CN117062204A

CN117062204A - Wireless signal transmission power adjustment method and device

Info

Publication number: CN117062204A
Application number: CN202311014866.3A
Authority: CN
Inventors: 闫志宇; 王志勤; 江甲沫; 杜滢; 沈霞; 刘晓峰; 焦慧颖
Original assignee: China Academy of Information and Communications Technology CAICT
Current assignee: China Academy of Information and Communications Technology CAICT
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2023-11-14

Abstract

The application discloses a wireless signal transmission power adjusting method, which comprises the following steps: transmitting a power indication value in a basic channel, wherein the basic channel is any one of the following: an access preamble of a type 1 random access procedure, an Msg3 of a type 1 random access procedure, and an Msg A of a type 2 random access procedure; and acquiring a power adjustment value of a target PUCCH, wherein the target PUCCH belongs to a public PUCCH resource and is used for bearing HARQ-ACK information of a type 1 random access process Msg4 or a type 2 random access process Msg B. The application also comprises a device for implementing the method. The method solves the problem that the coverage performance of the PUCCH cannot be adjusted according to the working state of the terminal equipment in the random access process, is particularly suitable for a non-ground communication network, and enhances the coverage performance of the PUCCH carrying the Msg4/MsgB HARQ-ACK.

Description

Wireless signal transmission power adjustment method and device

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method and apparatus for adjusting wireless signal transmission power.

Background

In order to meet the requirements of integration of mobile communication with the earth, a Non-terrestrial communication network (Non-terrestrial Network, NTN) needs to be supported, and various communication modes such as GEO geostationary satellites, MEO in-orbit satellites, LEO low-orbit satellites and the like are included. In NTN, satellite-to-ground time delay is long, for example, GEO single-channel transmission time delay at 35786km may reach 272.4ms, non-GEO single-channel transmission time delay is at least 14.2ms (600 km LEO), and MEO single-channel transmission time delay at 10000km may reach 95.2ms. The ultra-large propagation delay brings about great attenuation of wireless signal transmission, and affects the coverage area of the network.

Through evaluation and analysis, transmission of partial physical channels in the NTN communication mode cannot meet coverage requirements, and becomes a bottleneck factor affecting the coverage performance of the NTN. For example, in the parameter set 1 scenario of-5 dBi UE antenna gain, LOS path transmission, LEO-1200, the coverage performance of PUCCH carrying Msg4 HARQ-ACK cannot meet its coverage requirement.

Disclosure of Invention

The application provides a wireless signal transmission power adjustment method and equipment, which solve the problem that the coverage performance of a PUCCH cannot be adjusted according to the working state of terminal equipment in the random access process, are particularly suitable for non-ground communication networks, and enhance the coverage performance of the PUCCH carrying Msg4/MsgB HARQ-ACK.

The method according to any one embodiment of the first aspect of the present application, for a terminal side device, includes the following steps:

transmitting a power indication value in a basic channel, wherein the basic channel is any one of the following: an access preamble of a type 1 random access procedure, an Msg3 of a type 1 random access procedure, and an Msg A of a type 2 random access procedure;

and acquiring a power adjustment value of a target PUCCH, wherein the target PUCCH belongs to a public PUCCH resource and is used for bearing HARQ-ACK information of a type 1 random access process Msg4 or a type 2 random access process Msg B.

Further, the power indication value is sent in response to the received power of the downlink reference signal being greater than or less than a first threshold value; the power indication value is used to indicate a requested power adjustment value for decreasing or increasing the power value of the target PUCCH.

The method according to any one embodiment of the first aspect of the present application, for a network side device, includes the following steps:

receiving a power indication value in a basic channel, wherein the basic channel is any one of the following: an access preamble of a type 1 random access procedure, an Msg3 of a type 1 random access procedure, and an Msg A of a type 2 random access procedure;

and sending a power adjustment value of a target PUCCH, wherein the target PUCCH belongs to a public PUCCH resource.

In the method according to any one of the embodiments of the first aspect of the present application, preferably, the power indication value is used to indicate at least one of the following: maximum transmission power configured at the terminal side, a power margin value of the terminal side equipment, and a requested power adjustment value.

In the method according to any one of the embodiments of the first aspect of the present application, preferably, the transmission time of the target PUCCH is between a first time point and a second time point; the terminal side equipment receives the Msg4 of the type 1 random access process or the Msg B of the type 2 random access process for the first time at the first time point; and the terminal side equipment determines the private PUCCH configuration at the second time point. The time of transmitting the HARQ-ACK information with the private PUCCH configuration resource is after the second point in time.

