CN110149684B - Wireless communication method, terminal equipment and network equipment - Google Patents

Wireless communication method, terminal equipment and network equipment Download PDF

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CN110149684B
CN110149684B CN201810143037.8A CN201810143037A CN110149684B CN 110149684 B CN110149684 B CN 110149684B CN 201810143037 A CN201810143037 A CN 201810143037A CN 110149684 B CN110149684 B CN 110149684B
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bwp
determining
power control
virtual
power headroom
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CN110149684A (en
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潘学明
孙晓东
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/08—Closed loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a wireless communication method, a terminal device and a network device, which are used for determining uplink transmission power in a BWP switching process. The method comprises the following steps: when the bandwidth part BWP in the activated state is switched from a first BWP to a second BWP, determining an output value of a closed-loop power control accumulator; and determining the actual transmission power when uplink transmission is performed through the second BWP according to the output value of the closed-loop power control accumulator, so that the determination of the actual transmission power when the BWP is switched is realized, and the effectiveness and efficiency of communication can be improved.

Description

Wireless communication method, terminal equipment and network equipment
Technical Field
The present application relates to the field of communications, and in particular, to a wireless communication method, a terminal device, and a network device.
Background
The network device in the New Radio or New air interface (NR) adopts large Bandwidth transmission (such as 100MHz, 400MHz), and because the Bandwidth capabilities of the terminal devices are different, the concept of Bandwidth Part (BWP) is introduced, so that the terminal device with small Bandwidth capability can access (access) the network device with large Bandwidth capability.
One end device may configure one or more BWPs, and when the end device configures multiple BWPs, the end device may dynamically switch between the multiple BWPs, but there is no relevant solution for power control during BWP switching. Therefore, it is necessary to provide a wireless communication method for determining uplink transmission power during BWP handover.
Disclosure of Invention
An object of the embodiments of the present application is to provide a wireless communication method, a terminal device and a network device, which are used to determine uplink transmission power during BWP handover.
In a first aspect, a wireless communication method is provided, the method being performed by a terminal device, the method comprising: when the bandwidth part BWP in the activated state is switched from a first BWP to a second BWP, determining an output value of a closed-loop power control accumulator; and determining the actual transmitting power when the uplink transmission is performed through the second BWP according to the output value of the closed-loop power control accumulator.
In a second aspect, a wireless communication method is provided, the method being performed by a terminal device, the method comprising: determining an actual power headroom for the second BWP; and/or determining a virtual power headroom of the first BWP, wherein the second BWP is in an active state and the first BWP is in a deactivated state.
In a third aspect, a wireless communication method is provided, the method being performed by a network device, the method comprising: and sending bandwidth part BWP switching indication information, wherein the BWP switching indication information is used for indicating a terminal device to switch the active BWP from a first BWP to a second BWP, and determining an output value of a closed-loop power control accumulator of the second BWP.
In a fourth aspect, a wireless communication method is provided, where the method is performed by a network device, and the method includes: and sending first virtual power headroom reporting indication information, wherein the first virtual power headroom reporting indication information includes an index of a first BWP, and the first virtual power headroom reporting indication information is used for indicating a terminal device to send a virtual power headroom report including the first BWP virtual power headroom.
In a fifth aspect, a wireless communication method is provided, the method being performed by a network device, the method comprising: allocating a first open-loop power control parameter for a first BWP of a terminal device, wherein the first open-loop power control parameter is used for determining a virtual power headroom of the first BWP when the first BWP is in a deactivated state.
In a sixth aspect, a terminal device is provided, which includes: an output value determining module, configured to determine an output value of the closed-loop power control accumulator when the bandwidth portion BWP in the active state is switched from the first BWP to the second BWP; and an actual transmit power determining module, configured to determine, according to an output value of the closed-loop power control accumulator, an actual transmit power when performing uplink transmission by using the second BWP.
In a seventh aspect, a terminal device is provided, including: an actual power headroom determination module; and/or a virtual power headroom determination module, wherein the actual power headroom determination module is configured to determine an actual power headroom of a second BWP; the virtual power headroom determining module is configured to determine a virtual power headroom of the first BWP, where the second BWP is in an activated state and the first BWP is in a deactivated state.
In an eighth aspect, a network device is provided, comprising: a switching indication information sending module, configured to send bandwidth part BWP switching indication information, where the BWP switching indication information is used to instruct a terminal device to switch an active BWP from a first BWP to a second BWP, and determine an output value of a closed-loop power control accumulator of the second BWP.
In a ninth aspect, there is provided a network device, comprising: the apparatus includes a power control parameter allocation module configured to allocate a first open-loop power control parameter to a first BWP of a terminal device, where the first open-loop power control parameter is used to determine a virtual power headroom of the first BWP when the first BWP is in a deactivated state.
