CN116156653A

CN116156653A - Communication method and communication device

Info

Publication number: CN116156653A
Application number: CN202111347016.6A
Authority: CN
Inventors: 苏桐; 官磊; 李秉肇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2023-05-23

Abstract

The application discloses a communication method and a communication device, wherein the method comprises the following steps: the terminal device receives configuration information from the network device, receives a PDCCH from the network device on the first frequency domain resource or the second frequency domain resource, and receives a PDSCH from the network device according to the received PDCCH. The configuration information indicates a first frequency domain resource and a second frequency domain resource, the first frequency domain resource and the second frequency domain resource are activated simultaneously, and the CP type of the time domain symbol corresponding to the first frequency domain resource is different from the CP type of the time domain symbol corresponding to the second frequency domain resource. For example, the CP of the time domain symbol corresponding to the first frequency domain resource is NCP, and the CP of the time domain symbol corresponding to the second frequency domain resource is ECP. Because ECP compares NCP, the time domain sign in a time slot is longer, so can reduce in the single frequency network SFN, because the different time delay that a plurality of network devices arrive at terminal equipment causes the influence that the terminal equipment received data.

Description

Communication method and communication device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a communication method and a communication device.

Background

The network device may send information to a plurality of terminal devices in a multicast manner. The multicast scheme requires that multiple terminal devices receive information on the same time-frequency resource. Since the network device configures bandwidth parts (BWP) for a plurality of terminal devices independently, the network device may configure the same frequency domain resources (which may be referred to as common frequency domain resources (common frequency resource, CFR) for each terminal device for receiving information transmitted by the network device in a multicast manner.

In a possible scenario, the network device transmits information in a multicast manner over a single frequency network (single frequency resource, SFN). Because the distances between the network devices and the terminal devices are different in the SFN, the time for the data of the network devices to reach the terminal devices is also different, and the position of the terminal devices transmitting the information in the network devices can not correctly receive the information due to time delay expansion, so that the receiving of the information by the terminal devices is affected.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for reducing the influence of different time delays of a plurality of network devices reaching terminal equipment on data receiving of the terminal equipment in SFN.

In a first aspect, a communication method is provided, which may be performed by a first communication device, which may be a communication apparatus or a communication device, such as a chip system, capable of supporting the functions required by the communication apparatus to implement the method. The following describes an example in which the communication device is a terminal device. The method comprises the following steps:

the terminal device receives configuration information from the network device, receives a physical downlink control channel (physical downlink control channel, PDCCH) from the network device on the first frequency domain resource or the second frequency domain resource, and receives a physical downlink shared channel (physical downlink shared channel, PDSCH) from the network device according to the received PDCCH. The configuration information indicates a first frequency domain resource and a second frequency domain resource, where a CP type of a time domain symbol corresponding to the first frequency domain resource is different from a Cyclic Prefix (CP) type of a time domain symbol corresponding to the second frequency domain resource, for example, the CP of the time domain symbol corresponding to the first frequency domain resource is a normal cyclic prefix (normal cyclic prefix, NCP), and the CP of the time domain symbol corresponding to the second frequency domain resource is an extended cyclic prefix (extend cyclic prefix, ECP). The first frequency domain resource is used for transmitting information scrambled by a cell radio network temporary identifier (cell-radio network temporary identifier, C-RNTI) or a first group radio network temporary identifier (G-radio network temporary identifier), and the second frequency domain resource is used for transmitting information scrambled by a second G-RNTI, the first G-RNTI being different from the second G-RNTI. The PDCCH is used for indicating the resource of the PDSCH, and the resource of the PDSCH belongs to a first frequency domain resource or a second frequency domain resource in a frequency domain.

Accordingly, in a second aspect, there is provided a communication method executable by a second communication device, which may be a communication apparatus or a communication device capable of supporting the functions required for the communication apparatus to implement the method, such as a chip system. The following describes an example in which the communication device is a network device. The method comprises the following steps:

the network device transmits the configuration information, transmits the PDCCH on the first frequency domain resource or the second frequency domain resource, and transmits the PDSCH. The configuration information indicates a first frequency domain resource and a second frequency domain resource, a CP type of a time domain symbol corresponding to the first frequency domain resource is different from a CP type of a time domain symbol corresponding to the second frequency domain resource, for example, the CP of the time domain symbol corresponding to the first frequency domain resource is NCP, and the CP of the time domain symbol corresponding to the second frequency domain resource is ECP), the first frequency domain resource and the second frequency domain resource are activated simultaneously, the first frequency domain resource is used for transmitting C-RNTI or first G-RNTI scrambled information, the second frequency domain resource is used for transmitting second G-RNTI scrambled information, and the first G-RNTI is different from the second G-RNTI. The PDCCH is used for indicating the resource of the PDSCH, and the resource of the PDSCH belongs to a first frequency domain resource or a second frequency domain resource in a frequency domain.

