WO2024041309A1

WO2024041309A1 - Communication method and apparatus

Info

Publication number: WO2024041309A1
Application number: PCT/CN2023/109853
Authority: WO
Inventors: 李晨琬; 鲁振伟; 吴毅凌
Original assignee: 华为技术有限公司
Priority date: 2022-08-23
Filing date: 2023-07-28
Publication date: 2024-02-29
Also published as: CN117693008A

Abstract

The present application provides a communication method and apparatus, for use in implementing power control of a terminal device having a relatively low measurement capability. The method comprises: receiving first signaling from a network device, the first signaling comprising a first transmission power value of the terminal device, and sending second signaling to the network device at the first transmission power value, wherein the first signaling is a selection instruction, or the first signaling is a paging instruction, or the first signaling is query signaling. Compared with indicating target receiving power, indicating a specific transmission power value can simplify a power control process, such that a base station can control the power of the terminal device having a weak measurement capability.

Description

A communication method and device

Cross-references to related applications

This application claims priority to the Chinese patent application submitted to the Intellectual Property Office of the People's Republic of China on August 23, 2022, with application number 202211016348.0 and application title "A communication method and device", the entire content of which is incorporated herein by reference. Applying.

Technical field

The present application relates to the field of communication technology, and in particular, to a communication method and device.

Background technique

The working principle of passive radio frequency identification (RFID) technology is: the tag converts the wireless signal emitted by the reader into energy, and uses this energy to drive itself to work.

In the development of communication, in order to save the power consumption of terminal equipment, it is proposed to introduce RFID technology into the communication network to realize the passive Internet of Things. That is, the base station can integrate the capabilities of the card reader. The base station can send wireless signals to tags such as passive or semi-passive terminal equipment. The terminal equipment can use the signal conversion ability to drive itself to work, such as sending data packets to the base station, etc. . The structural design of the tag is usually relatively simple, with low cost and poor measurement capabilities, so it cannot cooperate with the base station for power control.

Contents of the invention

This application provides a communication method and device for implementing power control on terminal equipment with low measurement capabilities.

In the first aspect, this application provides a communication method. The execution subject of the method may be a terminal device with low measurement capabilities such as a tag, or it may be a chip or circuit. The method includes: receiving first signaling from a network device, the first signaling including a first transmit power value of the terminal device, and sending second signaling to the network device with the first transmit power value. The first signaling is a selection instruction, or the first signaling is a paging instruction, or the first signaling is a query signaling.

In the embodiment of the present application, by indicating a specific transmit power value, compared with indicating the target received power, the power control process can be simplified, so that the base station can implement power control for terminal equipment with weak measurement capabilities.

In a possible design, the first signaling includes a first transmit power value of the terminal device, including: the first signaling includes a first transmit power value corresponding to the first coverage level and a second transmit power value corresponding to the second coverage level. value. Through the above design, network equipment can indicate corresponding transmit power values according to different coverage levels, enabling more precise power control.

In a possible design, the first signaling is sent with a first number of repetitions, and the first transmission power value corresponds to the first number of repetitions. Through the above design, the corresponding transmission power value can be indicated according to different repetition times, and more precise power control can be achieved.

In one possible design, if the first signaling corresponds to the number of repetitions 1, the transmission power value is indicated as 1, and if the first signaling corresponds to the number of repetitions as 2, the transmission power value is indicated as 2. If the number of repetitions 1 is greater than the number of repetitions 2, the transmission power The value 1 is greater than the transmit power value 2.

In a possible design, the method further includes: receiving a third signaling from the network device, the third signaling instructing the terminal device to adjust the transmit power to a third transmit power value; and sending a fourth signal to the network device with the third transmit power value. signaling. Through the above design, the transmission power of the terminal device can be adjusted, thereby reducing the probability of transmission failure of the terminal device.

In a possible design, the third signaling includes a third transmit power value, or the third signaling includes a difference between the third transmit power value and the first transmit power value.

In a possible design, the third signaling instructs the terminal device to adjust the transmit power to the third transmit power value, including: the third signaling instructs the transmit power corresponding to the first coverage level to adjust to the third transmit power value. Through the above design, network equipment can adjust corresponding transmit power values according to different coverage levels, achieving more precise power control.

In a possible design, the method further includes: receiving fifth signaling from the network device, the fifth signaling instructs the terminal device to report a power headroom report (PHR); and reporting the PHR to the network device. The above design helps the network device adjust/instruct the transmit power value of the terminal device.

In a possible design, the second signaling is a random access request or message A in the random access process or message 3 in the random access process.

In a possible design, the first signaling also indicates the terminal device type corresponding to the first signaling, and the terminal device conforms to the terminal device type. Through the above design, targeted power control can be achieved.

In one possible design, the terminal equipment type includes semi-passive standard tags and/or actively generated carrier tags.

In the second aspect, this application provides a communication method. The execution subject of the method may be a device with read and write capabilities such as a network device, or may be a chip or circuit. The method includes: sending the first signaling, the first signaling including the first transmission power value of the terminal device, the first signaling being a selection instruction, or the first signaling being a paging instruction, or the first signaling being a query. Signaling; receiving second signaling from the terminal device.

In a possible design, sending the first signaling includes: sending the first signaling with a first number of repetitions, where the first transmission power value corresponds to the first number of repetitions. Through the above design, the corresponding transmission power value can be indicated according to different repetition times, and more precise power control can be achieved.

In a possible design, the method further includes: detecting only the preamble in the second signaling, or detecting that the power of the preamble is less than a threshold; sending the third signaling to the terminal device, and the third signaling indicates The terminal device adjusts the transmit power to the third transmit power value. Through the above design, the transmission power of the terminal device can be adjusted, thereby reducing the probability of transmission failure of the terminal device.

In a possible design, the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value, including: the third signaling further instructs the transmit power corresponding to the first coverage level to adjust to the third transmit power value. Through the above design, network equipment can adjust corresponding transmit power values according to different coverage levels, achieving more precise power control.

In a possible design, the method further includes: sending a fifth signaling to the terminal device, the fifth signaling instructing the terminal device to report the PHR; and receiving the PHR from the terminal device. The above design helps the network device adjust/instruct the transmit power value of the terminal device.

In the third aspect, this application provides a communication method. The execution subject of the method can be a terminal device with low measurement capabilities such as a tag, or a chip or circuit. The method includes: sending first signaling to the network device with a first power, the first signaling being a random access request; receiving second signaling from the network device, the second signaling being used to adjust the transmission power of the terminal device; Resend the first signaling to the network device with the second power, and the second power is higher than the first power.

The above method can realize power control of the terminal device by the network device by instructing the terminal device to adjust the transmission power during the random access process.

In a possible design, the second signaling is also used to indicate re-random access. Through the above design, when the network device determines that the transmit power of the terminal device is low and cannot successfully decode, it can instruct the terminal device to reconnect, so that the terminal device does not have to wait for other terminal devices to complete the access before trying to access, thus reducing the Random access delay of terminal equipment.

In a possible design, the second signaling is used to adjust the transmit power of the terminal device, including: the second signaling indicates the second power; or the second signaling indicates the difference between the second power and the first power. ; Or, the second signaling indicates increasing the transmit power of the terminal device.

In a possible design, the second signaling also indicates access resources in the time domain of the terminal device. The above helps the terminal device to perform random access again, and the random access delay of the terminal device can be reduced.

In a possible design, the method further includes: receiving a third signaling from the network device, the third signaling instructing the terminal device to report the PHR; and reporting the PHR to the network device. The above design helps the network device adjust/instruct the transmit power value of the terminal device.

