CN111601374B

CN111601374B - Power control method and apparatus

Info

Publication number: CN111601374B
Application number: CN201910262602.7A
Authority: CN
Inventors: 姜炜; 纪子超; 彭淑燕; 刘思綦; 刘是枭
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2021-08-24
Anticipated expiration: 2039-04-02
Also published as: WO2020200165A1; CN111601374A

Abstract

The embodiment of the invention discloses a power control method and equipment, which are used for solving the problems that the power control mode is single and the diversified application scenes cannot be adapted in the prior art. The method is executed by the terminal equipment and comprises the following steps: determining a target time domain resource from at least two time domain resources, wherein the at least two time domain resources comprise a first time domain resource and a second time domain resource, and the first time domain resource and the second time domain resource correspond to different power control modes; and controlling the transmission power according to the power control mode corresponding to the target time domain resource. The embodiment of the invention limits different power control modes through different types/kinds of time domain resources, has various and flexible power control modes, and can be widely applied to various application scenes.

Description

Power control method and apparatus

Technical Field

The present invention relates to the field of communications, and in particular, to a power control method and device.

Background

The sidelink (sidelink) refers to a link for performing direct communication between terminal devices without passing through a network device. Long Term Evolution (LTE) sidelink is based on broadcast communication, and although it can be used for basic security-type communication in the car networking (V2X), it is not suitable for higher-level V2X services. New Radio (NR) systems will support more advanced sidelink transmission designs, such as unicast, multicast or multicast, to support more comprehensive traffic types. For the terminal devices, data transmission can be performed between the terminal devices through unicast, multicast or broadcast; meanwhile, data transmission is performed between the terminal device and the network device through an uplink/downlink, and in the related art, in the data transmission process under various application scenarios, power control needs to be performed on the terminal device.

Disclosure of Invention

The embodiment of the invention aims to provide a power control method and equipment, which are used for solving the problems that the power control mode is single and cannot adapt to diversified application scenes in the prior art.

In a first aspect, a power control method is provided, where the method is performed by a terminal device, and the method includes:

determining a target time domain resource from at least two time domain resources, wherein the at least two time domain resources comprise a first time domain resource and a second time domain resource, and the first time domain resource and the second time domain resource correspond to different power control modes;

and controlling the transmission power according to the power control mode corresponding to the target time domain resource.

In a second aspect, a power control method is provided, the method being performed by a network device, the method comprising:

sending configuration information, wherein the configuration information is used for configuring time domain resources pattern by the terminal equipment;

the time domain resource pattern includes at least two time domain resources, the at least two time domain resources include a first time domain resource and a second time domain resource, and the first time domain resource and the second time domain resource correspond to different power control modes.

In a third aspect, a terminal device is provided, which includes:

a resource determining module, configured to determine a target time domain resource from at least two time domain resources, where the at least two time domain resources include a first time domain resource and a second time domain resource, and the first time domain resource and the second time domain resource correspond to different power control modes;

and the power control module is used for controlling the sending power according to the power control mode corresponding to the target time domain resource.

In a fourth aspect, a network device is provided, the network device comprising:

a sending module, configured to send configuration information, where the configuration information is used for a terminal device to configure a time domain resource pattern;

In a fifth aspect, a terminal device is provided, the terminal device 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 aspect.

In a sixth 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 second aspect.

In a seventh aspect, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the method according to the first and second aspects.

In the embodiment of the present invention, because at least two different types/kinds of time domain resources are provided, and the first time domain resource and the second time domain resource correspond to different power control modes, when the terminal device performs data transmission, a target time domain resource can be determined from the at least two time domain resources, and the transmission power is controlled according to the power control mode corresponding to the target time domain resource. The embodiment of the invention limits different power control modes through different types/kinds of time domain resources, has various and flexible power control modes, and can be widely applied to various application scenes.

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 power control method according to one embodiment of the invention;

fig. 2 to 5 are schematic diagrams of time domain resource patterns according to various embodiments of the present invention;

FIG. 6 is a schematic flow chart diagram of a power control method according to 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 block diagram of a network device according to one embodiment of the present invention;

fig. 9 is a schematic structural diagram of a terminal device according to another embodiment of the present invention;

fig. 10 is a schematic structural diagram of a network device according to 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.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Long Term Evolution (LTE) sidelink system, a New Radio (NR) sidelink system, or a subsequently evolved communication 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 drive test Unit (RSU), a portable device (portable Equipment), a vehicle (vehicle), and the like, 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 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, called an Evolved node B (eNB or eNodeB), in a third Generation (3G) network, called a node B (node B), or a network device in a later Evolved communication system, etc., although the words are not limiting.

As shown in fig. 1, an embodiment of the present invention provides a power control method 100, which may be performed by a terminal device, and includes the following steps:

s102: a target time domain resource is determined from at least two time domain resources.

The at least two time domain resources at least include a first time domain resource and a second time domain resource, and the first time domain resource and the second time domain resource correspond to different power control modes (processes).