In the embodiment of the present application, CP types of time domain symbols corresponding to the first frequency domain resource and the second frequency domain resource that are activated simultaneously are different. For example, the CP of the time domain symbol corresponding to the first frequency domain resource is NCP, and the CP of the time domain symbol corresponding to the second frequency domain resource is ECP. With the scheme provided by the embodiments of the present application in SFN, for example, the first frequency domain resource may be used for unicast or multicast transmission, and the second frequency domain resource may be used for multicast or broadcast transmission. Since the ECP has a longer duration of time domain symbols within one slot than the NCP, the impact on the terminal device reception data due to different delays of arrival of multiple network devices at the terminal device in the SFN can be reduced.

In a possible implementation manner of the first aspect or the second aspect, when the first condition is satisfied, the resource of the PDSCH belongs to the first frequency domain resource in the frequency domain, and the first condition satisfies at least one of the following 1) -3). 1) The radio network temporary identity (radio network temporary identifier, RNTI) of the scrambled PDSCH is a C-RNTI. 2) The CP of the time domain symbol occupied by the PDSCH, which is not received through the SFN, is NCP. 3) The RNTI of the scrambled PDSCH is the first G-RNTI.

Accordingly, when the second condition is satisfied, the resources of the PDSCH belong to the second frequency domain resources in the frequency domain, wherein the second condition satisfies at least one of the following 1) -3). 1) The RNTI of the scrambled PDSCH is the second G-RNTI). 2) The CP of the time domain symbol occupied by the PDSCH is an ECP. 3) PDSCH is received through SFN.

That is, the embodiment of the present application may indicate whether the PDSCH is located in the first frequency domain resource or the second frequency domain resource by scrambling the RNTI of the PDSCH, the CP of the time domain symbol occupied by the PDSCH, or whether the PDSCH is transmitted through the SFN. For example, the C-RNTI is used to identify one-to-one transmission of the network device to the terminal device, and the G-RNTI is used to identify one-to-many transmission of the network device to the terminal device, so that the PDSCH may be indirectly indicated as being located in the first frequency domain resource or the second frequency domain resource by scrambling the RNTI of the PDSCH. For another example, NCP-based time domain symbols may be used for one-to-one transmission from a network device to a terminal device, and ECP-based time domain symbols may be used for one-to-many transmission from a network device to a terminal device, and thus, a CP through a PDSCH may indirectly indicate that the PDSCH is located on the first frequency domain resource or the second frequency domain resource. For example, since the CP of the PDSCH transmitted by the SFN is the ECP and the CP of the PDSCH not transmitted by the SFN is the NCP, it is also possible to indicate whether the PDSCH is transmitted by the SFN or not, and thus, the PDSCH is located in the first frequency domain resource or the second frequency domain resource.

In a possible implementation manner of the first aspect or the second aspect, the PDCCH is used to indicate at least one of the following 1) -3). 1) The RNTI type of the scrambled PDSCH. 2) The CP type of the time domain symbol occupied by the PDSCH includes an NCP type or an ECP type. 3) Whether the PDSCH is a PDSCH transmitted in the SFN. The scheme may indicate whether the PDSCH is located in the first frequency domain resource or the second frequency domain resource by scrambling an RNTI of the PDSCH, a CP of a time domain symbol occupied by the PDSCH, or whether the PDSCH is transmitted through the SFN. The method for indicating the PDSCH to be located in the first frequency domain resource or the second frequency domain resource is not limited, and the embodiment of the application is more flexible.

In a possible implementation manner of the first aspect or the second aspect, the PDCCH is located in a first frequency domain resource, an RNTI of the scrambled PDCCH is a C-RNTI, and a CP of a time domain symbol occupied by the PDCCH is an NCP. In the scheme, the PDSCH transmitted in a multicast mode can be scheduled through the PDCCH transmitted in a unicast mode, and the energy consumption of blind detection of the PDCCH by the terminal equipment can be reduced.

