Communication method and related device

Abstract

Embodiments of the present application provide a communication method and a related device, the method being applied to a terminal device having dual power amplifiers and dual local oscillators, the method comprising: determining a first maximum power rollback (MPR) according to a first transmission resource, the first transmission resource being a transmission resource corresponding to a first component carrier (CC); determining a first transmitting power according to the first MPR; according to the first transmitting power, sending a first signal carried by the first CC on a first transmission resource; according to a second transmission resource, determining a second MPR, the second transmission resource being a transmission resource corresponding to a second CC; determining a second transmitting power according to the second MPR; and sending a second signal carried by the second CC on a second transmission resource according to the second transmitting power. And the opportunity of obtaining the power gain by the signals carried by different component carriers is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to a communication method and related apparatus. BACKGROUND

[0002] With the development of communication technology, carrier aggregation (CA) is a common communication technology means. A terminal device supporting carrier aggregation can simultaneously receive or transmit multiple carriers, and data transmission can be performed on the multiple carriers, so that the transmission rate of data is improved. In carrier aggregation, component carriers (CCs) are divided into primary carrier components (PCCs) and secondary carrier components (SCCs), wherein the PCC is a primary cell related carrier, and the SCC is a secondary cell related carrier. The primary cell refers to a cell operating in a primary frequency band, and the secondary cell refers to a cell operating in a secondary frequency band. In the uplink carrier (UL CA) scenario of the terminal device, the number of carriers usually supported is 2, that is, the terminal device supports transmission of two CCs in the uplink CA scenario.

[0003] In a wireless communication network, the transmit power of a terminal device is a key factor affecting the terminal device to send data to a network device. The transmit power of the terminal device mainly depends on the power amplifier (PA). The role of the PA is to convert a low-power signal into a high-power signal, so as to overcome the signal attenuation between the terminal device and the network device, and ensure that the network device can receive a signal of sufficient strength. The transmit power directly affects the communication quality. For example, when the transmit power of the terminal device is low, it may cause unstable communication. In the process of power amplification of the PA on the signal, the PA needs to perform power amplification according to the oscillation signal generated by the local oscillator (LO). Therefore, in the terminal device, the above radio frequency (RF) architecture can also be referred to as a PA-LO architecture.

[0004] Currently, common RF architectures in terminal devices include single PA and single LO (single PA and single LO) or dual PA and dual LO (dual PA and dual LO), wherein the single PA and single LO architecture refers to one PA transmitting two CCs, and the dual PA and dual LO architecture refers to each PA independently transmitting one CC, and two PAs transmitting two CCs respectively. The current protocol defines a capability description of the above RF architecture of a terminal device: for a single-band band combination with UL CA, this field indicates that dual PA and dual LO frequencies are supported for FR1, or dual LO frequencies are supported for FR2. If not present in such band combinations, the UE supports single PA and single LO frequencies for all ULs for FR1, or single LO frequencies for all ULs for FR2. For other band combinations, this field is not applicable. "For band combinations with single-band with UL CA, this field indicates the support of dual PA and dual LO frequencies for FR1, or dual LO fequencies for FR2. if absent in such band combinations, the UEsupports single PA and single LO frequency for all the ULs for FR1, or singleLO fequency for all the ULs for FR2. For other band combinations, this field is notapplicable."

[0005] The transmit power of a terminal device is mainly limited by the uplink radio frequency index, which is to ensure that the signal quality of the transmit signal of the terminal device and the interference generated by the transmit signal to other devices are at a reasonable level. With the development of communication technology, it is necessary for the terminal device to flexibly adjust the transmit power. In the process of determining the transmit power, the terminal device needs to first determine the maximum power reduction (MPR), and then determine the transmit power according to the MPR. Therefore, for a terminal device with a dual PA and dual LO architecture, how to determine the MPR becomes a problem to be solved. SUMMARY

[0006] The embodiment of the present application provides a communication method and related device, and the terminal device can independently determine the maximum power backoff of each component carrier corresponding transmission resource. Therefore, the terminal device can determine the transmission power of the signals carried by each component carrier based on the independent maximum power backoff, and the opportunity of power gain of the signals carried by different component carriers is improved.

[0007] In a first aspect, the embodiment of the present application provides a communication method, and the method is applied to a terminal device. For example, the method is executed by the terminal device itself, and the terminal device can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, a chip system, a module, a control unit, a circuit or a processor in the foregoing device or apparatus, and the present application is not limited in particular.

[0008] The method comprises the following steps: determining a first maximum power backoff (MPR) according to a first transmission resource, the first transmission resource is a transmission resource corresponding to a first component carrier (CC), the first transmission resource comprises one or more resource blocks (RBs), and the first MPR is used to indicate a power backoff value of a first signal carried by the first CC; and determining a second MPR according to a second transmission resource, the second transmission resource is a transmission resource corresponding to a second CC, the second transmission resource comprises one or more RBs, and the second MPR is used to indicate a power backoff value of a second signal carried by the second CC.

[0009] In an example, the frequency of the first CC is lower than the frequency of the second CC.

[0010] In an example, the first CC is continuous with the second CC in the frequency domain. For example, the first CC and the second CC are in the same frequency band, the first CC and the second CC are continuous in the frequency domain, the first CC and the second CC belong to the same carrier aggregation (CA), and the first CC and the second CC belong to the same carrier aggregation (CA).

[0011] In another example, the first CC is discontinuous with the second CC in the frequency domain. For example, the first CC and the second CC are in the same frequency band, the first CC and the second CC are discontinuous in the frequency domain, the first CC and the second CC belong to the same carrier aggregation (CA), the first CC and the second CC belong to the same carrier aggregation (CA), and the first CC and the second CC belong to different frequency bands.

[0012] In another example, the first MPR is different from the second MPR.

[0013] In the technical solution, for two independent component carriers, the terminal device can independently determine the maximum power backoff of the transmission resource corresponding to each component carrier according to the transmission resource, so that the terminal device can determine the transmission power of the signal carried by each component carrier based on the independent maximum power backoff, and the signals carried by different component carriers can use different transmission powers, thereby improving the opportunity for the signals carried by different component carriers to obtain power gain.

[0014] With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes: determining the first transmission power according to the first MPR; transmitting the first signal carried by the first CC on the first transmission resource according to the first transmission power; determining the second transmission power according to the second MPR; and transmitting the second signal carried by the second CC on the second transmission resource according to the second transmission power.

[0015] In an example, the first CC is transmitted by a first power amplifier (PA) and a first local oscillator (LO);

[0016] The second CC is transmitted by a second PA and a second LO, the second PA is independent of the first PA, and the second LO is independent of the first LO.

[0017] In the technical solution, since the first MPR corresponding to the first transmission resource and the second MPR corresponding to the second transmission resource are independent of each other, the first MPR and the second MPR are different, and the first transmission power and the second transmission power are different, thereby flexibly adapting to different service requirements. Compared with the current MPR determination manner, the terminal device has a greater probability of determining the transmission mode as internal RB allocation on different component carriers, and thus has a greater probability of determining a lower MPR, thereby improving the opportunity for the terminal device to obtain power gain.

[0018] With reference to the first aspect, in a possible implementation manner of the first aspect, the first MPR is determined according to the first transmission resource, including: determining the first transmission mode corresponding to the first transmission resource according to the first transmission resource and the first CC; and determining the first MPR according to the first transmission mode corresponding to the first transmission resource.

[0019] In the embodiments of the present application, the transmission modes can include inner RB allocations, outer RB allocations, or edge RB allocations. For ease of distinction, the first transmission mode includes a first inner RB allocation, a first outer RB allocation, or a first edge RB allocation. Since different transmission modes correspond to different MPRs, after determining the first transmission mode, the corresponding first MPR can be determined. For example, if the first transmission mode is determined to be a first inner RB allocation, the first MPR is determined according to the first inner RB allocation. For another example, if the first transmission mode is determined to be a first outer RB allocation, the first MPR is determined according to the first outer RB allocation. For yet another example, if the first transmission mode is determined to be a first edge RB allocation, the first MPR is determined according to the first edge RB allocation.

[0020] With reference to the first aspect, in a possible implementation form of the first aspect, the first transmission mode corresponding to the first transmission resource is determined according to the first transmission resource and the first CC, including: determining the first transmission mode according to the first number of continuous RBs, the first maximum number of RBs, the first starting RB index, and / or the first rule, wherein the first number of continuous RBs is a number of continuously allocated RBs of the first transmission resource, the first maximum number of RBs is a maximum number of RBs carried by the first CC, the first starting RB index is an index of a starting RB of the first transmission resource, and the first rule includes a first boundary value and a second boundary value, the first boundary value being determined according to the first number of continuous RBs, and the second boundary value being determined according to the first number of continuous RBs and the first maximum number of RBs.

[0021] With reference to the first aspect, in a possible implementation form of the first aspect, the first rule includes at least one of the following conditions:

[0022] Condition 1: the first starting RB index is greater than or equal to the first boundary value, or the first starting RB index is less than or equal to the second boundary value, the first boundary value being a 1 / 2 integer of the first number of continuous RBs, the second boundary value being a difference between the first maximum number of RBs and the first number of continuous RBs, and the first number of continuous RBs being less than or equal to 2 / 3 times the first maximum number of RBs, and the first maximum number of RBs being an integer;

[0023] Condition 2: the starting RB of the first transmission resource belongs to the first RB carried by the first CC or the second RB carried by the first CC (for example, the first RB carried by the first CC is RB0, and the second RB carried by the first CC is RB1);

[0024] When the condition 1 is met, the first transmission mode is determined to be the first inner RB allocation;

[0025] When condition 2 is satisfied, the first transmission mode is determined as the first boundary RB allocation;

[0026] When condition 1 and condition 2 are not satisfied, the first transmission mode is determined as the first outer RB allocation.

[0027] With reference to the first aspect, in a possible implementation manner of the first aspect, condition 1 is satisfied when:

[0028] RB start,low,1 ≤RB start,1 ≤RB start,high,1 ,

[0029]

[0030] RB start,high,1 =N RB,1 -L CRB,1 ,

[0031]

[0032] wherein the first boundary value is RB start,low,1 , the second boundary value is RB start,high,1 , the first start RB index is RB start,1 , the first maximum RB number is N RB,1 , and the first continuous RB number is L CRB,1 .