In the fourth aspect, this application provides a communication method. The execution subject of the method may be a device with read and write capabilities such as a network device, or may be a chip or circuit. The method includes: receiving first signaling from a terminal device, where the first signaling is a random access request; and sending second signaling to the terminal device, where the second signaling instructs the terminal device to send the first signaling with a second power.

In a possible design, before sending the second signaling, the method further includes: detecting only the preamble in the first signaling; or detecting that the power of the preamble in the first signaling is less than a threshold value. Through the above design, when the network device determines that the transmit power of the terminal device is low When decoding cannot be successful, the transmit power of the terminal device can be adjusted in time.

In a possible design, the method further includes: sending a third signaling to the terminal device, the third signaling instructing the terminal device to report the PHR; and receiving the PHR from the terminal device. The above design helps the network device adjust/instruct the transmit power value of the terminal device.

In the fifth aspect, this application provides a communication method. The execution subject of the method can be a terminal device with low measurement capabilities such as a tag, or a chip or circuit. The method includes: receiving first signaling from the network device, the first signaling indicating reporting of PHR; and sending the PHR to the network device.

When the network device decides to support operations such as frequency division, it needs to determine the power information of the terminal device. In the above method, the network device instructs the terminal device to send PHR, which is conducive to further power control and reduces the interference caused by multiple terminal devices transmitting uplink frequency division data. The probability.

In a possible design, the first signaling is a selection instruction, or the first signaling is a paging instruction, or the first signaling is a query signaling.

In one possible design, sending the PHR to the network device includes: sending a random access request to the network device, where the random access request carries a random number and the PHR.

In one possible design, sending PHR to the network device includes: sending a random access preamble to the network device; receiving a response message of the random access preamble from the network device; sending uplink data to the network device, and the uplink data carries the PHR. .

In a possible design, the first signaling instructs the terminal device to report the PHR, including: the first signaling instructs one or more terminal devices to report the PHR, and the one or more terminal devices include terminal devices. The signaling overhead can be saved through the above design.

In a sixth aspect, the present application provides a communication method. The execution subject of the method may be a device with read and write capabilities such as a network device, or may be a chip or circuit. The method includes: sending first signaling, the first signaling instructs the terminal device to report the PHR; and receiving the PHR from the terminal device.

In one possible design, receiving the PHR reported by the terminal device includes: receiving a random access request from the terminal device, where the random access request carries a random number and the PHR.

In one possible design, receiving the PHR reported by the terminal device includes: receiving a random access preamble from the terminal device; sending a response message of the random access preamble to the terminal device; receiving uplink data from the terminal device. Carry a PHR.

In a seventh aspect, the present application further provides a communication device having any method for implementing the first, third or fifth aspect. The communication device can be implemented by hardware, or can also be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In a possible design, the communication device includes: a processor, the processor is configured to support the communication device to perform the corresponding functions of the terminal device in the method shown above. The communications device may also include memory, which storage may be coupled to the processor, which holds program instructions and data necessary for the communications device. Optionally, the communication device further includes an interface circuit, which is used to support communication between the communication device and a device such as a reader/writer.

For example, the communication device has the function of implementing the method provided in the first aspect, and the processor may be configured to: receive the first signaling from the network device through the interface circuit, where the first signaling includes the first transmission power value of the terminal device. , and sends the second signaling to the network device with the first transmission power value through the interface circuit. Wherein, the first signaling is a selection instruction, or the first signaling is a paging instruction, or the first The signaling is query signaling.

For another example, the communication device has the function of implementing the method provided in the third aspect, and the processor may be configured to: send the first signaling to the network device with the first power through the interface circuit, where the first signaling is a random access request; Receive the second signaling from the network device through the interface circuit, the second signaling is used to adjust the transmission power of the terminal device; resend the first signaling to the network device with the second power through the interface circuit, the second power is higher than the first power.

For another example, the communication device has the function of implementing the method provided in the fifth aspect, and the processor may be configured to: receive the first signaling from the network device through the interface circuit, and the first signaling instruction reports the PHR; and report the PHR to the network through the interface circuit. The device sends the PHR.

In a possible design, the communication device includes corresponding functional modules, respectively used to implement the steps in the above method. Functions can be implemented by hardware, or by hardware executing corresponding software. Hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the structure of the communication device includes a processing unit (or processing module) and a communication unit (or communication module). These units can perform the corresponding functions in the above method examples. For details, see the first aspect or the third aspect or The description of the method provided in the fifth aspect will not be repeated here.

For example, the communication device has the function of implementing the method provided in the first aspect. Communication unit, used to communicate with the reader/writer. A processing unit configured to: receive a first signaling from the network device through the communication unit, the first signaling including a first transmit power value of the terminal device, and send a second signal to the network device with the first transmit power value through the communication unit. signaling. The first signaling is a selection instruction, or the first signaling is a paging instruction, or the first signaling is a query signaling.

For another example, the communication device has the function of implementing the method provided in the third aspect. Communication unit, used to communicate with the reader/writer. A processing unit configured to: send first signaling to the network device with a first power through the communication unit, where the first signaling is a random access request; and receive second signaling from the network device through the communication unit, where the second signaling is a random access request. To adjust the transmission power of the terminal device; resend the first signaling to the network device with a second power through the communication unit, and the second power is higher than the first power.

For another example, the communication device has the function of implementing the method provided in the fifth aspect. Communication unit, used to communicate with the reader/writer. The processing unit is configured to: receive the first signaling from the network device through the communication unit, the first signaling indicating reporting of the PHR; and send the PHR to the network device through the communication unit.

In an eighth aspect, the present application also provides a communication device, which has the function of implementing any of the methods provided in the second, fourth or sixth aspect. The communication device can be implemented by hardware, or can also be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In a possible design, the communication device includes: a processor configured to support the communication device in performing the corresponding functions of the reader/writer in the method shown above. The communications device may also include memory, which storage may be coupled to the processor, which holds program instructions and data necessary for the communications device. Optionally, the communication device further includes an interface circuit, which is used to support communication between the communication device and terminal equipment and other equipment.

For example, the communication device has the function of implementing the method provided in the second aspect, and the processor may be configured to: send the first signaling through the interface circuit, the first signaling including the first transmission power value of the terminal device, the first signaling It is a selection instruction, or the first signaling is a paging instruction, or the first signaling is query signaling; the second signaling from the terminal device is received through the interface circuit.

For example, the communication device has the function of implementing the method provided in the fourth aspect, and the processor may be configured to: receive the first signaling from the terminal device through the interface circuit, where the first signaling is a random access request; The terminal device sends second signaling, and the second signaling instructs the terminal device to send the first signaling with second power.

For example, the communication device has the function of implementing the method provided in the sixth aspect. The processor may be configured to: send the first signaling through the interface circuit, and the first signaling instructs the terminal device to report the PHR; receive the PHR from the terminal device through the interface circuit. PHR.

In a possible design, the structure of the communication device includes a processing unit (or processing module) and a communication unit (or first communication module). These units can perform the corresponding functions in the above method examples. For details, see the second aspect or the fourth aspect. The descriptions in the method provided by the aspect or the sixth aspect will not be repeated here.

For example, the communication device has the function of implementing the method provided in the second aspect, and the processing unit may be configured to: send the first signaling through the communication unit, the first signaling including the first transmission power value of the terminal device, the first signaling It is a selection instruction, or the first signaling is a paging instruction, or the first signaling is query signaling; the second signaling from the terminal device is received through the communication unit.