In a tenth aspect, there is provided a network device comprising: a virtual headroom report indicator sending module, configured to send a first virtual headroom report indicator, where the first virtual headroom report indicator includes an index of a first BWP, and the first virtual headroom report indicator is used to indicate a terminal device to send a virtual headroom report including a virtual headroom of the first BWP.
In an eleventh aspect, a terminal device is provided, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to the first and second aspects.
In a twelfth aspect, a network device is provided, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to the third and fourth aspects.
In a thirteenth aspect, a computer-readable storage medium is provided, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the method according to the first to fourth aspects.
In the embodiment of the present invention, when BWP is switched, the terminal device determines the output value of the closed-loop power control accumulator, and then determines the actual transmit power during uplink transmission according to the output value of the closed-loop power control accumulator, thereby achieving the determination of the actual transmit power during BWP switching, and improving the communication effectiveness and efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic flow diagram of a wireless communication method according to one embodiment of the invention;
FIG. 2 is a schematic diagram of a first BWP and a second BWP relationship, in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of a relationship between a first BWP and a second BWP in accordance with another embodiment of the present invention;
fig. 4 is a schematic flow chart diagram of a wireless communication method according to another embodiment of the present invention;
fig. 5 is a schematic flow chart diagram of a wireless communication method according to yet another embodiment of the present invention;
fig. 6 is a schematic flow chart diagram of a wireless communication method according to yet another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal device according to another embodiment of the present invention;
FIG. 9 is a schematic block diagram of a network device according to one embodiment of the present invention;
FIG. 10 is a schematic block diagram of a network device according to another embodiment of the present invention;
fig. 11 is a schematic configuration diagram of a terminal device according to still another embodiment of the present invention;
fig. 12 is a schematic structural diagram of a network device according to still another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. In the specification and claims, the use of "and/or" means at least one of the connected objects.
It should be understood that the technical solution of the embodiment of the present invention may be applied to a 5G system, or a New Radio (NR) system. In the embodiment of the present invention, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile Telephone), a User Equipment (UE), a handset (handset), a portable device (portable Equipment), a vehicle (vehicle), etc., and the Terminal device may communicate with one or more core networks through a Radio Access Network (RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the Terminal device may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile apparatus.
In the embodiment of the present invention, the network device is a device deployed in a radio access network to provide a wireless communication function for a terminal device. The network device may be a base station, and the base station may include various macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices having a base station function may differ. For example, in an LTE network, referred to as an Evolved node B (eNB or eNodeB), in a third Generation (3rd Generation, 3G) network, referred to as a node B (node B), and so on.
As shown in fig. 1, an embodiment of the present invention provides a wireless communication method, which may be executed by a terminal device, and includes the following steps:
s101: when the BWP in the active state is switched from the first BWP to the second BWP, an output value of the closed-loop power control accumulator is determined.
In this embodiment, the terminal device may be configured with multiple BWPs, each of which may employ the same or different parameter sets (numerology). The upstream BWP and the downstream BWP of the terminal device may be configured by the network device, respectively.
In general, a terminal device may be activated with only one downstream BWP and one upstream BWP at the same time, i.e.: after the terminal device is switched from the first BWP to the second BWP, the first BWP is in the deactivated state, and the second BWP is in the activated state, at this time, the terminal device may further include other BWPs in the deactivated state besides the first BWP. It is to be understood that the first BWP may be in an active state and the second BWP in a deactivated state within a recent time period before the end device switches from the first BWP to the second BWP.
For the above-mentioned first BWP and second BWP, referring to fig. 2 and 3, fig. 2 and 3 schematically show a relationship diagram of two kinds of first BWP and second BWP and a full carrier (over carrier). In fig. 2, the second BWP may be the center frequency point unchanged and the bandwidth changed (increased) relative to the first BWP; in fig. 3, the second BWP may be the center frequency point changing and the bandwidth changing (increasing) at the same time relative to the first BWP; of course, in other embodiments, the second BWP may also be a change in the center frequency point, a constant bandwidth, etc. relative to the first BWP.
The closed-loop power control accumulator can be used for outputting a closed-loop power control accumulated value.
Preferably, in one embodiment, the first BWP and the second BWP may share the use of one closed-loop power control accumulator.
Preferably, in another embodiment, the first BWP and the second BWP may respectively employ different closed-loop power control accumulators.
S102: and determining the actual transmitting power when the uplink transmission is performed through the second BWP according to the output value of the closed-loop power control accumulator.
Specifically, the determination of the actual transmit power for uplink transmission via the second BWP may include one or more of the following three cases:
determining the actual transmission power of the Physical Uplink Shared Channel (PUSCH) transmission through the second BWP;
determining an actual transmit power for physical uplink control channel, PUCCH, transmission over the second BWP; and
determining an actual transmit power for sounding reference signal, SRS, transmission by the second BWP.