Optionally, before the step S102 is executed, the terminal device may first determine a time domain resource format pattern, where the time domain resource pattern includes at least two time domain resources, and therefore, in this step, the terminal device may determine the target time domain resource based on the time domain resource pattern.

The time domain resource pattern at least includes the first time domain resource and the second time domain resource, the first time domain resource corresponds to the first power control mode, the second time domain resource corresponds to the second power control mode, and the first power control mode and the second power control mode are different.

As shown in fig. 2, fig. 2 is a schematic diagram of a time domain resource pattern, where the time domain resource pattern includes two time domain resources, namely a resource R1 and a resource R2, respectively, where the resource R1 and the resource R2 may be referred to as two types/kinds of time domain resources. The resource R1 corresponds to a first power control scheme, the resource R2 corresponds to a second power control scheme, and the first power control scheme and the second power control scheme are different from each other, for example, the first power control scheme is based on maximum transmission power, and the second power control scheme is based on transmission power transmission determined by sidelink path loss, or the like.

It should be noted that the at least two time domain resources mentioned in S102 may also include more types of time domain resources, for example, a third time domain resource, a fourth time domain resource, and so on. In a preferred embodiment, each type of time domain resource corresponds to one power control manner, and the power control manners corresponding to different types of time domain resources are different from each other.

It is to be understood that, in other embodiments, two or more different types of time domain resources may correspond to the same power control manner, and/or one type of time domain resource may correspond to multiple different power control manners, and so on.

In this embodiment, the S102 may specifically determine the target time domain resource from the time domain resource pattern according to the service type and the service type of the data to be sent. For example, for sidelink broadcast service, in order to keep higher receiving quality for more receiving end terminal devices, in this step, the resource R1 may be determined from the time domain resource pattern, and the power control manner corresponding to the resource R1 may be transmission with the maximum transmission power; for example, for sidelink unicast Service, and the Quality of Service (QoS) requirement of the data to be transmitted is high, in order to ensure the reception Quality of the receiving end, in this step, the resource may be determined as resource R2 from the time domain resource pattern, and the power control method corresponding to resource R2 may be transmission power determined according to sidelink path loss.

In a preferred embodiment, the time domain resource pattern includes resource R1, resource R2, resource R3, resource R4, resource R5; wherein,

the power transmission method corresponding to the resource R1 is: transmitting according to the maximum transmission power or preset constant transmission power;

the power transmission method corresponding to the resource R2 is: transmitting according to the transmission power determined by sidelink path loss;

the power transmission method corresponding to the resource R3 is: transmitting according to the determined transmission power of the downlink path loss;

the power transmission method corresponding to the resource R4 is: sending according to the smaller value of the sending power determined by the sidelink path loss and the sending power determined by the downlink path loss; and

the power transmission method corresponding to the resource R5 is: and transmitting according to the larger value of the transmitting power determined by the sidelink path loss and the transmitting power determined by the downlink path loss.

Optionally, as an embodiment, the at least two time domain resources mentioned in S102 correspond to at least two different power control manners one to one, that is, the power control manners corresponding to different types of time domain resources are different from each other.

Optionally, the power control parameters (such as the open-loop power target value and the path loss compensation factor) of the different power control manners may be configured independently, and the different power control manners may also correspond to different power control parameters (values) respectively.

S104: and controlling the transmission power according to the power control mode corresponding to the target time domain resource.

By determining the target time domain resource in S102, the step may control the transmission power in a power control manner corresponding to the target time domain resource on the determined target time domain resource, so as to perform data (for example, including a channel, a signal, etc.) transmission.

For example, as shown in fig. 2, if the type of the target time domain resource determined in S102 is R1, S104 may control the transmission power in the power control manner corresponding to the time domain resource R1 on the first time domain resource R1 of the 5 time domain resources R1 shown in fig. 1, so as to transmit data.

In the power control method provided in the embodiment of the present invention, the data transmitted with the transmission power may include at least one of the following:

physical Sidelink Control Channel (PSCCH);

physical Sidelink data Channel (psch);

physical Sidelink Feedback Channel (PSFCH);

physical Sidelink Broadcast Channel (PSBCH);

demodulation Reference Signal (DMRS);

Phase-Tracking Reference Signal (PTRS);

channel State Information Reference Signal (CSI-RS);

a synchronization reference signal; and

synchronization Signal Block (Synchronization Signal & PBCH Block, SSB).

Based on the above scheme provided by the embodiment of the present invention, the high power region and the low power region may also be divided in a time domain by a resource pattern, that is, the high power region and the low power region correspond to different power control modes, respectively. Thus, in the sidelink communication system, for the receiving terminal equipment with high quality requirement of the sidelink, the sending terminal equipment can send in a high-power area, and the receiving and sending quality of the sidelink is ensured; for terminal equipment with high Uu service quality requirement, the terminal equipment at the transmitting end transmits in a low-power area so as to reduce the overlarge uplink interference caused by sidelink. The embodiment of the invention can realize interference coordination at a system level and can improve the overall performance of a communication system.