Or the PDCCH is positioned in a first frequency domain resource, the RNTI of the scrambled PDCCH is a first G-RNTI, and the CP of a time domain symbol occupied by the PDCCH is NCP. In this scheme, PDSCH transmitted in multicast may be scheduled through PDCCH transmitted in multicast.

Still alternatively, in a possible implementation manner of the first aspect or the second aspect, the PDCCH is located in a second frequency domain resource, an RNTI of the scrambled PDCCH is a second G-RNTI, and a CP of a time domain symbol occupied by the PDCCH is an ECP. The scheme can be suitable for PDSCH which is transmitted in multicast by PDCCH scheduling of unicast transmission in SFN, and can reduce the energy consumption of blind detection of PDCCH by terminal equipment.

In a possible implementation manner of the first aspect or the second aspect, the priority of blind detection of the PDCCH in the first frequency domain resource is higher than the priority of blind detection of the PDCCH in the second frequency domain resource. It can be understood that the terminal device cannot detect the PDCCH with the time domain symbol CP being NCP and the PDCCH with the time domain symbol CP being ECP at the same time, and by using the scheme provided by the embodiment of the present application to preferentially detect the PDCCH with the time domain symbol CP being NCP, the detected PDCCH with the time domain symbol CP being NCP can schedule the PDSCH transmitted by multicast or the PDSCH transmitted by unicast, so that resources consumed when the device performs busy detection can be saved.

In a third aspect, embodiments of the present application provide a communication device, where the communication device may have a function of implementing the behavior in the method example of the first aspect, and the beneficial effects may be referred to the description of the first aspect and are not repeated herein. The communication means may be the first access network device of the first aspect or the communication means may be a device, such as a chip or a system-on-chip, capable of supporting the functionality of the first access network device of the first aspect required to implement the method provided by the first aspect.

In one possible design, the communication device comprises corresponding means (means) or modules for performing the method of the first aspect. For example, the communication device: including a processing unit (sometimes also referred to as a processing module) and/or a transceiver unit (sometimes also referred to as a transceiver module). These units (modules) may perform the corresponding functions in the method examples of the first aspect described above. Illustratively, the communication device includes a transceiver module and a processing module. The transceiver module is configured to receive configuration information from a network device, the configuration information indicating a first frequency domain resource and a second frequency domain resource. The CP type of the time domain symbol corresponding to the first frequency domain resource is different from the CP type of the time domain symbol corresponding to the second frequency domain resource, the CP type includes an NCP type or an ECP type, and the first frequency domain resource and the second frequency domain resource are activated simultaneously. The transceiver module is further configured to receive a PDCCH from the network device on the first frequency domain resource or the second frequency domain resource, where the PDCCH is used to indicate a resource of a PDSCH, and the resource of the PDSCH belongs to the first frequency domain resource or the second frequency domain resource in a frequency domain. The processing module is used for determining to receive the PDSCH from the network device on the first frequency domain resource or the second frequency domain resource according to the PDCCH.

In a fourth aspect, embodiments of the present application provide a communication device, where the communication device may have a function of implementing the behavior in the method example of the second aspect, and the beneficial effects may be referred to the description of the second aspect and are not repeated herein. The communication means may be a core network device or a second access network device in the second aspect, or the communication means may be a device, such as a chip or a system of chips, capable of supporting the functions required by the core network device or the second access network device in the second aspect to implement the method provided in the second aspect.

In one possible design, the communication device comprises corresponding means (means) or modules for performing the method of the second aspect. For example, the communication device: including a processing unit (sometimes also referred to as a processing module) and/or a transceiver unit (sometimes also referred to as a transceiver module). These units (modules) may perform the respective functions in the above-described second aspect method example. Illustratively, the communication device includes a transceiver module and a processing module. The processing module is configured to determine configuration information, where the configuration information indicates a first frequency domain resource and a second frequency domain resource, a CP type of a time domain symbol corresponding to the first frequency domain resource is different from a CP type of a time domain symbol corresponding to the second frequency domain resource, where the CP type includes an NCP type or an ECP type, and the first frequency domain resource and the second frequency domain resource are activated simultaneously. The transceiver module is configured to transmit the configuration information, and transmit PDCCH and PDSCH on the first frequency domain resource or the second frequency domain resource. The PDCCH is used for indicating the resource of the PDSCH, and the resource of the PDSCH belongs to a first frequency domain resource or a second frequency domain resource on a frequency domain.