Preferably, in an embodiment, when determining the actual transmission power for PUSCH transmission by the second BWP, the maximum transmission power of the terminal device may be determined according to the number of PUSCH frequency domain resources; a path loss (pathloss) compensation factor; a path loss measurement; a power adjustment amount related to a Modulation and Coding Scheme (MCS) for PUSCH Modulation; and determining the actual transmission power for PUSCH transmission according to the output value of the closed-loop power control accumulator.
Determining the actual transmission power for PUCCH transmission by the second BWP and the actual transmission power for SRS transmission is similar to the actual transmission power calculation process for PUSCH transmission in the above embodiment, and is not described herein again.
By the wireless communication method provided by the embodiment of the invention, the terminal device determines the output value of the closed-loop power control accumulator during BWP switching, and then determines the actual transmission power during uplink transmission according to the output value of the closed-loop power control accumulator, so that the determination of the actual transmission power during BWP switching is realized, and the effectiveness and efficiency of communication can be improved.
For the closed-loop power control accumulator mentioned in the foregoing embodiment, the shared closed-loop power control accumulator may be shared by the first BWP and the second BWP, in this case, the shared closed-loop power control accumulator may be reset when the active BWP is switched from the first BWP to the second BWP, specifically, may be reset to a default value, or is referred to as performing an initialization operation on the shared closed-loop power control accumulator.
In addition, the closed-loop power control accumulator mentioned in the first embodiment may be a closed-loop power control accumulator of the second BWP, where the closed-loop power control accumulator of the second BWP is different from the closed-loop power control accumulator of the first BWP, that is, the first BWP and the second BWP may respectively adopt different closed-loop power control accumulators. In this case, when the active BWP is switched from the first BWP to the second BWP, the closed-loop power control accumulator of the second BWP starts to accumulate the power control commands, and does not perform the initialization operation in the above embodiment.
As mentioned earlier, the end device may be configured with multiple BWPs, and in general, the end device corresponds to one active BWP and one or more inactive BWPs at the same time. As shown in fig. 4, an embodiment of the present invention further provides a wireless communication method, which may be executed by a terminal device, and includes the following steps:
s401: determining an actual power headroom for the second BWP; and/or determining a virtual power headroom of the first BWP, wherein the second BWP is in an active state and the first BWP is in a deactivated state.
The embodiment may determine the actual power headroom of the second BWP when the sub-BWP in the active state is switched from the first BWP to the second BWP; and/or determining a virtual power headroom of the first BWP, i.e. determining at least one of an actual power headroom of the second BWP and a virtual power headroom of the first BWP. In addition, the present embodiment may also perform determining the actual power headroom of the second BWP in other time periods; and/or determining a virtual power headroom for the first BWP.
By the wireless communication method provided by the embodiment of the invention, the terminal device can determine the actual power headroom of the second BWP in the active state; determining a virtual power headroom of a first BWP in a deactivated state; or the actual power headroom of the second BWP in the active state and the virtual power headroom of the first BWP in the deactivated state are determined at the same time, so that the determination of the power headroom (including the actual power headroom and the virtual power headroom, the same applies below) is achieved. In addition, after the terminal device determines the power headroom, the determined power headroom can be reported to the network device, so that the network device performs corresponding power allocation, and the effectiveness and efficiency of communication can be improved.
Preferably, in one embodiment, when determining the actual power headroom of the second BWP, the actual transmit power of the second BWP may be determined first; the actual power headroom is then determined based on a difference between a second maximum allowed transmit power of the second BWP and the actual transmit power. The embodiment of the present application shows a specific implementation of the actual power headroom of the second BWP. Of course, it should be understood that the actual power headroom of the second BWP can be implemented in other ways, and the embodiments of the present application do not limit this.
Preferably, in an embodiment, when determining the actual transmission power of the second BWP, the actual transmission power may be determined according to an output value of a closed-loop power control accumulator of the second BWP, where the closed-loop power control accumulator of the second BWP may be different from the closed-loop power control accumulator of the first BWP, that is, the first BWP and the second BWP respectively employ different closed-loop power control accumulators. In this case, when the active BWP is switched from the first BWP to the second BWP, the closed-loop power control accumulator of the second BWP starts to accumulate power control commands.
Preferably, in an embodiment, when determining the actual transmit power of the second BWP, the actual transmit power may also be determined according to an output value of a closed-loop power control accumulator shared by the first BWP and the second BWP. In this case, the shared closed-loop power control accumulator may be reset, specifically to a default value, when the active BWP is switched from the first BWP to the second BWP, or to perform an initialization operation on the shared closed-loop power control accumulator.
The actual transmission power mentioned in the above embodiments may specifically include a combination of one or more of the following: actual transmit power of the second BWP over PUSCH transmission; actual transmit power transmitted over PUCCH; and the actual transmit power transmitted by the SRS.
Accordingly, the determining the actual power headroom of the second BWP comprises: determining an actual power headroom for transmission over a PUSCH; actual power headroom transmitted over PUCCH; and the actual power headroom over SRS transmission.
