Power control method and device, terminal and network side equipment

Abstract

The invention discloses a power control method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the power control method comprises the steps that under the condition that the terminal works in a full duplex mode, the terminal determines the sending power of a first random access message according to random access related information; wherein the random access related information comprises at least one of the following items: a resource type of a first sending resource and resource position related information of the first sending resource; the first sending resource is a sending resource of a target random access message, and the target random access message comprises at least one of the first random access message and the second random access message.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a power control method, device, terminal and network side equipment. Background Art

[0002] When the terminal works in full-duplex mode, when receiving downlink transmission sent by the network side device (for example, base station), it will be interfered by the signal of uplink transmission from the terminal itself, that is, self-interference. If the terminal initiates random access while receiving downlink transmission, the impact of self-interference is related to the transmit power of the random access message sent by the terminal. However, in the prior art, there is no corresponding solution for how to control the transmit power of the random access message when the terminal works in full-duplex mode, so it is difficult to ensure full-duplex transmission performance. Summary of the invention

[0003] The embodiments of the present application provide a power control method, apparatus, terminal and network-side equipment, which can provide a control method for the transmission power of a random access message when the terminal operates in full-duplex mode, so that the transmission power of the random access message can be better adapted to the transmission in the full-duplex mode, thereby facilitating the full-duplex transmission performance.

[0004] In a first aspect, a power control method is provided, the method comprising:

[0005] When the terminal operates in full-duplex mode, the terminal determines the transmit power of the first random access message according to the random access related information;

[0006] Among them, the random access related information includes at least one of the following: the resource type of the first sending resource, the resource location related information of the first sending resource; the first sending resource is the sending resource of the target random access message, and the target random access message includes at least one of the first random access message and the second random access message.

[0007] In a second aspect, a power control device is provided, the device comprising:

[0008] A determination module, configured to determine, when the terminal operates in full-duplex mode, a transmit power of the first random access message according to random access related information;

[0009] Among them, the random access related information includes at least one of the following: the resource type of the first sending resource, the resource location related information of the first sending resource; the first sending resource is the sending resource of the target random access message, and the target random access message includes at least one of the first random access message and the second random access message.

[0010] In a third aspect, a power control method is provided, the method comprising:

[0011] The network side device sends a first power parameter, wherein the first power control parameter is used to send a first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource.

[0012] In a fourth aspect, a power control device is provided, the device comprising:

[0013] A sending module is used to send a first power parameter, wherein the first power control parameter is used to send a first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource.

[0014] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0015] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is used to determine the transmission power of a first random access message based on random access related information when the terminal operates in full-duplex mode; wherein the random access related information includes at least one of the following: a resource type of a first transmission resource, and information related to a resource location of the first transmission resource; the first transmission resource is a transmission resource of a target random access message, and the target random access message includes at least one of the first random access message and a second random access message.

[0016] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the third aspect are implemented.

[0017] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to send a first power parameter, wherein the first power control parameter is used to send a first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource.

[0018] In the ninth aspect, a power control system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the power control method as described in the first aspect, and the network side device can be used to execute the steps of the power control method as described in the third aspect.

[0019] In the tenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0020] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the third aspect.

[0021] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the third aspect.

[0022] In an embodiment of the present application, when the terminal operates in full-duplex mode, the terminal determines the transmit power of the first random access message according to the random access related information; wherein the random access related information includes at least one of the following: a resource type of a first transmit resource, and resource location related information of the first transmit resource; the first transmit resource is a transmit resource of a target random access message, and the target random access message includes at least one of the first random access message and a second random access message. That is, in an embodiment of the present application, when the terminal operates in full-duplex mode, the transmit power of the first random access message is determined according to at least one of the resource type and resource location related information of the transmit resource of the target random access message, so that the transmit power of the random access message can be better adapted to the transmission in the full-duplex mode, thereby facilitating the full-duplex transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0024] Figure 2a is a schematic diagram of a flexible duplex mode provided in an embodiment of the present application;

[0025] Figure 2b It is a schematic diagram of uplink transmission and downlink transmission in SBFD mode provided by an embodiment of the present application;

[0026] Figure 3 is a flow chart of a power control method provided by an embodiment of the present application;

[0027] Figure 4is a flow chart of another power control method provided by an embodiment of the present application;

[0028] Figure 5 is a structural diagram of a power control device provided in an embodiment of the present application;

[0029] Figure 6 is a structural diagram of another power control device provided in an embodiment of the present application;

[0030] Figure 7 is a structural diagram of a communication device provided in an embodiment of the present application;

[0031] Figure 8 is a structural diagram of a terminal provided in an embodiment of the present application;

[0032] Fig. 9 It is a structural diagram of the network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0034] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0035] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0036] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0037] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AP) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0038] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0039] For ease of understanding, some contents involved in the embodiments of the present application are described below:

[0040] 1. Subband Full Duplex on the Base Station Side and Half Duplex on the Terminal Side

[0041] When deploying traditional cellular networks, frequency division duplex (FDD) or time division duplex (TDD) can be used based on the available spectrum and service characteristics. When FDD is used, uplink and downlink transmissions are located at different frequencies, and the two do not interfere with each other and can be carried out simultaneously. When TDD is used, uplink and downlink transmissions are located at the same frequency and are carried out in a staggered manner using time division. Both duplex methods have their own advantages and disadvantages.

[0042] In order to more flexibly utilize limited spectrum resources, dynamically match business needs, improve resource utilization efficiency, and the uplink coverage, delay and other performance of data transmission, a flexible duplex mode is proposed. A flexible duplex mode, namely non-overlapping Sub-band Full Duplex (SBFD), is: full duplex on the network side, that is, at the same time, uplink transmission and downlink transmission can be carried out simultaneously at different frequency domain positions. In order to avoid interference between uplink and downlink, a certain protection bandwidth (GuardBand) can be reserved between the frequency domain positions (corresponding to the duplex sub-band) corresponding to different transmission directions; half duplex on the terminal side, that is, consistent with TDD, at the same time, only uplink transmission or downlink transmission can be carried out, and both cannot be carried out at the same time. It can be understood that in this duplex mode, the uplink transmission and downlink transmission on the network side at the same time can only be for different terminals.

[0043] Figure 2a This is a schematic diagram of the flexible duplex mode. In a part of the downlink symbol, the network side semi-statically divides the frequency domain of a single carrier into three duplex subbands, where the two sides of the carrier are downlink duplex subbands and the center is uplink duplex subbands to reduce interference to adjacent carriers. In the third time slot, UE1 and UE2 perform uplink transmission and downlink reception respectively. At this time, the terminal works in half-duplex mode. Figure 2b FIG. 4 shows a schematic diagram of uplink transmission and downlink transmission in SBFD mode. Figure 2b As shown, when the terminal works in full-duplex mode, when receiving the downlink transmission sent by the base station, it will be interfered by the signal from the uplink transmission of the terminal itself, and may also cause side link interference to the downlink transmission of other terminals.

[0044] 2. Random Access Process

[0045] In the prior art, the random access process may be a contention-based random access process or a non-contention-based random access process. The random access process may be a four-step random access process (also called a Type-1 random access process) or a two-step random access process (also called a Type-2 random access process).

[0046] In the competitive 4-step Random Access Channel (RACH) process, the UE first sends Msg1 to the network, including a preamble; after the network detects the preamble, it will send a Msg2 / Random Access Response (RAR) message, including the number of the preamble detected by the network and the uplink wireless resources allocated to the UE to send Msg3; after receiving Msg2, the UE confirms that at least one of the numbers of the preamble carried in Msg2 is consistent with the number of the preamble sent by itself, and then sends Msg3 containing contention resolution information according to the resources indicated by RAR; after receiving Msg3, the network will send Msg4 containing contention resolution information; after receiving Msg4, the UE confirms that the resolution information is consistent with that sent by itself in Msg3, and the 4-step random access is completed.

[0047] The network includes uplink grant (UL grant) information in the RAR to indicate the scheduling information of the Msg3 physical uplink shared channel (PUSCH), and includes RACH preamble ID (RAPID), temporary cell radio network temporary identity (TC-RNTI), time advance (TA) and other information. If the network does not receive the Msg3 PUSCH, it can schedule the retransmission of the Msg3 PUSCH in the TC-RNTI scrambled physical downlink control channel (PDCCH).

[0048] For the contention random access process, different UEs randomly select preambles for transmission, so different UEs may select the same preamble to send on the same time-frequency wireless resources (random access opportunity (RACH Occasion, RO) resources), which can be understood as a UE preamble conflict. In this case, different UEs will receive the same RAR, and at this time, different UEs will transmit Msg3 PUSCH according to the scheduling information in the RAR UL grant. Since the existing technology does not support repeated transmission of Msg3 PUSCH, the network can only decode a PUSCH (including contention resolution information) sent by one UE on one Msg3 PUSCH scheduling resource, so the network will include the contention resolution information received in Msg3 in Msg4. If the contention resolution information in Msg4 received by the UE matches the contention resolution information sent by the UE in Msg3 PUSCH, the UE considers that the contention resolution is successful. If they do not match, the contention resolution is considered unsuccessful.

[0049] If the contention resolution is unsuccessful, the UE reselects RACH transmission resources, performs physical random access channel (PRACH) transmission, and makes the next random access attempt.

[0050] In NR Rel-16, the two-step random access process 2-step RACH was introduced. The first step is that the UE sends MsgA to the network side. After receiving MsgA, the network side sends a MsgB message to the UE. If the UE does not receive MsgB within a certain period of time, the UE will accumulate the counter that counts the number of times MsgA is sent and resend MsgA. If the counter that counts the number of times MsgA is sent reaches a certain threshold, the UE will switch from the 2-step random access process to the 4-step random access process. MsgA includes the MsgApreamble part and the MsgAPUSCH part. The preamble part is sent on the RO used for 2-step RACH, and the PUSCH part is sent on the MsgAPUSCH resources associated with the sending of the MsgApreamble and the RO. MsgA PUSCH resources are a set of PUSCH resources configured relative to each PRACH slot, including time-frequency resources and demodulation reference signal (DMRS) resources.