In S102 of the foregoing embodiment, it is mentioned that the terminal device may determine the target time domain resource from at least two time domain resources included in the time domain resource pattern, and a specific real-time manner will be described in several embodiments below.

1) And the terminal equipment determines the target time domain resource from the time domain resource pattern according to the auxiliary information.

The auxiliary information may include at least one of: the type of service (of the data to be sent); a service period; a service packet size; sidelink loading; channel Busy Rate (CBR)/Channel occupancy rate (CR); unicast/broadcast/multicast traffic ratio or number; QoS; a service priority; service time delay; reliability of the service; geographical location information of the terminal device; and the rate of movement of the terminal device.

Specifically, for example, the terminal device selects resource R1 according to whether the service is broadcast; selecting resource R2 based on whether the traffic is unicast; or selecting resource R1 or resource R2, etc. according to the QoS of the service.

2) And the terminal equipment determines the target time domain resource from the time domain resource pattern according to the received indication information.

Before the embodiment is executed, the terminal device may further receive indication information from the network device, where the indication information may be used by the terminal device to determine the target time domain resource from at least two time domain resources included in the time domain resource pattern.

3) And the terminal equipment determines a target time domain resource from the time domain resource pattern according to the type of the data to be sent.

In this embodiment, some specific signals or channels are transmitted only on time domain resources that are restricted to a specific type. Specifically, for example, if the data to be transmitted is the secondary link synchronization resource block SL-SSB, a first time domain resource is determined from the time domain resource pattern, and a power control method corresponding to the first time domain resource includes: and transmitting according to the determined transmission power of the downlink path loss.

For another example, if the data to be transmitted is PSCCH, a second time domain resource is determined from the time domain resource pattern, and a power control manner corresponding to the second time domain resource includes: the transmission is based on the maximum transmission power or the transmission power determined based on the sidelink path loss, which in this example is determined based on the minimum communication distance/range.

For another example, if the data to be transmitted is a unicast psch, a third time domain resource is determined from the time domain resource pattern, and a power control manner corresponding to the third time domain resource includes: and transmitting according to the determined transmission power of the sidelink path loss.

For another example, if the data to be sent is unicast PSFCH, a third time domain resource is determined from the time domain resource pattern, and a power control manner corresponding to the third time domain resource includes: and transmitting according to the determined transmission power of the sidelink path loss.

Optionally, in this embodiment, the unicast pschs and the corresponding unicast PSFCHs use the same type of time domain resources. For example, if the type of the time domain resource used by the unicast pscch sent by terminal device 1 to terminal device 2 is resource R1, the type of the time domain resource used by the unicast PSFCH fed back to terminal device 1 by terminal device 2 should also be resource R1.

4) And the terminal equipment determines the target time domain resource from the time domain resource pattern according to the type of the time domain resource used for the initial data transmission.

The embodiment can be applied to the data retransmission scene. In this embodiment, the types of time domain resources used for initial data transmission and retransmission are the same.

In the above embodiments, the time domain resource pattern and the determined target time domain resource are mentioned, and the time domain resource pattern and the determined target time domain resource are described in detail in the following embodiments.

In an embodiment, the target time domain resource is included in a time domain resource format pattern, where the time domain resource pattern includes at least two time domain resources, which may be specifically shown in fig. 2.

In another embodiment, the target time domain resource is a resource pool, and each of the at least two time domain resources mentioned above may be a resource pool.

In another embodiment, the target time domain resource is a target time domain resource pattern, and each of the at least two time domain resources mentioned above is a time domain resource pattern, and the plurality of time domain resources patterns are included in the resource pool.

For the aforementioned specific format of the time domain resource pattern, the time domain unit (or referred to as time domain granularity) of the time domain resource pattern may be a slot; a frame; subframe; the symbol; or time units such as milliseconds.

A basic time domain unit of the determined target time domain resource, such as R1 in a square grid in fig. 2, may be specifically a minimum time domain unit of the time domain resource pattern; or, the determined one basic time domain unit of the single target time domain resource is a set of a plurality of minimum time domain units of the time domain resource pattern. Specifically, for example, the minimum time domain unit of the time domain resource pattern is a subframe, and a basic time domain unit of the target time domain resource is also a subframe; for another example, the minimum time domain unit of the time domain resource pattern is a time slot, one basic time domain unit of the target time domain resource is a subframe, and one subframe includes two time slots.

The time domain resource pattern in the foregoing embodiment may specifically be preconfigured; network device configuration; or agreed upon.

If the time domain resource pattern is configured by the network device, before determining the target time domain resource from at least two time domain resources in S102 in the several embodiments, the method further includes the following steps:

and sending auxiliary information, wherein the auxiliary information is used for the network equipment to configure the time domain resource pattern.