For example, the communication device has the function of implementing the method provided in the fourth aspect, and the processing unit may be configured to: receive the first signaling from the terminal device through the communication unit, where the first signaling is a random access request; The terminal device sends second signaling, and the second signaling instructs the terminal device to send the first signaling with second power.

For example, the communication device has the function of implementing the method provided in the sixth aspect, and the processing unit may be configured to: send the first signaling through the communication unit, the first signaling instructs the terminal device to report the PHR; and receive the PHR from the terminal device through the communication unit. PHR.

In a ninth aspect, a communication device is provided, including a processor and an interface circuit. The interface circuit is configured to receive signals from other communication devices other than the communication device and transmit them to the processor or to send signals from the processor. For other communication devices other than the communication device, the processor is used to implement the method in the aforementioned first aspect, third aspect, or fifth aspect as well as any possible design through logic circuits or executing code instructions.

In a tenth aspect, a communication device is provided, including a processor and an interface circuit. The interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or to send signals from the processor. For other communication devices other than the communication device, the processor is used to implement the method in the aforementioned second aspect, fourth aspect, sixth aspect and any possible design through logic circuits or executing code instructions.

In an eleventh aspect, a computer-readable storage medium is provided. Computer programs or instructions are stored in the computer-readable storage medium. When the computer program or instructions are executed by a processor, the aforementioned first to sixth aspects are realized. in any aspect and in any possible design.

A twelfth aspect provides a computer program product that stores instructions. When the instructions are run by a processor, any one of the foregoing first to sixth aspects and the method in any possible design are implemented.

A thirteenth aspect provides a chip system, which includes a processor and may also include a memory for implementing any one of the foregoing first to sixth aspects and the method in any possible design. The chip system can be composed of chips or include chips and other discrete devices.

A fourteenth aspect provides a communication system, which includes the device (such as a terminal device) described in the first aspect and the device (such as a network device) described in the second aspect.

A fifteenth aspect provides a communication system, which includes the device (such as a terminal device) described in the third aspect and the device (such as a network device) described in the fourth aspect.

A sixteenth aspect provides a communication system, which includes the device (such as a terminal device) described in the fifth aspect and the device (such as a network device) described in the sixth aspect.

Description of drawings

Figure 1 is a schematic architectural diagram of an RFID system according to an embodiment of the present application;

Figure 2 is an architectural schematic diagram of a communication system according to an embodiment of the present application;

Figure 3 is an architectural schematic diagram of a communication system according to an embodiment of the present application;

Figure 4 is an architectural schematic diagram of a communication system according to an embodiment of the present application;

Figure 5 is a schematic architectural diagram of a communication system according to an embodiment of the present application;

Figure 6 is a schematic architectural diagram of a communication system according to an embodiment of the present application;

Figure 7 is a schematic flow chart of a communication method according to an embodiment of the present application;

Figure 8 is a schematic diagram of random access according to an embodiment of the present application;

Figure 9 is a schematic diagram of random access according to an embodiment of the present application;

Figure 10 is a schematic flow chart of a communication method according to an embodiment of the present application;

Figure 11 is a schematic flow chart of a communication method according to an embodiment of the present application;

Figure 12 is a schematic structural diagram of a communication device according to an embodiment of the present application;

Figure 13 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In the following, some terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1) Paging signaling: used to page one or more terminal devices.

2) Select signaling: used to select or page one or more tags for random access.

3) Query signaling: used to trigger tags to access the network. Query signaling can also be used to indicate resource configuration for label random access. For example, Query signaling may include parameter Q, which is used by the tag to calculate the maximum number of sending time slots and randomly select an access time slot. The tag can calculate the maximum access time slot range based on the parameter Q, such as [0, 2Q-1]. The tag can randomly select a value within this range and save it as counter. Whenever the tag receives a Query signaling (the Query signaling received again can be called QueryRep), the value of counter is updated to counter-1. When counter is equal to 0, the tag can send a random number, such as a 16-bit random number (random number 16, RN16). It should be noted that if the corresponding time slot after the reader sends the Query is 0, a terminal with an initial counter value of 0 will be generated and can initiate access after receiving the Query.

4) RFID technology: After the tag enters the magnetic field, it receives the radio frequency signal from the reader and uses the energy obtained from the induced current to send out the product information stored in the chip (such as passive tags or passive tags, etc.). For example, please refer to Figure 1, which is a schematic architectural diagram of an RFID system. The RFID system includes a reader/writer (also called a reader), a tag, and an antenna. It can be understood that the antennas include reader antennas and tag antennas.

A reader/writer is a device that can acquire and process data from electronic tags. It can be used as a standalone device or can be embedded in other devices or systems. The reader can send radio frequency signals to the tag through the reader antenna to query or write data to the tag. The reader/writer can also be connected to other devices (such as the computer in Figure 1) through the communication interface, thereby transmitting data stored locally by the reader/writer or data obtained from the tags to other devices. The embodiments of this application do not limit the specific form of the reader/writer. For example, the reader/writer can be a terminal device, or a network device (such as a network device), or a device with reading and writing functions, or other possible devices. It should be understood that the computer in Figure 1 is not necessary for the system, so it is illustrated with a dotted line.

A tag, also known as an electronic tag or RFID tag, is a miniature wireless transceiver device, which mainly includes a built-in tag antenna, coupling element and chip. The chip has storage space that can support the reader to read or write tag data. After the tag receives the radio frequency signal sent by the reader through the tag antenna, it can couple the radio frequency signal through the coupling element, and then in the coupling channel, it can provide energy to the tag's chip and pass the tag data stored in the chip through the tag. The antenna feeds back to the reader. Tags can include active tags, passive tags and semi-active tags. Passive tags can also be called passive Internet of Things (IOT) devices. A tag can also be viewed as a terminal device.

5) The random access process of tags is as shown below A1~A:

A1, the reader/writer sends select signaling, where the select signaling can contain tag memory information and is used to select or page one or more tags for random access.

A2, the reader/writer sends Query signaling to indicate the resource configuration of tag random access. For example, Query signaling may include parameter Q, which is used by the tag to calculate the maximum number of sending time slots and randomly select an access time slot.

A3. The paged tag (that is, the tag that matches the tag memory information contained in the select signaling) randomly selects a random access opportunity or access time slot to send a random access request to the reader.

A4, if the reader successfully receives the random access request, it will feed back an acknowledgment message (ACK).

6) Coverage level: When the network device sends the signaling, the number of repetitions used to send the signaling to terminal devices with different coverage levels is different. For example, for terminal devices with farther coverage, the network device can use a larger number of repetitions to send signaling, and for terminal devices with closer coverage, the network device can use a smaller number of repetitions to send signaling. In this application, a larger coverage level may mean that the coverage is further away, and the corresponding number of repetitions is greater. It may also be that a larger coverage level indicates that the coverage is closer, and the corresponding number of repetitions is smaller. There is no specific limitation here.

7) Terminal equipment can also be called terminal. The terminal equipment in the embodiment of this application may also be called user equipment (user equipment, UE), etc. Terminals can be widely used in various scenarios, such as Internet of things (IOT), device-to-device (D2D), vehicle to everything (V2X) communication, machine communication (machine -type communication (MTC), Internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. . The embodiments of this application do not limit the specific technology and specific equipment form used by the terminal.

In the embodiment of the present application, the device used to implement the functions of the terminal device may be a terminal device, or may be a device that can support the terminal device to implement the function, such as a chip system, and the device may be installed in the terminal device. In the embodiments of this application, the chip system may be composed of chips, or may include chips and other discrete devices. Among the technical solutions provided by the embodiments of the present application, the technical solution provided by the embodiments of the present application is described by taking the device for realizing the functions of the terminal being a terminal device as an example.