In the method according to any one of the embodiments of the first aspect of the present application, preferably, the power adjustment value of the target PUCCH is carried by scheduling information of HARQ-ACK corresponding data included in the target PUCCH and/or by group control information for adjusting PUCCH transmission power.

In the method according to any one of the embodiments of the first aspect of the present application, preferably, the target PUCCH power adjustment value belongs to a first set, and the power adjustment value of the private PUCCH belongs to a second set, where at least one value in the first set is greater than a maximum value in the second set.

In the method according to any one of the embodiments of the first aspect of the present application, preferably, the power indication value further includes a repeat transmission request state of the target PUCCH, for indicating a number of repetitions of the target PUCCH.

In a second aspect, the present application further proposes a terminal-side device, configured to implement the method according to any one of the first aspect of the present application, where at least one module in the terminal-side device is configured to at least one of the following functions: at least one module in the terminal side device is used for at least one of the following functions: determining a power indication value, transmitting the power indication value in Msg1, msg3 or MsgA of the random access procedure; the power adjustment value of the target PUCCH is obtained and determined from Msg2, msg4 or Msg B of the random access process; and determining configuration of the private PUCCH resources.

In a third aspect, the present application further proposes a network side device, configured to implement the method according to any one of the first aspect of the present application, where at least one module in the network side device is configured to at least one of the following functions: obtaining a power indication value in Msg1, msg3 or MsgA of the random access procedure; determining a power adjustment value of a target PUCCH, and transmitting the power adjustment value of the target PUCCH in Msg2, msg4 or Msg B of a random access procedure; determining a configuration of the private PUCCH resource, transmitting the private PUCCH resource in Msg2, msg4 or MsgB of the random access procedure.

In a fourth aspect, the present application also proposes a communication device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of the embodiments of the first aspect of the application.

In a fifth aspect, the present application also proposes a computer-readable medium, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the first aspect of the application.

In a sixth aspect, the present application further provides a mobile communication system, which includes at least one network side device according to any one embodiment of the present application and/or at least one terminal side device according to any one embodiment of the present application.

The above at least one technical scheme adopted by the embodiment of the application can achieve the following beneficial effects:

through the maximum transmitting power, or the power adjustment capability, or the power residual value, or the power adjustment request of the transmission opportunity i on the carrier wave f cell c configured by the UE carried by the Msg1/Msg3/Msg A in the random access process, the gNB can determine the power indication value aiming at the target PUCCH according to the indication, thereby effectively solving the problem of enhancing the coverage performance of the PUCCH carrying the Msg4/Msg B HARQ-ACK in the NTN network, optimizing the public PUCCH resource use efficiency of the system and meeting the network access capacity and the UE access delay requirement.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

fig. 1 is a schematic diagram of a conventional random access procedure;

fig. 2 is a flowchart of an embodiment of the method of the present application for a terminal side device;

FIG. 3 is a flowchart of an embodiment of the method of the present application for a network side device;

fig. 4 is a schematic diagram of interaction information between a network side and a terminal side;

FIG. 5 is a schematic diagram of an embodiment of a network side device;

FIG. 6 is a schematic diagram of an embodiment of a terminal-side device;

fig. 7 is a schematic structural diagram of a network side device according to another embodiment of the present application;

fig. 8 is a block diagram of a terminal-side device according to another embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a conventional random access procedure.

The four steps of the conventional random access, i.e. type 1 random access procedure, are based on four message (Msg) interactions between the UE and the gNB: msg1: one or more preambles transmitted by the UE according to the random access configuration and the downlink measurement. Msg2: one or more responses to the Msg1 preamble of the gNB transmission provide further information and scheduling of Msg3. Msg 3L 2/L3 message. Msg4: a contention resolution scheme.

The simplified random access, i.e. type 2 random access procedure, has two steps, the first step comprising uplink Msg a transmission, including equivalent content of Msg1 and Msg3 for 4 step random access. The second step of the 2-step random access is a downlink Msg B transmission comprising the equivalent content of Msg2 and Msg4 of the 4-step random access. (in fact, the uplink Msg1 and Msg3 are packed, and the downlink Msg2 and Msg4 are packed and sent).

If the Msg4/Msg B does not carry the UE specific PUCCH configuration information, the UE does not have a dedicated PUCCH when feeding back the HARQ-ACK aiming at the Msg4/Msg B, and uses resources in a public PUCCH resource set configured in a broadcast message. The common PUCCH resource set contains 16 resources. The coverage performance of the PUCCH can be improved by repeatedly transmitting the PUCCH carrying the Msg4/MsgB HARQ-ACK. However, PUCCH repeated transmission carrying Msg4/MsgB HARQ-ACK implies on the one hand an increased access delay for the UE. On the other hand, common PUCCH resources are shared between UEs. Repeated occupation of resources of the common PUCCH resource set may also cause other UEs to have insufficient PUCCH resources in the initial access stage, thereby limiting access speeds of other UEs.