Specifically, the auxiliary information sent by the terminal device to the network device may include at least one of the following: a service type; a service period; a service packet size; sidelink loading; CBR/CR; unicast/broadcast/multicast traffic ratio or number; QoS; a service priority; service time delay; reliability of the service; geographical location information of the terminal device; and the rate of movement of the terminal device.

The power control methods described in the above embodiments are all for the terminal device at the transmitting end, and optionally, in the sidelink system, different execution methods may be used for the terminal device at the receiving end.

For different types of time domain resources, for example, a first time domain resource and a second time domain resource, the receiving end terminal device may perform radio link measurement according to the first time domain resource and the second time domain resource, respectively, perform radio link measurement according to the first time domain resource to obtain a first measurement result, and perform radio link measurement according to the second time domain resource to obtain a second measurement result. And the first time domain resource and the second time domain resource correspond to different measurement behaviors respectively.

Optionally, the first time domain resource corresponds to a first measurement behavior, the second time domain resource corresponds to a second measurement behavior, and the measurement parameter of the first measurement behavior and the measurement parameter of the second measurement behavior are configured independently.

The receiving end terminal device may also respectively feed back or process the measurement results for the different types of time domain resources, where the measurement results may be at least one of the following:

reference Signal received Power (Reference Signal Receiving Power RSRP); reference Signal Receiving Quality (RSRQ); a Reference Signal Strength Indicator (RSSI); Signal-to-Interference plus Noise Ratio (SINR); and Channel State Information (CSI).

Optionally, the threshold values respectively corresponding to the first time domain resource and the second time domain resource are configured independently, where the threshold values include at least one of:

a Radio Link Monitoring (RLM) threshold;

an RSRP threshold value; and

the RSSI threshold value.

Optionally, the receiving end terminal device may further perform radio link detection according to a first time domain resource and a second time domain resource, respectively, to obtain a first detection result and a second detection result, where the first time domain resource and the second time domain resource correspond to different detection behaviors; the receiving end terminal device may further respectively feed back or process the first detection result and the second detection result.

To illustrate the power control method of the present invention in detail, the following description will be made with reference to several specific embodiments.

The first embodiment is as follows:

taking a frame structure with a subcarrier interval of 15KHz as an example, the time domain resource granularity of the time domain resource pattern is a slot, and the time domain resource pattern comprises two different types of time domain resources. An example format of the time domain resource pattern is as follows:

as shown in fig. 2, the Pattern1 includes first N slots as one time domain resource R1, second X-N slots as another time domain resource R2, and X is the slot number of a radio frame (for example, sssssuuuuuu, S may be used to represent the time domain resource for determining the transmission power according to the sidelink path loss, and U may be used to represent the time domain resource for determining the transmission power according to the downlink path loss).

Pattern 2: as shown in fig. 3, an odd number of slots is one time domain resource R1, and an even number of slots is another time domain resource R2. (e.g., SUSUSUSUSU). Of course, the slots of even number may be the time domain resource R1, and the slots of odd number may be the time domain resource R2.

Pattern 3: as shown in fig. 4, the time domain resource pattern is in an irregular format of any scale. (e.g., 3S2U1S 4U).

In the embodiment of the invention, the time domain resource pattern selectable by the terminal equipment has various formats, so that the method is further suitable for diversified application scenes.

Example two:

the base station configures a time domain resource pattern for the terminal device based on the auxiliary information reported by the terminal device (UE), where a format of the configured time domain resource pattern is shown in fig. 5, and the auxiliary information refers to the description in the foregoing embodiments.

In this embodiment, assuming that the UE1 is close to the base station, the measured downlink path loss (pathloss) between the UE and the base station is small, which is 60 dB; the UE2 is far away from the base station, and pathloss between the UE2 and the base station is large and is 120 dB; the UE3 is farther away from the base station and the pathloss between the measurement and the base station is large, 110 dB.

At a certain moment, UE1 has a sidelink broadcast service, UE2 has an uplink service, UE3 has a sidelink unicast service, and the receiving UE is close to the originating UE.

The UE2 selects a resource on resource R2 based on its traffic type, Uu traffic, and adjusts its transmit power based on pathloss with the base station.

The UE1 selects resources in the resource set R1 to transmit information with the maximum transmit power based on its service type, sidelink broadcast service, to ensure that more UEs can receive the sidelink broadcast service and will not cause excessive interference to Uu in R2.

The UE3 selects the resource on the resource R2 based on the self service type, namely sidelink unicast service, and performs power control, wherein the power control mode is as follows:

firstly, based on downlink pathloss, adjusting the transmission power P1 to 20 dBm;

then, based on sidelink path, the UE3 performs power adjustment to obtain transmission power P2 as 16 dBm;

min { P1, P2} -16 dBm is selected as the final transmission power.

Example three:

taking a frame structure with a subcarrier interval of 15KHz as an example, the time domain resource granularity of the time domain resource pattern is a slot, and the time domain resource pattern comprises two different types of time domain resources. The format of the time domain resource pattern is shown in fig. 2, and the time domain resource pattern is agreed by the protocol.