8) Network equipment: a radio access network (RAN) node (or device) that connects terminal equipment to a wireless network, which can also be called a base station. Currently, some examples of RAN nodes are: evolving Node B (gNB), transmission and reception points (transmission reception point, TRP), evolved Node B (eNB), radio network controller (RNC), Node B (Node B, NB), base station controller (BSC) ), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), base band unit (BBU), or wireless fidelity (Wifi) Access point (AP), etc. In addition, in a network structure, the network device may include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN device including a CU node and a DU node. The RAN equipment including CU nodes and DU nodes separates the protocol layer of the eNB in the long term evolution (LTE) system. Some of the protocol layer functions are placed under the centralized control of the CU, and the remaining part or all of the protocol layer functions are Distributed in DU, CU centrally controls DU.

In the embodiments of this application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or" describes the relationship between associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the related objects are in an "or" relationship. "At least one of the following" or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .

And, unless otherwise stated, ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the size, content, order, and timing of multiple objects. , priority or importance, etc. For example, the first signaling and the second signaling are only used to distinguish different signalings, but do not indicate differences in content, priority or importance of the two signalings.

The foregoing has introduced some terms and concepts involved in the embodiments of the present application, and the technical features involved in the embodiments of the present application will be introduced below.

Tags support microwatt level or hundreds of microwatt level power consumption and cannot support complex designs. Therefore, the tag's measurement capability is weak. If the tag is introduced into the communication network, the base station cannot control the power of the tag, resulting in poor communication performance. Difference.

For example, in a communication network, the base station controls the power of the terminal device in the following way: the base station sends a system message, which contains the target received power and the power ramping parameter powerRampingStep. According to the instruction information sent by the base station, the terminal device adjusts the transmission power to meet the target reception power configured by the base station, and sends a preamble. If the terminal device does not receive the random access response sent by the base station for the preamble, it adjusts the transmission power: add powerRampingStep to the previous transmission power and send the preamble again. However, for terminal equipment with low measurement capabilities such as tags, it is impossible to determine the power lost during the transmission process, so it is impossible to determine how to adjust the transmit power to meet the target base received power indicated by the reader. Therefore, this solution is not suitable for terminal equipment with low measurement capabilities.

For another example, due to the inability to control the power of the tag, the tag may have low transmission power, causing the reader to be unable to receive the random access message of the tag. If the random access of the tag fails, the reader needs to be configured with a new parameter Q, and then the tag accesses based on the new parameter Q, resulting in a longer random access delay for the tag.

For another example, since the power of the tag cannot be controlled, if the tag supports uplink frequency division to send data, that is, different tags can choose different frequencies for access, and multiple tags can send random signals on different frequencies of the same time domain resource. number (RN16). Multiple tags sending data at the same time may cause interference, causing the reader to be unable to successfully decode.

Based on this, embodiments of the present application provide a communication method and device for implementing power control on terminal equipment with weak measurement capabilities, such as tags. Among them, the method and the device are based on the same inventive concept. Since the principles of the method and the device to solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated parts will not be repeated.

The communication method provided by this application can be applied to various communication systems, for example, it can be the Internet of Things (IoT), narrowband Internet of things (NB-IoT), long term evolution (long term evolution) , LTE), it can also be the fifth generation (5th generation, 5G) communication system, it can also be a hybrid architecture of LTE and 5G, or it can be 6G or new communication systems that will emerge in future communication development, etc. The communication system can also be a machine to machine (M2M) network, machine type communication (MTC) or other networks. The communication system can also be a passive IoT network communication system.

By way of example, the communication method provided by the embodiment of the present application can be applied to a communication system including a reader/writer and a tag. It should be noted that “reader/writer” and “tag” are only exemplary names. In the embodiment of this application, the reader/writer can be understood as a communication device that manages tags, such as the network device in Figure 2 and Figure 3 below. Terminal device 2 in Figure 4, IAB node in Figure 4, network device 1 in Figure 5 or Figure 6, etc. In the embodiment of this application, the tag can be understood as a terminal device with weak measurement capabilities. For ease of description, tags and readers are taken as examples below.

In a possible example, in a base station direct connection scenario, the tag is a terminal device and the reader/writer is a network device. For example, the reader/writer can be a macro station, a pole station, a micro base station, etc., between the tag and the reader/writer. Uplink and downlink communication is possible. as shown in picture 2. Among them, tags and readers The transmission between them can belong to the uu interface, that is, air interface transmission.

In another possible example, in the sideline communication scenario, the tag is terminal device 1 and the reader is terminal device 2. The reader can be connected to network equipment, such as macro stations, pole stations, micro base stations, etc. Connected etc. Uplink and downlink communication can be carried out between the reader and the tag, as shown in Figure 3. Among them, the transmission between the tag and the reader can be regarded as the transmission between terminal devices, that is, side link transmission.

In another possible example, in the integrated access and backhaul (IAB) scenario, the tag is the terminal device, the reader is the IAB node, and uplink and downlink can be performed between the reader and the network device. Communication, the tag can communicate with the reader in the downlink direction, and the tag can communicate with the network device in the uplink direction, as shown in Figure 4. Among them, the transmission between the reader and the network device, and between the tag and the network device can be UU interface, that is, air interface transmission.

In another possible example, in the downlink assistance scenario, the tag is terminal device 1, the reader is network device 1, the reader and the tag can communicate uplink, and the terminal device 2 can assist network device 1 and the tag. Perform downstream transmission. The reader/writer or terminal device 2 can provide a carrier wave for the tag. As shown in Figure 5. Among them, the transmission between the network device 1 and the terminal device may belong to the uu interface, that is, air interface transmission.

Optionally, this scenario may also include a network device 2, and the network device 2 may perform uplink and downlink transmission with the terminal device.

In another possible example, in the uplink auxiliary scenario, the tag is terminal device 1, the reader/writer is network device 1, and downlink communication can be performed between the reader/writer and the tag. The terminal device 2 can assist the network device 1 in uplink transmission with the tag, and the reader/writer or the terminal device 2 can provide a carrier wave for the tag. As shown in Figure 6. Among them, the transmission between the network device 1 and the terminal device may belong to the uu interface, that is, air interface transmission.

The embodiments of the present application can also be used in other communication systems, as long as the communication system includes devices that communicate based on RFID technology. Figures 2 to 6 are only schematic diagrams, and do not specifically limit the type of communication system, as well as the number, type, deployment method, etc. of equipment included in the communication system.

It should be noted that in this application, the communication between the tag and the reader/writer is described as uplink/downlink only for the convenience of description. This application does not limit the name of the communication between the tag and the reader/writer.

The communication method provided by the embodiments of this application can be applied to industry, enterprises, agriculture, animal husbandry, forestry, etc. In one example, it can be applied to the management of products in industry. For example, by carrying tags on products, automatic scanning, statistics and other management of products can be achieved. In another example, it can be applied to the management of industrial equipment (such as forklifts, trailers, automated guided vehicles (AGV), etc.). For example, by installing tags on the equipment, the equipment can be managed. Management of lifecycle, utilization, location, etc. In another example, it can be applied to the management of farmed products (such as pigs, cattle, sheep, chickens, etc.) in the animal husbandry industry. For example, by fixing labels on the farmed products, the statistics of the farmed products can be managed. . In another example, it can be used to manage trees in forestry. For example, by fixing tags on trees, tree statistics and other management can be achieved.