In a fifth aspect, embodiments of the present application provide a communication device, which may be the communication device in the third aspect or the fourth aspect of the above embodiments, or a chip system provided in the communication device in the third aspect or the fourth aspect. The communication device comprises a communication interface and a processor, and optionally a memory. Wherein the memory is for storing a computer program or instructions or data, the processor being coupled to the memory, the communication interface, when the processor reads the computer program or instructions or data, causes the communication device to perform the method as described in the first or second aspect.

In a sixth aspect, embodiments of the present application provide a communication device that includes an input-output interface and a logic circuit. The input-output interface is used for inputting and/or outputting information. The logic circuit is for performing the method as described in the first or second aspect.

In a seventh aspect, embodiments of the present application provide a chip system, where the chip system includes a processor and may further include a memory and/or a communication interface, for implementing the method in the first aspect or the second aspect. In one possible implementation, the chip system further includes a memory for storing program instructions and/or data. The chip system may be formed of a chip or may include a chip and other discrete devices.

In an eighth aspect, embodiments of the present application provide a communication system including the communication apparatus in the third aspect and the communication apparatus in the fourth aspect. Alternatively, the communication system includes the communication apparatus in the third aspect and the communication apparatus for performing the method of the second aspect in the fifth aspect. Alternatively, the communication system includes the communication apparatus in the fourth aspect and the communication apparatus for performing the method of the second aspect in the fifth aspect. The communication system may perform the respective functions in the examples of the methods of the first and second aspects described above.

In a ninth aspect, the present application provides a computer readable storage medium storing a computer program which, when executed, implements the method of the first or second aspect described above.

In a tenth aspect, there is provided a computer program product comprising: computer program code which, when run, causes the method of the first or second aspect described above to be performed.

Advantageous effects of the above third to tenth aspects and implementations thereof reference may be made to the description of advantageous effects of any of the above first to second aspects and possible implementations of any of the first to second aspects.

Drawings

Fig. 1 is a schematic diagram of coexistence of unicast PDSCH and multicast PDSCH;

FIG. 2 is a schematic diagram of a CFR provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a network architecture applicable to the embodiment of the present application;

fig. 4 is a schematic flow chart of a communication method according to an embodiment of the present application;

fig. 5 is a schematic diagram of a network device scheduling PDSCH transmitted in unicast or multicast with PDCCH transmitted in unicast according to an embodiment of the present application;

fig. 6 is another schematic diagram of a network device scheduling PDSCH transmitted in unicast or multicast with PDCCH transmitted in unicast according to an embodiment of the present application;

fig. 7 is a schematic diagram of a network device scheduling PDSCH transmitted by multicast with PDCCH transmitted by multicast according to an embodiment of the present application;

fig. 8 is another schematic diagram of a network device scheduling PDSCH transmitted by multicast with PDCCH transmitted by multicast according to an embodiment of the present application;

fig. 9 is a schematic diagram of a network device transmitting PDSCH in a multicast manner in an SFN according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another communication device according to an embodiment of the present application;

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

Fig. 13 is an exemplary structural schematic diagram of another communication device according to an embodiment of the present application.

Detailed Description

In order to facilitate understanding of the technical solutions provided by the embodiments of the present application, first, some technical terms related to the embodiments of the present application are explained.

1) A terminal device, which may be a User Equipment (UE), is sometimes referred to as a terminal, access station, UE station, remote station, wireless communication device, or user equipment, among others. The terminal device is a device having a wireless transceiving function, and can transmit a signal to or receive a signal from the network device. The terminal device is used for connecting people, objects, machines and the like, and can be widely used in various scenes, including but not limited to the following scenes: cellular communication, device-to-device (D2D), vehicle-to-everything (vehicle to everything, V2X), machine-to-machine/machine-to-machine-type communications, M2M/MTC), internet of things (internet of things, ioT), virtual Reality (VR), augmented reality (augmented reality, AR), industrial control (industrial control), unmanned driving (self driving), remote medical (remote media), smart grid (smart grid), smart furniture, smart office, smart wear, smart transportation, smart city (smart city), drone, robot, and other end devices.

