method, article, or user device that comprises the element.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (14)
1. A switching method for a wide band part, which is applied to a terminal, includes:
when a plurality of sending and receiving points TRP are configured for the terminal on the network side, the terminal respectively switches bandwidth part BWP according to the respective indication information of the plurality of TRP, and the plurality of TRP correspond to the same BWP.
2. The method of claim 1, wherein the terminal performing BWP handover according to the indication information of each of the plurality of TRPs comprises:
and the terminal receives data according to the data scheduling of each TRP in the plurality of TRPs, wherein the data scheduling of all TRPs in the plurality of TRPs corresponds to the same BWP.
3. The method of claim 1, further comprising:
receiving the configuration of the plurality of TRPs from a network side.
4. The method of bandwidth partial handover according to claim 3, wherein the configuration of the plurality of TRPs comprises at least one of:
a control resource set, CORESET;
a plurality of TRP identification IDs;
a plurality of Active TCI state lists, active TCI state list;
a plurality of physical downlink control channels, PDCCH-configuration config signaling elements;
a plurality of physical downlink shared channel PDSCH-config signaling elements.
5. The bandwidth partial handover method according to claim 1, wherein the plurality of TRPs includes a first TRP triggering BWP handover and a second TRP other than the first TRP, the method further comprising:
and determining whether to receive and transmit the data and the control information corresponding to the second TRP according to whether the BWP switching is performed within a preset time range.
6. The method of claim 5, wherein when not within the predetermined time range:
not receiving the PDSCH transmitted by the second TRP; or
Not sending an uplink shared channel (PUSCH) corresponding to the second TRP; or
Not responding to the second TRP-initiated PDSCH.
7. The method according to claim 5, wherein the predetermined time range for BWP handover comprises at least one of:
a preset time period expires from a time when the BWP handover signaling is received to a time after the BWP handover signaling is received;
starting from the moment when the BWP switching signaling is received and ending after a PUCCH feedback acknowledgement message ACK corresponding to DCI to which the BWP switching signaling belongs;
and ending a preset time period from the moment when the BWP switching signaling is received to the time after the PUCCH corresponding to the DCI to which the BWP switching signaling belongs feeds back the ACK.
8. The method of claim 7, wherein a preset time period after receiving the BWP handover signaling or a preset time period after PUCCH feedback ACK corresponding to DCI to which the BWP handover signaling belongs is configured or preconfigured or agreed by a protocol on a network side.
9. The method of claim 8, wherein a preset time period after receiving the BWP handover signaling or a preset time period after PUCCH feedback ACK corresponding to DCI to which the BWP handover signaling belongs is 3ms.
10. A switching method for a wide band part is applied to a network side device, and comprises the following steps:
configuring a plurality of sending receiving points (TRPs) for a terminal, and respectively indicating the terminal to perform BWP switching through the plurality of TRPs, wherein the plurality of TRPs correspond to the same BWP.
11. A wide-band part cutting and switching device, applied to a terminal, includes:
a processing module, configured to configure multiple sending and receiving points TRP for the terminal on a network side, where the terminal performs bandwidth portion BWP switching according to respective indication information of the multiple TRPs, and the multiple TRPs correspond to the same BWP.
12. The utility model provides a wide-band portion cutting device which characterized in that is applied to network side equipment, includes:
the configuration module is used for configuring a plurality of sending and receiving points TRP for a terminal, and respectively indicating the terminal to perform BWP switching through the plurality of TRP, wherein the plurality of TRP correspond to the same BWP.
13. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the bandwidth part switching method according to any of claims 1 to 10.
14. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for bandwidth portion switching according to any one of claims 1 to 10.
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| CN202211125081.9A CN115361743A (en) | 2019-01-04 | 2019-01-04 | Bandwidth part switching method and device and communication equipment |
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| CN202211125081.9A CN115361743A (en) | 2019-01-04 | 2019-01-04 | Bandwidth part switching method and device and communication equipment |
| CN201910009154.XA CN111278117B (en) | 2019-01-04 | 2019-01-04 | Bandwidth part switching method and device and communication equipment |
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| WO2018141246A1 (en) * | 2017-02-03 | 2018-08-09 | Huawei Technologies Co., Ltd. | Downlink control information for network coordination schemes |
| US10506587B2 (en) * | 2017-05-26 | 2019-12-10 | Samsung Electronics Co., Ltd. | Method and apparatus for beam indication in next generation wireless systems |
| CN108886804B (en) * | 2018-06-26 | 2022-02-01 | 北京小米移动软件有限公司 | BWP switching method, apparatus and storage medium |
| US11272507B2 (en) * | 2018-07-23 | 2022-03-08 | Qualcomm Incorporated | Bandwidth part switching for multiple transceiver nodes |
| JP7218809B2 (en) * | 2018-12-10 | 2023-02-07 | 日本電気株式会社 | User terminal, sending/receiving point and method |
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