In this embodiment, the UE first determines the time domain resource pattern in a manner predefined by the protocol.

The UE1 has periodic broadcast service with high QoS requirement, and selects to use the maximum transmitting power of 23dBm for data transmission on the resource R1 to ensure the receiving quality.

The UE2 has periodic unicast traffic with high QoS requirements, selects to determine the transmission power by open loop power control based on the following formula on the resource R1,

in the above formula, P_CMAX23dBm for maximum transmit power;

m is the allocated bandwidth in units of resource blocks RB;

PL is sidelink pathloss;

P₀and α is indicated by high level parameters, specifically an open loop power target value and a sidelink pathloss compensation factor.

Example four:

taking a frame structure with a subcarrier interval of 15KHz as an example, the time domain granularity of the time domain resource pattern is a slot, and the time domain resource pattern includes two different types of time domain resources. A format of the time domain resource pattern is shown in fig. 2, and the time domain resource pattern is configured by the network device.

The UE1 has broadcast service with low QoS requirement, and selects to perform open loop power control on the resource R2 based on pathloss with the base station to ensure that the interference to Uu is in a reasonable range.

The UE2 has unicast traffic with low QoS requirement, and selects to jointly perform open loop power control on the resource R2 based on pathloss and sidelink pathloss with the base station to determine the transmission power, the process is as follows:

first, based on pathloss with the base station, the UE2 adjusts the transmit power P1;

then, the UE2 uses the sending power P1 to send, obtains sidelink pathloss based on RSRP fed back by the receiving end, and adjusts power based on the sidelink pathloss to obtain P2;

and selecting min { P1, P2} as the final transmission power.

Example five:

In mode 2a mode (UE autonomous resource selection mode), the UE receiving on both the high power resource R1 and the low power resource R2 performs detection sensing, and the RSRP or RSSI detection results may be very different on different types of time domain resources.

For UE1, the distances from UE2 and UE3 to UE1 are not much different, but UE2 transmits on resource R1 with a transmit power of 23 dBm; the UE3 transmits on resource R2 with a transmit power of 8 dBm.

The RSRP of UE2 is-43 dBm and the RSRP of UE3 is-62 dBm measured by UE 1.

In this embodiment, different RSRP thresholds are configured for different types of time domain resources, such as RSRP threshold at resource R1 being-40 dBm, RSRP threshold at resource R2 being-60 dBm, RSRP at UE2 being 3dBm lower than the threshold, RSRP at UE3 being 2dBm lower than the threshold. So UE1 can estimate that the pathloss of UE2 and UE3 to UE1 do not differ much.

The power control method according to the embodiment of the present invention is described in detail above with reference to fig. 1 to 5. A power control method according to another embodiment of the present invention will be described in detail with reference to fig. 6. It is to be understood that the interaction between the network device and the terminal device described from the network device side is the same as that described at the terminal device side in the method shown in fig. 1, and the related description is appropriately omitted to avoid redundancy.

Fig. 6 is a schematic flow chart of an implementation of a power control method according to an embodiment of the present invention, which can be applied to a network device. As shown in fig. 6, the method 600 includes:

s602: sending configuration information, wherein the configuration information is used for configuring time domain resources pattern by the terminal equipment;

Optionally, in this embodiment of the present invention, the network device may further receive the auxiliary information, and perform domain resource patterning on the terminal device based on the auxiliary information, and for detailed description of the auxiliary information, refer to the foregoing embodiments.

Optionally, in this embodiment of the present invention, the network device may further send indication information, where the indication information is used to indicate the terminal device to determine the target time domain resource from at least two time domain resources of the time domain resource pattern.

The power control 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.

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:

a resource determining module 702, configured to determine a target time domain resource from at least two time domain resources, where the at least two time domain resources include a first time domain resource and a second time domain resource, and the first time domain resource and the second time domain resource correspond to different power control manners;

the power control module 704 may be configured to control the transmission power according to a power control manner corresponding to the target time domain resource.

Optionally, as an embodiment, the power control manners corresponding to the first time domain resource and the second time domain resource include the following two manners:

transmitting according to the maximum transmission power or preset constant transmission power;

transmitting according to the transmission power determined by sidelink path loss;

transmitting according to the determined transmission power of the downlink path loss;

sending according to the smaller value of the sending power determined by the sidelink path loss and the sending power determined by the downlink path loss; and

and transmitting according to the larger value of the transmitting power determined by the sidelink path loss and the transmitting power determined by the downlink path loss.

Optionally, as an embodiment, the at least two time domain resources correspond to at least two different power control manners one to one.

Optionally, as an embodiment, the target time domain resource is included in a time domain resource format pattern, where the time domain resource pattern includes the at least two time domain resources; or

The target time domain resource comprises a target resource pool, and the at least two time domain resources are resource pools respectively; or

The target time domain resource comprises target time domain resource patterns, the at least two time domain resources are at least two time domain resource patterns respectively, and the at least two time domain resource patterns are contained in a resource pool.