[0051] 3. Uplink Power Control

[0052] In the design of NR system, new features are considered in uplink, such as uplink transmission based on Orthogonal Frequency Division Multiplexing (OFDM) and single-symbol uplink control channel. Uplink power control is also an important content, including the following:

[0053] There is no LTE-like cell-specific reference signal for path loss estimation;

[0054] Beam-based transmission / reception;

[0055] Analog beamforming at gNB / UE;

[0056] Multi-beam / multi-stream transmission;

[0057] Multiple numerology;

[0058] Information exchange between TRPs;

[0059] Road damage compensation.

[0060] According to the uplink power control in the current LTE system, two path loss compensation methods are considered; one is full path loss compensation and the other is partial path loss compensation. In the NR system, it can be considered that the UE measures the Reference Signal Receiving Power (RSRP) by using a specific type of RS, and then the UE uses RSRP to derive the path loss between the UE and its associated gNB.

[0061] By taking into account the estimated path loss, the uplink transmission power from the UE will be fully or partially compensated. First, full path loss compensation can maximize fairness to cell-edge UEs, in other words, the power received on the gNB side from cell-edge UEs will be comparable to the power received from cell-center UEs. On the other hand, if partial path loss compensation is used, the gNB-side received power from cell-center UEs will be much higher than that from cell-edge UEs. The path loss of cell-edge UEs can be compensated by adjusting other power parameters or offsets so that the power received from cell-edge UEs can be appropriately controlled, while the power received from cell-center UEs may be redundant due to the already sufficient received power.

[0062] In the case of uplink data channel transmission, this redundant power can be used to improve spectral efficiency by applying a higher modulation and coding scheme (MCS) level, for example, a cell center UE can use a smaller number of physical resource blocks (PRBs) for the same transport block (TB) size. On the other hand, in the case of uplink control channel transmission using a fixed amount of resources, it is unclear how to use redundant power to improve spectral efficiency, because the uplink control information (UCI) size will not depend on the UE location or channel conditions. Therefore, it is better to consider full compensation of uplink control channel power control.

[0063] In addition, in the case of partial path loss compensation for uplink data channel transmission, the value of the partial path loss compensation factor can be used to adjust the received power difference between the cell center UE and the cell edge UE, and this value can vary according to the cell radius and target performance.

[0064] 4. Transmission Power Control (TPC) command

[0065] TPC commands can be used to compensate for channel variations caused by fast fading. With respect to current LTE, the physical uplink control channel (PUCCH) power can be adjusted by TPC commands signaled in the downlink allocation downlink control information (DCI), while the PUSCH (or SRS) power can be adjusted by TPC commands signaled in the uplink grant DCI. In addition, for uplink transmissions without associated DCI, such as Semi-Persistent Scheduling (SPS), periodic channel state information (CSI), or SRS, TPC commands can be signaled to a specific UE group (UE group) by using DCI format 3 / 3A. There are two types of TPC procedures for updating uplink transmit power; one is cumulative TPC and the other is absolute TPC. Cumulative TPC is well suited for fine-tuning UE transmit power by using a relatively small step size of TPC values. On the other hand, absolute TPC can be used to immediately increase UE transmit power by using a relatively large step size of TPC values.

[0066] 5. Additional functions of power control in NR

[0067] In NR design, it is necessary to consider deployment based on analog (or hybrid) beamforming, especially for high frequency bands (e.g., above 6 GHz). With such analog beamforming, gNB TX / RX beam scanning (e.g., TDM between different gNB TX / RX beams) may be required not only for transmission of downlink common signals and information, such as synchronization signals (e.g., Primary Synchronization Signal (PSS) / Secondary Synchronization Signal (SSS) in LTE) or broadcast system information (e.g., Physical Broadcast Channel (PBCH) in LTE) but also for transmission of uplink and downlink control and data channels to serve UEs located in different areas (or beam directions). In this case, it may be necessary to consider differentiation of power control parameters between different beams for UEs, because the power required for UE performance will be different for each beam of the UE.

[0068] Typically, the amount of information transmitted through the uplink data channel will be much larger than the uplink control channel. Therefore, the power required for uplink data channel transmission will also be greater than the power of the uplink control channel. For NR design, TDM is considered for the multiplexing structure between uplink data and control channels to reduce latency, flexible uplink and downlink configurations, and analog beamforming. In the case where the uplink data and control channels are multiplexed via TDM, it is necessary to deal with the power imbalance between these two different channels, which may be larger than the current LTE. In addition, considering the various OFDM numerologies used for NR (e.g., different subcarrier spacing or symbol duration), it is also necessary to handle the power transient periods between the uplink data and control channels for certain numerologies (e.g., large subcarrier spacing).

[0069] 6. Power Control per TRP and per Layer

[0070] For high frequency bands in NR, the number of primary rays per TRP or single panel may be limited, and in order to achieve high Single-User Multiple-Input Multiple-Output (SU MIMO) spectrum efficiency, coordinated transmission schemes across multiple TRPs need to be thoroughly studied in NR, including Coordinated Multiple Points (CoMP) Dynamic Point Selection (DPS) and independent layer Joint Transmission (JT). When the downlink-related DCI indicates the transmission rank and the applied coordination scheme, the DCI decoding delay on the UE side may be a major problem whenever simulated beamforming is applied in a given time instance. This is because the DCI transmission can be performed by the serving TRP, but as an example, the actual data transmission can be performed by another TRP.

[0071] In the case of independent layer JT, where specific layers may be transmitted from different TRPs, the uplink transmit power corresponding to each layer group may need to be configured and controlled by the gNB, since at least the path loss from different TRPs may be different. In addition, separate uplink power control procedures for different TRPs need to be further studied in the context of uplink CoMP.

[0072] 7. Preamble target receiving power

[0073] The target received power of the preamble (PREAMBLE_RECEIVED_TARGET_POWER) is calculated by the following formula:

[0074] preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER–1)×PREAMBLE_POWER_RAMPING_STEP

[0075] Among them, preambleReceivedTargetPower is the initial power of the preamble that the gNB expects to receive; DELTA_PREAMBLE is related to the preamble format; PREAMBLE_POWER_RAMPING_STEP is the transmit power increased at the next access after each access failure; PREAMBLE_POWER_RAMPING_COUNTER is the number of times the transmit power is increased.

[0076] The actual transmission power of the preamble is calculated as follows:

[0077] P PRACH，b，f，c (i) = min{P CMAX，f，c (i), P PRACH，target，f，c +PL b，f，c}

[0078] Among them, P CMAX,f,c (i) is the maximum transmission power configured for the UE on carrier f of serving cell C at transmission occasion i (the maximum transmission power of the UE is 23 dBm); P PRACH,target,f,c is the PRACH target received power PREAMBLE_RECEIVED_TARGET_POWER on the activated UL BWP b of carrier f on serving cell C; PL b,f,c is the path loss of the activated UL BWP b of carrier f of the DL RS associated with the PRACH transmission on the activated DL BWP of serving cell C, and PL b,f,c Equal to referenceSignalPower (in dB) - higher layer filtered RSRP (in dBm, RRC filtering).

[0079] If PL b,f,c Based on the DL BWP being the initial DL BWP and multiplexing mode 2 or 3 for the Synchronisation Signal Block (SSB) and Control Resource Set (CORESET), the UE determines the PL BWP based on the SSB associated with the PRACH transmission. b,f,c .

[0080] 8. PRACH Power Control

[0081] The initial transmit power of the UE is first related to two factors: the initial receive power (sensitivity) expected by the base station and the path loss (Path Loss) between the base station and the UE. The base station informs the UE in advance of the initial receive power (preamble InitialReceived Target Power in LTE and preamble Received Target Power parameter in NR) and the reference signal transmit power (reference signal power parameter in LTE and ss PBCH-Block Power (SSB) parameter and power Control Offset SS (for CSI-RS) parameter in NR). The UE can calculate the path loss (reference signal transmit power – reference signal receive power) and the initial transmit power (base station initial receive power + path loss) based on the actual measured reference signal receive power.

[0082] In NR, since the Cell Reference Signal (CRS) is cancelled to reduce the always-on signal overhead, the reference signal measured by the UE is SSB or Channel-State Information Reference Signal (CSI-RS). In LTE, path loss is recorded as PL c In NR, due to the introduction of the concept of BWP (Bandwidth Part), the path loss is recorded as PL b,f,c , where b represents BWP, f represents carrier, and c represents cell.

[0083] In NR, the mechanism of Msg1 power increase is similar to that of LTE, but slightly different. In NR, the PRACH (Occasion) of the UE to send Msg1 is associated with the SSB beam. If the UE selects the same SSB beam or CSI-RS beam when reselecting RA resources (and does not receive a notification to suspend power increase from the bottom layer), the transmit power will be increased only when the Msg1 is retransmitted. If the UE selects a different SSB beam or CSI-RS beam, the transmit power will not be increased temporarily.

[0084] The preamble signal of PRACH is configured with p PRACH，target , which has the same function as p0, and α is fixed to 1. If the PRACH transmitted according to this configuration does not receive RAR, the UE will perform power ramping until the power reaches P CMAX Or until PRACH receives RAR.

[0085] The power control method provided in the embodiment of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0086] See also Figure 3 , Figure 3 is a flow chart of a power control method provided in an embodiment of the present application, which can be executed by a terminal, such as Figure 3 As shown, the following steps are included:

[0087] Step 301: When the terminal operates in full-duplex mode, the terminal determines a transmit power of a first random access message according to random access related information;

[0088] Among them, the random access related information includes at least one of the following: the resource type of the first sending resource, the resource location related information of the first sending resource; the first sending resource is the sending resource of the target random access message, and the target random access message includes at least one of the first random access message and the second random access message.

[0089] In this embodiment, the first random access message may be any random access message, wherein the random access message may include but is not limited to at least one of the following: Msg1, Msg3, MsgA, Common PUCCH (Common PUCCH), Msg5, SRS.

[0090] The second random access message may also be any random access message. In some optional embodiments, the second random access message may be a random access message related to the first random access message in a random access process initiated by a terminal. Exemplarily, the second random access message may be a random access message corresponding to the first random access message in a random access process initiated by a terminal, for example, the second random access message is Msg1, and the first random access message is Msg3; or, the second random access message may be a random access message sent before the first random access message is sent in a random access process initiated by a terminal, for example, the first random access message is Msg5, and the second random access message is Msg1 or Msg3, wherein the Msg5 may refer to a PUSCH transmitted uplink after Msg4.