[0033] With reference to the first aspect, in a possible implementation manner of the first aspect, the second MPR is determined according to the second transmission resource, including: determining a second transmission mode corresponding to the second transmission resource according to the second transmission resource and the second CC; and determining the second MPR according to the second transmission mode corresponding to the second transmission resource.

[0034] The second transmission mode includes: a second inner RB allocation, a second outer RB allocation, or a second edge RB allocation.

[0035] With reference to the first aspect, in a possible implementation manner of the first aspect, the second transmission mode corresponding to the second transmission resource is determined according to the second transmission resource and the second CC, including:

[0036] The second transmission mode is determined according to the second continuous RB number, the second maximum RB number, the second start RB index, and / or a second rule, wherein:

[0037] The second continuous RB number is a continuous allocation RB number of the second transmission resource,

[0038] The second maximum RB number is a maximum RB number carried by the second CC,

[0039] The second start RB index is an index of a start RB of the second transmission resource,

[0040] The second rule includes a third boundary value and a fourth boundary value,

[0041] The third boundary value is determined according to the second continuous RB number,

[0042] The fourth boundary value is determined according to the second continuous RB number and the second maximum RB number.

[0043] With reference to the first aspect, in a possible implementation manner of the first aspect, the second rule includes at least one of the following conditions:

[0044] Condition 3: The second start RB index is greater than or equal to the third boundary value, or the second start RB index is less than or equal to the fourth boundary value, the third boundary value is equal to 0, the fourth boundary value is equal to the second maximum RB number minus the second continuous RB number minus 1 / 2 of the second continuous RB number, and the second continuous RB number is less than or equal to 2 / 3 of the second maximum RB number up to the nearest whole number;

[0045] Condition 4: A sum of the second start RB index and the second continuous RB number is greater than or equal to a difference of the second maximum RB number minus 2;

[0046] When the condition 3 is met, the second transmission mode is determined as the second internal RB allocation;

[0047] When the condition 4 is met, the second transmission mode is determined as the second boundary RB allocation;

[0048] When the conditions 3 and 4 are not met, the second transmission mode is determined as the second external RB allocation.

[0049] With reference to the first aspect, in a possible implementation manner of the first aspect, the condition 3 is met as follows:

[0050] RB start,low,2 ≤RB start,2 ≤RB start,high,2 ,

[0051] RB start,low,2 = 0,

[0052]

[0053] wherein the third boundary value is RB start,low,2 , the fourth boundary value is RB start,high,2 , the second start RB index is RB start,2 , the second maximum RB number is N RB,2 , and the second continuous RB number is L CRB,2 .

[0054] In a second aspect, the second aspect provides a communication apparatus, which is a terminal device. The apparatus includes a transceiver module and a processing module. In the second aspect, the constituent modules of the communication apparatus can also be used to perform the steps performed in the possible implementation manners of the first aspect and achieve the corresponding technical effects. For details, refer to the first aspect, which will not be described here.

[0055] In a third aspect, the third aspect provides a communication apparatus, which includes at least one processor coupled with a memory. The memory is configured to store programs or instructions. The at least one processor is configured to execute the programs or instructions to enable the apparatus to implement the method in any of the possible implementation manners of the first aspect. Optionally, the communication apparatus can include the memory.

[0056] In a fourth aspect, the fourth aspect provides a communication apparatus, which includes at least one logic circuit and an input / output interface. The logic circuit is configured to execute the method in any of the possible implementation manners of the first aspect.

[0057] In a fifth aspect, the fifth aspect provides a communication system, which includes the terminal device.

[0058] In a sixth aspect, the sixth aspect provides a computer-readable storage medium, which is configured to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method in any of the possible implementation manners of the first aspect.

[0059] In a seventh aspect, the seventh aspect provides a computer program product (or computer program). When a computer program in the computer program product is executed by a processor, the processor executes the method in any of the possible implementation manners of the first aspect.

[0060] In an eighth aspect, the eighth aspect provides a chip or chip system, which includes at least one processor configured to support a communication apparatus to implement the method in any of the possible implementation manners of the first aspect. For example, the chip can be a baseband chip, a modem chip, a system on chip (SoC) chip containing a modem core, a system in package (SIP) chip, or a communication module, etc.

[0061] In one possible design, the chip or chip system can further include a memory for storing program instructions and data necessary for the communication device. The chip system can be composed of a chip or include a chip and other discrete devices. Optionally, the chip system further includes an interface circuit that provides program instructions and / or data for the at least one processor.

[0062] The technical effects brought by any of the designs of the second aspect to the eighth aspect can be referred to the technical effects brought by the different designs of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0063] Figure 1 A diagram of a single carrier structure;

[0064] Figure 2a A diagram of in-band carrier aggregation;

[0065] Figure 2b Another diagram of in-band carrier aggregation;

[0066] Figure 2c A diagram of inter-band carrier aggregation;

[0067] Figure 3a A diagram of RB allocation in a single carrier scenario;

[0068] Figure 3b A diagram of RB allocation in a contiguous allocation scenario of carrier aggregation;

[0069] Figure 3c A diagram of RB allocation in a non-contiguous allocation scenario of carrier aggregation;

[0070] Figure 4a A diagram of a single PA single LO architecture;

[0071] Figure 4b A diagram of a dual PA dual LO architecture;

[0072] Figure 5 A diagram of an architecture of a communication system 1000 to which embodiments of the present disclosure can be applied;

[0073] Figure 6 A diagram of an embodiment procedure of a communication method in embodiments of the present disclosure;

[0074] Figure 7 A diagram of a first CC and a second CC in embodiments of the present disclosure;

[0075] Figure 8 Another diagram of a first CC and a second CC in embodiments of the present disclosure;

[0076] Figures 9a to 9i Figure 1 is a schematic diagram of one transmission mode in an embodiment of the application;

[0077] Figures 10a to 10i Figure 2 is a schematic diagram of one transmission mode in an embodiment of the application;

[0078] Figure 11 Figure 3 is a schematic diagram of one structure of a communication device in an embodiment of the application;

[0079] Figure 12 Figure 4 is a schematic diagram of another structure of a communication device in an embodiment of the application;

[0080] Figure 13 Figure 5 is a schematic diagram of another structure of a communication device in an embodiment of the application;

[0081] Figure 14 Figure 6 is a schematic diagram of one structure of a terminal device in an embodiment of the application. DETAILED DESCRIPTION

[0082] Reference throughout this application to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in some embodiments" in various places in the specification are not necessarily all referring to the same embodiment, however, but can refer to one or more but not all embodiments. The terms "including," "comprising," "having" and variations thereof herein are meant to be open-ended terms that can cover the presence of subs tants of one or more features, structures, or characteristics, but do not exclude the presence of other features, structures, or characteristics. The term "consisting of" is meant to be a closed term that can cover the presence of only the features, structures, or characteristics specifically identified.

[0083] In the description of the application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B. "And / or" in this document is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or the like means any combination of the items, including any combination of single item or multiple items. For example, at least one of a, b, or c can mean a, b, c, a and b, a and c, b and c, or a and b and c. Where a, b, c can be single or multiple.

[0084] First, some terms in the embodiments of the application are explained and described to facilitate understanding by those skilled in the art.

[0085] (1) Configuration and pre-configuration: in this application, configuration and pre-configuration will be used at the same time. Among them, configuration refers to that the network device and / or server sends some parameter configuration information or parameter values to the terminal through messages or signaling, so that the terminal determines the parameters of communication or the resources in transmission according to the values or information. Pre-configuration is similar to configuration, which can be the parameter information or parameter values agreed by the network device and / or server and the terminal device in advance, or the parameter information or parameter values adopted by the base station / network device or terminal device specified in the standard protocol, or the parameter information or parameter values pre-stored in the base station and / or server or terminal device. This application does not limit it.

[0086] Further, these values and parameters can be changed or updated.

[0087] (2) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "Multiple" means two or more. "And / or" describes the association between the associated objects, which means that there can be three relationships, for example, A and / or B, which means that A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. In addition, unless otherwise specified, the ordinal numbers "first", "second", etc. mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, time sequence, priority or importance of multiple objects.

[0088] (3) "Send" and "receive" in the embodiments of the present application represent the direction of signal transmission. For example, "sending information to XX" can be understood as that the destination of the information is XX, which can include direct sending through the air interface, or indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as that the source of the information is YY, which can include direct receiving from YY through the air interface, or indirect receiving from YY through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0089] In other words, sending and receiving can be carried out between devices, for example, between network devices and terminal devices, or within devices, for example, between components, modules, chips, software modules or hardware modules within devices through buses, wires or interfaces.

[0090] It can be understood that the information can be processed, such as encoding and modulation, between the source end and the destination end of the information transmission, but the destination end can understand the effective information from the source end. Similar expressions in this application can be similarly understood and will not be repeated.

[0091] (4) In the embodiments of the present application, "indication" can include direct indication and indirect indication, and can also include explicit indication and implicit indication. The information indicated by certain information (indication information described below) is referred to as to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be indicated only by a part, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can be achieved by means of the arrangement order of each information agreed in advance (for example, protocol predefined), thereby reducing the indication overhead to a certain extent. The present application does not limit the specific way of indication. It can be understood that the indication information can be used to indicate the to-be-indicated information for the sender of the indication information, and the indication information can be used to determine the to-be-indicated information for the receiver of the indication information.

[0092] (5) Carrier aggregation (CA).

[0093] The carrier is used to carry signals. Taking a terminal device as an example, the terminal device can transmit signals in the carrier. For ease of understanding, please refer to Figure 1 , Figure 1 for a single carrier structure schematic diagram. The carrier specifically includes: guard bandwidth and transmission bandwidth, wherein the guard bandwidth refers to the bandwidth reserved on both sides of the carrier frequency domain to prevent spectrum leakage. The function of the guard bandwidth is to reduce the interference between the carrier and the adjacent channel. The transmission bandwidth refers to the actual bandwidth occupied by the carrier, that is, the frequency range of the signals carried by the carrier. The minimum unit of the transmission bandwidth is a resource block (RB). The maximum number of RBs (or the maximum number of RBs, NRB) supported by the carrier is determined by the channel bandwidth. The terminal device can transmit signals in any RB within the transmission bandwidth. It should be noted that the guard bandwidth on both sides of the transmission bandwidth can be asymmetric, for example, the guard bandwidth on one side of the transmission bandwidth occupies 2 RBs, and the guard bandwidth on the other side occupies 0 RBs.