The application solves the problem of how to enhance the coverage performance of the PUCCH carrying the Msg4/MsgB HARQ-ACK in the NTN network.

Application scene: for data information between a network (gNB) side device and a terminal (UE) side device.

The inventive concept of the present application is that the coverage performance of PUCCH carrying Msg4/MsgB HARQ-ACK is related not only to the number of repeated transmissions but also to its transmit power. Therefore, the scheme disclosed by the application improves the coverage performance of the Msg4 HARQ-ACK by controlling the transmission power of the PUCCH, and can further meet the requirement of the channel coverage performance by combining the repeated transmission of the Msg4/Msg B HARQ-ACK.

In the application, a PUCCH carrying an Msg4/MsgB HARQ-ACK is defined as a target PUCCH, wherein the Msg4/MsgB refers to information sent to the UE before the UE acquires a private PUCCH resource exclusive to the UE.

It should be noted that, the steps of the embodiments of the present application are used for a network entity of a wireless communication system, and include a terminal side device, a network side device or other intermediate devices; the steps of the embodiment of the application can also be used for providing the service device for information processing for the network entity equipment; the steps of the embodiments of the present application may also be used in any apparatus, system, subsystem, circuit, chip, or software entity that provides information receiving, transmitting, identifying, and processing for a terminal side device or a network side device.

Fig. 2 is a flowchart of an embodiment of the method of the present application for a terminal-side device.

The method according to any one embodiment of the first aspect of the present application, for a terminal device, includes the following steps 210 to 240: and the terminal side equipment sends the transmission power indicated value and acquires the power adjustment value and/or the repetition number of the target PUCCH.

Step 210, transmitting a power indication value on a basic channel, where the basic channel is any one of the following: an access preamble of a type 1 random access procedure, an Msg3 of a type 1 random access procedure, and an MsgA of a type 2 random access procedure.

For example, the base channel shown in fig. 4 is Msg1 or Msg3. If the basic channel is Msg1 of the type 1 random access procedure, the base station and the UE group the random access preambles in advance, and the UE uses the access preambles in different groups to represent different power indication values, that is, different states of the power indication values are carried by the group in which the access preamble is located. The gNB can determine the transmitting power capability of the UE and/or the request of the UE for adjusting the transmitting power by detecting the random access preamble, and further can adjust the power of the terminal side equipment for transmitting the Msg3 information and/or adjust the power of the target PUCCH according to the power indicated value in the random access response. Further, the gNB can determine parameters such as the repeated sending times of the target PUCCH according to the power indicated value, and the coverage requirement of the target PUCCH channel is met. If the basic channel is Msg3 of the type 1 random access procedure, the gNB may adjust the power of the terminal side device for transmitting the target PUCCH by acquiring the power indication value. Alternatively, the logical channel identifier in Msg3 may be used as a preset value to identify the logical channel corresponding power indication value of the current transmission.

Preferably, the power indication value is used for indicating at least one of the following: maximum transmission power configured by the terminal, a power margin value of the terminal device, and a requested power adjustment value (power adjustment request).

The transmit power of the target PUCCH is as in equation (1), where P _CMAX,f,c (i) Is the maximum transmission power of transmission opportunity i on carrier f cell c configured by the terminal side equipment.

On one hand, the transmission power of the target PUCCH needs to meet the performance requirement of the target PUCCH, and on the other hand, the problem of interference between channels transmitted simultaneously by the target PUCCH and other UEs needs to be considered. P (P) _CMAX,f,c (i) Some of the values of (a) are configured by the UE itself, if the gNB does not acquire P _CMAX,f,c (i) It is not known how to control the transmit power of the UE. According to the prior art, the UE reports P of its own configuration to the gNB after establishing a connection with the gNB _CMAX,f,c (i) The gNB determines that the terminal side equipment sends the private according to the valueTransmit power of PUCCH and other private channels. In the application, the UE feeds back the P of the UE to the gNB in the random access stage _CMAX,f,c (i) The gNB can conveniently determine the power adjustment quantity of the target PUCCH according to the power indication value. And the UE can determine the repeated sending times of the target PUCCH according to the power indicated value, and the capacity limit requirement of the public PUCCH is met by combining the power adjustment quantity of the target PUCCH, so that the access speed requirements of the UE and other UEs are met.