The network architecture and business scenarios described in the embodiments of this application are for the purpose of explaining the technical solutions of the embodiments of this application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

"Signaling" in the embodiment of this application can also be described as "command" or "message" or "information" or "instruction" and so on. For example, "first signaling" can also be described as "first command", or "first message" or "first information" or "first instruction" and so on.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The embodiments of the present application can be applied to the scenarios shown in the above-mentioned Figures 2 to 6. For ease of description, the following describes the scenario shown in Figure 2, where the reader is a network device and the label is a terminal device. The terminal device may be a terminal device with weak measurement capabilities.

Refer to Figure 7, which is a schematic flow chart of a communication method provided by this application. The method includes:

S701. The network device sends the first signaling to the terminal device. Correspondingly, the terminal device receives the first signaling from the network device.

The first signaling includes a first transmission power value or a first transmission power range of the terminal device. For convenience of description, the following description takes the transmission power value as an example.

For example, the first signaling is a selection instruction, or the first signaling is a paging instruction, or the first signaling is a query signaling. Currently, in the communication network, the network device indicates the target received power to the terminal device through a system message, and the terminal device that receives the system message adjusts the transmit power to meet the target received power configured by the network device. However, this application indicates the transmit power value through the selection command/paging command/query command, which can cause the terminal device selected (or paging, or triggered) by the command to adjust the transmit power value, while other terminal devices do not adjust the transmit power value. This enables group adjustment.

As an example, the transmit power value indicated by the first signaling may be the transmit power used by the terminal device for the first signaling or data in the random access process, for example, a random access request or a message in the random access process. A or message 3 in the random access message. The random access process here can be understood as the process of establishing a communication connection relationship between the terminal device and the network device. That is, after completing this process, the terminal device and the network device can transmit data. Specifically, the first piece of signaling or data may be a random access preamble or a random number. Optionally, if the terminal device receives a signaling to adjust (or update) the transmit power value, it can adjust the transmit power value and then send subsequent signaling or data. If the terminal device does not receive a signal to adjust (or update) the transmit power value, signaling, the terminal device can maintain the transmit power value indicated by the first signaling to send data.

In a possible implementation, the first signaling includes transmit power values corresponding to one or more coverage levels, where the one or more coverage levels include coverage levels corresponding to the above-mentioned terminal equipment. For example, assuming that the coverage level corresponding to the above-mentioned terminal device is the first coverage level, the first signaling may include a first transmission power value corresponding to the first coverage level. Optionally, the first signaling may also include a second transmission power value corresponding to the second coverage level, a transmission power value corresponding to the third coverage level, etc. This application does not limit the number of coverage levels indicated by the first signaling.

As an example, the first signaling can be used to adjust the transmission power of other terminal devices to be accessed (for example, terminal devices to be accessed after the above-mentioned terminal device), that is, the first signaling is applicable to other terminal devices to be accessed. equipment. Alternatively, the first signaling can also be used to adjust the transmission power of the above-mentioned terminal device and other terminal devices to be accessed (for example, a terminal device accessed after the above-mentioned terminal device), that is, the first signaling is applicable to the above-mentioned terminal device. and other terminal devices to be accessed. Alternatively, the first signaling may also be used to adjust the transmit power of the above-mentioned terminal device, that is, the first signaling is applicable to the above-mentioned terminal device.

Optionally, in the above implementation manner, the terminal device can obtain its own coverage level in advance, for example, pre-configure the coverage level, or determine its own coverage level by the number of repetitions of signaling received before the first signaling, or , you can also judge the coverage level and so on through measurement. The terminal device can also obtain its own coverage level through other methods, which are not specifically limited here.

In another possible implementation, the first signaling is sent with a first number of repetitions, and the first transmission power value corresponds to the first number of repetitions. The number of repetitions may include at least one of the following: the number of bit repetitions, the number of symbol repetitions, the number of code block repetitions, the number of information repetitions, etc.

In an exemplary description, if the number of repetitions corresponding to the first signaling is greater, the included transmission power is greater. It can be understood that if the first signaling corresponds to the repetition number 1, it indicates the transmission power value 1, and when the first signaling corresponds to the repetition number 2, it indicates the transmission power value 2. If the repetition number 1 is greater than the repetition number 2, the transmission power value 1 is greater than Transmit power value 2.

In another possible implementation, the first signaling is sent in a first coverage level configuration, and the first transmission power value corresponds to the first coverage level.

In an exemplary explanation, it is assumed that the smaller the coverage level, the better the communication performance between the terminal device and the network device, or the closer the distance between the terminal device and the network device. If the coverage level corresponding to the first signaling is larger, the included transmission power is larger. It can be understood that if the first signaling corresponds to coverage level 1, it indicates a transmit power value of 3, and if the first signaling corresponds to coverage level 2, it indicates a transmit power value of 4. If coverage level 1 is greater than coverage level 2, then the transmit power value 3 is greater than Transmit power value 4.

S702: The terminal device sends the second signaling to the network device with the first transmission power value. Correspondingly, the network device receives the second signaling from the terminal device.

For example, the second signaling may be a random access request or message A in the random access process or message 3 in the random access process. For example, the second signaling may include a random number and/or a preamble, or the second signaling may be a random access preamble. Among them, the random number can be RN16, etc.

Alternatively, the second signaling may also be a message used to transmit uplink data. Specifically, the second signaling may include the uplink data and a preamble.

Optionally, if the network device successfully receives the second signaling, the network device may send a response message to the terminal device. As shown in Figure 8. In an optional solution, the terminal device can send uplink data after receiving the response message.

Optionally, if the network device fails to receive the second signaling successfully, for example, the network device only detects the preamble in the second signaling. Specifically, it may only detect the preamble sent together with the random number (or uplink data). preamble; or, the network device detects that the transmission power of the second signaling is low, for example, the network device detects that the power of the preamble is less than the threshold value, where the preamble can be and random number (or uplink data) The preamble sent together can also be a random access preamble. The network device may send third signaling to the terminal device, and the third signaling instructs the terminal device to adjust the transmit power to the third transmit power value.

Optionally, after receiving the third signaling, the terminal device may send the second signaling again (or re) with the third transmission power value. As shown in Figure 9.

The terminal device may also send fourth signaling to the network device with a third transmission power value. Wherein, the third transmit power value may be a third signal For example, the third signaling may include a third transmission power value. Alternatively, the third transmit power value may also be determined by the terminal device based on the third signaling. For example, the third signaling includes the difference between the third transmit power value and the first transmit power value. The terminal device may determine the third transmit power value based on the first transmit power value. The transmit power value and the difference determine the third transmit power value; for another example, the third signaling only indicates to increase the transmit power value, and the terminal device determines that the increased transmit power value is the third transmit power value. In this method, The amplitude of the improvement of the terminal device may be determined by the terminal device, may be specified by the protocol, or may be pre-configured, and is not specifically limited here.

In a possible implementation, the third signaling may also indicate that the transmission power corresponding to the first coverage level is adjusted to the third transmission power value. Alternatively, the third signaling instructs the terminal device of the first coverage level to adjust the transmission power to the third transmission power value.

As an exemplary description, "adjusting the transmission power value" in this application can also be described as "updating the transmission power value" or "increasing the transmission power value" and so on.

For example, the third signaling may be Query signaling, QueryRep signaling, or configuration signaling.