[0094] Carrier aggregation refers to aggregating carriers of the same band or different bands as one carrier to improve bandwidth and thus improve the peak rate of users. A terminal device supporting carrier aggregation can access multiple carriers, and the terminal device can perform uplink or downlink data transmission on the multiple carriers to improve the data rate. According to the bands in which the carriers are located, carrier aggregation can be divided into intra-band carrier aggregation (intra-band CA) and inter-band carrier aggregation (Inter-band CA), which are described below.

[0095] Intra-band carrier aggregation refers to uplink and downlink data transmission of a user on multiple carriers of the same band. Please refer to Figure 2a and Figure 2b , Figure 2a is a schematic diagram of intra-band carrier aggregation, Figure 2b is another schematic diagram of intra-band carrier aggregation. Among them, Figure 2a illustrates intra-band contiguous CA, Figure 2b illustrates intra-band non-contiguous CA.

[0096] Inter-band carrier aggregation refers to uplink and downlink data transmission of a user on multiple carriers of different bands. Please refer to Figure 2c , Figure 2c is a schematic diagram of inter-band carrier aggregation.

[0097] Further, the component carrier (CC) in carrier aggregation refers to each carrier participating in carrier aggregation. The component carrier can be divided into a primary component carrier (PCC) and a secondary component carrier (SCC), wherein the PCC is connected with a primary cell (PCell) and the SCC is connected with a secondary cell (SCell). The primary cell refers to a cell operating in a primary band, and the secondary cell refers to a cell operating in a secondary band. The secondary cell can be configured to provide additional radio resources.

[0098] Carrier aggregation has the following three states: only PCC is configured, no SCC is configured; SCC is configured, but SCC is not activated; and SCC is configured and activated.

[0099] (6) Maximum power reduction (MPR).

[0100] In a wireless communication network, the transmit power of a terminal device is a key factor affecting the terminal device to send data to a network device. The transmit power of the terminal device mainly depends on a power amplifier (PA). The role of the PA is to convert a low-power signal into a high-power signal. The radio frequency signal power generated by the modulation oscillation circuit in the terminal device is small, and needs to be amplified by the power amplifier to obtain sufficient radio frequency power before being fed to the antenna for radiation. Therefore, the transmit power directly affects the communication quality. For example, when the transmit power of the terminal device is low, it may cause unstable communication.

[0101] The transmit power of the terminal device is mainly limited by the uplink radio frequency index. The uplink radio frequency index is to ensure that the signal quality of the transmit signal of the terminal device and the interference generated by the transmit signal to other devices are at a reasonable level. In the embodiments of the present application, the uplink direction refers to the direction from the terminal device to the network device, and the corresponding downlink direction refers to the direction from the network device to the terminal device.

[0102] The core device of the PA is a transistor and other semiconductor devices, so the PA has a nonlinear characteristic. Considering that the nonlinearity of the PA is serious at high transmit power, the RF index cannot be met, so the maximum transmit power of the terminal device can be backed off. For example, the maximum transmit power of the terminal device is determined by the maximum power backoff (MPR). One factor affecting the MPR is RB allocation, which can also be referred to as: RB allocation mode, or RB allocation scheme, or RB allocation corresponding to the transmission mode, or RB allocation mode corresponding to the transmission mode. The RB allocation refers to the relative position relationship between the transmission resource of the terminal device and the RB carried by the carrier, or the relative position relationship between the actually allocated RB of the transmission resource and the maximum RB that the carrier can theoretically carry. The transmission resource is a frequency domain resource, which specifically includes the starting position of the RB (or the RB position indicated by the starting RB index, or simply referred to as the starting RB index) and the number of continuously allocated RBs (or the number of continuous RBs included in the scheduling resource, or simply referred to as the number of continuous RBs), so the RB allocation refers to the relative position relationship between the RB of the transmission resource and the reference bandwidth. Specifically, the RB allocation includes: internal RB allocation, external RB allocation, and edge RB allocation.

[0103] Taking a single carrier scenario as an example, please refer to Figure 3a , Figure 3a for a RB allocation diagram of a single carrier scenario. The internal RB allocation: the starting RB index (RBStart) of the transmission resource and the number of continuous RBs (LCRB) of the transmission resource need to satisfy the following conditions:

[0104] RB Start,Low ≤RB Start ≤RB Start,High;

[0105] L CRB ≤ ceil(N RB / 2);

[0106] where RB Start,Low = max(1, floor(L CRB / 2)), RB Start,High = N RB - RB Start,Low - L CRB . N RB is the maximum RB number of the carrier, ceil is the down rounding to the number greater than or equal to N RB / 2. The continuous RB number of the transmission resource refers to the number of the RBs allocated continuously in the transmission resource, and the maximum RB number of the component carrier refers to the maximum number of the RBs allowed to be configured in the component carrier.

[0107] Taking the single carrier scenario as an example, the edge RB allocation refers to that the starting RB of the transmission resource belongs to the first RB or the second RB carried by the carrier, or the starting RB of the transmission resource coincides with the first RB (RB0) or the second RB (RB1) carried by the carrier.

[0108] If the RB allocation does not belong to the internal RB allocation nor the edge RB allocation, the allocation of the RB is the external RB allocation.

[0109] For the carrier aggregation scenario, i.e., the multi-carrier scenario, it can be specifically divided into the carrier aggregation continuous allocation scenario and the carrier aggregation non-continuous allocation scenario. The following will be described respectively.

[0110] Regarding the carrier aggregation continuous allocation scenario, the continuous allocation is defined to satisfy the following three conditions: 1), L CRB1 = 0; or 2), L CRB2 = 0; or 3), L CRB1 ≠ 0, L CRB2 ≠ 0, RB Start1 + L CRB1 = N RB1 , RB Start2 = 0. Wherein, L CRB1 refers to the continuous RB number of the transmission resource 1 carried in the component carrier 1 (CC1), L CRB2 refers to the continuous RB number of the transmission resource 2 carried in the component carrier 2 (CC2), RB Start1 refers to the starting RB index of the transmission resource 1, N RB1 refers to the maximum RB number of the component carrier 1, and RB Start2RBstartindex refers to the start RB index of the transmission resource 2. Specifically, case 1) refers to that the component carrier 2 is activated, the component carrier 1 is not activated, and data is transmitted in the component carrier 2; case 2) refers to that the component carrier 1 is activated, the component carrier 2 is not activated, and data is transmitted in the component carrier 1; and case 3) refers to that the component carrier 1 and the component carrier 2 are both activated, data is continuously transmitted in the component carrier 1 and the component carrier 2, and there is no free RB between the component carrier 1 and the component carrier 2 in the frequency domain.

[0111] RB allocation in the carrier aggregation continuous allocation scenario is shown as Figure 3b Figure 3b Fig. 1 is a schematic diagram of RB allocation in the carrier aggregation continuous allocation scenario. Taking component carrier 1 (CC1) and component carrier 2 (CC2) as an example, where the frequency of CC1 is lower than that of CC2. The transmission resource satisfying the following conditions is internal RB allocation:

[0112] RB Start,Low ≤RB Start_CA ≤RB Start,High , and N RB_alloc ≤ceil(N RB,agg / 2),

[0113] wherein:

[0114] RB Start,Low = max(1, floor(N RB_alloc / 2)),

[0115] RB Start,High = N RB,agg – RB Start,Low – N RB,alloc ,

[0116] N RB_alloc = L CRB1 · 2^μ1+ L CRB2 · 2^μ2,

[0117] N RB,agg = N RB1 · 2^μ1+ N RB2 · 2^μ2;

[0118] If L CRB1 = 0, RB Start_CA = N RB1 · 2^μ1+ RB Start2 · 2^μ2,

[0119] if L CRB1 > 0, RB Start_CA = RB Start1 · 2^μ1,

[0120] ​wherein, L CRB1 is the number of contiguous RBs of the transmission resource corresponding to CC1 (or the number of contiguous RBs of the partial transmission resource of the transmission resource in the frequency domain within CC1), L CRB2 is the number of contiguous RBs of the transmission resource corresponding to CC2 (or the number of contiguous RBs of the partial transmission resource of the transmission resource in the frequency domain within CC2), N RB1 is the maximum number of RBs of CC1, N RB2 is the maximum number of RBs of CC2. RB Start_CA is the index of the starting RB of the transmission resource (or the index of the RB from which the transmission resource starts to be transmitted). μ1 and μ2 are the numerologies of CC1 and CC2, respectively, and are related to the configured subcarrier spacing. N RB_alloc is the sum of the actually allocated RBs of CC1 and the actually allocated RBs of CC2, N RB,agg is the sum of the bandwidths of CC1 and CC2.

[0121] Regarding the carrier aggregation non-continuous allocation scenario, the definition of non-continuous allocation is as follows: both component carrier 1 and component carrier 2 are activated to transmit data, and there are idle RBs between component carrier 1 and component carrier 2 in the frequency domain. The RB allocation under the carrier aggregation non-continuous allocation scenario is shown in Figure 3c . Figure 3c is a schematic diagram of RB allocation under the carrier aggregation non-continuous allocation scenario.

[0122] (7) Radio frequency (RF) architecture of uplink carrier aggregation of terminal equipment.

[0123] Taking terminal equipment as an example, the uplink CA of the terminal equipment usually supports 2 component carriers, that is, supports one PCC and one SCC. There are two common RF architectures as follows: single power amplifier (PA) and single local oscillator (LO) architecture, or double PA and double LO architecture.

[0124] Regarding the single PA and single LO architecture, it refers to a group of PA and LO transmitting two CCs, the LO being used to provide a signal of a specific frequency, and the PA being used to transmit the CC. For example Figure 4a . Figure 4a is a schematic diagram of the single PA and single LO architecture. The terminal equipment includes a first entity, the first entity including a first PA and a first LO, and the first entity being used to transmit the first CC and the second CC.