Alternatively, the power indication value may also be a power headroom value for determining the UE. In the random access phase, the transmit power adjustment capability of the UE may be represented by a power headroom value. In the case that the basic channel is Msg3 of the type 1 random access procedure and Msg a of the type 2 random access procedure, before the basic channel is transmitted, the gNB has acquired the access preamble transmitted by the terminal side device, or has acquired the access preamble and Msg3/MsgB, and the capability of the UE to adjust the target PUCCH transmission power may be represented by a difference between the maximum transmission power configured by the terminal side device and any of the transmission powers of PRACH and Msg 3/MsgB. The gNB can use the power indicated value to determine the power adjustment quantity of the target PUCCH and/or the repeated sending times of the target PUCCH, and the capacity limit requirement of the public PUCCH is met by combining the power adjustment quantity of the target PUCCH, so that the access speed requirements of the UE and other UEs are met.

When the power indication value is a power adjustment request, the power adjustment request includes any of increasing, decreasing, and maintaining transmission power. Preferably, in step 210, the power indication value is sent in response to the received power of the downlink reference signal being greater than or less than a first threshold value; the power indication value is used to indicate a requested power adjustment value for decreasing or increasing the power value of the target PUCCH. For example, optionally, the UE may acquire a first threshold, and determine whether to send a power indication value to the network side device according to whether the received power of the measured downlink reference signal is below the first threshold. Or the UE may determine whether to transmit the power indication value to the network side device according to other reference amounts. For example, when the received power of the downlink reference signal measured by the UE is below the first threshold, the power of the self-transmitting target PUCCH may be requested to be raised from the gNB through the power indication value. When the received power of the downlink reference signal measured by the UE is above the first threshold, the power of the target PUCCH sent by the UE may be requested to be reduced from the gNB through the power indication value. The power adjustment request includes any of increasing, decreasing, and maintaining the transmission power. The UE may further send an amount of power adjustment request to the network-side device. The first threshold may be that the gNB transmits through broadcast information, and is used for the UE to determine whether to transmit the power indication information according to the comparison between the measurement result and the first threshold.

Further preferably, the power indication value further includes a repeated transmission request state of the target PUCCH for indicating the number of repetitions of the target PUCCH. The power indication value of the basic channel transmission may be indicated in association with the repeated transmission request information of the target PUCCH. For example, the power indication value is a state 1 of the first value corresponding to the power indication value, and a state 1 of the repeated transmission request; the power indication value is state 2 of the second value corresponding to the power indication value, and state 2 of the repeated transmission request, … …. The number of repetition of the target PUCCH includes 1, i.e., no repetition of transmission.

Step 220, receive random access procedure Msg2, msg4 or MsgB.

Step 230, obtaining a power adjustment value of a target PUCCH, where the target PUCCH belongs to a common PUCCH resource and is used for carrying a HARQ-ACK message in a type 1 random access procedure Msg4 or a type 2 random access procedure MsgB.

The target PUCCH belongs to a common PUCCH resource set and is configured by the gNB through broadcast information. PUCCH resources configured by "PUCCH-resource com mon" as described in 3GPP TS38.213.h00, 9.2.1, for example. The power adjustment value of the target PUCCH is carried by scheduling information of HARQ-ACK corresponding data included in the target PUCCH and/or by group control information for adjusting PUCCH transmission power.

Here, HARQ-ACK is a response to the corresponding data, which refers to Msg4-k or MsgB.

We call the PUCCH for feeding back the Msg4/MsgB HARQ-ACK, determined from the common PUCCH resource set, the target PUCCH. Alternatively, the PUCCH for the Msg4/MsgB HARQ-ACK before the UE is not configured with the private PUCCH resources is referred to as the target PUCCH. Msg4-K is PDSCH carrying UE private PUCCH configuration, and after the UE acquires the configuration information, HARQ-ACK for Msg4-K is fed back accordingly, k=1 to K.

Step 240, sending the target PUCCH according to the power adjustment value, where the target PUCCH includes HARQ-ACK for the random access procedure Msg4 or MsgB.

The target PUCCH is transmitted between a first time and a second time, where the first time is determined by a transmission time of HARQ-ACK corresponding to data of the first transmitted physical downlink shared channel after Msg3 or MsgA, and the second time is determined by a time of HARQ-ACK corresponding to the first information transmitted, and the first information is private PUCCH configuration information. Fig. 3 is a flowchart of an embodiment of the method of the present application for a network side device.