In a possible implementation, the above-mentioned first signaling and/or third signaling may be applicable to the first type of terminal equipment. For example, the first signaling and/or the third signaling may be applicable to terminal devices with weak measurement capabilities. Terminal equipment, such as passive tags, semi-passive tags or actively generated carrier tags, etc. Of course, the above-mentioned first signaling and/or third signaling may also be applicable to other types of terminal equipment, and will not be listed one by one here. Optionally, the type of terminal equipment to which the first signaling and/or the third signaling is applicable may be indicated implicitly or explicitly in the first signaling and/or the third signaling, or may be indicated through other signaling. Orders are given for instructions, and there are no specific limitations here.

Optionally, a parallel solution to the above solution of adjusting the transmit power value through third signaling may be: when the number of random access failures of the terminal device is greater than or equal to N, the transmit power value is increased and random access is initiated again. Among them, N is an integer greater than 0.

In a specific solution, if the number of random access failures of the terminal device is less than M, the terminal device can increase the first value based on the original transmission power value and initiate random access again. If the number of random access failures of the terminal device is greater than or equal to M, the terminal device can increase the second value based on the original transmission power value and initiate random access again, where M is an integer greater than N, and the second value can be greater than first value.

In the embodiment of the present application, by indicating a specific transmit power value, compared with indicating the target received power, the power control process can be simplified, so that the base station can implement power control for terminal equipment with weak measurement capabilities. Moreover, in this embodiment of the present application, the network device can indicate corresponding transmission power values according to different coverage levels, thereby achieving more precise power control.

The above introduces a method for network equipment to control the power of terminal equipment. This method sends power values through selection signaling, paging signaling, query signaling and other instructions before random access, so that the terminal equipment can follow the instructions. The sending power value initiates random access and realizes the power control of the network device on the terminal device. Another method is introduced below. This method adjusts the transmit power value of the terminal device during the random access process. On the one hand, it can realize the power control of the terminal device by the network device. On the other hand, it can also reduce the random access delay of the terminal device. .

Refer to Figure 10, which is a schematic flow chart of another communication method provided by this application. The method includes:

S1001. The terminal device sends the first signaling to the network device with the first power. Correspondingly, the network device receives the first signaling from the terminal device.

The first signaling is a random access request or message A in the random access process or message 3 in the random access process. For example, the second signaling may include a random number and a preamble, where the random number may be RN16, etc.; or the second signaling may be a random access preamble.

In one possible implementation, before S1001, the network device can trigger the terminal device to perform random access. For the specific process, please refer to the relevant descriptions in A1 to A3 in 5) of the above terminology introduction.

S1002. The network device sends second signaling to the terminal device. Correspondingly, the terminal device receives the second signaling from the network device.

The second signaling is used to adjust the transmit power of the terminal device.

Optionally, the second signaling may also be used to indicate re-random access. In a possible implementation, the second signaling may also indicate access resources in the time domain and/or frequency domain of the terminal device. Therefore, the terminal device can resend the first signaling on the access resource indicated by the second signaling, that is, re-initiate random access (or initiate random access again).

Optionally, the second signaling may also include time domain resource information or frequency domain resource information, used to instruct the terminal device that sends the first signaling in the time domain resource or frequency domain resource to adjust the transmit power and/or re- Send the first signaling. For example, the time domain resource information may be a time domain resource index such as an access opportunity or a time slot index, and the frequency domain resource information may be a carrier index, etc.

Optionally, the value of the random number included in the first signaling sent again by the terminal device and the value of the random number included in the first signaling sent in S1001 may be the same or different.

In a possible implementation, before S1002, the network device may determine that the first signaling has not been successfully received. For example, network The device only detects the preamble in the first signaling. Specifically, it may only detect the preamble sent together with the random number; or the network device detects that the sending power of the first signaling is low, for example, the network device It is detected that the power of the preamble is less than the threshold value, where the preamble may be a preamble sent together with a random number, or may be a random access preamble.

S1003: The terminal device resends the first signaling to the network device with the second power.

Wherein, the second power is higher than the first power.

For example, the second power may be included in the second signaling. For example, the second power may be included in the second signaling. Alternatively, the second power may be determined by the terminal device based on the second signaling. For example, the second signaling includes the difference between the second power and the first power, and the terminal device may determine based on the first power and the difference. The second power; for another example, the second signaling only instructs to increase the transmit power, and the terminal device determines that the increased transmit power is the second power. In this method, the amplitude of the increase by the terminal device can be determined by the terminal device, or It can be specified in the agreement or pre-configured. There is no specific limit here.

The above method can realize power control of the terminal device by the network device by instructing the terminal device to adjust the transmission power during the random access process. In addition, when the network device determines that the terminal device's transmission power is low and cannot successfully decode, it can instruct the terminal device to reconnect, so that the terminal device does not have to wait for other terminal devices to complete the access before trying to access, thereby reducing the terminal device's random access delay.

The above two methods solve the power control problem of terminal equipment with weak measurement capabilities during the random access process. Another communication method is provided below, which can solve the problem of interference from multiple tags in the scenario of uplink frequency division data transmission. Refer to Figure 11, which is a schematic flow chart of a communication method provided by this application. The method includes:

S1101. The network device sends the first signaling to the terminal device. Correspondingly, the terminal device receives the first signaling from the network device.

The first signaling indicates reporting of PHR. In an exemplary explanation, "PHR" may also be replaced by terms such as power headroom, power headroom information, and power headroom indication.

For example, the first signaling may be a selection instruction, or the first signaling may be a paging instruction, or the first signaling may be a query signaling.

In a possible implementation, the first signaling may instruct one or more terminal devices to report the PHR, and the one or more terminal devices include terminal devices.

S1102: The terminal device sends the PHR to the network device. Correspondingly, the network device receives the PHR from the terminal device.

In a possible implementation, the terminal device can send the PHR and the random number to the network device. For example, the terminal device can send a random access request to the network device, and the random access request carries the random number and the PHR. Optionally, the random access request may also include a preamble.

In another possible implementation, the terminal device can also send the PHR together with the uplink data after receiving the response message of the random access preamble. For example, the terminal device sends the random access preamble to the network device, and after receiving the random access preamble from The network device sends uplink data to the network device after the random access preamble response message, and the uplink data carries the PHR. Optionally, the uplink data may also include a preamble and/or a random number.

Further, after receiving the uplink data, the network device can reply with a response message or a conflict resolution message, etc.

Optionally, after receiving the PHR of the terminal device, the network device can adjust the transmit power of the terminal device according to the PHR. For example, the network device can instruct the terminal device to increase the transmit power by a numerical value.

As a possible implementation manner, the network device may not send the first signaling to the terminal device, and the terminal device may carry the PHR in the specific signaling by default. For example, the terminal device may carry the PHR in the first uplink data by default. For another example, the terminal device may carry the PHR in the random access request or message A or message 3 in the random access process by default, and so on.

It should be noted that the methods described in Figure 7, Figure 10 and Figure 11 can be implemented independently as one solution, any two methods can be combined as one solution, or three methods can be combined as one solution. There are no specific limitations in this application.

Based on the same concept as the method embodiment, the embodiment of the present application provides a communication device. The structure of the communication device can be shown in Figure 12 and includes a communication module 1201 and a processing module 1202.

In one embodiment, the communication device may be used to implement the method executed by the terminal device in the embodiment of FIG. 7 . The device may be the terminal device itself, or may be a chip or chipset in the terminal device or a chip for Execute part of the related method functionality. Among them, the communication module 1201 is used to communicate with network equipment; the processing module 1202 is used to receive data from the network device through the communication module 1201. The first signaling of the network device, the first signaling includes the first transmission power value of the terminal device, the first signaling is a selection instruction, or the first signaling is a paging instruction, or , the first signaling is query signaling; and, the communication module 1201 sends the second signaling to the network device with the first transmission power value.