The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a VR terminal, an AR terminal, a wireless terminal in an industrial control (industrial control), a wireless terminal in an unmanned aerial vehicle (self driving), a smart speaker in an IoT network, a wireless terminal device in telemedicine, a wireless terminal device in a smart grid, a wireless terminal device in transportation security, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc. By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device or an intelligent wearable device, and is a generic name for intelligently designing daily wear and developing wearable devices, such as glasses, gloves, watches, clothes, shoes, and the like, by applying wearable technology.

The terminal device may also include a relay. Or it is understood that all that is capable of data communication with a base station can be seen as a terminal device. While the various terminal devices described above, if located on a vehicle (e.g., placed in a vehicle or mounted in a vehicle), may be considered as in-vehicle terminal devices, for example, also referred to as in-vehicle units (OBUs). In addition, in the embodiment of the present application, the terminal device may refer to a device for implementing a function of the terminal, or may be a device capable of supporting the terminal device to implement the function, for example, a chip system, and the device may be installed in the terminal device. For example, the terminal device may also be a vehicle detector. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices. In the technical solution provided in the embodiments of the present application, the device for implementing the function of the terminal is a terminal device, which is described in the embodiments of the present application as an example.

2) The network device is AN access device that a terminal device accesses to the mobile communication system in a wireless manner, and includes AN Access Network (AN) device, for example, a base station. The network device may also refer to a device that communicates with the terminal device over the air. The network device may include an evolved base station (evolutional Node B) in an LTE system or long term evolution advanced (long term evolution-advanced, LTE-a), which may be referred to simply as an eNB or e-NodeB. An eNB is a device deployed in a radio access network to satisfy the fourth generation mobile communication technology (the fourth generation, 4G) standard to provide a wireless communication function for terminal devices. The network device may also be a new radio controller (new radio controller, NR controller), may be a gNode B, gNB in a 5G system, may be a centralized network element (centralized unit), may be a new radio base station, may be a remote radio module, may be a micro base station (also referred to as a small station), may be a relay (relay), may be a distributed network element (distributed unit), may be a macro base station in various forms, may be a transmission receiving point (transmission reception point, TRP), a transmission measurement function (transmission measurement function, TMF) or a transmission point (transmission point, TP), or any other radio access device, and embodiments of the present application are not limited thereto. The network devices may also include radio network controllers (radio network controller, RNC), node bs (Node bs, NB), base station controllers (base station controller, BSC), base transceiver stations (base transceiver station, BTS), home base stations (e.g., home evolved NodeB, or home Node bs, HNB), baseband units (BBU), or wireless fidelity (wireless fidelity, wifi) Access Points (APs), etc. The specific technology and specific device configuration used by the access network device in the embodiments of the present application are not limited. The access network device may correspond to an eNB in a 4G system and to a gNB in a 5G system.

In addition, the base station in the embodiment of the present application may include a Centralized Unit (CU) and a Distributed Unit (DU), and a plurality of DUs may be centrally controlled by one CU. The CU and the DU may be divided according to functions of protocol layers of a wireless network that they have, for example, functions of a packet data convergence protocol (packet data convergence protocol, PDCP) layer and above are provided at the CU, and functions of protocol layers below PDCP, for example, functions of a radio link control (radio link control, RLC) layer and a medium access control (medium access control, MAC) layer, etc. are provided at the DU. It should be noted that this division of protocol layers is only an example, and may be divided at other protocol layers. The radio frequency device may be remote, not placed in the DU, or integrated in the DU, or partially remote and partially integrated in the DU, which is not limited in any way by the embodiments of the present application. In addition, in some embodiments, a Control Plane (CP) and a User Plane (UP) of the CU may be implemented separately and separated into different entities, which are a control plane CU entity (CU-CP entity) and a user plane CU entity (CU-UP entity), respectively. In this network architecture, the CU generated signaling may be transmitted to the terminal device through a DU, or the UE generated signaling may be transmitted to the CU through a DU. The DU may be passed through to the UE or CU directly through the protocol layer encapsulation without parsing the signaling. In this network architecture, the CU is divided into access network devices on the radio access network (radio access network, RAN) side, and the CU may be divided into access network devices on the Core Network (CN) side, which is not limited in this application.