The method according to any one embodiment of the first aspect of the present application is used for a network side device to obtain the transmission power indication value, and determine and send the power adjustment value and/or the repetition number of the target PUCCH according to the power indication value. Specifically, the method comprises the following steps 310 to 340:

step 310, receiving information of a basic channel, where the basic channel is any one of the following: an access preamble of a type 1 random access procedure, an Msg3 of a type 1 random access procedure, and an MsgA of a type 2 random access procedure.

Optionally, the network side device sends the first threshold value, so that the UE can conveniently determine whether to send the power indication value to the network side device according to whether the received power of the downlink reference signal is below the first threshold value. The gNB cannot determine the location of the UE before the random access is successful, and the reliability of the target PUCCH and the reliability of PRACH and Msg3/MsgA previously transmitted by the UE are different. And under the condition that the power indicated value sent by the terminal side equipment is a power adjustment request, the gNB can acquire the use condition of the UE target PUCCH sending power, so that the gNB can conveniently control the power of the target PUCCH. The gNB transmits the first threshold value through broadcast information.

Step 320, the power indication value is received and determined in the base channel.

After the gcb acquires the power indication value from the base channel, the power adjustment value of the target PUCCH sent by the terminal side device may be determined accordingly according to the power indication value. If gNB has no UE power indication value, gNB can only measure the power of the UE uplink reference signal based on the UE transmission power control command, and gNB does not acquire P _CMAX,f,c (i) It is not known how to control the transmit power of the UE. For example, the gNB transmits a power adjustment value in a generic way, instructing the UE to increase the transmit power, but the transmit power of the UE has reached a maximum value and cannot use power to ensure that it is within the coverage of its gNB. In this case, if the gNB knows the power indication value, the coverage requirement can be satisfied by increasing the repetition number of the terminal side device transmitting the target PUCCH. The power indication value may be any of a maximum transmission power for determining a terminal-side device configuration, a power margin value for determining a UE, and a power adjustment request.

Step 330, determining a power adjustment value of the target PUCCH.

After acquiring the power indication value of the UE, the gNB sends a power adjustment value for the UE target PUCCH. The power adjustment value is determined in a first set. The first set is different from the second set, which is used to determine a power adjustment value for the private PUCCH.

Before the scheme of the application is disclosed, the power control adjustment state l is used on the carrier f of the uplink sub-band b to determine the target PUCCH transmitting power PP on the transmission time i _UCCH,b,f,c (i，q _u ，q _d L) is as follows:

wherein:

P ₀ is the value of the higher layer signaling configuration, or P ₀ ＝0；

P _CMAX,f,c (i) The maximum sending power of the transmission time i on the carrier wave f cell c configured by the terminal side equipment;

is the RB number of the carrier f cell c of the uplink subband b occupied by the target PUCCH on the transmission occasion i;

μ is a subcarrier configuration index;

PL is the downlink path loss measured by the UE;

is the number of symbols occupied by the target PUCCH. If the target PUCCH uses format 0, delta _UCI (u)＝0、/>If the target PUCCH uses format 1, delta _UCI (u)＝10log ₁₀ (O _UCI (u))，O _UCI (i) Is the number of UCI bits transmitted on the target PUCCH, +.>Is the number of symbols in a slot.

When l=0, the power accumulation amount g _b,f,c (i,l)＝g _b,f,c (i-i ₀ L) +ΔP, where g _b,f,c (i-i ₀ L) is the transmission occasion i-i ₀ The power accumulation amount of the upper PUCCH, ΔP is the transmission opportunity i-i of the UE ₀ And the sum of the power adjustment values obtained between transmission occasions i. g _b,f,c (0,l)＝ΔP _rampup,b,f,c +δ _b,f,c Wherein delta _b,f,c Is the power adjustment value in the random access response, the access response indication in the type 1 random access procedure, or the MsgB in the type 2 random access procedure. ΔP _rampup,b,f,c ＝min[max(0,P _CMAX,f,c -P ₀ -PL),ΔP _{rampup_requested,b,f,c} ]。ΔP _rampup,b,f,c Determined by the higher layer configuration information, is related to the amount of power accumulation rise of the terminal side device transmitting the random access preamble.

It can be seen that, before the UE acquires its own private PUCCH resource, the transmission power of the PUCCH carrying the Msg4 HARQ-ACK is mainly related to the downlink path loss, the indicated value in the random access response, the higher layer configuration information, and so on. In this process, the gNB is not able to determine how much transmit power potential the UE has itself. In this way, the indicated value in the random access response can only be estimated according to the signal power of the receiving UE in the random access process, and the coverage performance of the PUCCH of the Msg4 HARQ-ACK is affected.

The application is convenient for gNB to determine the power indication value aiming at the target PUCCH through the maximum sending power, or the power adjustment capability, or the power adjustment request of the transmission time i on the carrier wave f cell c configured by the terminal side equipment carried by the Msg1/Msg3/Msg A in the random access process.