Specifically, in one example, when determining the actual power headroom of the PUSCH transmission by the second BWP, the actual transmit power of the PUSCH transmission by the second BWP may be first determined and then the actual power headroom of the PUSCH transmission may be determined according to the following formula:
Figure BDA0001578109620000091
in the above-mentioned formula,
PHtype1,f,c,b(i,j,qdl) is the actual power headroom transmitted over PUSCH;
PCMAX,f,c(i) is the maximum allowed transmission power of the sub-frame i of the terminal equipment on the serving cell c;
Figure BDA0001578109620000092
the number of PUSCH frequency domain resources of a subframe i of the terminal equipment on a serving cell c is shown, and an RB is taken as a unit; b may be an index of the second BWP;
PO_PUSCH,f,c,b(j) is the PUSCH open loop power target value of the subframe i of the terminal equipment on the serving cell c, and J belongs to {0, 1., J-1 };
αf,c,b(j) is a path loss compensation factor;
PLf,c,b(qd) Is the path loss measurement on serving cell c;
ΔTF,f,c,b(i) is modulated and coded with PUSCHPolicy and Coding Scheme (MCS) related power adjustment;
ff,c,b(i, l) is a PUSCH closed-loop power control command accumulation value of subframe i on the serving cell c, and specifically, the aforementioned closed-loop power control accumulation of the second BWP or the output value of the shared closed-loop power control accumulator may be used.
Determining the actual power headroom for PUCCH transmission by the second BWP and the actual power headroom for SRS transmission is similar to the actual power headroom calculation process for PUSCH transmission in the above formula, and is not described herein again.
The above embodiments describe the calculation of the actual power headroom of the second BWP in detail, and the calculation of the virtual power headroom of the first BWP will be described below.
Preferably, in one embodiment, a virtual power headroom for the first BWP is determined, a first open loop power control parameter for the first BWP may be determined; determining a virtual transmit power of the first BWP in accordance with the first open-loop power control parameter; and determining a virtual power headroom of the first BWP according to a difference between a first maximum allowed transmit power of the first BWP and the virtual transmit power. Of course, it should be understood that the virtual power headroom of the first BWP may be implemented in other ways, and the embodiments of the present application do not limit this.
In the above embodiment, a first closed loop power control accumulated value for the first BWP may also be determined; thus, the determining the virtual transmit power of the first BWP in the above embodiments includes: determining a virtual transmit power of the first BWP based on the first open-loop power control parameter and the first closed-loop power control accumulation value.
The virtual transmission power may specifically include a combination of one or more of the following: virtual transmit power of a first BWP over PUSCH transmission; virtual transmit power transmitted over a PUCCH; and a virtual transmit power through the SRS transmission.
Accordingly, the determining of the virtual power headroom of the first BWP includes the virtual power headroom of the first BWP transmitted via PUSCH; virtual power headroom transmitted over PUCCH; and a virtual power headroom by SRS transmission.
Specifically, in one example, when determining the virtual power headroom of the first BWP transmission over the PUSCH, the virtual transmit power of the first BWP transmission over the PUSCH may be first determined and then the virtual power headroom of the PUSCH transmission may be determined according to the following formula:
Figure BDA0001578109620000101
in the above-mentioned formula,
PHtype1,f,c,k(i,j,qdl) is the virtual power headroom transmitted over PUSCH;
Figure BDA0001578109620000102
the maximum virtual transmission power of a subframe i of the terminal equipment on a serving cell c; k may be an index of the first BWP;
PO_PUSCH,f,c,k(j) is the PUSCH open loop power target value of the subframe i of the terminal equipment on the serving cell c, and J belongs to {0, 1., J-1 };
αf,c.k(j) is a path loss compensation factor;
ff,c,k(i, l) is the path loss measurement on serving cell c;
ff,c(i, l) is the PUSCH first closed loop power control accumulation value for subframe i on serving cell c.
Preferably, in an embodiment, the determining the first closed-loop power control accumulated value may be determining the output value of the shared closed-loop power control accumulator or the closed-loop power control accumulation of the second BWP as the first closed-loop power control accumulated value; or, determining a preset value as the first closed loop power control accumulated value.
Terminal equipment is determining
Figure BDA0001578109620000111
In time, maximum power reduction (maximum) can be assumed when PUSCH is transmittedum Power Reduction, MPR) is 0dB, additional Maximum Power Reduction (a-MPR) is 0dB, and Power Management Maximum Power Reduction (P-MPR) is 0 dB. The Allowed band edge transmission power relaxation (TC) of operation is 0 dB.
Determining the virtual power headroom for PUCCH transmission by the first BWP and the virtual power headroom for SRS transmission is similar to the virtual power headroom calculation process for PUSCH transmission in the above formula, and is not repeated here.