[0125] Regarding the double PA and double LO architecture, it refers to that the terminal equipment includes two groups of independent PA and LO, for example, Figure 4b . Figure 4bThe figure is a schematic diagram of a dual-PA dual-LO architecture. The terminal device includes a first entity and a second entity, the first entity includes a first PA and a first LO, and the second entity includes a second PA and a second LO, the first entity is used to send a first CC, and the second entity is used to send a second CC. The reason for introducing the dual-PA dual-LO architecture is that when the bandwidth of carrier aggregation is large, one PA cannot support it, so two PAs are needed to support the carrier. For a terminal device with a dual-PA dual-LO architecture, the following definition is provided: for a single-band band combination with uplink (UL) CA, this field indicates that dual-PA and dual-LO frequencies are supported for Frequency Range (FR) 1, or dual-LO frequencies are supported for FR2. If not present in such band combinations, the UE supports single PA and single LO frequencies for all ULs for FR1, or single LO frequencies for all ULs for FR2. For other band combinations, this field is not applicable. “For band combinations with single-band with UL CA, this field indicates the support of dual PA and dual LO frequencies for FR1, or dual LO fequencies for FR2. if absent in such band combinations, the UE supports single PA and single LOfrequency for all the ULs for FR1, or single LO fequency for all the ULs forFR2. For other band combinations, this field is not applicable.”

[0126] With the development of communication technology, it is necessary for a terminal device to flexibly adjust the transmit power (the transmit power can also be referred to as the sending power, and the embodiments of the present application do not limit this). In the process of determining the transmit power, the terminal device needs to first determine the MPR, and then determine the transmit power according to the MPR. For a two-component carrier scenario, the current protocol stipulates that the two component carriers are only applicable to the same RB allocation, for example, if the RB allocation of CC1 is internal RB allocation, then the RB allocation of CC2 is also internal RB allocation, and for example, if the RB allocation of CC1 is external RB allocation, then the RB allocation of CC2 is also external RB allocation, in other words, the two CCs can only apply to the same MPR.

[0127] The applicant finds that for a terminal device with a dual-PA dual-LO architecture, each group of PA-LO transmitting CCs is independent, and therefore the terminal device does not interfere with each other when transmitting two CCs. Therefore, it is unreasonable for the terminal device with a dual-PA dual-LO architecture to adopt the same MPR when transmitting two CCs as currently specified in the protocol. How to determine the MPR of the terminal device with a dual-PA dual-LO architecture becomes a problem to be solved.

[0128] Based on this, the embodiment of the application proposes a communication method and related apparatus, the method comprising: determining a first maximum power backoff MPR according to a first transmission resource, the first transmission resource being a transmission resource corresponding to a first component carrier CC, the first transmission resource comprising one or more resource blocks RBs, the first MPR being used to indicate a power backoff value of a first signal carried by the first CC; determining a second MPR according to a second transmission resource, the second transmission resource being a transmission resource corresponding to a second CC, the second transmission resource comprising one or more RBs, the second MPR being used to indicate a power backoff value of a second signal carried by the second CC. For two mutually independent component carriers, the terminal device can independently determine the maximum power backoff of the transmission resource corresponding to each component carrier according to the transmission resource. So that the terminal device can determine the transmission power of the signal carried by each component carrier based on the independent maximum power backoff, and the signals carried by different component carriers can use different transmission powers, which improves the opportunity for the signals carried by different component carriers to obtain power gain.

[0129] Next, the embodiments of the application will be described in conjunction with the drawings.

[0130] First, the communication system to which the embodiments of the application are applied is introduced. The application can be applied to a long term evolution (LTE) system, a new radio (NR) system, or other communication systems, such as a future communication system, wherein the communication system comprises a network device and a terminal device, the network device serving as a configuration information sending entity, and the terminal device serving as a configuration information receiving entity. Specifically, there is an entity in the communication system that sends configuration information to another entity, and sends data to another entity or receives data sent by another entity; another entity receives configuration information and sends data to the configuration information sending entity according to the configuration information or receives data sent by the configuration information sending entity. Wherein, the application can be applied to a terminal device in a connected state or an active state (ACTIVE), and can also be applied to a terminal device in an inactive state (INACTIVE) or an idle state (IDLE).

[0131] Please refer to Figure 5 The architecture schematic diagram of the communication system 1000 to which the embodiments of the application are applied is shown in FIG. 1. As shown in FIG. 1, the communication system 1000 comprises a network device 100 and a terminal device 200. Figure 5As shown, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 can also include an Internet 300. The RAN 100 includes at least one RAN node (e.g., 110a and 110b, collectively referred to as 110) in the RAN 100, and can also include at least one terminal (e.g., 120a-120j, collectively referred to as 120) in the RAN 100. The RAN 100 can also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1). The terminals 120 are wirelessly connected to the RAN nodes 110, and the RAN nodes 110 are connected to the core network 200 through wireless or wired connections. The core network devices in the core network 200 and the RAN nodes 110 in the RAN 100 can be independent and different physical devices, or can be the same physical device that integrates the logical functions of the core network devices and the logical functions of the RAN nodes. Terminals and terminals, and RAN nodes and RAN nodes, can be connected to each other through wired or wireless connections. Figure 5 Figure 5 The RAN 100 can be an evolved universal terrestrial radio access (E-UTRA) system, an NR system, and a future wireless access system defined by the 3rd generation partnership project (3GPP). The RAN 100 can also include two or more different wireless access systems. The RAN 100 can also be an open RAN (O-RAN). Figure 5 The RAN node, also referred to as a radio access network device, a RAN entity, or an access node, is used to help terminals access the communication system through wireless means. In an application scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, or a base station in a future mobile communication system. The RAN node can be a macro base station (e.g., 110a in FIG. 1), a micro base station or an indoor station (e.g., 110b in FIG. 1), a relay node or a donor node.

[0132] The RAN node, also referred to as a radio access network device, a RAN entity, or an access node, is used to help terminals access the communication system through wireless means. In an application scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, or a base station in a future mobile communication system. The RAN node can be a macro base station (e.g., 110a in FIG. 1), a micro base station or an indoor station (e.g., 110b in FIG. 1), a relay node or a donor node.

[0133] Figure 5 The RAN node, also referred to as a radio access network device, a RAN entity, or an access node, is used to help terminals access the communication system through wireless means. In an application scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, or a base station in a future mobile communication system. The RAN node can be a macro base station (e.g., 110a in FIG. 1), a micro base station or an indoor station (e.g., 110b in FIG. 1), a relay node or a donor node. Figure 5

[0134] ​​​For the sake of description, a base station is described as an example of the RAN node hereinafter.

[0135] A terminal is a device having a wireless transceiving function, and can transmit a signal to a base station or receive a signal from a base station. Alternatively, a terminal can be a device or a module having a corresponding communication function to access the above-described communication system. A communication module, a circuit, or a chip performing a corresponding communication function is generally provided in a terminal. A program instruction configured to perform a corresponding communication function is also provided in a terminal.

[0136] Terminal device, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), fixed wireless access (FWA), customer premise equipment (CPE), etc. Terminal device is a device including wireless communication function (providing voice / data connectivity to users). For example, handheld devices with wireless connection function, vehicle-mounted devices, machine type communication (MTC) terminals, etc. At present, terminal devices can include mobile phones, tablets, notebooks, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self driving (e.g. drones, vehicles), wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, or wireless terminals in smart home, etc. For example, wireless terminals in self driving can be drones, helicopters, or airplanes, etc. For example, wireless terminals in Internet of Vehicles can be vehicle-mounted devices, whole vehicle devices, vehicle-mounted modules, vehicles, or ships, etc. Wireless terminals in industrial control can be cameras, robots, or mechanical arms, etc. Wireless terminals in smart home can be televisions, air conditioners, sweeping machines, sound boxes, or set-top boxes, etc. Terminal devices can also be devices or modules with corresponding communication functions accessing the above-mentioned communication systems. Terminal devices are usually provided with communication modules, circuits or chips for executing corresponding communication functions, and are also configured with program instructions for executing corresponding communication functions.

[0137] The base station and the terminal can be fixed in position or mobile. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water surface; can also be deployed on aircraft, balloons and artificial satellites. Embodiments of the present application do not limit the application scenarios of the base station and the terminal.

[0138] The roles of the base station and the terminal can be relative, for example, Figure 5The helicopter or unmanned aerial vehicle 120i in FIG. 1 can be configured as a mobile base station, and for those terminals 120j accessing the wireless access network 100 through the 120i, the 120i is a base station; but for the base station 110a, the 120i is a terminal, that is, the 110a and the 120i communicate through a wireless air interface protocol. Of course, the 110a and the 120i can also communicate through a base station-to-base station interface protocol, and at this time, the 120i is also a base station relative to the 110a. Therefore, the base station and the terminal can be collectively referred to as a communication device, Figure 5 The 110a and the 110b in FIG. 1 can be referred to as a communication device with a base station function, Figure 5 The 120a-120j in FIG. 1 can be referred to as a communication device with a terminal function.

[0139] The base station and the terminal, the base station and the base station, and the terminal and the terminal can communicate through a licensed frequency spectrum, or through an unlicensed frequency spectrum, or through both the licensed frequency spectrum and the unlicensed frequency spectrum; can communicate through a frequency spectrum below 6 gigahertz (GHz), or through a frequency spectrum above 6 GHz, or through both the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz. The embodiments of the present application do not limit the frequency spectrum resources used by wireless communication.

[0140] In the embodiments of the present application, the functions of the base station can also be performed by a module (such as a chip) in the base station, or by a control subsystem containing a base station function. The control subsystem containing a base station function here can be a control center in the above-mentioned application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal can also be performed by a module (such as a chip or a modem) in the terminal, or by a device containing a terminal function.

[0141] Please refer to Figure 6 , Figure 6 FIG. 1 is a flowchart of an embodiment of a communication method in the embodiments of the present application. The communication method proposed in the embodiments of the present application can be applied to a terminal device. In an example, the terminal device includes a first power amplifier (PA) and a first local oscillator (LO), and a second PA and a second LO, wherein the first PA and the first LO correspond to a first component carrier (CC), and the second PA and the second LO correspond to a second CC. The two groups of PA and LO are independent of each other, the MPR of the first CC can be determined independently, the MPR of the second CC can also be determined independently, the two groups of PA and LO can respectively transmit signals on the respective corresponding component carriers, and the transmission power of the two groups of PA and LO when transmitting signals on the respective corresponding component carriers can be determined independently.

[0142] It can be understood that the terminal device can further include more PAs and LOs, for example, a third PA and a third LO, and embodiments of the present application do not limit this. A third component carrier corresponding to the third PA and the third LO is independent of the first CC and the second CC, three groups of PAs and LOs in the terminal device are independent of each other, and the MPR of the third CC corresponding to the third PA and the third LO can also be determined independently. The third PA and the third LO can independently transmit a signal on the corresponding third CC, and the transmission power of the signal can be independently determined.