Step 340, a power adjustment value of a target PUCCH is sent, where the target PUCCH belongs to a common PUCCH resource and is used for carrying a HARQ-ACK message in a type 1 random access procedure Msg4 or a type 2 random access procedure MsgB.

The power adjustment value of the target PUCCH is carried by scheduling information of HARQ-ACK corresponding data included in the target PUCCH and/or by group control information for adjusting PUCCH transmission power.

Fig. 4 is a schematic diagram of interaction information between a network side and a terminal side.

The first time in fig. 4 is the time when the terminal-side device acquires Msg4-1 after transmitting Msg3. Msg4-1 refers to the first PDSCH scheduled by DCI scrambled with TC-RNTI after Msg3. The subsequent PDSCH carries Msg4-2, msg4-3, … …, etc. And resources in the common PUCCH resource set for HARQ-ACK feedback corresponding to PDSCH of Msg4-1, msg4-2, … …, msg4-K and the like. Msg4-k is PDSCH carrying UE private PUCCH configuration, and after the UE acquires the configuration information, HARQ-ACK for Msg4-k is fed back accordingly. PUCCH resources configured by "PUCCH-Config" described in 3GPP TS38.213.h00, 9.2.1, for example. If the UE random access is successful, the gNB will allocate private PUCCH resources for the UE at the second time. The UE private PUCCH configuration refers to parameters such as resources, formats, etc. in the time domain-frequency domain code domain. Before the second time, the HARQ-ACK corresponding to the PDSCH sent by the network side equipment to the UE is fed back in the target PUCCH. After transmitting HARQ-ACKs for Msg4K, the HARQ-ACK feedback for other PDSCH of the UE uses a private PUCCH, where k=1 to K, K being the largest sequence number responded by the target PUCCH when Msg4 is transmitted multiple times.

The target PUCCH is transmitted between a first time and a second time, the first time being determined by a transmission time of the HARQ-ACK corresponding to the first transmission of data of the physical downlink shared channel after Msg3 or MsgA. The first time may be a transmission time of the HARQ-ACK. Alternatively, the first time may be a time offset by a preset value after the transmission time of the HARQ-ACK. And the transmission time of the wireless signal in the NTN transmission system is prolonged, and the offset preset value is used for compensating the transmission time delay of the air interface signal between the UE and the gNB. The second time is determined by the time of transmitting the HARQ-ACK corresponding to the first information, which is the private PUCCH configuration information. After the second time, the UE feedback HARQ-ACK information may use resources configured by the private PUCCH.

After transmitting the power indication value, the UE acquires a power adjustment value of the target PUCCH. The power adjustment value of the target channel may be obtained in the scheduling indication of each of Msg4-1, msg4-2, … …, msg4-K, and/or may be obtained in the group control information for adjusting the PUCCH transmission power.

Because the coverage area of the target PUCCH is limited, repeated transmission is often needed for multiple times to ensure the coverage area, the access time of the UE is prolonged, and the public PUCCH resources available to other UEs are limited. The problems of access time extension and long-term occupation of common PUCCH resources can be improved by appropriately adjusting the transmit power of the target PUCCH. Preferably, the target PUCCH power adjustment value belongs to a first set, and the power adjustment value of the private PUCCH belongs to a second set, and at least one value in the first set is greater than the maximum value in the second set.

The step size of the power adjustment value of the target PUCCH may be larger relative to the private PUCCH. A power adjustment value for the target PUCCH is determined in the first set. The power adjustment value for the private PUCCH is determined at the second set. The first set is different from the second set. For example the second set is { -1,0,1,3} [ dB ]]. The first set is {0,3,6,9} [ dB ]]. At least one value in the first set is greater than a maximum value in the second set. Different sets are used for the power adjustment values of the target PUCCH and the private PUCCH, so that different coverage requirements of the target PUCCH and the private PUCCH and different requirements on access time of the UE are conveniently embodied. When l=0, as in the formula (1), the power accumulation amount g _b,f,c (i,l)＝g _b,f,c (i-i ₀ L) +ΔP, where g _b,f,c (i-i ₀ L) is the transmission occasion i-i ₀ The power accumulation amount of the upper PUCCH, ΔP is the transmission opportunity i-i of the UE ₀ And the sum of the power adjustment values obtained between transmission occasions i. g _b,f,c (0,l)＝ΔP _rampup,b,f,c +δ _b,f,c Wherein delta _b,f,c Is the power adjustment value in the random access response. ΔP _rampup,b,f,c Determined by the higher layer configuration information. UE at transmission occasion i-i ₀ And the power adjustment value obtained between the transmission occasions i and the power adjustment value in the random access response are one of the first set for each of the target PUCCHs and one of the second set for each of the private PUCCHs. The gNB uses different sending power and/or repeated transmission strategies for the target PUCCH and the private PUCCH, so that the problem that the transmission of part of physical channels cannot meet the coverage requirement can be solved. For example, the coverage performance of the PUCCH carrying the Msg4 HARQ-ACK in the NTN scenario cannot meet the coverage requirement problem.