[0091] The first transmission resource is a transmission resource of the target random access message. For example, if the target random access message is a first random access message, the first transmission resource is a transmission resource of the first random access message; if the target random access message is a second random access message, the first transmission resource is a transmission resource of the second random access message; if the target random access message includes a first random access message and a second random access message, the first transmission resource includes a transmission resource of the first random access message and a transmission resource of the second random access message. Exemplarily, the first transmission resource may include but is not limited to at least one of the following: RO resources, Msg3 PUSCH resources, MsgA PUSCH resources, CommonPUCCH resources, Msg5 PUSCH resources, PRACH resources, MsgAPRACH resources, SRS resources.

[0092] The resource type of the above-mentioned first sending resource can be determined based on at least one of the time domain resource information of the first sending resource and the frequency domain resource information of the first sending resource. Exemplarily, the resource type of the first sending resource can be determined based on at least one of the time domain format of the time domain resource where the first sending resource is located and the relationship between the time domain resource of the first sending resource and the time domain resource where the target signal is located. For example, when the time domain format of the time domain resource where the first sending resource is located is the first time domain format, the resource type of the first sending resource is determined to be type a1; when the time domain format of the time domain resource where the first sending resource is located is the second time domain format and does not include the target signal, the resource type of the first sending resource is determined to be type a2; or, the resource type of the first sending resource can be determined based on the size of the frequency domain interval between the frequency domain resource of the first sending resource and the DL transmission resource. For example, when the frequency domain interval between the frequency domain resource of the first sending resource and the DL transmission resource is greater than a first threshold, the resource type of the first sending resource is determined to be type a3; when the frequency domain interval between the frequency domain resource of the first sending resource and the DL transmission resource is less than or equal to the first threshold, the resource type of the first sending resource is determined to be type a4. The first time domain format is a time domain format for uplink transmission only, the second time domain format is a time domain format for full-duplex transmission, and the target signal includes a downlink common signal or a downlink broadcast signal.

[0093] The resource location related information of the above-mentioned first sending resource may include at least one of the time domain resource location related information and frequency domain resource location related information of the above-mentioned first sending resource. Exemplarily, the resource location related information of the above-mentioned first sending resource may include at least one of the following: the frequency domain position of RO, the time domain position of RO, the time domain position of MsgAPUSCHOccasion, the frequency domain position of MsgA PUSCH Occasion, the frequency domain position of Msg3 PUSCH, the frequency domain position of CommonPUCCH, the frequency domain position of Msg5 PUSCH, and the frequency domain position of SRS.

[0094] It should be noted that, corresponding to the type of the above-mentioned target random access message, the above-mentioned random access related information may include but is not limited to at least one of the following: RACH configuration related information, MsgAPUSCH related information, Msg3 PUSCH related information, Common PUCCH related information, Msg5 related information, SRS related information. For example, if the above-mentioned target random access message is MsgA, the above-mentioned random access related information may include MsgA PUSCH related information, and the MsgA PUSCH related information may include at least one of the resource type and resource location related information of the sending resource of MsgA PUSCH; if the above-mentioned target random access message is Msg3, the above-mentioned random access related information may include Msg3 related information, and the Msg3 related information may include at least one of the resource type and resource location related information of the sending resource of Msg3.

[0095] In one embodiment, the terminal determines the transmission power of the first random access message according to the resource type of the first transmission resource. Exemplarily, different resource types may correspond to different power parameters. For example, the power parameters corresponding to different resource types may be agreed upon by the protocol, or the power parameters corresponding to different resource types may be configured by the network side device, or the power parameters corresponding to different resource types may be determined by the terminal according to different resource types. In this way, the terminal may determine the power parameter corresponding to the resource type of the first transmission resource based on the resource type of the first transmission resource, and further determine the transmission power of the first random access message based on the power parameter corresponding to the resource type of the first transmission resource. This is beneficial to ensure the transmission performance of the random access message when the terminal works in full-duplex mode, while reducing the interference of the transmission of the random access message to the downlink transmission. Among them, the above-mentioned power parameters may include but are not limited to at least one of the power offset value, the power compensation factor, the target receiving power and the power boost parameter.

[0096] For example, if the resource types of the random access message sending resources include type a1 and type a2, and type a1 corresponds to a first power parameter, and type a2 corresponds to a second power parameter, then when the terminal determines that the resource type of the first sending resource is type a1, it can determine the sending power of the first random access message based on the first power parameter; when it determines that the resource type of the first sending resource is type a2, it can determine the sending power of the first random access message based on the second power parameter.

[0097] In another implementation, the terminal determines the transmission power of the first random access message according to the resource location related information of the first transmission resource. Exemplarily, different positional relationships between the resource position of the random access message sending resource and the resource position of the downlink transmission resource may correspond to different power parameters. For example, the power parameters corresponding to different positional relationships between the resource position of the random access message sending resource and the resource position of the downlink transmission resource may be agreed upon by the protocol, or the power parameters corresponding to different positional relationships between the resource position of the random access message sending resource and the resource position of the downlink transmission resource may be configured by the network side device, or the power parameters corresponding to the resource position of the random access message sending resource may be determined by the terminal according to the positional relationship between the resource position of the random access message sending resource and the resource position of the downlink transmission resource. In this way, the terminal may determine the power parameter corresponding to the positional relationship between the resource position of the first sending resource and the resource position of the downlink transmission resource based on the positional relationship between the resource position of the first sending resource and the resource position of the downlink transmission resource, and further determine the sending power of the first random access message based on the power parameter corresponding to the positional relationship between the resource position of the first sending resource and the resource position of the downlink transmission resource. This is beneficial for ensuring the sending performance of the random access message when the terminal operates in full-duplex mode while reducing the interference of the sending of the random access message on the downlink transmission.

[0098] For example, if the frequency domain interval between the resource position of the random access message sending resource and the DL transmission resource is greater than the first threshold, it corresponds to the third power parameter, and the frequency domain interval between the resource position of the random access message sending resource and the DL transmission resource is less than or equal to the first threshold, it corresponds to the fourth power parameter, then when the terminal determines that the frequency domain interval between the frequency domain resource of the first sending resource and the DL transmission resource is greater than the first threshold, the terminal can determine the sending power of the first random access message based on the third power parameter, and when it determines that the frequency domain interval between the frequency domain resource of the first sending resource and the DL transmission resource is less than or equal to the first threshold, the terminal can determine the sending power of the first random access message based on the fourth power parameter.

[0099] In another embodiment, the terminal determines the transmission power of the first random access message based on the resource type of the first transmission resource and the information related to the resource location of the first transmission resource. For example, when the terminal determines that the resource type of the first transmission resource is type a1, the terminal can determine the transmission power of the first random access message based on the fifth power parameter; when the terminal determines that the resource type of the first transmission resource is type a2 and the frequency domain interval between the frequency domain resources of the first transmission resource and the DL transmission resource is greater than or equal to the first threshold, the terminal can determine the transmission power of the first random access message based on the sixth power parameter; when the terminal determines that the resource type of the first transmission resource is type a2 and the frequency domain interval between the frequency domain resources of the first transmission resource and the DL transmission resource is less than the first threshold, the terminal can determine the transmission power of the first random access message based on the seventh power parameter. This is beneficial to ensuring the transmission performance of the random access message when the terminal operates in full-duplex mode, while reducing the interference of the transmission of the random access message on the downlink transmission.

[0100] It can be understood that, after determining the transmit power of the first random access message, the terminal may transmit the first random access message based on the transmit power of the first random access message.

[0101] In an embodiment of the present application, when the terminal operates in full-duplex mode, the terminal determines the transmit power of the first random access message according to the random access related information; wherein the random access related information includes at least one of the following: a resource type of a first transmit resource, and resource location related information of the first transmit resource; the first transmit resource is a transmit resource of a target random access message, and the target random access message includes at least one of the first random access message and a second random access message. That is, in an embodiment of the present application, when the terminal operates in full-duplex mode, the transmit power of the first random access message is determined according to at least one of the resource type and resource location related information of the transmit resource of the target random access message, so that the transmit power of the random access message can be better adapted to the transmission in the full-duplex mode, thereby facilitating the full-duplex transmission performance.

[0102] Optionally, the resource type of the first sending resource is determined based on at least one of the following: the time domain format of the time domain resources where the target random access message is located, the relationship between the time domain resources where the target random access message is located and the time domain resources where the target signal is located; the target signal includes a downlink common signal or a downlink broadcast signal.

[0103] In this embodiment, the time domain format may include at least one of a first time domain format, a second time domain format and a third time domain format. The first time domain format is a time domain format for uplink (UL) transmission only, that is, the transmission direction of the time domain resources of the first time domain format is only uplink transmission. The second time domain format is a time domain format for full-duplex transmission, for example, the second time domain format is a time domain format for subband full-duplex transmission, that is, the transmission direction of the time domain resources of the second time domain format includes uplink transmission and downlink transmission, for example, DL subband and UL subband respectively include DL transmission and UL transmission. The third time domain format is a time domain format for downlink (DL) transmission only, that is, the transmission direction of the time domain resources of the third time domain format is only downlink transmission.

[0104] It should be noted that the first time domain format may also be referred to as a UL time domain format, the second time domain format may also be referred to as an X time domain format, and the third time domain format may also be referred to as a DL time domain format.

[0105] The relationship between the time domain resource where the target random access message is located and the time domain resource where the target signal is located, for example, whether the time domain resource where the target random access message is located overlaps with the time domain resource where the target signal is located. It should be noted that the overlap between the time domain resource where the target random access message is located and the time domain resource where the target signal is located can also be referred to as the time domain resource where the target random access message is located including the target signal, and the non-overlap between the time domain resource where the target random access message is located and the time domain resource where the target signal is located can also be referred to as the time domain resource where the target random access message is located not including the target signal.

[0106] In one embodiment, the type of random access message sending resources can be determined according to the time domain format of the time domain resources where the random access message is located. For example, when the time domain format of the time domain resources where the target random access message is located is the first time domain format, the resource type of the first sending resource is determined to be type b1; when the time domain format of the time domain resources where the target random access message is located is the second time domain format, the resource type of the first sending resource is determined to be type b2.