[0143] The communication method provided in the embodiments of the present application comprises:

[0144] S1, determining a first maximum power reduction (MPR) according to a first transmission resource, the first transmission resource being a transmission resource corresponding to a first component carrier (CC), and the first MPR being used to indicate a power reduction value of a first signal carried by the first CC.

[0145] In step S1, the first transmission resource is a transmission resource corresponding to the first component carrier, and the transmission resource corresponding to the first component carrier refers to a transmission resource allocated in the range of the first component carrier in the frequency domain, and the first transmission resource includes one or more resource blocks (RBs).

[0146] In a possible implementation, the first MPR is determined according to the first transmission resource, including: determining a first transmission mode corresponding to the first transmission resource according to the first transmission resource and the first CC; and determining the first MPR according to the first transmission mode corresponding to the first transmission resource.

[0147] Specifically, the first transmission mode corresponding to the first transmission resource is determined according to a number of consecutive RBs of the first transmission resource (referred to as a first number of consecutive RBs, which refers to the number of consecutively allocated RBs of the first transmission resource), an index of a starting RB of the first transmission resource (referred to as a first starting RB index, which refers to the RB index corresponding to the starting position of the first transmission resource in the frequency domain), and a maximum number of RBs carried by the first CC (referred to as a first maximum number of RBs).

[0148] In the embodiments of the present application, the transmission mode can include: an inner RB allocation, an outer RB allocation, or an edge RB allocation. In order to facilitate the distinction, the first transmission mode includes: a first inner RB allocation, a first outer RB allocation, or a first edge RB allocation. Since different transmission modes correspond to different MPRs, after determining the first transmission mode, the corresponding first MPR can be determined. For example, if the first transmission mode is determined to be the first inner RB allocation, the first MPR is determined according to the first inner RB allocation. For another example, if the first transmission mode is determined to be the first outer RB allocation, the first MPR is determined according to the first outer RB allocation. For yet another example, if the first transmission mode is determined to be the first edge RB allocation, the first MPR is determined according to the first edge RB allocation.

[0149] In an example, the relationship between the first transmission mode and the corresponding first MPR is shown in Table 1.

[0150] Table 1

[0151]

[0152] In Table 1, the descriptions of the related terms are as follows: DFT-s-OFDM: Discrete Fourier Transform Spread-Orthogonal Frequency Division Multiplexing; Pi / 2 BPSK: Pi / 2 Binary Phase Shift Keying; Pi / 2 BPSK w Pi / 2 BPSK DMRS: Pi / 2 Binary Phase Shift Keying with Pi / 2 Binary Phase Shift Keying Demodulation Reference Signal; QPSK: Quadrature Phase Shift Keying; 16QAM: 16 Quadrature Amplitude Modulation; 64QAM: 64 Quadrature Amplitude Modulation; 256QAM: 256 Quadrature Amplitude Modulation; CP-OFDM: Cyclic Prefix-Orthogonal Frequency Division Multiplexing.

[0153] In another example, the relationship between the first transmission mode and the corresponding first MPR is shown in Table 2.

[0154] Table 2

[0155]

[0156] Next, the specific method for determining the first transmission mode corresponding to the first transmission resource is introduced.

[0157] In a possible implementation, the first transmission mode corresponding to the first transmission resource is determined according to the first transmission resource and the first CC, including: determining the first transmission mode according to the first continuous RB number, the first maximum RB number, the first starting RB index, and / or the first rule, wherein the first continuous RB number is a number of continuously allocated RBs of the first transmission resource, the first maximum RB number is a maximum number of RBs carried by the first CC, the first starting RB index is an index of a starting RB of the first transmission resource, and the first rule includes a first boundary value and a second boundary value, the first boundary value being determined according to the first continuous RB number, and the second boundary value being determined according to the first continuous RB number and the first maximum RB number.

[0158] In an example, the first rule includes at least one of the following conditions:

[0159] Condition 1: the first starting RB index is greater than or equal to the first boundary value, or the first starting RB index is less than or equal to the second boundary value, the first boundary value being a 1 / 2 integer of the first continuous RB number, the second boundary value being a difference between the first maximum RB number and the first continuous RB number, and the first continuous RB number being less than or equal to 2 / 3 times the first maximum RB number.

[0160] Condition 2: the starting RB of the first transmission resource belongs to the first RB carried by the first CC or the second RB carried by the first CC (for example, the first RB carried by the first CC is RB0, and the second RB carried by the first CC is RB1).

[0161] When the condition 1 is met, the first transmission mode is determined as the first internal RB allocation.

[0162] When the condition 2 is met, the first transmission mode is determined as the first boundary RB allocation.

[0163] When the conditions 1 and 2 are not met, the first transmission mode is determined as the first external RB allocation.

[0164] Further, in an example, the condition 1 is met as follows:

[0165] RB start,low,1 ≤RB start,1 ≤RB start,high,1 ,

[0166]

[0167] RB start,high,1 =N RB,1 -L CRB,1 ,

[0168]

[0169] wherein the first boundary value is RB start,low,1 , the second boundary value is RB start,high,1 , the first start RB index is RB start,1 , the first maximum RB number is N RB,1 , the first continuous RB number is L CRB,1 , floor means down rounding processing, and ceil means up rounding processing.

[0170] S2, determine the first transmit power according to the first MPR.

[0171] In step S2, the first MPR is used to indicate the power backoff value of the first signal carried by the first CC, and thus after the first MPR is determined, the first transmit power can be determined in combination with the maximum transmit power of the terminal device at present.

[0172] In a possible implementation, the first transmit power refers to the transmit power of the first PA and the first LO in transmitting the first signal carried by the first CC on the first transmission resource.

[0173] In an example, the maximum transmit power of the terminal device at present is: P CMAX,f,c ;

[0174] P CMAX_L,f,c ≤ P CMAX,f,c ≤ P CMAX_H,f,c ;

[0175]

[0176] wherein P CMAX_L,f,c is the lower limit of P CMAX,f,c , P CMAX_H,f,c is the upper limit of P CMAX,f,c . P EMAX,c is the maximum transmit power configured by the network device to the terminal device, the power class (PC) capability reported by the terminal device to the network device is P PowerClass , ΔP PowerBoost is the allowed power increase for the internal RB allocation area, and ΔP PowerClassAllow terminal device to reduce power level in some cases. ΔMPR, A-MPR (additional maximum power backoff) and P-MPR are corresponding power backoff in different cases, which considers that PA nonlinearity is very serious under high power and cannot meet the defined RF index. MPR mainly considers different RB allocation areas, different modulation methods and different waveforms and other factors. ΔMPR considers that the working bandwidth is too large to allow further backoff. A-MPR allows additional power backoff because the radiation index of some regions is set very small. Human body radiation is a regional regulation, and P-MPR ensures that the power of the human body radiation index does not exceed the standard.

[0177] S3, according to the first transmission power, transmitting the first signal of the first CC bearer on the first transmission resource.

[0178] In step S3, after determining the first transmission power, the terminal device transmits the first signal of the first CC bearer on the first transmission resource.

[0179] In a possible implementation, the first PA and the first LO transmit the first signal of the first CC bearer on the first transmission resource according to the first transmission power.

[0180] D1, according to the second transmission resource, determining a second MPR, the second transmission resource being a transmission resource corresponding to a second CC, and the second MPR being used to indicate a power backoff value of a second signal of the second CC bearer.

[0181] In step D1, the second transmission resource is a transmission resource corresponding to a second component carrier, which means that the transmission resource corresponding to the second component carrier is allocated in the frequency domain within the range of the second component carrier, and the second transmission resource includes one or more resource blocks (RBs).

[0182] In a possible implementation, according to the second transmission resource, determining a second MPR includes: according to the second transmission resource and the second CC, determining a second transmission mode corresponding to the second transmission resource; and according to the second transmission mode corresponding to the second transmission resource, determining the second MPR.

[0183] Specifically, according to the number of consecutive RBs of the second transmission resource (referred to as the second number of consecutive RBs, which means the number of consecutively allocated RBs of the second transmission resource), the index of the starting RB of the second transmission resource (referred to as the second starting RB index, which means the RB index corresponding to the starting position of the second transmission resource in the frequency domain), and the maximum number of RBs carried by the second CC (referred to as the second maximum number of RBs), the second transmission mode corresponding to the second transmission resource is determined.

[0184] For convenience of distinction, the second transmission mode includes: a second inner RB allocation, a second outer RB allocation, or a second edge RB allocation. Since different transmission modes correspond to different MPRs, after determining the second transmission mode, the corresponding second MPR can be determined. For example, if the second transmission mode is determined to be the second inner RB allocation, the second MPR is determined according to the second inner RB allocation. For another example, if the second transmission mode is determined to be the second outer RB allocation, the second MPR is determined according to the second outer RB allocation. For another example, if the second transmission mode is determined to be the second edge RB allocation, the second MPR is determined according to the second edge RB allocation.

[0185] Exemplarily, the relationship between the second transmission mode and the corresponding second MPR is similar to the relationship between the first transmission mode and the corresponding first MPR illustrated in the aforementioned Table 1 or Table 2, which is not repeated here.

[0186] Next, a specific method for determining the second transmission mode corresponding to the second transmission resource is introduced.

[0187] In a possible implementation manner, the second transmission mode is determined according to the second continuous RB quantity, the second maximum RB quantity, the second starting RB index, and / or the second rule, where the second continuous RB quantity is the number of continuously allocated RBs of the second transmission resource, the second maximum RB quantity is the maximum RB quantity carried by the second CC, the second starting RB index is the index of the starting RB of the second transmission resource, and the second rule includes a third boundary value and a fourth boundary value, the third boundary value being determined according to the second continuous RB quantity, and the fourth boundary value being determined according to the second continuous RB quantity and the second maximum RB quantity.

[0188] Taking the frequency of the first CC being lower than the frequency of the second CC as an example, a method for determining the second transmission mode is introduced. The frequency of the first CC being lower than the frequency of the second CC means that the frequency of the RB carried by the first CC is less than the frequency of the RB carried by the second CC in the frequency domain. In an example, the second rule includes at least one of the following conditions:

[0189] Condition 3: the second starting RB index is greater than or equal to the third boundary value, or the second starting RB index is less than or equal to the fourth boundary value, the third boundary value being equal to 0, and the fourth boundary value being equal to the second maximum RB quantity minus the second continuous RB quantity minus 1 / 2 of the second continuous RB quantity, the second continuous RB quantity being less than or equal to 2 / 3 of the second maximum RB quantity up to the integer.