Fig. 5 is a schematic diagram of an embodiment of a network side device.

The embodiment of the application also provides a network side device, which is used for realizing the method of any one of the embodiments of the application, and at least one module in the network side device is used for at least one of the following functions: obtaining a power indication value in Msg1, msg3 or MsgA of the random access procedure; determining a power adjustment value of a target PUCCH, and transmitting the power adjustment value of the target PUCCH in Msg2, msg4 or Msg B of a random access procedure; determining a configuration of the private PUCCH resource, transmitting the private PUCCH resource in Msg2, msg4 or MsgB of the random access procedure.

In order to implement the above technical solution, the network side device 400 provided by the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403 that are connected to each other.

The network sending module is used for sending Msg2, msg4 or Msg B of the random access process; further, the method is also used for sending the first threshold value; the first threshold value is used for determining whether to send the power indicated value according to the measurement result.

The network determining module is configured to determine a power indication value according to the received message, and further determine a power adjustment value of the target PUCCH according to the power indication value in combination with formula (1).

The network receiving module is configured to receive Msg1, msg3 or MsgA in a random access procedure.

Specific methods for implementing the functions of the network sending module, the network determining module and the network receiving module are described in the embodiments of the methods of the present application, and are not described here again.

The network side device of the present application may refer to a base station facility, a network side device connected with a base station, or a server, or may be a system for providing services for the above devices, or may be any system, subsystem, module, circuit, chip, or software running device for providing information receiving, sending, identifying, and processing for the above devices.

Fig. 6 is a schematic diagram of an embodiment of a terminal-side apparatus.

The application also provides a terminal side device, which is used for realizing the method of any one embodiment of the application, and at least one module in the terminal side device is used for at least one of the following functions: at least one module in the terminal side device is used for at least one of the following functions: determining a power indication value, transmitting the power indication value in Msg1, msg3 or MsgA of the random access procedure; the power adjustment value of the target PUCCH is obtained and determined from Msg2, msg4 or Msg B of the random access process; and determining configuration of the private PUCCH resources.

In order to implement the above technical solution, the terminal side device 500 provided by the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503 that are connected to each other.

The terminal receiving module is used for receiving Msg2, msg4 or Msg B of the random access process and also used for receiving a first threshold value; the first threshold value is used for determining whether to send the power indicated value according to the measurement result.

The terminal determining module is used for determining a power indicated value and determining a power adjustment value of a target PUCCH according to the received message.

The terminal sending module is used for sending the Msg1, the Msg3 or the Msg A of the random access process.

Specific methods for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module are described in the embodiments of the methods of the present application, and are not described herein.

The terminal side device of the present application may refer to a User Equipment (UE), a personal mobile terminal, an intelligent terminal, a mobile phone, a computer with a communication function, a system for providing services for the above devices, or any system, subsystem, module, circuit, chip or software running device for providing information receiving, sending, identifying and processing for the above devices.

Fig. 7 is a schematic structural diagram of a network side device according to another embodiment of the present application. As shown, the network side device 600 includes a processor 601, a wireless interface 602, and a memory 603. Wherein the wireless interface may be a plurality of components, i.e. comprising a transmitter and a receiver, providing a means for communicating with various other apparatuses over a transmission medium. The wireless interface realizes the communication function with the terminal side equipment, processes wireless signals through a receiving and transmitting device, and the data carried by the signals are communicated with the memory or the processor through an internal bus structure. The memory 603 contains a computer program for executing any of the embodiments of the application, which computer program runs or changes on the processor 601. When the memory, the processor, and the wireless interface circuit are connected through a bus system, the bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described herein again.

Fig. 8 is a block diagram of a terminal-side device according to another embodiment of the present application. The terminal-side device 700 comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in the terminal-side device 700 are coupled together by a bus system. Bus systems are used to enable connected communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

The user interface 703 may include a display, keyboard, or pointing device, such as a mouse, trackball, touch pad, or touch screen, among others.

The memory 702 stores executable modules or data structures. The memory may store an operating system and application programs. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, etc. for implementing various application services.