[0107] In another embodiment, the type of random access message sending resources can be determined based on the relationship between the time domain resources where the random access message is located and the time domain resources where the target signal is located. For example, when the time domain resources where the target random access message is located overlap with the time domain resources where the target signal is located, the resource type of the first sending resource is determined to be type b3; when the time domain resources where the target random access message is located do not overlap with the time domain resources where the target signal is located, the resource type of the first sending resource is determined to be type b4.

[0108] In another embodiment, the type of random access message sending resources can be determined according to the time domain format of the time domain resources where the random access message is located and the relationship between the time domain resources where the random access message is located and the time domain resources where the target signal is located. For example, when the time domain format of the time domain resources where the target random access message is located is the first time domain format, the resource type of the first sending resource is determined to be type b5; when the time domain format of the time domain resources where the target random access message is located is the second time domain format and the time domain resources where the target random access message is located does not overlap with the time domain resources where the target signal is located, the resource type of the first sending resource is determined to be type b6; when the time domain format of the time domain resources where the target random access message is located is the second time domain format and the time domain resources where the target random access message is located overlap with the time domain resources where the target signal is located, the resource type of the first sending resource is determined to be type b7.

[0109] Optionally, the resource type includes at least one of the following:

[0110] A first type, where the first type is used to represent a random access message sending resource located on a time domain resource whose time domain format is a first time domain format;

[0111] A second type, where the second type is used to indicate a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and does not include a target signal;

[0112] A third type, the third type being used to represent a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and contains a target signal;

[0113] A fourth type, wherein the fourth type is used to represent a random access message sending resource located on a target time domain resource, wherein the time interval between the target time domain resource and a synchronization signal block SSB is greater than or equal to a preset value, and the target time domain resource includes a target signal;

[0114] The first time domain format is a time domain format for uplink transmission only, the second time domain format is a time domain format for full-duplex transmission, and the target signal includes a downlink common signal or a downlink broadcast signal.

[0115] In this embodiment, the resource type of the random access message sending resource may include at least one of the first type, the second type, the third type and the fourth type. Among them, the above-mentioned random access message sending resource can be understood as the sending resource of the random access message. The above-mentioned first time domain format and the second time domain format can refer to the above-mentioned related instructions and are not repeated here. The above-mentioned target signal includes a downlink common signal or a downlink broadcast signal, for example, SSB, system information block (SystemInformation Block, SIB), master information block (Master Information Block, MIB) or paging (Paging), etc. The above-mentioned preset value can be agreed upon by protocol or configured by network side equipment or determined by the terminal. Exemplarily, the above-mentioned target time domain resources may include a group of time domain symbols (symbol).

[0116] Specifically, for the resource type of the first sending resource, when the first sending resource is located on a time domain resource whose time domain format is the second time domain format and does not include a target signal, the resource type of the first sending resource is determined to be the first type; when the first sending resource is located on a time domain resource whose time domain format is the second time domain format and does not include a target signal, the resource type of the first sending resource is determined to be the second type; when the first sending resource is located on a time domain resource whose time domain format is the second time domain format and includes a target signal, the resource type of the first sending resource is determined to be the third type; when the first sending resource is located on the target time domain resource, the resource type of the first sending resource is determined to be the fourth type.

[0117] It should be noted that the first type mentioned above may also be called type 1, the second type mentioned above may also be called type 2, the third type mentioned above may also be called type 3, and the fourth type mentioned above may also be called type 4.

[0118] Optionally, the resource location related information of the first sending resource includes at least one of time domain location related information and frequency domain location related information of the first sending resource.

[0119] In some optional embodiments, when the first sending resource is located on a time domain resource whose time domain format is a second time domain format, the terminal determines the sending power of the first random access message based on at least one item of the time domain position related information and the frequency domain position related information of the first sending resource. For example, when the resource type of the first sending resource is the above-mentioned second type or third type, the terminal determines the sending power of the first random access message based on at least one item of the time domain position related information and the frequency domain position related information of the first sending resource.

[0120] Optionally, the information related to the frequency domain position of the first sending resource includes at least one of the following: the position of the frequency domain resource of the first sending resource, and the frequency domain interval between the frequency domain resource of the first sending resource and a downlink transmission resource.

[0121] Exemplarily, the above-mentioned downlink transmission resources may refer to frequency domain resources of a DL subband or a target signal (for example, SSB, SIB, MIB or Paging, etc.).

[0122] Exemplarily, for the cases where the frequency domain position of the random access message sending resource and the frequency domain interval of the DL transmission resource is greater than the first threshold and the frequency domain interval of the frequency domain position of the random access message sending resource and the frequency domain interval of the DL transmission resource is less than or equal to the first threshold, different transmission powers can be used to send the random access message.

[0123] Optionally, the downlink transmission resource includes at least one of the following:

[0124] Downlink subband (DL subband), frequency domain resources for downlink public signals, frequency domain resources for downlink broadcast signals.

[0125] Optionally, the first sending resource is located on a time domain resource whose time domain format is a second time domain format, and the second time domain format is a time domain format for full-duplex transmission.

[0126] In this embodiment, when the first sending resource is located on a time domain resource whose time domain format is the second time domain format, the terminal may determine the sending power of the first random access message according to the frequency domain position related information of the first sending resource.

[0127] Optionally, the method further comprises:

[0128] The terminal receives a first power parameter, wherein the first power control parameter is used to send the first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource;

[0129] The terminal determines, according to random access related information, a transmit power of a first random access message, including:

[0130] The terminal determines the transmission power of the first random access message according to the random access related information and the first power parameter.

[0131] Exemplarily, the resource type may include but is not limited to at least one of the first type, the second type, the third type and the fourth type. The power parameter may include but is not limited to at least one of a power offset value, a power compensation factor, a target received power and a power boost parameter.

[0132] Exemplarily, the network side device may configure power parameters corresponding to various resource types, that is, the above-mentioned first power parameter includes power parameters corresponding to various resource types. Taking the above-mentioned resource types including the above-mentioned first type, second type and third type as an example, the network side device may respectively configure the power parameters corresponding to the above-mentioned first type, the power parameters corresponding to the second type and the power parameters corresponding to the third type, and send them to the terminal, so that when the terminal determines the resource type of the first sending resource according to the random access related information, it determines the power parameter corresponding to the resource type of the first sending resource according to the resource type of the first sending resource and the power parameters corresponding to various resource types configured by the network side device, and then determines the sending power of the first random access message according to the power parameter corresponding to the resource type of the first sending resource.

[0133] For example, if the network side device configures a power offset value a1 corresponding to the above-mentioned first type, a power offset value a2 corresponding to the above-mentioned second type, and a power offset value a3 corresponding to the above-mentioned third type, then when the terminal determines that the resource type of the first sending resource is the first type according to the random access related information, the terminal determines the sending power of the first random access message according to the power offset value a1; when the terminal determines that the resource type of the first sending resource is the second type according to the random access related information, the terminal determines the sending power of the first random access message according to the power offset value a2; when the terminal determines that the resource type of the first sending resource is the third type according to the random access related information, the terminal determines the sending power of the first random access message according to the power offset value a3.

[0134] Optionally, when the first random access message is a physical random access channel PRACH of Msg1 or MsgA, the power parameter includes at least one of the following: a target received power corresponding to Msg1 or MsgA PRACH, a power offset value corresponding to Msg1 or MsgAPRACH, a power boost parameter corresponding to Msg1 or MsgA PRACH, and a maximum transmit power corresponding to Msg1 or MsgA PRACH;

[0135] or,

[0136] In the case where the first random access message is Msg3, the power parameter includes at least one of the following: a power offset value corresponding to Msg3, a power compensation factor corresponding to Msg3;

[0137] or,

[0138] In the case where the first random access message is MsgA Physical Uplink Shared Channel PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to MsgA PUSCH, a power compensation factor corresponding to MsgA PUSCH;

[0139] or,

[0140] In the case where the first random access message is a common physical uplink control channel PUCCH, the power parameter includes at least one of the following: a power offset value corresponding to the common PUCCH, a power compensation factor corresponding to the common PUCCH;

[0141] or,

[0142] In the case where the first random access message is Msg5 PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to Msg5 PUSCH, a power compensation factor corresponding to Msg5 PUSCH, and a target received power corresponding to Msg5 PUSCH;

[0143] or,

[0144] In the case where the first random access message is a sounding reference signal SRS, the power parameter includes at least one of the following: a power offset value corresponding to the SRS, a power compensation factor corresponding to the SRS, and a target received power corresponding to the SRS.

[0145] In this embodiment, the power offset value may be a positive value or a negative value. The power ramping parameter may include but is not limited to at least one of a power ramping step length, a power ramping counter, and a maximum number of power ramping times.

[0146] Exemplarily, the power offset value corresponding to the above-mentioned Msg3 may include at least one of the following: a power offset value of Msg3 configured with the transmit power of PRACH sent in a half-duplex model as a reference value, and a power offset value of Msg3 configured with the transmit power of PRACH sent in a full-duplex model as a reference value. Among them, the power offset value of Msg3 configured with the transmit power of PRACH sent in a full-duplex model as a reference value may also be referred to as a power offset value of Msg3 configured for enhanced duplex mode, for example, Msg3-DeltaPreambleXdd.

[0147] Exemplarily, the power offset value corresponding to the above-mentioned MsgA PUSCH may include at least one of the following: a power offset value of the MsgA PUSCH configured with the transmit power of the PRACH sent in the half-duplex model as a reference value, and a power offset value of the MsgA PUSCH configured with the transmit power of the PRACH sent in the full-duplex model as a reference value. Among them, the power offset value of the MsgA PUSCH configured with the transmit power of the PRACH sent in the full-duplex model as a reference value may also be referred to as a power offset value of the MsgA PUSCH configured for enhanced duplex mode, for example, MsgA-DeltaPreambleXdd.