[0190] Condition 4: the sum of the second starting RB index and the second continuous RB quantity is greater than or equal to the difference between the second maximum RB quantity and 2;

[0191] When the condition 3 is met, the second transmission mode is determined to be the second inner RB allocation;

[0192] When condition 4 is satisfied, the second transmission mode is determined to be the second boundary RB allocation;

[0193] When condition 3 and condition 4 are not satisfied, the second transmission mode is determined to be the second outer RB allocation.

[0194] Further, in an example, condition 3 is satisfied:

[0195] RB start,low,2 ≤RB start,2 ≤RB start,high,2 ,

[0196] RB start,low,2 = 0,

[0197]

[0198] wherein the third boundary value is RB start,low,2 , the fourth boundary value is RB start,high,2 , the second starting RB index is RB start,2 , the second maximum RB number is N RB,2 , and the second continuous RB number is L CRB,2 .

[0199] It should be noted that the first CC and the second CC belong to the same carrier aggregation (CA).

[0200] In a possible implementation, the first CC is continuous with the second CC in the frequency domain. For ease of understanding, please refer to Figure 7 , Figure 7 is a schematic diagram of the first CC and the second CC in the embodiments of the present application. The first CC and the second CC are continuous and non-overlapping in the frequency domain. Non-overlapping means that the RBs allocated by the first CC and the RBs allocated by the second CC are not consistent.

[0201] In another possible implementation, the first CC is discontinuous with the second CC in the frequency domain. For ease of understanding, please refer to Figure 8 , Figure 8 is another schematic diagram of the first CC and the second CC in the embodiments of the present application. The first CC and the second CC are discontinuous and non-overlapping in the frequency domain. Discontinuous means that there is a gap between the first CC and the second CC in the frequency domain.

[0202] D2, determining a second transmission power according to a second MPR.

[0203] In step D2, the second MPR is used to indicate the power backoff value of the second signal carried by the second CC. Therefore, after the second MPR is determined, the second transmission power can be determined in combination with the maximum transmission power of the terminal device at present.

[0204] In a possible implementation, the second transmit power refers to transmit power of the second PA and the second LO for transmitting the second signal of the second CC on the second transmission resource.

[0205] In an example, since the first MPR and the second MPR are determined independently, the first MPR is different from the second MPR.

[0206] D3, transmitting, according to the second transmit power, the second signal of the second CC on the second transmission resource.

[0207] In step D3, after determining the second transmit power, the terminal device transmits the second signal of the second CC on the second transmission resource.

[0208] In a possible implementation, the second PA and the second LO transmit the second signal of the second CC on the second transmission resource according to the second transmit power.

[0209] It should be noted that steps D1 to D3 and steps S1 to S3 are independent of each other, and the execution order of steps D1 to D3 and steps S1 to S3 is not limited in the embodiments of the present application.

[0210] In the above technical solution, for two mutually independent component carriers, the terminal device can independently determine the maximum power backoff of the transmission resource corresponding to each component carrier. So that the terminal device can determine the transmit power of the signal carried by each component carrier based on the independent maximum power backoff. The signals carried by different component carriers can use different transmit powers, which improves the opportunity for power gain of the signals carried by different component carriers. For example, the first PA and the first LO in the terminal device transmit the first signal carried by the first CC on the first transmission resource, and the second PA and the second LO in the terminal device transmit the second signal carried by the second CC on the second transmission resource. Since the first MPR corresponding to the first transmission resource and the second MPR corresponding to the second transmission resource are independent of each other, the first MPR is different from the second MPR, and then the first transmit power is different from the second transmit power, so as to flexibly adapt to different service requirements and improve the opportunity for power gain of the terminal device.

[0211] In combination with the foregoing embodiments, some examples proposed by the embodiments of the present application are introduced as follows.

[0212] First, taking the case that the first CC and the second CC are continuous in the frequency domain as an example, that is, taking the case that the first CC and the second CC are adjacent in the frequency domain as an example. Figure 7 Taking the first CC and the second CC as an example.

[0213] Example 1, please refer to Figure 9a , Figure 9aFigure 1 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is an inner RB allocation, and the second transmission mode corresponding to the second transmission resource is an inner RB allocation.

[0214] Example two, please refer to Figure 9b , Figure 9b Figure 2 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is an inner RB allocation, and the second transmission mode corresponding to the second transmission resource is an outer RB allocation.

[0215] Example three, please refer to Figure 9c , Figure 9c Figure 3 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is an inner RB allocation, and the second transmission mode corresponding to the second transmission resource is an edge RB allocation.

[0216] Example four, please refer to Figure 9d , Figure 9d Figure 4 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is an outer RB allocation, and the second transmission mode corresponding to the second transmission resource is an inner RB allocation.

[0217] Example five, please refer to Figure 9e , Figure 9e Figure 5 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is an outer RB allocation, and the second transmission mode corresponding to the second transmission resource is an outer RB allocation.

[0218] Example six, please refer to Figure 9f , Figure 9f Figure 6 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is an outer RB allocation, and the second transmission mode corresponding to the second transmission resource is an edge RB allocation.

[0219] Example seven, please refer to Figure 9g , Figure 9g Figure 7 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is an edge RB allocation, and the second transmission mode corresponding to the second transmission resource is an inner RB allocation.

[0220] Example eight, please refer to Figure 9h , Figure 9h Figure 8 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is an edge RB allocation, and the second transmission mode corresponding to the second transmission resource is an outer RB allocation.

[0221] Example nine, please refer to Figure 9i , Figure 9iFigure 1 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is edge RB allocation, and the second transmission mode corresponding to the second transmission resource is edge RB allocation.

[0222] Secondly, the first CC and the second CC are discontinuous in the frequency domain, i.e. Figure 8 The first CC and the second CC are discontinuous in the frequency domain, i.e.

[0223] Example Ten, please refer to Figure 10a , Figure 10a Figure 1 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is edge RB allocation, and the second transmission mode corresponding to the second transmission resource is edge RB allocation.

[0224] Example Eleven, please refer to Figure 10b , Figure 10b Figure 1 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is edge RB allocation, and the second transmission mode corresponding to the second transmission resource is edge RB allocation.

[0225] Example Twelve, please refer to Figure 10c , Figure 10c Figure 1 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is edge RB allocation, and the second transmission mode corresponding to the second transmission resource is edge RB allocation.

[0226] Example Thirteen, please refer to Figure 10d , Figure 10d Figure 1 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is edge RB allocation, and the second transmission mode corresponding to the second transmission resource is edge RB allocation.

[0227] Example Fourteen, please refer to Figure 10e , Figure 10e Figure 1 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is edge RB allocation, and the second transmission mode corresponding to the second transmission resource is edge RB allocation.

[0228] Example Fifteen, please refer to Figure 10f , Figure 10f Figure 1 is a schematic diagram of a transmission mode in an embodiment of the present application. The first transmission mode corresponding to the first transmission resource is edge RB allocation, and the second transmission mode corresponding to the second transmission resource is edge RB allocation.

[0229] Example Sixteen, please refer to Figure 10g , Figure 10gFig. 1 is a schematic diagram of a transmission mode in an embodiment of the present application. A first transmission resource corresponds to a first transmission mode of edge RB allocation, and a second transmission resource corresponds to a second transmission mode of inner RB allocation.

[0230] Example seventeen, please refer to Figure 10h , Figure 10h Fig. 2 is a schematic diagram of a transmission mode in an embodiment of the present application. A first transmission resource corresponds to a first transmission mode of edge RB allocation, and a second transmission resource corresponds to a second transmission mode of outer RB allocation.

[0231] Example eighteen, please refer to Figure 10i , Figure 10i Fig. 3 is a schematic diagram of a transmission mode in an embodiment of the present application. A first transmission resource corresponds to a first transmission mode of edge RB allocation, and a second transmission resource corresponds to a second transmission mode of edge RB allocation.

[0232] Next, a communication apparatus related to an embodiment of the present application is introduced. The communication apparatus can be used in the terminal device in the foregoing embodiments.

[0233] Figure 11 Fig. 4 is a schematic diagram of a structure of the communication apparatus in an embodiment of the present application. Please refer to Figure 11 , the communication apparatus 1100 includes a transceiver module 1101 and a processing module 1102.

[0234] The communication apparatus 1100 includes a terminal device, which can be the terminal device itself, a component (for example, a chip), a module or a unit in the terminal device, or a module for implementing the function of the terminal device, and the present application does not limit the same.

[0235] The communication apparatus 1100 can be used to execute all or part of the steps performed by the terminal device in the embodiments shown in Figure 6 , and specific details can be referred to the related description in the foregoing embodiments shown in Figure 6 .

[0236] The processing module 1102 is configured to perform data processing. The transceiver module 1101 is configured to implement corresponding communication functions.

[0237] Optionally, the transceiver module 1101 can include a sending module and a receiving module. The sending module is configured to perform the sending operations in the foregoing method embodiments. The receiving module is configured to perform the receiving operations in the foregoing method embodiments.

[0238] It should be noted that the communication apparatus 1100 can include the sending module and not include the receiving module. Alternatively, the communication apparatus 1100 can include the receiving module and not include the sending module. The specific implementation can be determined according to whether the sending action and the receiving action are included in the above-mentioned scheme executed by the communication apparatus 1100.

[0239] Optionally, the communication apparatus 1100 further includes a storage module, which can be used to store instructions and / or data. The processing module 1102 can read the instructions and / or data in the storage module, so that the communication apparatus 1100 implements the foregoing method embodiments.

[0240] The communication apparatus 1100 can be used to perform the actions performed by the terminal device side in the embodiments shown. Figure 6 The processing module 1102 is configured to perform the processing-related operations of the terminal device side in the embodiments shown. Figure 6 The transceiver module 1101 is configured to perform the receiving or sending-related operations of the terminal device side in the embodiments shown. Figure 6

[0241] For example, the communication apparatus 1100 is configured to perform the following solutions.

[0242] The processing module 1102 is configured to determine a first maximum power reduction (MPR) according to a first transmission resource, the first transmission resource being a transmission resource corresponding to a first component carrier (CC), the first transmission resource including one or more resource blocks (RBs), and the first MPR being used to indicate a power reduction value of a first signal carried by the first CC.