Optionally, the processing module 1202 is also configured to: receive a third signaling from the network device through the communication module 1201, the third signaling instructs the terminal device to adjust the transmission power to the third transmission. Power value; send fourth signaling to the network device with the third transmission power value through the communication module 1201.

Optionally, the processing module 1202 is also configured to: receive a fifth signaling from the network device through the communication module 1201, the fifth signaling instructs the terminal device to report a PHR; through the communication Module 1201 reports PHR to the network device.

In one embodiment, the communication device can be used to implement the method performed by the network device in the embodiment of Figure 7. The device can be the network device itself, or it can be a chip or chipset in the network device or a chip used in the chip. Execute part of the related method functionality. Among them, the communication module 1201 is used to communicate with the terminal device; the processing module 1202 is used to send the first signaling through the communication module 1201, the first signaling includes the first transmission power value of the terminal device, The first signaling is a selection instruction, or the first signaling is a paging instruction, or the first signaling is a query signaling; the communication module 1201 receives the third signal from the terminal device. Second signaling.

The processing module 1202, when sending the first signaling through the communication module 1201, may be specifically configured to: send the first signaling through the communication module 1201 with a first number of repetitions, wherein the third A transmit power value corresponds to the first number of repetitions.

Optionally, the processing module 1202 is also configured to: detect only the preamble in the second signaling, or detect that the power of the preamble is less than a threshold value; through the communication module 1201 Send third signaling to the terminal device, where the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value.

Optionally, the processing module 1202 is also configured to: send a fifth signaling to the terminal device through the communication module 1201, the fifth signaling instructs the terminal device to report PHR; through the communication module 1201 Receive PHR from the terminal device.

In one implementation, the communication device can be used to implement the method executed by the terminal device in the embodiment of Figure 10. The device can be the terminal device itself, or it can be a chip or chipset in the terminal device or a chip for Execute part of the related method functionality. Among them, the communication module 1201 is used to communicate with the network device; the processing module 1202 is used to send the first signaling to the network device with the first power through the communication module 1201, and the first signaling is a random connection. Input request; receive the second signaling from the network device through the communication module 1201, the second signaling is used to adjust the transmission power of the terminal device; transmit the signal to the terminal device with the second power through the communication module 1201 The network device resends the first signaling, and the second power is higher than the first power.

Optionally, the processing module 1202 is also configured to: receive third signaling from the network device through the communication module 1201, where the third signaling instructs the terminal device to report PHR; through the communication Module 1201 reports the PHR to the network device.

In one implementation, the communication device can be used to implement the method performed by the network device in the embodiment of Figure 10. The device can be the network device itself, or it can be a chip or chipset in the network device or a chip used in the chip. Execute part of the related method functionality. Among them, the communication module 1201 is used to communicate with the terminal device; the processing module 1202 is used to receive the first signaling from the terminal device through the communication module 1201, and the first signaling is a random access request; Second signaling is sent to the terminal device through the communication module 1201, and the second signaling instructs the terminal device to send the first signaling with a second power.

Optionally, the processing module 1202 is also configured to: before sending the second signaling through the communication module 1201, only detect the preamble in the first signaling; or, detect the first The power of the preamble in signaling is less than the threshold value.

Optionally, the processing module 1202 is also configured to: send third signaling to the terminal device through the communication module 1201, where the third signaling instructs the terminal device to report PHR; through the communication module 1201 Receive PHR from the terminal device.

In one implementation, the communication device may be used to implement the method executed by the terminal device in the embodiment of FIG. 11. The device may be the terminal device itself, or may be a chip or chipset in the terminal device or a chip for Execute part of the related method functionality. Among them, the communication module 1201 is used to communicate with the network device; the processing module 1202 is used to receive the first signaling from the network device through the communication module 1201, and the first signaling indicates reporting a power headroom report. PHR; send the PHR to the network device through the communication module 1201.

The processing module 1202, when sending the PHR to the network device through the communication module 1201, may be specifically configured to: send a random access request to the network device through the communication module 1201. Incoming requests carry a random number as well as the PHR.

The processing module 1202, when sending the PHR to the network device through the communication module 1201, may also be specifically configured to: send a random access preamble to the network device through the communication module 1201; The communication module 1201 receives the The response message of the random access preamble of the network device; sends uplink data to the network device through the communication module 1201, and the uplink data carries the PHR.

In one implementation, the communication device can be used to implement the method performed by the network device in the embodiment of Figure 11. The device can be the network device itself, or it can be a chip or chipset in the network device or a chip for Execute part of the related method functionality. Among them, the communication module 1201 is used to communicate with the terminal device; the processing module 1202 is used to send the first signaling through the communication module 1201, the first signaling instructs the terminal device to report the power headroom report PHR; And, receiving the PHR from the terminal device through the communication module 1201.

The processing module 1202, when receiving the PHR reported by the terminal device through the communication module 1201, may be specifically configured to: receive a random access request from the terminal device through the communication module 1201. Incoming requests carry a random number as well as the PHR.

The processing module 1202, when receiving the PHR reported by the terminal device through the communication module 1201, may also be specifically configured to: receive the random access preamble from the terminal device through the communication module 1201; The communication module 1201 sends a response message of the random access preamble to the terminal device; and receives uplink data from the terminal device through the communication module 1201, where the uplink data carries the PHR.

The division of modules in the embodiments of the present application is schematic and is only a logical function division. In actual implementation, there may be other division methods. In addition, each functional module in each embodiment of the present application may be integrated into one processing unit. In the device, it can exist physically alone, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software function modules. It can be understood that, for the functions or implementation of each module in the embodiments of this application, further reference can be made to the relevant descriptions of the method embodiments.

In one possible way, the communication device can be as shown in Figure 13. The device can be a communication device or a chip in the communication device. The communication device can be a terminal device with weak measurement such as a tag, or a network device, etc. A device with read and write capabilities. The device includes a processor 1301 and a communication interface 1302, and may also include a memory 1303. Among them, the processing module 1202 may be the processor 1301. The communication module 1201 may be a communication interface 1302.

The processor 1301 may be a CPU, a digital processing unit, or the like. The communication interface 1302 may be a transceiver, an interface circuit such as a transceiver circuit, or a transceiver chip, or the like. The device also includes: a memory 1303 for storing programs executed by the processor 1301. The memory 1303 can be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory (volatile memory), such as a random access memory (random access memory). -access memory, RAM). Memory 1303 is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The processor 1301 is used to execute the program code stored in the memory 1303, and is specifically used to execute the actions of the above-mentioned processing module 1202, which will not be described again in this application. The communication interface 1302 is specifically used to perform the above-mentioned actions of the communication module 1201, which will not be described again in this application.

The embodiment of the present application does not limit the specific connection medium between the communication interface 1302, the processor 1301 and the memory 1303. In the embodiment of the present application, the memory 1303, the processor 1301 and the communication interface 1302 are connected through a bus 1304 in Figure 13. The bus is represented by a thick line in Figure 13. The connection methods between other components are only schematically explained. , is not limited. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 13, but it does not mean that there is only one bus or one type of bus.

Embodiments of the present application also provide a computer-readable storage medium for storing computer software instructions required to execute the above-mentioned processor, which includes programs required to execute the above-mentioned processor.

Embodiments of the present application also provide a communication system, including a communication device for realizing the functions of the terminal equipment in the embodiment of FIG. 7 and a communication device for realizing the functions of the network equipment in the embodiment of FIG. 7 .