[0148] Exemplarily, the above Xdd represents a certain time slot type, time domain format, and time domain type. Specifically, it can be configured through a full-duplex sub-band or indicated by a full-duplex sub-band, and can specifically include:

[0149] The time domain format indicated by TDD-UL-DL-Configuration, for example, DL, UL, Flexible;

[0150] The time domain type indicated by xdd-UL-DL-Configuration, for example, Full DL, Full UL, SBFD X;

[0151] The frequency format of the full-duplex subband configuration indication, for example, DL subband, UL subband, Guard band, DL BWP, UL BWP.

[0152] For the target received power corresponding to the Msg5 PUSCH, exemplarily, the power parameter may directly include the target received power corresponding to the Msg5 PUSCH, or may include a parameter for calculating the target received power corresponding to the Msg5 PUSCH, for example, the P corresponding to the Msg5 PUSCH. O_NOMINAL,PUSCH,f,c Value and Msg5 PUSCH corresponding P O_UE_PUSCH,b,f,c At least one of the values, where P O_NOMINAL,PUSCH,f,c The first part of the target received power of PUSCH, P O_UE_PUSCH,b,f,c The second part represents the target received power of the PUSCH, wherein both the first part and the second part can be configured by the network side device.

[0153] For the target received power corresponding to the SRS, exemplarily, the power parameter may directly include the target received power corresponding to the SRS, or may include a parameter for calculating the target received power corresponding to the SRS, for example, P O_SRS,b,f,c value.

[0154] It is understandable that the network side device can configure a set of the above power parameters for each resource type.

[0155] Optionally, the first random access message includes one of the following: Msg1, Msg3, MsgA, common PUCCH, Msg5, SRS.

[0156] Optionally, the first sending resource includes at least one of the following: RO resources, Msg3 PUSCH resources, MsgAPUSCH resources, common PUCCH resources, Msg5 PUSCH resources, and SRS resources.

[0157] Exemplarily, the RO resources may include RO resources for sending MsgA preamble in 2-step RACH or RO resources for sending Msg1 preamble in 4-step RACH.

[0158] Exemplarily, the above-mentioned SRS resources may include uplink SRS resources used for UL beam management in an idle or deactivated state.

[0159] Optionally, the common PUCCH is a PUCCH sent by the terminal on common PUCCH resources when a dedicated PUCCH resource is not acquired.

[0160] Optionally, the Msg5 is the first PUSCH transmitted after the physical downlink shared channel PDSCH of Msg4 is successfully received by the terminal.

[0161] The following examples illustrate the embodiments of the present application:

[0162] Example 1: When the UE performs full-duplex transmission, the UE determines the transmit power of Msg1 or MsgA PRACH according to the RO type.

[0163] Among them, RO types include the following three:

[0164] The first type: RO located on a time domain resource whose time domain format is UL;

[0165] The second type: RO located on a time domain resource with a time domain format of X and not containing downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.);

[0166] The third type: an RO located on a time domain resource whose time domain format is X and contains downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.).

[0167] The network side device configures different power offset values ​​(power offset) for the first type, second type and third type of PRACH respectively, where:

[0168] Power offset 1 corresponding to the first type = 0;

[0169] The second type corresponds to power offset2 = X;

[0170] The third type corresponds to power offset3=Y.

[0171] When the UE selects to initiate a RACH on an RO (i.e., a resource of the first type) located on a time domain resource whose time domain format is the first time domain format (i.e., the UL time domain format), the transmit power of the PRACH is determined according to the following formula:

[0172] P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c}[dBm];

[0173] When the UE chooses to initiate RACH on an RO (i.e., a second type of resource) located on a time domain resource whose time domain format is the second time domain format (i.e., the X time domain format) and does not contain a downlink common / broadcast signal (SSB / SIB / MIB / Paging, etc.), the transmit power of the PRACH is determined according to the following formula:

[0174] P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +offset2+PL b,f,c}[dBm];

[0175] When the UE chooses to initiate RACH on an RO (i.e., a third type of resource) located on a time domain resource whose time domain format is the second time domain format (i.e., the X time domain format) and contains downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.), the transmit power of the PRACH is determined according to the following formula:

[0176] P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +offset3+PL b,f,c}[dBm].

[0177] Among them, in the above formulas, P CMAX,f,c Indicates the maximum transmit power, P PRACH,target,f,c Indicates the target received power, PL b,f,c represents the path loss value, offset2 represents the power offset2 corresponding to the second type, offset3 represents the power offset3 corresponding to the third type, and i is an integer greater than or equal to 0.

[0178] Example 2: When the UE performs full-duplex transmission, the UE determines the transmit power of Msg3 according to the RO type.

[0179] Among them, RO types include the following three:

[0180] The first type: RO located on a time domain resource whose time domain format is UL;

[0181] The second type: RO located on a time domain resource with a time domain format of X and not containing downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.);

[0182] The third type: an RO located on a time domain resource whose time domain format is X and contains downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.).

[0183] The network side device configures different power offsets corresponding to Msg3 for the first type, second type and third type of PRACH respectively, where:

[0184] For Msg1, the first type of RO is used, and the corresponding power offset 1 of Msg3 is 0;

[0185] For Msg1, the second type of RO is used, and the corresponding power offset 2 of Msg3 is X1;

[0186] For Msg1, the third type of RO is adopted, and the corresponding power offset 3 of Msg3 is Y1.

[0187] When the UE selects to initiate RACH on a RO (i.e., a resource of the first type) located on a time domain resource whose time domain format is the first time domain format (i.e., the UL time domain format), when sending a Msg3 PUSCH scheduled by a RAR UL grant or DCI format 0_0 with CRC scrambled by a TC-RNTI, the transmit power of Msg3 is determined according to the following formula:

[0188] P Msg3 =min{P CMAX ,P UL_PC,PUSCH}[dBm];

[0189] When the UE selects to initiate RACH on an RO (i.e., a second type of resource) located on a time domain resource whose time domain format is the second time domain format (i.e., the X time domain format) and does not contain a downlink common / broadcast signal (SSB / SIB / MIB / Paging, etc.), when sending an Msg3PUSCH scheduled by an RAR UL grant or scheduled by a DCI format 0_0 with a CRC scrambled by a TC-RNTI, the transmit power of Msg3 is determined according to the following formula:

[0190] P Msg3 =min{P CMAX ,P UL_PC,PUSCH +offset2}[dBm];

[0191] When the UE selects to initiate RACH on an RO (i.e., a third type of resource) located on a time domain resource whose time domain format is the second time domain format (i.e., X time domain format) and contains downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.), when sending an Msg3PUSCH scheduled by RAR UL grant or DCI format 0_0 with a CRC scrambled by TC-RNTI, the transmit power of Msg3 is determined according to the following formula:

[0192] P Msg3 =min{P CMAX ,P UL_PC,PUSCH +offset3}[dBm].

[0193] Among them, in the above formulas, P CMA Indicates the maximum transmit power, P UL_PC,PUSCH represents the transmission power determined based on uplink power control, offset2 represents the power offset2 corresponding to the second type, offset3 represents the power offset3 corresponding to the third type, and i is an integer greater than or equal to 0.

[0194] Exemplarily, the above uplink power control can be implemented based on the following formula:

[0195] P=min[P CMAX ,{p0(j)+α(k)*PL(q)}+{f(l)}+{10lgM+Δ}]

[0196] In the above formula, P represents the power determined based on uplink power control, PCMAX It represents the configured transmission power of the UE on the uplink carrier (the maximum transmission power allowed by the uplink carrier), and p0(j) represents the open-loop receiving end power target value, which is related to the target SINR and interference intensity expected by the network side. The larger this target value is, the higher the uplink transmission power is usually, and the higher the receiving end SINR is. PL(q) represents the path loss estimation, q is the index, and one is selected from a set of path loss estimation values ​​maintained by the UE. For the same UE, different reference signals in the same service cell may also experience different path losses. For example, the SSB beam width is wider, the beamforming gain is lower, and the path loss estimate is large; while the CSI-RS beam is narrower, the beamforming gain is high, and the path loss estimate is small. Therefore, the same UE needs to maintain multiple path loss estimation values, and take out a path loss estimation value according to the index configured or indicated by the network side to calculate the transmission power.

[0197] The closed-loop part f(l) represents the lth power control offset (adjustment) state value, which can quickly adjust the transmission power of a certain UE for a certain transmission. The adjustment is based on the effect of the previous transmission. The adjustment information is quickly adjusted through physical layer signaling (for example, DCI) (the relevant parameters are still quasi-statically configured by RRC high-level signaling). This type of adjustment is called closed-loop adjustment. For example, if the base station finds that the UE's transmission power is too high, the base station can use DCI to notify the UE to reduce the transmission power by 1dB when scheduling the next uplink transmission of the same type. The closed-loop power control information carried in the DCI is called TPC, expressed as δ(l).

[0198] Example 3: When the UE performs full-duplex transmission, the UE determines the transmit power of the MsgA PUSCH according to the RO type.

[0199] Among them, RO types include the following three:

[0200] The first type: RO located on a time domain resource whose time domain format is UL;

[0201] The second type: RO located on a time domain resource with a time domain format of X and not containing downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.);

[0202] The third type: an RO located on a time domain resource whose time domain format is X and contains downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.).

[0203] The network side device configures different power offsets corresponding to MsgAPUSCH for the first type, second type and third type of PRACH respectively, where:

[0204] For MsgA PRACH, the first type of RO is adopted, and the corresponding MsgA PUSCH power offset 1=0;

[0205] For MsgA PRACH, the second type of RO is adopted, and the corresponding MsgA PUSCH power offset 2=X2;

[0206] For MsgA PRACH, the third type of RO is adopted, and the corresponding power offset 3 of MsgA PUSCH is Y2.

[0207] When the UE selects to initiate the MsgA PRACH on the RO (i.e., the first type of resource) located on the time domain resource whose time domain format is the first time domain format (i.e., the UL time domain format), when sending the MsgA PUSCH, the transmit power of the MsgA PUSCH is determined according to the following formula:

[0208] P MsgA,PUSCH =min{P CMAX ,P UL_PC,PUSCH}[dBm];

[0209] When the UE selects to initiate MsgA PRACH on an RO (i.e., a third type of resource) located on a time domain resource whose time domain format is the second time domain format (i.e., X time domain format) and contains downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.), when sending MsgA PUSCH, the transmit power of MsgA PUSCH is determined according to the following formula:

[0210] P MsgA,PUSCH =min{P CMAX ,P UL_PC,PUSCH +offset2}[dBm];

[0211] When the UE selects to initiate MsgA PRACH on an RO (i.e., a third type of resource) located on a time domain resource whose time domain format is the second time domain format (i.e., X time domain format) and contains downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.), when sending MsgA PUSCH, the transmit power of MsgAPUSCH is determined according to the following:

[0212] P MsgA,PUSCH =min{P CMAX ,P UL_PC,PUSCH +offset3}[dBm].