Optionally, as an embodiment, the target time domain resource is included in a time domain resource pattern, and a time domain unit of the time domain resource pattern is:

a slot; a frame; subframe; the symbol; or milliseconds.

Optionally, as an embodiment, the target time domain resource includes a minimum time domain unit of the time domain resource pattern; or

The target time domain resource comprises a set of a plurality of smallest time domain units of the time domain resource pattern.

Optionally, as an embodiment, the target time domain is included in a time domain resource pattern, and the resource determining module 702 may be further configured to determine the time domain resource pattern.

Optionally, as an embodiment, the time domain resource pattern is:

pre-configured;

network device configuration; or

Agreed upon.

Optionally, as an embodiment, the time domain resource pattern is configured by a network device, and the terminal device 700 further includes a sending module, which may be configured to:

and sending first auxiliary information, wherein the first auxiliary information is used for the network equipment to configure the time domain resource pattern.

Optionally, as an embodiment, the resource determining module 702 may be configured to determine, according to the second auxiliary information, a target time domain resource from at least two time domain resources.

Optionally, as an embodiment, the first auxiliary information and/or the second auxiliary information includes at least one of:

a service type; a service period; a service packet size; sidelink loading; CBR/CR; unicast/broadcast/multicast traffic ratio or number; QoS; a service priority; service time delay; reliability of the service; geographical location information of the terminal device; and the rate of movement of the terminal device.

Optionally, as an embodiment, the time domain resource pattern is configured by a network device, and the terminal device 700 further includes a receiving module, configured to:

receiving indication information, wherein the indication information is used for the terminal equipment to determine the target time domain resource from the at least two time domain resources;

wherein the determining the target time domain resource from the at least two time domain resources comprises: and determining the target time domain resource from at least two time domain resources according to the indication information.

Optionally, as an embodiment, the resource determining module 702 may be configured to determine, if the data to be sent is a secondary link synchronization resource block SL-SSB, a first time domain resource from at least two time domain resources, where a power control manner corresponding to the first time domain resource includes: transmitting according to the determined transmission power of the downlink path loss;

if the data to be sent is PSCCH, determining a second time domain resource from at least two time domain resources, wherein a power control mode corresponding to the second time domain resource comprises the following steps: transmitting according to the maximum transmission power or the transmission power determined according to the sidelink path loss, wherein the sidelink path loss is determined according to the minimum communication distance/range; or

If the data to be sent is unicast PSSCH or unicast PSFCH, determining a third time domain resource from at least two time domain resources, wherein a power control mode corresponding to the third time domain resource comprises the following steps: and transmitting according to the determined transmission power of the sidelink path loss.

Optionally, as an embodiment, the unicast pschs and the corresponding unicast PSFCHs use the same type of time domain resources.

Optionally, as an embodiment, the resource determining module 702 may be configured to determine, according to a type of a time domain resource used for initial transmission of target data, a target time domain resource from at least two time domain resources;

and the types of the time domain resources used by the initial transmission and the retransmission of the target data are the same.

Optionally, as an embodiment, the first time domain resource corresponds to a first power control manner, the second time domain resource corresponds to a second power control manner, and the first power control manner and the second power control manner correspond to different power control parameter values.

Optionally, as an embodiment, the terminal device 700 further includes a measurement module, which is configured to perform radio link measurement according to the first time domain resource and the second time domain resource to obtain a first measurement result and a second measurement result, respectively;

wherein the first time domain resource and the second time domain resource correspond to different measurement behaviors.

Optionally, as an embodiment, the first time domain resource corresponds to a first measurement behavior, and the second time domain resource corresponds to a second measurement behavior;

the measurement parameters of the first measurement behavior and the measurement parameters of the second measurement behavior are configured independently.

Optionally, as an embodiment, the terminal device 700 further includes a feedback processing module, which may be configured to respectively feed back or process the first measurement result and the second measurement result.

Optionally, as an embodiment, the first measurement result and/or the second measurement result includes at least one of:

RSRP; RSRQ; RSSI; SINR; and CSI.

Optionally, as an embodiment, threshold values respectively corresponding to the first time domain resource and the second time domain resource are configured independently, where the threshold values include at least one of:

an RLM threshold value;

an RSRP threshold value; and

the RSSI threshold value.

Optionally, as an embodiment, the terminal device 700 further includes a detection module, configured to perform radio link detection according to the first time domain resource and the second time domain resource, respectively, to obtain a first detection result and a second detection result, where the first time domain resource and the second time domain resource correspond to different detection behaviors; and feeding back or processing the first detection result and the second detection result respectively.

Optionally, as an embodiment, the data transmitted at the transmission power includes at least one of:

PSCCH；

PSSCH；

PSFCH；

PSBCH；

DMRS；

PTRS；

CSI-RS；

a synchronization reference signal; and

SSB。

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 unit/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 can achieve the same or equivalent technical effects, and for brevity, no further description is provided herein.

Fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in fig. 8, the network device 800 includes:

a sending module 802, configured to send configuration information, where the configuration information is used for a terminal device to configure a time domain resource pattern;

Optionally, in this embodiment of the present invention, as shown in fig. 8, the network device 800 may further include a receiving module 804, configured to receive the auxiliary information, and perform domain resource patterning on the terminal device based on the auxiliary information, and for detailed descriptions of the auxiliary information, refer to the foregoing embodiments.

Optionally, in this embodiment of the present invention, the sending module 802 may be further configured to send indication information, where the indication information is used by the terminal device to determine a target time domain resource from at least two time domain resources of the time domain resources pattern.

The network device 800 according to the embodiment of the present invention may refer to the flow corresponding to the method 600 of the embodiment of the present invention, and each unit/module and the other operations and/or functions in the network device 800 are respectively for implementing the corresponding flow in the method 600 and achieving the same or equivalent technical effects, and for brevity, no further description is provided herein.

Fig. 9 is a block diagram of a terminal device of another embodiment of the present invention. The terminal apparatus 900 shown in fig. 9 includes: at least one processor 901, memory 902, at least one network interface 904, and a user interface 903. The various components in the terminal device 900 are coupled together by a bus system 905. It is understood that the bus system 905 is used to enable communications among the components. The bus system 905 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. 9 as bus system 905.

The user interface 903 may include, among other things, a display, a keyboard, a pointing device (e.g., a mouse, trackball), a touch pad, or a touch screen.

It is to be understood that the memory 902 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may 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 902 of the systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 902 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 9021 and application programs 9022.

The operating system 9021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is configured to implement various basic services and process hardware-based tasks. The application 9022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing the method of an embodiment of the present invention may be included in application 9022.

In this embodiment of the present invention, the terminal device 900 further includes: a computer program stored on the memory 902 and executable on the processor 901, the computer program, when executed by the processor 901, implementing the steps of the method 100 as follows.

The method disclosed in the above embodiments of the present invention may be applied to the processor 901, or implemented by the processor 901. The processor 901 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 901. The Processor 901 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. 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 902, and the processor 901 reads the information in the memory 902, and combines the hardware to complete the steps of the above method. In particular, the computer readable storage medium has stored thereon a computer program, which when executed by the processor 901, implements the steps of the embodiments of the method 100 as described above.

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 900 can implement the processes implemented by the terminal device in the foregoing embodiments, and can achieve the same or equivalent technical effects, and for avoiding repetition, the details are not described here.

Referring to fig. 10, fig. 10 is a block diagram of a network device applied in the embodiment of the present invention, which can implement the details of method embodiment 600 and achieve the same effects. As shown in fig. 10, the network device 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, wherein:

in this embodiment of the present invention, the network device 1000 further includes: a computer program stored on the memory 1003 and executable on the processor 1001, the computer program, when executed by the processor 1001, implementing the steps of the method 600.

In fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 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 1002 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 1001 is responsible for managing a bus architecture and general processes, and the memory 1003 may store data used by the processor 1001 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 the method embodiment 100 and the method embodiment 600, and can achieve the same technical effects, and in order to avoid repetition, the computer program is not described herein again. 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

1. A method of power control, the method being performed by a terminal device, the method comprising:

determining a target time domain resource from at least two time domain resources according to one of the following conditions: the second auxiliary information, the type of data to be transmitted, and the type of time domain resource used for initial transmission of target data, where the at least two time domain resources include a first time domain resource and a second time domain resource, and the first time domain resource and the second time domain resource correspond to different power control modes; the second auxiliary information includes at least one of: a service type; a service period; a service packet size; sidelink loading; channel busy rate CBR/channel occupancy CR; unicast/broadcast/multicast traffic ratio or number; quality of service, QoS; a service priority; service time delay; reliability of the service; geographical location information of the terminal device; and a rate of movement of the terminal device;

2. The method of claim 1, wherein the power control modes corresponding to the first time domain resource and the second time domain resource include any two of:

3. The method of claim 1, wherein the at least two time domain resources correspond one-to-one to at least two different power control modes.

4. The method according to any one of claims 1 to 3,

the target time domain resource is contained in a time domain resource format pattern, and the time domain resource pattern comprises the at least two time domain resources;

5. The method of claim 4, wherein the target time domain resource is included in a time domain resource pattern, and a time domain unit of the time domain resource pattern is:

a slot; a frame; subframe; the symbol; or milliseconds.

6. The method of claim 5,

the target time domain resource comprises a minimum time domain unit of the time domain resource pattern; or

7. The method of claim 4, wherein the target time domain is included in a time domain resource pattern, and wherein before determining the target time domain resource from the at least two time domain resources, the method further comprises:

and determining the time domain resource pattern.

8. The method of claim 7, wherein the time domain resource pattern is:

pre-configured;

network device configuration; or

Agreed upon.