[0243] The processing module 1102 is further configured to determine a first transmit power according to the first MPR.

[0244] The transceiver module 1101 is configured to send the first signal carried by the first CC on the first transmission resource according to the first transmit power.

[0245] The processing module 1102 is further configured to determine a second MPR according to a second transmission resource, the second transmission resource being a transmission resource corresponding to a second CC, the second transmission resource including one or more RBs, and the second MPR being used to indicate a power reduction value of a second signal carried by the second CC.

[0246] The processing module 1102 is further configured to determine a second transmit power according to the second MPR.

[0247] The transceiver module 1101 is further configured to send the second signal carried by the second CC on the second transmission resource according to the second transmit power.

[0248] In a possible implementation manner,

[0249] The processing module 1102 is further configured to determine a first transmission mode corresponding to the first transmission resource according to the first transmission resource and the first CC.

[0250] ​The processing module 1102 is further configured to determine the first MPR according to the first transmission mode corresponding to the first transmission resource.

[0251] In a possible implementation, the first transmission mode comprises:

[0252] a first internal RB allocation, a first external RB allocation, or a first edge RB allocation.

[0253] In a possible implementation, the first transmission mode corresponding to the first transmission resource is determined according to the first transmission resource and the first CC, and the determination comprises:

[0254] The first transmission mode is determined according to a first continuous RB number, a first maximum RB number, a first starting RB index, and / or a first rule, wherein:

[0255] The first continuous RB number is a number of continuously allocated RBs of the first transmission resource,

[0256] The first maximum RB number is a maximum number of RBs carried by the first CC,

[0257] The first starting RB index is an index of a starting RB of the first transmission resource,

[0258] The first rule comprises a first boundary value and a second boundary value,

[0259] The first boundary value is determined according to the first continuous RB number,

[0260] The second boundary value is determined according to the first continuous RB number and the first maximum RB number.

[0261] In a possible implementation, the first rule comprises at least one of the following conditions:

[0262] Condition 1: the first starting RB index is greater than or equal to the first boundary value, or the first starting RB index is less than or equal to the second boundary value,

[0263] The first boundary value is a floor of 1 / 2 of the first continuous RB number, the second boundary value is a difference between the first maximum RB number and the first continuous RB number, and the first continuous RB number is less than or equal to a ceiling of 2 / 3 of the first maximum RB number;

[0264] Condition 2: a starting RB of the first transmission resource belongs to a first RB carried by the first CC or a second RB carried by the first CC.

[0265] when the condition 1 is satisfied, determining that the first transmission mode is the first inner RB allocation;

[0266] when the condition 2 is satisfied, determining that the first transmission mode is the first boundary RB allocation;

[0267] when the condition 1 and the condition 2 are not satisfied, determining that the first transmission mode is the first outer RB allocation.

[0268] In a possible implementation, the condition 1 is satisfied when:

[0269] RB start,low,1 ≤RB start,1 ≤RB start,high,1 ,

[0270]

[0271] RB start,high,1 =N RB,1 -L CRB,1 ,

[0272]

[0273] wherein the first boundary value is RB start,low,1 , the second boundary value is RB start,high,1 , the first start RB index is RB start,1 , the first maximum RB number is N RB,1 , and the first continuous RB number is L CRB,1 .

[0274] In a possible implementation, the condition 2 is satisfied when:

[0275] The processing module 1102 is further configured to determine, according to the second transmission resource and the second CC, a second transmission mode corresponding to the second transmission resource.

[0276] The processing module 1102 is further configured to determine the second MPR according to the second transmission mode corresponding to the second transmission resource.

[0277] In a possible implementation, the second transmission mode includes:

[0278] a second inner RB allocation, a second outer RB allocation, or a second edge RB allocation.

[0279] In a possible implementation, determining, according to the second transmission resource and the second CC, the second transmission mode corresponding to the second transmission resource includes:

[0280] determining the second transmission mode according to the second number of consecutive RBs, the second maximum number of RBs, the second starting RB index, and / or the second rule, wherein

[0281] the second number of consecutive RBs is a number of consecutively allocated RBs of the second transmission resource,

[0282] the second maximum number of RBs is a maximum number of RBs carried by the second CC,

[0283] the second starting RB index is an index of a starting RB of the second transmission resource,

[0284] the second rule comprises a third boundary value and a fourth boundary value,

[0285] the third boundary value is determined according to the second number of consecutive RBs,

[0286] the fourth boundary value is determined according to the second number of consecutive RBs and the second maximum number of RBs.

[0287] In a possible implementation, the second rule comprises at least one of the following conditions:

[0288] condition 3: the second starting RB index is greater than or equal to the third boundary value, or the second starting RB index is less than or equal to the fourth boundary value, the third boundary value is equal to 0, the fourth boundary value is equal to the second maximum number of RBs minus the second number of consecutive RBs minus 1 / 2 the second number of consecutive RBs, and the second number of consecutive RBs is less than or equal to 2 / 3 times the second maximum number of RBs rounded up;

[0289] condition 4: a sum of the second starting RB index and the second number of consecutive RBs is greater than or equal to a difference of the second maximum number of RBs minus 2;

[0290] when the condition 3 is met, determining that the second transmission mode is the second internal RB allocation;

[0291] when the condition 4 is met, determining that the second transmission mode is the second boundary RB allocation;

[0292] when the condition 3 and the condition 4 are not met, determining that the second transmission mode is the second external RB allocation.

[0293] In a possible implementation, the condition 3 is met when:

[0294] RB start,low,2 ≤RB start,2 ≤RB start,high,2 ,

[0295] RB start,low,2 = 0,

[0296]

[0297] wherein the third boundary value is RB start,low,2 , the fourth boundary value is RB start,high,2 , the second starting RB index is RB start,2 , the second maximum RB number is N RB,2 , the second continuous RB number is L CRB , 2.

[0298] In a possible implementation, the frequency of the first CC is lower than the frequency of the second CC.

[0299] In a possible implementation, the first CC is continuous with the second CC in the frequency domain.

[0300] In a possible implementation, the first CC and the second CC belong to a same carrier aggregation, CA.

[0301] In a possible implementation, the first MPR is different from the second MPR.

[0302] In a possible implementation, the first CC is transmitted through a first power amplifier, PA, and a first local oscillator, LO;

[0303] the second CC is transmitted through a second PA and a second LO, the second PA being independent of the first PA, and the second LO being independent of the first LO.

[0304] It should be understood that the specific processes in which the modules perform the corresponding processes described above have been described in detail in the method embodiments described above, and thus will not be described again here for the sake of brevity.

[0305] The processing module 1102 in the above embodiments can be implemented by at least one processor or processor-related circuit. The transceiver module 1101 can be implemented by a transceiver or transceiver-related circuit. The transceiver module 1101 can also be referred to as a communication module or a communication interface. The storage module can be implemented by at least one memory.

[0306] The present application also provides another communication device, Figure 12 for another structural diagram of the communication device of the present application. Please refer to Figure 12 , the communication device 1200 includes a processor 1201.

[0307] Optionally, the communication device 1200 further includes a memory 1202.

[0308] Optionally, the communication apparatus 1200 further includes a transceiver 1203.

[0309] In a possible implementation, the processor 1201, the memory 1202 and the transceiver 1203 are connected through a bus respectively, and the memory 1202 stores computer instructions.

[0310] In a possible implementation, when the communication apparatus 1200 includes a terminal device, or a component (for example, a chip), a module or a unit in the terminal device, the communication apparatus 1200 can be used to execute steps performed by the terminal device in the method embodiments, and the related description can be referred to in the method embodiments.

[0311] Optionally, the foregoing Figure 11 The processing module 1102 in the embodiment shown can be the processor 1201, the foregoing Figure 11 The transceiving module 1101 in the embodiment shown can be the transceiver 1202. Alternatively, the foregoing Figure 11 The processing module 1102 in the embodiment shown can be the processor 1201, the foregoing Figure 11 The transceiving module 1101 in the embodiment shown can be the transceiver 1202.

[0312] The embodiment of the present application further provides a communication apparatus. Figure 13 Another structural diagram of the communication apparatus of the embodiment of the present application is shown in FIG. 13. Please refer to FIG. 13. Figure 13 The communication apparatus 1300 can be a terminal device in the method embodiments, or a component (for example, a chip), a module or a unit of the terminal device in the method embodiments. The communication apparatus 1300 can be used to execute operations performed by the terminal device in the method embodiments.

[0313] The processor is mainly used for processing data or signals, and controlling the communication apparatus, executing a corresponding software program, processing data of the software program and the like.

[0314] It should be noted that the signal processing algorithm of the processor has weak capability and cannot perform complex signal processing algorithm.

[0315] The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for conversion between a baseband signal and a radio frequency signal, and processing of the radio frequency signal.

[0316] The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves.

[0317] Optionally, the communication apparatus 1300 further includes an input and output apparatus, for example, a touch screen, a display screen, a keyboard and the like, which are mainly used for receiving data input by a user and outputting data to the user.

[0318] When data needs to be sent, the processor outputs a baseband signal to the radio frequency circuit after baseband processing of the data to be sent, and the radio frequency circuit converts the baseband signal into a radio frequency signal and sends the radio frequency signal to the outside in the form of an electromagnetic wave through an antenna. When data is sent to the communication device, the radio frequency circuit receives a radio frequency signal through an antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.

[0319] For ease of illustration, Figure 13 Only one memory and one processor are shown in the communication device. In actual products of the communication device, there can be one or more processors and one or more memories. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be independent of the processor or integrated with the processor, and the embodiments of the present application do not limit this.

[0320] In the embodiments of the present application, the antenna and the radio frequency circuit with the transceiving function can be regarded as a transceiving unit of the communication device, and the processor with the processing function can be regarded as a processing unit of the communication device. As shown in Figure 13 The communication device 1300 includes a transceiving unit 1310 and a processing unit 1320. The transceiving unit can also be referred to as a transceiver, a transceiver, a transceiving device, etc. The processing unit can also be referred to as a processor, a processing board, a processing module, a processing device, etc.