[0213] Among them, in the above formulas, P CMA Indicates the maximum transmit power, P UL_PC,PUSCHrepresents the transmission power determined based on uplink power control, offset2 represents the power offset2 corresponding to the second type, offset3 represents the power offset3 corresponding to the third type, and i is an integer greater than or equal to 0.

[0214] Example 4: When the UE performs full-duplex transmission, the UE determines the power boost step size of the Msg1 or MsgA PRACH according to the RO type.

[0215] In this example, when determining the transmit power of PRACH, the power boost step size parameter may be further determined according to the RO resources based on the power parameter determined based on the above examples (ie, Example 1, Example 2 or Example 3).

[0216] Among them, RO types include the following three:

[0217] The first type: RO located on a time domain resource whose time domain format is UL;

[0218] The second type: RO located on a time domain resource with a time domain format of X and not containing downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.);

[0219] The third type: an RO located on a time domain resource whose time domain format is X and contains downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.).

[0220] The network side device configures different power ramping steps for the first type, second type and third type of PRACH, respectively, where:

[0221] The first type corresponds to power ramping step1 = X3;

[0222] The second type corresponds to power ramping step 2 = Y3;

[0223] The third type corresponds to power ramping step 3 = Z.

[0224] After the UE selects to initiate RACH on the RO (i.e., the first type of resource) located on the time domain resource whose time domain format is the first time domain format (i.e., the UL time domain format), the UE needs to re-initiate RACH. When the UE continues to select the first type of RO to send PRACH, the transmit power of PRACH is determined according to the following formula:

[0225] P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PLb,f,c +powerrampingstep1};

[0226] When the UE selects to initiate RACH on an RO (i.e., a second type of resource) located on a time domain resource whose time domain format is the second time domain format (i.e., the X time domain format) and does not contain a downlink common / broadcast signal (SSB / SIB / MIB / Paging, etc.), the UE needs to re-initiate RACH. When the UE continues to select the second type of RO to send PRACH, the transmit power of PRACH is determined according to the following:

[0227] P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c +power ramping step2}

[0228] When the UE selects to initiate RACH on a RO (i.e., type 3) located on a time domain resource with a time domain format of X and containing downlink common / broadcast signals (SSB / SIB / MIB / Paging, etc.), the UE needs to re-initiate RACH. When the UE continues to select RO type 3 to send PRACH, the transmit power of PRACH is determined according to the following:

[0229] P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c +power ramping step3}

[0230] After the UE selects to initiate RACH on a RO (i.e., a first type of resource) located on a time domain resource whose time domain format is the first time domain format (i.e., the UL time domain format), the UE needs to re-initiate RACH. When the UE continues to select the first type of RO to send PRACH, the transmit power of PRACH is increased according to Power ramping step 1. When the UE needs to re-initiate RACH again, and the UE selects the second type of RO to send PRACH, the transmit power of PRACH is determined according to the following formula:

[0231] P PRACH,b,f,c (i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c +power ramping step1+power ramping step2}, in which case the power boosts of different types of RACH can be accumulated; or,

[0232] P PRACH,b,f,c(i) = min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c +power ramping step2},

[0233] In this case, the power boosts of different types of RACH are not accumulated.

[0234] Among them, in the above formulas, P CMAX,f,c Indicates the maximum transmit power, P PRACH,target,f,c Indicates the target received power, PL b,f,c Represents the path loss value, where i is an integer greater than or equal to 0.

[0235] In summary, the power control method provided in the embodiment of the present application can reduce the impact of self-interference when the UE performs full-duplex transmission, thereby ensuring the receiving performance of the downlink transmission.

[0236] See also Figure 4 , Figure 4 is a flow chart of a power control method provided in an embodiment of the present application, which can be executed by a network side device, such as Figure 4 As shown, the following steps are included:

[0237] Step 401: A network-side device sends a first power parameter, wherein the first power control parameter is used to send a first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource.

[0238] Optionally, the resource type is determined based on at least one of the following: a time domain resource where a random access message is located, a relationship between the time domain resource where the random access message is located and a time domain resource where a target signal is located; the target signal includes a downlink public signal or a downlink broadcast signal.

[0239] Optionally, the resource type includes at least one of the following:

[0240] A first type, where the first type is used to represent a random access message sending resource located on a time domain resource whose time domain format is a first time domain format;

[0241] A second type, where the second type is used to indicate a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and does not include a target signal;

[0242] A third type, the third type being used to represent a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and contains a target signal;

[0243] A fourth type, where the fourth type is used to indicate a random access message sending resource located on a target time domain resource, where the time interval between the target time domain resource and a synchronization signal block SSB is greater than a preset value, and the target time domain resource includes a target signal;

[0244] The first time domain format is a time domain format for uplink transmission only, the second time domain format is a time domain format for full-duplex transmission, and the target signal includes a downlink common signal or a downlink broadcast signal.

[0245] Optionally, when the first random access message is a physical random access channel PRACH of Msg1 or MsgA, the power parameter includes at least one of the following: a target received power corresponding to Msg1 or MsgA PRACH, a power offset value corresponding to Msg1 or MsgAPRACH, a power boost parameter corresponding to Msg1 or MsgA PRACH, and a maximum transmit power corresponding to Msg1 or MsgA PRACH;

[0246] or,

[0247] In the case where the first random access message is Msg3, the power parameter includes at least one of the following: a power offset value corresponding to Msg3, a power compensation factor corresponding to Msg3;

[0248] or,

[0249] In the case where the first random access message is a MsgA physical uplink shared channel PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to the MsgA PUSCH, a power compensation factor corresponding to the MsgA PUSCH;

[0250] or,

[0251] In the case where the first random access message is a common physical uplink control channel PUCCH, the power parameter includes at least one of the following: a power offset value corresponding to the common PUCCH, a power compensation factor corresponding to the common PUCCH;

[0252] or,

[0253] In the case where the first random access message is Msg5 PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to Msg5 PUSCH, a power compensation factor corresponding to Msg5 PUSCH, and a target received power corresponding to Msg5 PUSCH;

[0254] or,

[0255] In the case where the first random access message is a sounding reference signal SRS, the power parameter includes at least one of the following: a power offset value corresponding to the SRS, a power compensation factor corresponding to the SRS, and a target received power corresponding to the SRS.

[0256] Optionally, the first random access message includes one of the following: Msg1, Msg3, MsgA, common PUCCH, Msg5, SRS.

[0257] Optionally, the random access message sending resources include at least one of the following: RO resources, Msg3 PUSCH resources, MsgA PUSCH resources, common PUCCH resources, Msg5 PUSCH resources, and SRS resources.

[0258] It should be noted that the implementation method of this embodiment can be found in Figure 3 The relevant description of the illustrated embodiment is not repeated here.

[0259] It should be noted that the power control method provided in the embodiment of the present application can be executed by a power control device, or a control module in the power control device for executing the power control method. In the embodiment of the present application, the power control device provided in the embodiment of the present application is described by taking the power control device executing the power control method as an example.

[0260] See also Figure 5 , Figure 5 is a structural diagram of a power control device provided in an embodiment of the present application, such as Figure 5 As shown, the power control device 500 includes:

[0261] A determination module 501, configured to determine a transmit power of a first random access message according to random access related information when the terminal operates in full-duplex mode;

[0262] Among them, the random access related information includes at least one of the following: the resource type of the first sending resource, the resource location related information of the first sending resource; the first sending resource is the sending resource of the target random access message, and the target random access message includes at least one of the first random access message and the second random access message.

[0263] Optionally, the resource type of the first sending resource is determined based on at least one of the following: the time domain format of the time domain resources where the target random access message is located, the relationship between the time domain resources where the target random access message is located and the time domain resources where the target signal is located; the target signal includes a downlink common signal or a downlink broadcast signal.

[0264] Optionally, the resource type includes at least one of the following:

[0265] A first type, where the first type is used to represent a random access message sending resource located on a time domain resource whose time domain format is a first time domain format;

[0266] A second type, where the second type is used to indicate a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and does not include a target signal;

[0267] A third type, the third type being used to represent a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and contains a target signal;

[0268] A fourth type, wherein the fourth type is used to represent a random access message sending resource located on a target time domain resource, wherein the time interval between the target time domain resource and a synchronization signal block SSB is greater than or equal to a preset value, and the target time domain resource includes a target signal;

[0269] The first time domain format is a time domain format for uplink transmission only, the second time domain format is a time domain format for full-duplex transmission, and the target signal includes a downlink common signal or a downlink broadcast signal.

[0270] Optionally, the resource location related information of the first sending resource includes at least one of time domain location related information and frequency domain location related information of the first sending resource.

[0271] Optionally, the information related to the frequency domain position of the first sending resource includes at least one of the following: the position of the frequency domain resource of the first sending resource, and the frequency domain interval between the frequency domain resource of the first sending resource and a downlink transmission resource.

[0272] Optionally, the downlink transmission resource includes at least one of the following:

[0273] Downlink subband, frequency domain resources of downlink public signals, frequency domain resources of downlink broadcast signals.

[0274] Optionally, the first sending resource is located on a time domain resource whose time domain format is a second time domain format, and the second time domain format is a time domain format for full-duplex transmission.

[0275] Optionally, the device further comprises:

[0276] A receiving module, configured to receive a first power parameter, wherein the first power parameter is used to send the first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource;

[0277] The determining module is specifically configured to determine the transmit power of the first random access message according to the random access related information and the first power parameter.