Embodiments of the present application also provide a communication system, including a communication device for realizing the functions of the terminal equipment in the embodiment of FIG. 10 and a communication device for realizing the functions of the network equipment in the embodiment of FIG. 10 .

Embodiments of the present application also provide a communication system, including a communication device for realizing the functions of the terminal equipment in the embodiment of FIG. 11 and a communication device for realizing the functions of the network equipment in the embodiment of FIG. 11 .

Those skilled in the art will understand that embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing device produce a use A device for implementing the functions specified in one process or processes of the flowchart and/or one block or blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions The device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.

These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device. Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

Claims

A communication method, characterized in that the method is applied to a terminal device, and the method includes:

Receive the first signaling from the network device, the first signaling includes the first transmission power value of the terminal device, the first signaling is a selection instruction, or the first signaling is a paging instruction , or the first signaling is query signaling;

Send second signaling to the network device using the first transmission power value.
The method of claim 1, wherein the first signaling includes the first transmit power value of the terminal device, including:

The first signaling includes the first transmission power value corresponding to the first coverage level and the second transmission power value corresponding to the second coverage level.
The method of claim 1, wherein the first signaling is sent with a first number of repetitions, and the first transmission power value corresponds to the first number of repetitions.
The method according to any one of claims 1-3, characterized in that the method further includes:

Receive third signaling from the network device, the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value;

Send fourth signaling to the network device using the third transmit power value.
The method of claim 4, wherein the third signaling includes the third transmit power value, or the third signaling includes the third transmit power value and the first transmit power value. The difference between power values.
The method of claim 4 or 5, wherein the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value, including:

The third signaling indicates that the transmit power corresponding to the first coverage level is adjusted to the third transmit power value.
The method according to any one of claims 1 to 6, characterized in that the method further includes:

Receive fifth signaling from the network device, the fifth signaling instructs the terminal device to report a power headroom report (PHR);

Report the PHR to the network device.
The method according to any one of claims 1 to 7, characterized in that the second signaling is a random access request or message A in a random access process or message 3 in a random access process.
A communication method, characterized in that the method is applied to network equipment, and the method includes:

Send the first signaling, the first signaling including the first transmission power value of the terminal device, the first signaling being a selection instruction, or the first signaling being a paging instruction, or the third One signaling is query signaling;

Receive second signaling from the terminal device.
The method of claim 9, wherein the first signaling includes the first transmit power value of the terminal device, including:

The first signaling includes the first transmission power value corresponding to the first coverage level and the second transmission power value corresponding to the second coverage level.
The method of claim 9, wherein sending the first signaling includes:

The first signaling is sent with a first number of repetitions, wherein the first transmission power value corresponds to the first number of repetitions.
The method according to any one of claims 9-11, characterized in that the method further includes:

Only the preamble in the second signaling is detected, or the power of the preamble is detected to be less than a threshold value;

Send third signaling to the terminal device, where the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value.
The method of claim 12, wherein the third signaling includes the third transmit power value, or the third signaling includes the third transmit power value and the first transmit power value. The difference between power values.
The method of claim 12 or 13, wherein the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value, including:

The third signaling also indicates that the transmit power corresponding to the first coverage level is adjusted to the third transmit power value.
The method according to any one of claims 9-14, characterized in that the method further includes:

Send fifth signaling to the terminal device, where the fifth signaling instructs the terminal device to report a power headroom report (PHR);

Receive PHR from the terminal device.
A communication device, characterized in that the device is applied to terminal equipment, and the device includes:

Communication module, used to communicate with network equipment;

a processing module configured to receive first signaling from the network device through the communication module, where the first signaling includes the first transmission power value of the terminal device, and the first signaling is a selection instruction, Alternatively, the first signaling is a paging instruction, or the first signaling is query signaling;

and sending second signaling to the network device using the first transmission power value through the communication module.
The apparatus according to claim 16, wherein the first signaling includes a first transmit power value of the terminal equipment, including:

The first signaling includes the first transmission power value corresponding to the first coverage level and the second transmission power value corresponding to the second coverage level.
The device of claim 16, wherein the first signaling is sent with a first number of repetitions, and the first transmission power value corresponds to the first number of repetitions.
The device according to any one of claims 16 to 18, characterized in that the processing module is also used to:

Receive third signaling from the network device through the communication module, the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value;

Send fourth signaling to the network device with the third transmission power value through the communication module.
The apparatus of claim 19, wherein the third signaling includes the third transmit power value, or the third signaling includes the third transmit power value and the first transmit power value. The difference between power values.
The apparatus according to claim 19 or 20, wherein the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value, including:

The third signaling indicates that the transmit power corresponding to the first coverage level is adjusted to the third transmit power value.
The device according to any one of claims 16-21, characterized in that the processing module is also used to:

Receive fifth signaling from the network device through the communication module, the fifth signaling instructs the terminal device to report a power headroom report PHR;

Report PHR to the network device through the communication module.
The device according to any one of claims 16 to 22, characterized in that the second signaling is a random access request or message A in a random access process or message 3 in a random access process.
A communication device, characterized in that the device is applied to network equipment, and the device includes:

Communication module, used to communicate with terminal equipment;

A processing module configured to send first signaling through the communication module, where the first signaling includes a first transmission power value of the terminal device, where the first signaling is a selection instruction, or where the first signaling is a selection instruction. The signaling is a paging instruction, or the first signaling is query signaling;

Receive second signaling from the terminal device through the communication module.
The apparatus according to claim 24, wherein the first signaling includes a first transmit power value of the terminal equipment, including:

The first signaling includes the first transmission power value corresponding to the first coverage level and the second transmission power value corresponding to the second coverage level.
The device of claim 24, wherein the processing module, when sending the first signaling through the communication module, is specifically used to:

The first signaling is sent through the communication module with a first number of repetitions, wherein the first transmission power value corresponds to the first number of repetitions.
The device according to any one of claims 24 to 26, characterized in that the processing module is also used to:

Only the preamble in the second signaling is detected, or the power of the preamble is detected to be less than a threshold value;

Third signaling is sent to the terminal device through the communication module, and the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value.
The apparatus of claim 27, wherein the third signaling includes the third transmit power value, or the third signaling includes the third transmit power value and the first transmit power value. The difference between power values.
The apparatus of claim 27 or 28, wherein the third signaling instructs the terminal device to adjust the transmit power to a third transmit power value, including:

The third signaling also indicates that the transmit power corresponding to the first coverage level is adjusted to the third transmit power value.
The device according to any one of claims 24 to 29, characterized in that the processing module is also used to:

Send fifth signaling to the terminal device through the communication module, the fifth signaling instructs the terminal device to report a power headroom report PHR;

The PHR from the terminal device is received through the communication module.
A communication system, characterized in that it includes a terminal device and a network device. The terminal device is used to perform the method according to any one of claims 1 to 8, and the network device is used to perform the method according to any one of claims 9 to 15. any of the methods described.
A communication device, characterized by comprising a processor coupled to a memory for executing computer programs or instructions stored in the memory, so that the communication device executes claims 1-8 and 9 Methods described in any one of -15.
A computer program product, characterized in that the computer program product includes instructions for executing the method according to any one of claims 1-8 and 9-15.
A computer-readable storage medium, characterized in that computer-readable instructions are stored in the computer-readable storage medium. When the computer-readable instructions are run on a communication device, the computer-readable instructions of any one of claims 1 to 8 are achieved. The method described in claim 9 is executed, or the method described in any one of claims 9 to 15 is executed.