[0321] Optionally, the devices for implementing the receiving function in the transceiving unit 1310 can be regarded as a receiving unit, and the devices for implementing the sending function in the transceiving unit 1310 can be regarded as a sending unit, that is, the transceiving unit 1310 includes a receiving unit and a sending unit. The transceiving unit can also be referred to as a transceiver, a transceiver, or a transceiving circuit, etc. The receiving unit can also be referred to as a receiver, a receiver, or a receiving circuit, etc. The sending unit can also be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0322] It should be understood that the transceiving unit 1310 is used to perform the sending operation and the receiving operation of the terminal device in the above-mentioned method embodiments, and the processing unit 1220 is used to perform other operations of the terminal device in the above-mentioned method embodiments except the transceiving operation.

[0323] When the communication device is a chip, the chip includes a transceiving unit and a processing unit. The transceiving unit can be an input / output circuit or a communication interface; the processing unit is a processor or a microprocessor integrated on the chip or an integrated circuit or a logic circuit. In the above-mentioned method embodiments, the sending operation corresponds to the output of the input / output circuit, and the receiving operation corresponds to the input of the input / output circuit.

[0324] The embodiments of the present application also provide a terminal device. Figure 14This is a schematic diagram of one structure of a terminal device in an embodiment of this application. Please refer to [link / reference]. Figure 14 The terminal device 1400 can be the terminal device in the above method embodiments, or it can be a component (e.g., a chip), module, or unit of the terminal device in the above method embodiments. The terminal device 1400 can be used to perform the operations performed by the terminal device in the above method embodiments.

[0325] The terminal device 1400 includes: a first power amplifier and a first local oscillator, as well as a second power amplifier and a second local oscillator, wherein the first local oscillator provides a first local oscillator signal to the first power amplifier, and the first power amplifier transmits a first signal on a first component carrier based on the first local oscillator signal; the second local oscillator provides a second local oscillator signal to the second power amplifier, and the second power amplifier transmits a second signal on a second component carrier based on the second local oscillator signal.

[0326] This application also provides a communication system, which includes a terminal device for performing... Figure 6 The embodiments shown represent all or part of the steps performed by the terminal device.

[0327] This application also provides another communication system, which includes a terminal device and an access network device, wherein the terminal device is used to perform... Figure 6 In the embodiments shown, the terminal device performs all or part of the steps, and the access network device configures the first component carrier and the second component carrier to the terminal device.

[0328] This application also provides a computer program product including computer instructions, which, when run on a computer, causes the computer to perform the above-described actions. Figure 6 The method of the embodiment shown.

[0329] This application also provides a computer-readable storage medium, including computer instructions, which, when executed on a computer, cause the computer to perform the above-described actions. Figure 6 The method of the embodiment shown.

[0330] This application also provides a chip device, including a processor, for calling a computer program or computer instructions stored in a memory, so that the processor executes the above-described... Figure 6 The method of the embodiment shown.

[0331] Optionally, the processor is coupled to the memory via an interface.

[0332] Optionally, the chip device may also include a memory in which computer programs or computer instructions are stored.

[0333] The processor mentioned in any of the above can be a general central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the above Figure 6 The memory mentioned in any of the above can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), etc.

[0334] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0335] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0336] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0337] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially contribute to the part or the whole or part of the technical solutions can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application.

[0338] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that, The method includes: Based on the first transmission resource, a first maximum power back-off (MPR) is determined. The first transmission resource is the transmission resource corresponding to the first component carrier (CC). The first transmission resource includes one or more resource blocks (RBs). The first MPR is used to indicate the power back-off value of the first signal carried by the first CC. Based on the first MPR, determine the first transmit power; Based on the first transmission power, the first signal carried by the first CC is transmitted on the first transmission resource; Based on the second transmission resource, a second MPR is determined. The second transmission resource is the transmission resource corresponding to the second CC. The second transmission resource includes one or more RBs. The second MPR is used to indicate the power back-off value of the second signal carried by the second CC. Determine the second transmit power based on the second MPR; Based on the second transmit power, the second signal carried by the second CC is transmitted on the second transmission resource.

2. The method according to claim 1, characterized in that, Determining the first MPR based on the first transmission resource includes: Based on the first transmission resource and the first CC, determine the first transmission mode corresponding to the first transmission resource; The first MPR is determined based on the first transmission mode corresponding to the first transmission resource.

3. The method according to claim 2, characterized in that, The first transmission mode includes: First internal RB allocation, first external RB allocation, or first edge RB allocation.

4. The method according to claim 2 or 3, characterized in that, Determining the first transmission mode corresponding to the first transmission resource based on the first transmission resource and the first CC includes: The first transmission mode is determined based on the first consecutive RB count, the first maximum RB count, the first starting RB index, and / or, a first rule, wherein... The first consecutive RB number is the number of RBs consecutively allocated to the first transmission resource. The first maximum number of RBs is the maximum number of RBs carried by the first CC. The first starting RB index is the index of the starting RB of the first transmission resource. The first rule includes: a first boundary value and a second boundary value. The first boundary value is determined based on the number of consecutive RBs. The second boundary value is determined based on the first consecutive RB number and the first maximum RB number.

5. The method according to claim 4, characterized in that, The first rule includes at least one of the following conditions: Condition 1: The first starting RB index is greater than or equal to the first boundary value, or the first starting RB index is less than or equal to the second boundary value. The first boundary value is 1 / 2 of the first consecutive RB number rounded down, and the second boundary value is the difference between the first maximum RB number and the first consecutive RB number, where the first consecutive RB number is less than or equal to 2 / 3 of the first maximum RB number rounded up. Condition 2: The starting RB of the first transmission resource belongs to the first RB carried by the first CC or the second RB carried by the first CC; When condition 1 is met, the first transmission mode is determined to be the first internal RB allocation; When condition 2 is met, the first transmission mode is determined to be the first boundary RB allocation; When conditions 1 and 2 are not met, the first transmission mode is determined to be the first external RB allocation.

6. The method according to claim 5, characterized in that, Condition 1 is satisfied: RBB start，low,1 ≤RB start，1 ≤RB start,high,1 , RB start，high，1 =N RB，1 -L CRB,1 , Wherein, the first boundary value is RB start，low,1 The second boundary value is RB start,high,1 The first starting RB index is RB start，1 The first maximum number of RBs is N RB,1 The number of the first consecutive RBs is L CRB,1 .

7. The method according to any one of claims 1-6, characterized in that, Determining the second MPR based on the second transmission resource includes: Based on the second transmission resource and the second CC, determine the second transmission mode corresponding to the second transmission resource; The second MPR is determined based on the second transmission mode corresponding to the second transmission resource.

8. The method according to claim 7, characterized in that, The second transmission mode includes: Second internal RB allocation, second external RB allocation, or second edge RB allocation.

9. The method according to claim 7 or 8, characterized in that, Based on the second transmission resource and the second CC, the second transmission mode corresponding to the second transmission resource is determined, including: The second transmission mode is determined based on the second consecutive RB number, the second maximum RB number, the second starting RB index, and / or, a second rule, wherein... The second consecutive RB number is the number of RBs consecutively allocated to the second transmission resource. The second maximum number of RBs is the maximum number of RBs carried by the second CC. The second starting RB index is the index of the starting RB of the second transmission resource. The second rule includes: a third boundary value and a fourth boundary value. The third boundary value is determined based on the number of the second consecutive RBs. The fourth boundary value is determined based on the second consecutive RB number and the second maximum RB number.

10. The method according to claim 9, characterized in that, The second rule includes at least one of the following conditions: Condition 3: The second starting RB index is greater than or equal to the third boundary value, or the second starting RB index is less than or equal to the fourth boundary value, the third boundary value is equal to 0, the fourth boundary value is equal to the second maximum RB quantity minus the second consecutive RB quantity minus 1 / 2 of the second consecutive RB quantity rounded down, and the second consecutive RB quantity is less than or equal to 2 / 3 times the second maximum RB quantity rounded up. Condition 4: The sum of the second starting RB index and the second consecutive RB count is greater than or equal to the difference between the second maximum RB count and 2. When condition 3 is met, the second transmission mode is determined to be the second internal RB allocation; When condition 4 is met, the second transmission mode is determined to be the second boundary RB allocation; When conditions 3 and 4 are not met, the second transmission mode is determined to be the second external RB allocation.

11. The method according to claim 10, characterized in that, Condition 3 is satisfied: RB start，low,2 ≤RB start，2 ≤RB start，high,2 , RB start，low，2 =0, Wherein, the third boundary value is RB start，low,2 The fourth boundary value is RB. start，high,2 The second starting RB index is RB start,2 The second maximum number of RBs is N RB,2 The number of the second consecutive RBs is L CRB,2 .

12. The method according to any one of claims 1-11, characterized in that, The frequency of the first CC is lower than the frequency of the second CC.

13. The method according to any one of claims 1-12, characterized in that, The first CC is continuous with the second CC in the frequency domain.

14. The method according to any one of claims 1-13, characterized in that, The first CC and the second CC belong to the same carrier aggregation (CA).

15. The method according to any one of claims 1-14, characterized in that, The first MPR is different from the second MPR.

16. The method according to any one of claims 1-15, characterized in that, The first CC is transmitted through the first power amplifier PA and the first local oscillator LO; The second CC is transmitted through the second PA and the second LO. The second PA is independent of the first PA, and the second LO is independent of the first LO.

17. A communication device, characterized in that, The communication device includes a processor for executing a computer program or computer instructions stored in a memory to perform the method as described in any one of claims 1 to 16.

18. The communication device according to claim 17, characterized in that, The communication device includes: a first power amplifier PA and a first local oscillator LO, as well as a second PA and a second LO, wherein the second PA is independent of the first PA and the second LO is independent of the first LO; The first CC is transmitted through the first PA and the first LO; The second CC is transmitted via the second PA and the second LO.

19. The apparatus according to claim 17 or 18, characterized in that, The device also includes a transceiver, and the processor and the transceiver are interconnected via a line.

20. The communication device according to any one of claims 17-19, characterized in that, The communication device is a terminal device.

21. A communication device, characterized in that, The communication device includes a transceiver module for performing the transceiver operation of the method as described in any one of claims 1 to 16.

22. The communication device according to claim 21, characterized in that, The communication device further includes a processing module for processing operations of the method as described in any one of claims 1 to 16.

23. A computer-readable storage medium, characterized in that, It stores a computer program thereon, which, when executed by the device, causes the device to perform the method as described in any one of claims 1 to 16.

24. A computer program product, characterized in that, When the computer program product is run on a computer, the computer performs the method as described in any one of claims 1 to 16.

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