[0278] Optionally, when the first random access message is a physical random access channel PRACH of Msg1 or MsgA, the power parameter includes at least one of the following: a target received power corresponding to Msg1 or MsgA PRACH, a power offset value corresponding to Msg1 or MsgAPRACH, a power boost parameter corresponding to Msg1 or MsgA PRACH, and a maximum transmit power corresponding to Msg1 or MsgA PRACH;

[0279] or,

[0280] In the case where the first random access message is Msg3, the power parameter includes at least one of the following: a power offset value corresponding to Msg3, a power compensation factor corresponding to Msg3;

[0281] or,

[0282] In the case where the first random access message is a MsgA physical uplink shared channel PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to the MsgA PUSCH, a power compensation factor corresponding to the MsgA PUSCH;

[0283] or,

[0284] In the case where the first random access message is a common physical uplink control channel PUCCH, the power parameter includes at least one of the following: a power offset value corresponding to the common PUCCH, a power compensation factor corresponding to the common PUCCH;

[0285] or,

[0286] In the case where the first random access message is Msg5 PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to Msg5 PUSCH, a power compensation factor corresponding to Msg5 PUSCH, and a target received power corresponding to Msg5 PUSCH;

[0287] or,

[0288] In the case where the first random access message is a sounding reference signal SRS, the power parameter includes at least one of the following: a power offset value corresponding to the SRS, a power compensation factor corresponding to the SRS, and a target received power corresponding to the SRS.

[0289] Optionally, the first random access message includes one of the following: Msg1, Msg3, MsgA, common PUCCH, Msg5, SRS.

[0290] Optionally, the first sending resource includes at least one of the following: RO resources, Msg3 PUSCH resources, MsgAPUSCH resources, common PUCCH resources, Msg5 PUSCH resources, and SRS resources.

[0291] The power control device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or it can be other devices other than a terminal. Exemplarily, the terminal can include but is not limited to the types of terminals 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0292] The power control device provided in the embodiment of the present application can achieve Figure 3 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0293] See also Figure 6 , Figure 6 is a structural diagram of a power control device provided in an embodiment of the present application, such as Figure 6 As shown, the power control device 600 includes:

[0294] The sending module 601 is used to send a first power parameter, wherein the first power control parameter is used to send a first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource.

[0295] Optionally, the resource type is determined based on at least one of the following: a time domain resource where a random access message is located, a relationship between the time domain resource where the random access message is located and a time domain resource where a target signal is located; the target signal includes a downlink public signal or a downlink broadcast signal.

[0296] Optionally, the resource type includes at least one of the following:

[0297] A first type, where the first type is used to represent a random access message sending resource located on a time domain resource whose time domain format is a first time domain format;

[0298] A second type, where the second type is used to indicate a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and does not include a target signal;

[0299] A third type, the third type being used to represent a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and contains a target signal;

[0300] A fourth type, where the fourth type is used to indicate a random access message sending resource located on a target time domain resource, where the time interval between the target time domain resource and a synchronization signal block SSB is greater than a preset value, and the target time domain resource includes a target signal;

[0301] The first time domain format is a time domain format for uplink transmission only, the second time domain format is a time domain format for full-duplex transmission, and the target signal includes a downlink common signal or a downlink broadcast signal.

[0302] Optionally, when the first random access message is a physical random access channel PRACH of Msg1 or MsgA, the power parameter includes at least one of the following: a target received power corresponding to Msg1 or MsgA PRACH, a power offset value corresponding to Msg1 or MsgAPRACH, a power boost parameter corresponding to Msg1 or MsgA PRACH, and a maximum transmit power corresponding to Msg1 or MsgA PRACH;

[0303] or,

[0304] In the case where the first random access message is Msg3, the power parameter includes at least one of the following: a power offset value corresponding to Msg3, a power compensation factor corresponding to Msg3;

[0305] or,

[0306] In the case where the first random access message is a MsgA physical uplink shared channel PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to the MsgA PUSCH, a power compensation factor corresponding to the MsgA PUSCH;

[0307] or,

[0308] In the case where the first random access message is a common physical uplink control channel PUCCH, the power parameter includes at least one of the following: a power offset value corresponding to the common PUCCH, a power compensation factor corresponding to the common PUCCH;

[0309] or,

[0310] In the case where the first random access message is Msg5 PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to Msg5 PUSCH, a power compensation factor corresponding to Msg5 PUSCH, and a target received power corresponding to Msg5 PUSCH;

[0311] or,

[0312] In the case where the first random access message is a sounding reference signal SRS, the power parameter includes at least one of the following: a power offset value corresponding to the SRS, a power compensation factor corresponding to the SRS, and a target received power corresponding to the SRS.

[0313] Optionally, the first random access message includes one of the following: Msg1, Msg3, MsgA, common PUCCH, Msg5, SRS.

[0314] Optionally, the random access message sending resources include at least one of the following: RO resources, Msg3 PUSCH resources, MsgA PUSCH resources, common PUCCH resources, Msg5 PUSCH resources, and SRS resources.

[0315] The power control device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a network side device, or may be other devices other than the network side device. Exemplarily, the network side device may include but is not limited to the types of network side devices 12 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0316] The power control device provided in the embodiment of the present application can achieve Figure 4 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0317] Optional, such as Figure 7 As shown, the embodiment of the present application further provides a communication device 700, including a processor 701 and a memory 702, and the memory 702 stores a program or instruction that can be run on the processor 701. For example, when the communication device 700 is a terminal, the program or instruction is executed by the processor 701 to implement the various steps of the above-mentioned power control method embodiment, and can achieve the same technical effect. When the communication device 700 is a network side device, the program or instruction is executed by the processor 701 to implement the various steps of the above-mentioned power control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0318] An embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the processor is used to determine the transmission power of a first random access message based on random access related information when the terminal operates in full-duplex mode; wherein the random access related information includes at least one of the following: a resource type of a first transmission resource, and information related to a resource location of the first transmission resource; the first transmission resource is a transmission resource of a target random access message, and the target random access message includes at least one of the first random access message and a second random access message. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, Figure 8 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0319] The terminal 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809 and at least some of the components of a processor 810.

[0320] Those skilled in the art will appreciate that the terminal 800 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 810 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Figure 8 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0321] It should be understood that in the embodiment of the present application, the input unit 804 may include a graphics processing unit (GPU) 8041 and a microphone 8042, and the graphics processor 8041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 807 includes a touch panel 8071 and at least one of other input devices 8072. The touch panel 8071 is also called a touch screen. The touch panel 8071 may include two parts: a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0322] In the embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 801 can transmit the data to the processor 810 for processing; in addition, the radio frequency unit 801 can send uplink data to the network side device. Generally, the radio frequency unit 801 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0323] The memory 809 can be used to store software programs or instructions and various data. The memory 809 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 809 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 809 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0324] The processor 810 may include one or more processing units; optionally, the processor 810 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 810.

[0325] Among them, the processor 810 is used to determine the transmission power of the first random access message according to the random access related information when the terminal operates in full-duplex mode; wherein the random access related information includes at least one of the following: the resource type of the first sending resource, and the resource location related information of the first sending resource; the first sending resource is the sending resource of the target random access message, and the target random access message includes at least one of the first random access message and the second random access message.

[0326] Optionally, the resource type of the first sending resource is determined based on at least one of the following: the time domain format of the time domain resources where the target random access message is located, the relationship between the time domain resources where the target random access message is located and the time domain resources where the target signal is located; the target signal includes a downlink common signal or a downlink broadcast signal.

[0327] Optionally, the resource type includes at least one of the following:

[0328] A first type, where the first type is used to represent a random access message sending resource located on a time domain resource whose time domain format is a first time domain format;

[0329] A second type, where the second type is used to indicate a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and does not include a target signal;

[0330] A third type, the third type being used to represent a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and contains a target signal;

[0331] A fourth type, wherein the fourth type is used to represent a random access message sending resource located on a target time domain resource, wherein the time interval between the target time domain resource and a synchronization signal block SSB is greater than or equal to a preset value, and the target time domain resource includes a target signal;

[0332] The first time domain format is a time domain format for uplink transmission only, the second time domain format is a time domain format for full-duplex transmission, and the target signal includes a downlink common signal or a downlink broadcast signal.

[0333] Optionally, the resource location related information of the first sending resource includes at least one of time domain location related information and frequency domain location related information of the first sending resource.

[0334] Optionally, the information related to the frequency domain position of the first sending resource includes at least one of the following: the position of the frequency domain resource of the first sending resource, and the frequency domain interval between the frequency domain resource of the first sending resource and a downlink transmission resource.

[0335] Optionally, the downlink transmission resource includes at least one of the following:

[0336] Downlink subband, frequency domain resources of downlink public signals, frequency domain resources of downlink broadcast signals.

[0337] Optionally, the first sending resource is located on a time domain resource whose time domain format is a second time domain format, and the second time domain format is a time domain format for full-duplex transmission.

[0338] Optionally, the radio frequency unit 801 is configured to receive a first power parameter, wherein the first power control parameter is used to send the first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource;

[0339] The terminal determines, according to random access related information, a transmit power of a first random access message, including:

[0340] The terminal determines the transmission power of the first random access message according to the random access related information and the first power parameter.

[0341] Optionally, when the first random access message is a physical random access channel PRACH of Msg1 or MsgA, the power parameter includes at least one of the following: a target received power corresponding to Msg1 or MsgA PRACH, a power offset value corresponding to Msg1 or MsgAPRACH, a power boost parameter corresponding to Msg1 or MsgA PRACH, and a maximum transmit power corresponding to Msg1 or MsgA PRACH;

[0342] or,

[0343] In the case where the first random access message is Msg3, the power parameter includes at least one of the following: a power offset value corresponding to Msg3, a power compensation factor corresponding to Msg3;

[0344] or,

[0345] In the case where the first random access message is a MsgA physical uplink shared channel PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to the MsgA PUSCH, a power compensation factor corresponding to the MsgA PUSCH;

[0346] or,

[0347] In the case where the first random access message is a common physical uplink control channel PUCCH, the power parameter includes at least one of the following: a power offset value corresponding to the common PUCCH, a power compensation factor corresponding to the common PUCCH;

[0348] or,

[0349] In the case where the first random access message is Msg5 PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to Msg5 PUSCH, a power compensation factor corresponding to Msg5 PUSCH, and a target received power corresponding to Msg5 PUSCH;

[0350] or,

[0351] In the case where the first random access message is a sounding reference signal SRS, the power parameter includes at least one of the following: a power offset value corresponding to the SRS, a power compensation factor corresponding to the SRS, and a target received power corresponding to the SRS.