In an embodiment of the application, the memory 702 contains a computer program that executes any of the embodiments of the application, the computer program running or changing on the processor 701.

The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and performs the steps of the above method in combination with its hardware. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 701, implements the steps of the method embodiments as described in any of the embodiments above.

The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method of the present application may be performed by integrated logic circuitry in hardware or by instructions in software in processor 701. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In one typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and memory.

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, and the like) having computer-usable program code embodied therein.

The application thus also proposes a computer-readable medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any of the embodiments of the application. For example, the memory 603, 702 of the present application may include non-volatile memory in a computer-readable medium, random Access Memory (RAM) and/or non-volatile memory, etc., such as read-only memory (ROM) or flash RAM.

Based on the embodiment of the device of the present application, the present application also proposes a mobile communication system, which includes at least 1 embodiment of any one terminal side device of the present application and/or at least 1 embodiment of any one network side device of the present application.

It should be noted that the specific mobile communication technology described in the present application is not limited, and may be WCDMA, CDMA2000, TD-SCDMA, wiMAX, LTE/LTE-A, LAA, muLTEfire, and fifth generation, sixth generation, and nth generation mobile communication technologies that may occur subsequently.

The terminal described in the present application refers to a terminal side product capable of supporting a communication protocol of a land mobile communication system, and a Modem module (Wireless Modem) for special communication, which can be integrated by various types of terminal forms such as a mobile phone, a tablet computer, a data card, etc. to complete a communication function.

For convenience of description, a fourth generation mobile communication system LTE/LTE-a and its derivative multewire are taken as an example, wherein a mobile communication terminal may be denoted as UE (User Equipment), and an access device at a network side may be denoted as a base station or an access point.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

In the present application, "first" and "second" … … are intended to distinguish between a plurality of objects having the same name, and unless otherwise specified, have no meaning of order or size.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.

Claims

1. A wireless signal transmission power adjustment method for a terminal side device, comprising the steps of:

2. The method of claim 1, wherein,

transmitting the power indication value in response to the downlink reference signal received power being greater than or less than a first threshold value; the power indication value is used to indicate a requested power adjustment value for decreasing or increasing the power value of the target PUCCH.

3. A wireless signal transmission power adjustment method for a network side device, comprising the steps of:

4. A radio signal transmission power adjustment method according to any one of claims 1 to 3, characterized in that,

the power indication value is used for indicating at least one of the following:

maximum transmission power configured at the terminal side, a power margin value of the terminal side equipment, and a requested power adjustment value.

5. A radio signal transmission power adjustment method according to any one of claims 1 to 3, characterized in that,

the transmission time of the target PUCCH is between a first time point and a second time point;

the terminal side equipment receives the Msg4 of the type 1 random access process or the Msg B of the type 2 random access process for the first time at the first time point;

the terminal side equipment determines private PUCCH configuration at the second time point;

the time of transmitting the HARQ-ACK information with the private PUCCH configuration resource is after the second point in time.

6. A radio signal transmission power adjustment method according to any one of claims 1 to 3, characterized in that,

7. A radio signal transmission power adjustment method according to any one of claims 1 to 3, characterized in that,

the target PUCCH power adjustment value belongs to a first set, the power adjustment value of the private PUCCH belongs to a second set, and at least one value in the first set is larger than the maximum value in the second set.

8. A radio signal transmission power adjustment method according to any one of claims 1 to 3, characterized in that,

the power indication value further includes a repeat transmission request state of the target PUCCH for indicating the number of repetitions of the target PUCCH.

9. Terminal-side device for implementing the method according to any one of claims 1-2, 4-8, characterized in that,

at least one module in the terminal side device is used for at least one of the following functions: determining a power indication value, transmitting the power indication value in Msg1, msg3 or MsgA of the random access procedure; the power adjustment value of the target PUCCH is obtained and determined from Msg2, msg4 or Msg B of the random access process; and determining configuration of the private PUCCH resources.

10. A network-side device for implementing the method according to any one of claims 3 to 8, characterized in that,

at least one module in the network side equipment is used for at least one of the following functions: obtaining a power indication value in Msg1, msg3 or MsgA of the random access procedure; determining a power adjustment value of a target PUCCH, and transmitting the power adjustment value of the target PUCCH in Msg2, msg4 or Msg B of a random access procedure; determining a configuration of the private PUCCH resource, transmitting the private PUCCH resource in Msg2, msg4 or MsgB of the random access procedure.

11. A communication device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of claims 1 to 8.

12. A computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1-8.

13. A mobile communication system comprising at least 1 terminal-side device according to claim 9 and/or at least 1 network-side device according to claim 10.