The first open-loop power control parameter mentioned in the above several embodiments may be a first open-loop power control parameter set number j and a first reference signal number q for path loss measurementdAt least one of the two is determined.
Thus, the determining the first open loop power control parameter mentioned in the above embodiments includes:
determining a second open-loop power control parameter set index currently used by the second BWP as the first open-loop power control parameter set index j, and/or,
determining a second reference signal number currently used by the second BWP as the first reference signal number qd。
In addition to the above-mentioned several ways of determining the first open-loop power control parameter, preferably, in an embodiment, a preset open-loop power control parameter set number may be determined as the first open-loop power control parameter set number j, and/or a preset reference signal number may be determined as the first reference signal number qd。
The above-described embodiments describe how to determine the actual power headroom of the second BWP, respectively; and/or determining a virtual power headroom for the first BWP. After determining the power headroom, the terminal device may send a virtual power headroom report including the virtual power headroom to the network device; and/or, the terminal may send an actual power headroom report including the actual power headroom to the network device.
Preferably, in an embodiment, the terminal device further includes an index of the first BWP in the virtual power headroom report sent to the network device.
Preferably, in an embodiment, the virtual power headroom report further includes virtual power headroom of BWPs in the deactivated state except for the first BWP.
Preferably, in an embodiment, the sending a virtual power headroom report including the virtual power headroom to a network device includes: and when receiving the virtual power headroom report indication information from the network device, sending a virtual power headroom report including the first BWP virtual power headroom to the network device.
Preferably, in an embodiment, upon receiving the virtual power headroom report indication information from the network device, a virtual power headroom report including virtual power headroom of all deactivated BWPs is sent to the network device, where all deactivated BWPs include the first BWP.
Preferably, in an embodiment, the terminal device sends the virtual power headroom report of all the BWPs in the deactivated state and the index of all the BWPs in the deactivated state to the network device, where the all the BWPs in the deactivated state include the first BWP.
As shown in fig. 5, an embodiment of the present invention further provides a wireless communication method, which may be executed by a network device, and includes the following steps:
s501: sending BWP switching indication information, wherein the BWP switching indication information is used for indicating a terminal device to switch the active BWP from a first BWP to a second BWP; and determining an output value of a closed-loop power control accumulator of the second BWP.
According to the wireless communication method, the network device can send the BWP switching indication information to indicate the terminal device to switch the active BWP from the first BWP to the second BWP, so that the network device can flexibly control the terminal device to use different BWPs. In addition, the terminal device may further determine the actual transmit power when performing uplink transmission by the second BWP according to the output value of the closed-loop power control accumulator of the second BWP.
Preferably, in an embodiment, before sending the BWP handover indication information, the method further includes: and allocating a closed-loop power control accumulator to the first BWP and the second BWP, where the closed-loop power control accumulator of the second BWP is different from the closed-loop power control accumulator of the first BWP, that is, the first BWP and the second BWP may respectively use different closed-loop power control accumulators. In this case, when the active BWP is switched from the first BWP to the second BWP, the closed-loop power control accumulator of the second BWP starts to accumulate power control commands.
Preferably, in an embodiment, before sending the BWP handover indication information, the method further includes: allocating a shared closed-loop power-controlled accumulator for the first BWP and the second BWP. In this case, the shared closed-loop power control accumulator may be reset, specifically to a default value, when the active BWP is switched from the first BWP to the second BWP, or to perform an initialization operation on the shared closed-loop power control accumulator.
An embodiment of the present invention further provides a wireless communication method, which may be executed by a network device, and the method includes: and sending first virtual power headroom reporting indication information, wherein the first virtual power headroom reporting indication information includes an index of a first BWP, and the first virtual power headroom reporting indication information is used for indicating a terminal device to send a virtual power headroom report including the first BWP virtual power headroom.
Preferably, in one embodiment, the method further comprises: and sending second virtual power headroom reporting indication information, where the second virtual power headroom reporting indication information is used to indicate that the terminal device sends a virtual power headroom report including virtual power headroom of all deactivated BWPs, where all deactivated BWPs include the first BWP.
As shown in fig. 6, an embodiment of the present invention further provides a wireless communication method, which may be executed by a network device, and includes the following steps:
allocating a first open-loop power control parameter for a first BWP of a terminal device, wherein the first open-loop power control parameter is used for determining a virtual power headroom of the first BWP when the first BWP is in a deactivated state.
According to the wireless communication method of the embodiment of the invention, the network device may allocate a first open-loop power control parameter to a first BWP of the terminal device, and may determine a virtual power headroom of the first BWP when the first BWP of the terminal device is in a deactivated state.
The wireless communication method according to the embodiment of the present invention is described in detail above with reference to fig. 1 to 6. A terminal device according to an embodiment of the present invention will be described in detail below with reference to fig. 7 and 8.
Fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 7, the terminal device 700 includes:
an output value determining module 701, configured to determine an output value of the closed-loop power control accumulator when the bandwidth portion BWP in the active state is switched from the first BWP to the second BWP;
an actual transmit power determining module 702, configured to determine, according to the output value of the closed-loop power control accumulator, an actual transmit power when performing uplink transmission by using the second BWP.
Optionally, as an embodiment, the determining module 701 determines an output value of the closed-loop power control accumulator, including: and determining an output value of a closed-loop power control accumulator of the second BWP, where the closed-loop power control accumulator of the second BWP is different from the closed-loop power control accumulator of the first BWP, and starting to accumulate power control commands in the closed-loop power control accumulator of the second BWP when the active BWP is switched from the first BWP to the second BWP.
Optionally, as an embodiment, the determining module 701 determines an output value of the closed-loop power control accumulator, including: determining an output value of a closed-loop power control accumulator shared by the first BWP and the second BWP, wherein the shared closed-loop power control accumulator is reset when the active BWP is switched from the first BWP to the second BWP.
Optionally, as an embodiment, the actual transmission power determining module 702 determines the actual transmission power when performing uplink transmission by the second BWP, where the actual transmission power includes at least one of:
determining an actual transmit power for PUSCH transmission over the second BWP;
determining an actual transmit power for PUCCH transmission over the second BWP; and
determining an actual transmit power for SRS transmission by the second BWP.
The terminal device 700 according to the embodiment of the present invention may refer to the flow corresponding to the method 100 according to the embodiment of the present invention, and each module and the other operations and/or functions in the terminal device 700 are respectively for implementing the corresponding flow in the method 100, and are not described herein again for brevity.
Fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 8, the terminal apparatus 800 includes: an actual power headroom determination module 801; and/or, a virtual power headroom determination module 802, wherein,
the actual power headroom determining module 801 is configured to determine an actual power headroom of the second BWP;
the virtual power headroom determining module 802 is configured to determine a virtual power headroom of a first BWP, where the second BWP is in an active state and the first BWP is in a deactivated state.
Optionally, as an embodiment, the actual power headroom determining module 801 determines the actual power headroom of the second BWP, including: determining an actual transmit power of the second BWP; and determining the actual power headroom according to a difference between a second maximum allowed transmit power of the second BWP and the actual transmit power.
Optionally, as an embodiment, the determining the actual transmission power by the actual power headroom determining module 801 includes: and determining the actual transmission power according to an output value of a closed-loop power control accumulator of the second BWP, wherein the closed-loop power control accumulator of the second BWP is different from the closed-loop power control accumulator of the first BWP.
Optionally, as an embodiment, the determining the actual transmission power by the actual power headroom determining module 801 includes: determining the actual transmit power according to an output value of a closed-loop power control accumulator shared by the first BWP and the second BWP.
Optionally, as an embodiment, the virtual power headroom determining module 802 determines the virtual power headroom of the first BWP, including: determining a first open loop power control parameter for the first BWP; determining a virtual transmit power of the first BWP in accordance with the first open-loop power control parameter; and determining a virtual power headroom of the first BWP according to a difference between a first maximum allowed transmit power of the first BWP and the virtual transmit power.
Optionally, as an embodiment, the terminal device 800 further includes: a first closed-loop power control cumulative value determination module to determine a first closed-loop power control cumulative value for the first BWP; thus, the above-mentioned virtual power headroom determining module 802 determines the virtual transmit power of the first BWP, including: determining a virtual transmit power of the first BWP based on the first open-loop power control parameter and the first closed-loop power control accumulation value.
Optionally, as an embodiment, the first open loop power control parameter is determined by at least one of a first open loop power control parameter set number and a first reference signal number for path loss measurement.
Optionally, as an embodiment, the determining module 802 determines the first open-loop power control parameter, including: determining a second open-loop power control parameter set sequence number currently used by the second BWP as the first open-loop power control parameter set sequence number; and/or determining a second reference signal number currently used by the second BWP as the first reference signal number.
Optionally, as an embodiment, the determining module 802 determines the first open-loop power control parameter, including: and determining a preset open loop power control parameter set serial number as the first open loop power control parameter set serial number, and/or determining a preset reference signal number as the first reference signal number.
Optionally, as an embodiment, the virtual power headroom determining module 802 determines the first closed loop power control accumulated value, including: determining an output value of the closed-loop power control accumulator of the second BWP or the shared closed-loop power control accumulator as the first closed-loop power control accumulation value; or determining a preset value as the first closed loop power control accumulated value.
Optionally, as an embodiment, the terminal device 800 further includes: a power headroom sending module, configured to send a virtual power headroom report including the virtual power headroom to a network device.
Optionally, as an embodiment, an index of the first BWP is further included in the virtual power headroom report.
Optionally, as an embodiment, the virtual power headroom report further includes virtual power headrooms of BWPs in the deactivated state, except for the first BWP.