[0352] Optionally, the first random access message includes one of the following: Msg1, Msg3, MsgA, common PUCCH, Msg5, SRS.

[0353] Optionally, the first sending resource includes at least one of the following: RO resources, Msg3 PUSCH resources, MsgAPUSCH resources, common PUCCH resources, Msg5 PUSCH resources, and SRS resources.

[0354] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the aforementioned method embodiment, and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

[0355] The embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is used to send a first power parameter, wherein the first power control parameter is used to send a first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource. The network side device embodiment corresponds to the above-mentioned network side device method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the network side device embodiment, and can achieve the same technical effect.

[0356] Specifically, the embodiment of the present application also provides a network side device. Fig. 9As shown, the network side device 900 includes: an antenna 901, a radio frequency device 902, a baseband device 903, a processor 904 and a memory 905. The antenna 901 is connected to the radio frequency device 902. In the uplink direction, the radio frequency device 902 receives information through the antenna 901 and sends the received information to the baseband device 903 for processing. In the downlink direction, the baseband device 903 processes the information to be sent and sends it to the radio frequency device 902. The radio frequency device 902 processes the received information and sends it out through the antenna 901.

[0357] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 903, which includes a baseband processor.

[0358] The baseband device 903 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig. 9 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 905 through a bus interface to call the program in the memory 905 to execute the network device operations shown in the above method embodiment.

[0359] The network side device may further include a network interface 906, which is, for example, a Common Public Radio Interface (CPRI).

[0360] Specifically, the network side device 900 of the embodiment of the present application further includes: an instruction or program stored in the memory 905 and executable on the processor 904, and the processor 904 calls the instruction or program in the memory 905 to execute Figure 6 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0361] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned power control method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0362] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0363] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned power control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0364] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0365] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned power control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0366] The present application also provides a power control system, including: a terminal and a network side device, wherein the terminal is used to execute the following Figure 3 And each process of each method embodiment above, the network side device is used to perform the following Figure 4 And the various processes of the above-mentioned method embodiments can achieve the same technical effect. To avoid repetition, they will not be described here.

[0367] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0368] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0369] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A power control method, characterized in that: include: When the terminal operates in full-duplex mode, the terminal determines the transmit power of the first random access message according to the random access related information; Among them, the random access related information includes at least one of the following: the resource type of the first sending resource, the resource location related information of the first sending resource; the first sending resource is the sending resource of the target random access message, and the target random access message includes at least one of the first random access message and the second random access message.

2. The method according to claim 1, characterized in that The resource type of the first sending resource is determined according to at least one of the following: the time domain format of the time domain resource where the target random access message is located, the relationship between the time domain resource where the target random access message is located and the time domain resource where the target signal is located; the target signal includes a downlink common signal or a downlink broadcast signal.

3. The method according to claim 1 or 2, characterized in that: The resource type includes at least one of the following: A first type, where the first type is used to represent a random access message sending resource located on a time domain resource whose time domain format is a first time domain format; A second type, where the second type is used to indicate a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and does not include a target signal; A third type, the third type being used to represent a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and contains a target signal; A fourth type, where the fourth type is used to represent a random access message sending resource located on a target time domain resource, where the time interval between the target time domain resource and a synchronization signal block SSB is greater than or equal to a preset value, and the target time domain resource includes a target signal; The first time domain format is a time domain format for uplink transmission only, the second time domain format is a time domain format for full-duplex transmission, and the target signal includes a downlink common signal or a downlink broadcast signal.

4. The method according to any one of claims 1 to 3, characterized in that The resource location related information of the first sending resource includes at least one of time domain location related information and frequency domain location related information of the first sending resource.

5. The method according to claim 4, characterized in that The information related to the frequency domain position of the first sending resource includes at least one of the following: the position of the frequency domain resource of the first sending resource, and the frequency domain interval between the frequency domain resource of the first sending resource and a downlink transmission resource.

6. The method according to claim 5, characterized in that The downlink transmission resource includes at least one of the following: Downlink subband, frequency domain resources of downlink public signals, frequency domain resources of downlink broadcast signals.

7. The method according to claim 5 or 6, characterized in that: The first sending resource is located on a time domain resource whose time domain format is a second time domain format, and the second time domain format is a time domain format for full-duplex transmission.

8. The method according to any one of claims 1 to 7, characterized in that The method further comprises: The terminal receives a first power parameter, wherein the first power control parameter is used to send the first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource; The terminal determines, according to random access related information, a transmit power of a first random access message, including: The terminal determines the transmission power of the first random access message according to the random access related information and the first power parameter.

9. The method according to claim 8, characterized in that In the case where the first random access message is a physical random access channel PRACH of Msg1 or MsgA, the power parameter includes at least one of the following: a target received power corresponding to Msg1 or MsgA PRACH, a power offset value corresponding to Msg1 or MsgA PRACH, a power boost parameter corresponding to Msg1 or MsgA PRACH, and a maximum transmit power corresponding to Msg1 or MsgA PRACH; or, In the case where the first random access message is Msg3, the power parameter includes at least one of the following: a power offset value corresponding to Msg3, a power compensation factor corresponding to Msg3; or, In the case where the first random access message is MsgA Physical Uplink Shared Channel PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to MsgA PUSCH, a power compensation factor corresponding to MsgA PUSCH; or, In the case where the first random access message is a common physical uplink control channel PUCCH, the power parameter includes at least one of the following: a power offset value corresponding to the common PUCCH, a power compensation factor corresponding to the common PUCCH; or, In the case where the first random access message is Msg5 PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to Msg5 PUSCH, a power compensation factor corresponding to Msg5 PUSCH, and a target received power corresponding to Msg5 PUSCH; or, In the case where the first random access message is a sounding reference signal SRS, the power parameter includes at least one of the following: a power offset value corresponding to the SRS, a power compensation factor corresponding to the SRS, and a target received power corresponding to the SRS.

10. The method according to any one of claims 1 to 9, characterized in that The first random access message includes one of the following: Msg1, Msg3, MsgA, common PUCCH, Msg5, SRS.

11. The method according to any one of claims 1 to 10, characterized in that The first sending resource includes at least one of the following: RO resource, Msg3 PUSCH resource, MsgA PUSCH resource, common PUCCH resource, Msg5 PUSCH resource, SRS resource.

12. A power control configuration method, characterized in that: include: The network side device sends a first power parameter, wherein the first power control parameter is used to send a first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource.

13. The method according to claim 12, characterized in that The resource type is determined according to at least one of the following: the time domain resource where the random access message is located, the relationship between the time domain resource where the random access message is located and the time domain resource where the target signal is located; the target signal includes a downlink public signal or a downlink broadcast signal.

14. The method according to claim 12 or 13, characterized in that The resource type includes at least one of the following: A first type, where the first type is used to represent a random access message sending resource located on a time domain resource whose time domain format is a first time domain format; A second type, where the second type is used to indicate a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and does not include a target signal; A third type, the third type being used to represent a random access message sending resource located on a time domain resource whose time domain format is a second time domain format and contains a target signal; A fourth type, where the fourth type is used to indicate a random access message sending resource located on a target time domain resource, where the time interval between the target time domain resource and a synchronization signal block SSB is greater than a preset value, and the target time domain resource includes a target signal; The first time domain format is a time domain format for uplink transmission only, the second time domain format is a time domain format for full-duplex transmission, and the target signal includes a downlink common signal or a downlink broadcast signal.

15. The method according to any one of claims 12 to 14, characterized in that In the case where the first random access message is Msg1 or MsgA physical random access channel PRACH, the power parameter includes at least one of the following: a target received power corresponding to Msg1 or MsgA PRACH, a power offset value corresponding to Msg1 or MsgA PRACH, a power boost parameter corresponding to Msg1 or MsgAPRACH, and a maximum transmit power corresponding to Msg1 or MsgA PRACH; or, In the case where the first random access message is Msg3, the power parameter includes at least one of the following: a power offset value corresponding to Msg3, a power compensation factor corresponding to Msg3; or, In the case where the first random access message is a MsgA physical uplink shared channel PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to the MsgA PUSCH, a power compensation factor corresponding to the MsgA PUSCH; or, In the case where the first random access message is a common physical uplink control channel PUCCH, the power parameter includes at least one of the following: a power offset value corresponding to the common PUCCH, a power compensation factor corresponding to the common PUCCH; or, In the case where the first random access message is Msg5 PUSCH, the power parameter includes at least one of the following: a power offset value corresponding to Msg5 PUSCH, a power compensation factor corresponding to Msg5 PUSCH, and a target received power corresponding to Msg5 PUSCH; or, In the case where the first random access message is a sounding reference signal SRS, the power parameter includes at least one of the following: a power offset value corresponding to the SRS, a power compensation factor corresponding to the SRS, and a target received power corresponding to the SRS.

16. The method according to any one of claims 12 to 15, characterized in that The first random access message includes one of the following: Msg1, Msg3, MsgA, common PUCCH, Msg5, SRS.

17. The method according to any one of claims 12 to 16, characterized in that The random access message sending resource includes at least one of the following: RO resource, Msg3 PUSCH resource, MsgA PUSCH resource, common PUCCH resource, Msg5 PUSCH resource, SRS resource.

18. A power control device, characterized in that: include: A determination module, configured to determine, when the terminal operates in full-duplex mode, a transmit power of the first random access message according to random access related information; Among them, the random access related information includes at least one of the following: the resource type of the first sending resource, the resource location related information of the first sending resource; the first sending resource is the sending resource of the target random access message, and the target random access message includes at least one of the first random access message and the second random access message.

19. A power control configuration device, characterized in that: include: A sending module is used to send a first power parameter, wherein the first power control parameter is used to send a first random access message, and the first power parameter includes a power parameter corresponding to at least one resource type, and the resource type is a resource type of a random access message sending resource.

20. A terminal, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the power control method according to any one of claims 1 to 11 are implemented.

21. A network side device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the power control method according to any one of claims 12 to 17 are implemented.

22. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the power control method according to any one of claims 1 to 11 are implemented, or the steps of the power control method according to any one of claims 12 to 17 are implemented.

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