9. The method of claim 8, wherein the time domain resource pattern is configured by a network device, and wherein before determining the target time domain resource from the at least two time domain resources, the method further comprises:

10. The method of claim 9, wherein the first assistance information comprises at least one of:

a service type; a service period; a service packet size; sidelink loading; channel busy rate CBR/channel occupancy CR; unicast/broadcast/multicast traffic ratio or number; quality of service, QoS; a service priority; service time delay; reliability of the service; geographical location information of the terminal device; and the rate of movement of the terminal device.

11. The method of claim 1, wherein prior to determining the target time domain resource from the at least two time domain resources, the method further comprises:

12. The method of claim 1, wherein the determining the target time domain resource from among the at least two time domain resources comprises:

if the data to be sent is a sidelink synchronization resource block SL-SSB, determining a first time domain resource from at least two time domain resources, wherein a power control mode corresponding to the first time domain resource comprises the following steps: transmitting according to the determined transmission power of the downlink path loss;

if the data to be sent is a physical sidelink control channel PSCCH, determining a second time domain resource from at least two time domain resources, wherein a power control mode corresponding to the second time domain resource comprises the following steps: transmitting according to the maximum transmission power or the transmission power determined according to the sidelink path loss, wherein the sidelink path loss is determined according to the minimum communication distance/range; or

If the data to be sent is a unicast physical side link data channel PSSCH or a unicast physical side link feedback channel PSFCH, determining a third time domain resource from at least two time domain resources, wherein a power control mode corresponding to the third time domain resource comprises the following steps: and transmitting according to the determined transmission power of the sidelink path loss.

13. The method of claim 12,

the unicast pschs and the corresponding unicast PSFCHs use the same type of time domain resources.

14. The method of claim 1,

15. The method of claim 1, wherein the first time domain resource corresponds to a first power control scheme, the second time domain resource corresponds to a second power control scheme, and the first power control scheme and the second power control scheme correspond to different power control parameter values.

16. The method of claim 1, wherein the method further comprises:

performing radio link measurement according to the first time domain resource and the second time domain resource to obtain a first measurement result and a second measurement result respectively;

17. The method of claim 16, wherein the first time domain resource corresponds to a first measurement behavior and the second time domain resource corresponds to a second measurement behavior;

18. The method of claim 16, wherein the method further comprises:

feeding back or processing the first measurement result and the second measurement result, respectively.

19. The method of claim 18, wherein the first measurement and/or the second measurement comprises at least one of:

reference signal received power, RSRP; reference signal received quality, RSRQ; a Reference Signal Strength Indication (RSSI); signal to noise ratio SINR; and channel state information CSI.

20. The method of claim 16, wherein threshold values corresponding to the first time domain resource and the second time domain resource are configured independently, and the threshold values include at least one of:

a radio link monitoring, RLM, threshold;

an RSRP threshold value; and

the RSSI threshold value.

21. The method of claim 1, wherein the method further comprises:

respectively performing wireless link detection according to the first time domain resource and the second time domain resource to obtain a first detection result and a second detection result, wherein the first time domain resource and the second time domain resource correspond to different detection behaviors;

and feeding back or processing the first detection result and the second detection result respectively.

22. The method of claim 1, wherein the data transmitted at the transmit power comprises at least one of:

PSCCH；

PSSCH；

PSFCH；

a physical sidelink broadcast channel PSBCH;

demodulating a reference signal (DMRS);

a phase tracking reference signal PTRS;

a channel state information reference signal, CSI-RS;

a synchronization reference signal; and

SSB。

23. a method of power control, the method being performed by a network device, the method comprising:

the time domain resource pattern comprises at least two time domain resources, the at least two time domain resources comprise a first time domain resource and a second time domain resource, and the first time domain resource and the second time domain resource correspond to different power control modes; the terminal device is configured to determine a target time domain resource from the at least two time domain resources according to one of the following conditions: the second auxiliary information, the type of data to be transmitted and the type of time domain resources used for the initial transmission of the target data; the second auxiliary information includes at least one of: a service type; a service period; a service packet size; sidelink loading; channel busy rate CBR/channel occupancy CR; unicast/broadcast/multicast traffic ratio or number; quality of service, QoS; a service priority; service time delay; reliability of the service; geographical location information of the terminal device; and the rate of movement of the terminal device.

24. A terminal device, comprising:

a resource determining module, configured to determine a target time domain resource from at least two time domain resources according to one of the following conditions: the second auxiliary information, the type of data to be transmitted, and the type of time domain resource used for initial transmission of target data, where the at least two time domain resources include a first time domain resource and a second time domain resource, and the first time domain resource and the second time domain resource correspond to different power control modes; the second auxiliary information includes at least one of: a service type; a service period; a service packet size; sidelink loading; channel busy rate CBR/channel occupancy CR; unicast/broadcast/multicast traffic ratio or number; quality of service, QoS; a service priority; service time delay; reliability of the service; geographical location information of the terminal device; and a rate of movement of the terminal device;

25. A network device, comprising:

26. 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 22.

27. A network 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 as claimed in claim 23.

28. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 23.