Optionally, as an embodiment, the sending, by the power headroom sending module, a virtual power headroom report including the virtual power headroom to a network device includes: and when receiving the virtual power headroom report indication information from the network device, sending a virtual power headroom report including the first BWP virtual power headroom to the network device.
Optionally, as an embodiment, the power headroom sending module sends, when receiving virtual power headroom report indication information from a network device, a virtual power headroom report including virtual power headroom of all deactivated BWPs to the network device, where all deactivated BWPs include the first BWP.
The terminal device 800 according to the embodiment of the present invention may refer to the flow corresponding to the method 400 according to the embodiment of the present invention, and each module and the other operations and/or functions in the terminal device 800 are respectively for implementing the corresponding flow in the method 400, and are not described herein again for brevity.
Fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in fig. 9, the network device 900 includes:
a switching indication information sending module 901, configured to send BWP switching indication information, where the BWP switching indication information is used to instruct a terminal device to switch an active BWP from a first BWP to a second BWP, and determine an output value of a closed-loop power control accumulator of the second BWP.
Optionally, as an embodiment, the network device 900 further includes: an allocating module 902 may allocate a closed-loop power control accumulator to the first BWP and the second BWP, where the closed-loop power control accumulator of the second BWP is different from the closed-loop power control accumulator of the first BWP.
Optionally, as an embodiment, the allocating module 902 may further allocate a shared closed-loop power control accumulator for the first BWP and the second BWP.
Optionally, as an embodiment, the network device 900 further includes: a reporting indication information sending module, configured to send first virtual headroom reporting indication information, where the first virtual headroom reporting indication information includes an index of the first BWP, and the first virtual headroom reporting indication information is used to indicate the terminal device to send a virtual headroom report including the first BWP virtual headroom.
Optionally, as an embodiment, the reporting indication information sending module may be further configured to send second virtual power headroom reporting indication information, where the second virtual power headroom reporting indication information is used to indicate that the terminal device sends a virtual power headroom report including virtual power headroom of all deactivated BWPs, where all deactivated BWPs include the first BWP.
The network device 900 according to the embodiment of the present invention may refer to the flow corresponding to the method 500 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions described above in the network device 900 are respectively for implementing the corresponding flow in the method 500, and are not described herein again for brevity.
Fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in fig. 10, the network device 1000 includes:
a power control parameter allocating module 1001, configured to allocate a first open-loop power control parameter to a first BWP of a terminal device, where the first open-loop power control parameter is used to determine a virtual power headroom of the first BWP when the first BWP is in a deactivated state.
The network device 1000 according to the embodiment of the present invention may refer to the flow corresponding to the method 600 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions in the network device 1000 are respectively for implementing the corresponding flow in the method 600, and are not described herein again for brevity.
An embodiment of the present invention further provides a network device (not shown), including: a virtual headroom report indicator sending module, configured to send a first virtual headroom report indicator, where the first virtual headroom report indicator includes an index of a first BWP, and the first virtual headroom report indicator is used to indicate a terminal device to send a virtual headroom report including a virtual headroom of the first BWP
Optionally, the virtual headroom reporting indication information sending module may be further configured to send second virtual headroom reporting indication information, where the second virtual headroom reporting indication information is used to indicate that the terminal device sends a virtual headroom report including virtual power headroom of all deactivated BWPs, where all deactivated BWPs include the first BWP.
Fig. 11 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 1100 shown in fig. 11 includes: at least one processor 1101, memory 1102, at least one network interface 1104, and a user interface 1103. The various components in end device 1100 are coupled together by a bus system 1105. It is understood that the bus system 1105 is used to enable communications among the components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 11 as the bus system 1105.
The user interface 1103 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It is to be understood that the memory 1102 in embodiments of the present invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1102 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 1102 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 11021 and application programs 11022.
The operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 11022 contains various applications such as a Media Player (Media Player), a Browser (Browser), etc. for implementing various application services. Programs that implement the methods of embodiments 100 and 200 of the present invention may be included in application programs 11022.
In this embodiment of the present invention, the terminal device 1100 further includes: a computer program stored on the memory 1102 and executable on the processor 1101, the computer program implementing the steps of the method when executed by the processor 1101.
The methods disclosed in the embodiments of the present invention described above may be implemented in the processor 1101 or by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The Processor 1101 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 1101, realizes the steps of the above-described method embodiments.
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 in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. 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 terminal device 1100 can implement each process implemented by the terminal device in the foregoing embodiments, and details are not described here to avoid repetition.
Referring to fig. 12, fig. 12 is a structural diagram of a network side device applied in the embodiment of the present invention, which can implement details of method embodiments 500 and 600, etc., and achieve the same effect. As shown in fig. 12, the network-side device 1200 includes: a processor 1201, a transceiver 1202, a memory 1203 and a bus interface, wherein:
in this embodiment of the present invention, the network side device 1200 further includes: a computer program stored on the memory 1203 and executable on the processor 1201, the computer program, when executed by the processor 1201, implementing the steps of the method.
In fig. 12, the bus architecture may include any number of interconnected buses and bridges, with various circuits linking one or more processors, represented by the processor 1201, and memory, represented by the memory 1203. 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 1202 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.
The processor 1201 is responsible for managing a bus architecture and general processing, and the memory 1203 may store data used by the processor 1201 in performing operations.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes in method embodiment 100, method embodiment 400, method embodiment 500, and method embodiment 600, and can achieve the same technical effects, and therefore, in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (16)

1. A method of wireless communication, the method being performed by a terminal device, the method comprising:
determining an actual power headroom for the second BWP; and/or determining a virtual power headroom of a first BWP, wherein the second BWP is in an active state and the first BWP is in a deactivated state;
the determining the actual power headroom of the second BWP comprises: determining an actual transmit power of the second BWP, determining an actual power headroom of the second BWP based on the actual transmit power;
the determining the actual transmission power of the second BWP comprises:
determining the actual transmission power of the second BWP according to the output value of the closed-loop power control accumulator of the second BWP, wherein the closed-loop power control accumulator of the second BWP is different from the closed-loop power control accumulator of the first BWP; or
And determining the actual transmission power of the second BWP according to the output value of a closed-loop power control accumulator shared by the first BWP and the second BWP.
2. The method of claim 1, wherein said determining an actual power headroom for the second BWP based on the actual transmit power comprises:
determining the actual power headroom according to a difference between a second maximum allowed transmit power of the second BWP and the actual transmit power.
3. The method of claim 2, wherein the determining the virtual power headroom for the first BWP comprises:
determining a first open loop power control parameter for the first BWP;
determining a virtual transmit power of the first BWP in accordance with the first open-loop power control parameter; and
determining a virtual power headroom of the first BWP based on a difference between a first maximum allowed transmit power of the first BWP and the virtual transmit power.
4. The method of claim 3, wherein the method further comprises:
determining a first closed loop power control cumulative value for the first BWP;
wherein the determining the virtual transmit power of the first BWP comprises: determining a virtual transmit power of the first BWP based on the first open-loop power control parameter and the first closed-loop power control accumulation value.
5. The method of claim 4,
the first open-loop power control parameter is determined by at least one of a first open-loop power control parameter set serial number and a first reference signal number used for path loss measurement.
6. The method of claim 5, wherein the determining the first open loop power control parameter comprises:
determining a second open-loop power control parameter set index currently used by the second BWP as the first open-loop power control parameter set index, and/or
Determining a second reference signal number currently used by the second BWP as the first reference signal number.
7. The method of claim 5, wherein the determining the first open loop power control parameter comprises:
determining a preset open-loop power control parameter set serial number as the first open-loop power control parameter set serial number; and/or
And determining a preset reference signal number as the first reference signal number.
8. The method of any of claims 4 to 7, wherein determining the first closed loop power control accumulation value comprises:
determining an output value of the closed-loop power control accumulator of the second BWP or the shared closed-loop power control accumulator as the first closed-loop power control accumulation value; or
And determining a preset value as the first closed loop power control accumulated value.
9. The method of claim 1, wherein the method further comprises:
sending a virtual power headroom report including the virtual power headroom to a network device.
10. The method of claim 9, further comprising an index of the first BWP in the virtual power headroom report.
11. The method of claim 10, wherein the virtual power headroom report further includes virtual power headroom for other deactivated BWPs in addition to the first BWP.
12. The method of any of claims 9 to 11, wherein said sending a virtual power headroom report including the virtual power headroom to a network device comprises:
and when receiving the virtual power headroom report indication information from the network device, sending a virtual power headroom report including the first BWP virtual power headroom to the network device.
13. The method of claim 1, wherein the method further comprises:
when receiving virtual power headroom report indication information from a network device, sending a virtual power headroom report including virtual power headroom of all deactivated BWPs to the network device, where all deactivated BWPs include the first BWP.
14. A terminal device, comprising: an actual power headroom determination module; and/or, a virtual power headroom determination module, wherein,
the actual power headroom determination module is configured to determine an actual power headroom of a second BWP;
the virtual power headroom determining module is configured to determine a virtual power headroom of a first BWP, where the second BWP is in an active state and the first BWP is in a deactivated state;
the actual power headroom determining module is configured to: determining an actual transmit power of the second BWP, determining an actual power headroom of the second BWP based on the actual transmit power;
the actual power headroom determining module is configured to:
determining the actual transmission power of the second BWP according to the output value of the closed-loop power control accumulator of the second BWP, wherein the closed-loop power control accumulator of the second BWP is different from the closed-loop power control accumulator of the first BWP; or
And determining the actual transmission power of the second BWP according to the output value of a closed-loop power control accumulator shared by the first BWP and the second BWP.
15. A terminal device, comprising: memory, processor and 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 according to any one of claims 1 to 13.
16. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 13.
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