In the embodiment of the present application, the means for implementing the function of the access network device may be the access network device, or may be a means capable of supporting the access network device to implement the function, for example, a chip system, and the apparatus may be installed in the access network device. In the technical solution provided in the embodiments of the present application, taking the device for implementing the function of the access network device as an example of the access network device, the technical solution provided in the embodiments of the present application is described.

3) In a New Radio (NR) system, there are various time units, for example, a time unit is formed of one or more symbols, for example, a time unit may refer to a slot (slot), or a subframe, or a mini-slot. In the embodiment of the present application, an example is taken that the time unit is one time slot. Unless otherwise specified, the symbols are all time domain symbols, where the time domain symbols may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols. It can be appreciated that there are 14 symbols in one slot (slot) based on NCP, and there are 12 OFDM symbols in one slot based on ECP. With the same subcarrier spacing, the duration of one slot based on ECP and one slot based on NCP are the same. The number of OFDM symbols in one slot becomes small, that is, one OFDM symbol becomes long in the time domain, and it is considered that a CP becomes long for a period of time.

4) A bandwidth part (BWP or BP) refers to a section of continuous frequency domain resources in the frequency domain. The bandwidth portion may also be referred to as a sub-band, sub-band (subband) bandwidth, narrowband or narrowband (narrow band) bandwidth, or may have other names, and the names of the bandwidth portion are not limited in this embodiment of the present application, and for simplicity, the bandwidth portion is referred to herein as BWP as an example. BWP is relative to the carrier bandwidth (Carrier Bandwidth), i.e. BWP is part or all of the carrier bandwidth. The carrier bandwidth is also called as system bandwidth, and refers to the frequency domain resource available for transmission in one cell (e.g., a serving cell). BWP can be classified into an upstream BWP and a downstream BWP. The uplink BWP is used for uplink transmission by the terminal device, and the bandwidth of the uplink BWP may exceed the transmission bandwidth capability of the terminal device. The downlink BWP is used for downlink reception by the terminal device, and the bandwidth of the downlink BWP may exceed the reception bandwidth capability of the terminal device. In this embodiment of the present application, the bandwidth capability of the terminal device may be a channel bandwidth supported by the terminal device, or a maximum channel bandwidth supported by the terminal device, or a number of Resource Blocks (RBs) supported by the terminal device, or a maximum number of resource blocks supported by the terminal device. One terminal device may be configured with one or more BWP. Within the same time period, the terminal device can only operate one BWP therein, which BWP is also called active BWP of the terminal device. The terminal device does not perform uplink transmission or downlink reception except for the activation of BWP. When the terminal device is configured with a plurality of BWP, the terminal device may switch between the plurality of BWP.

5) BWP configuration the network device may configure up to 4 downstream BWP for one terminal device on one element carrier by means of high-level parameters BWP-Downlink or BWP-Downlink supported. For each downlink BWP, the CP type of the time domain symbol corresponding to the BWP is configured, for example, the CP of the time domain symbol corresponding to the BWP is configured to be NCP, and the CP of the time domain symbol used for data reception and scheduling in the BWP is configured to be NCP. For another example, if the CP configuring the time domain symbol corresponding to the BWP is an ECP, the CP configuring the time domain symbol used for data reception and scheduling in the BWP is an ECP. It may be appreciated that the CP of the time domain symbol corresponding to the BWP may be a CP of the time domain symbol occupied by the data transmission performed in the frequency domain resource corresponding to the BWP, for example, a CP of the time domain symbol occupied by the PDCCH transmitted in the BWP, or a CP of the time domain symbol occupied by the PDSCH transmitted in the BWP.

The network device may configure a dedicated BWP (also referred to as a dedicated BWP) for the terminal device, it being noted that the dedicated BWP of different terminal devices is configured independently. The BWP configuration configured by the network device for the terminal device includes physical downlink control channel configuration information (PDCCH-config) and physical downlink shared channel configuration information (PDSCH-config).

The PDCCH-config configures related parameters of the PDCCH received by the terminal equipment and the related parameters of the PDCCH detected by the terminal equipment blindly. For example, PDCCH-config comprises a cell "control resources to addmodlist" for indicating a set of control resources (control resource Sets, cores) that at least one network device is configured to a terminal device. For example, "control ResourceSetToAddModList" may include parameters "control ResourceSetid", "duration", "frequencyDomainResources", and the like. Wherein the control resource set id may indicate the number of CORESET. frequencydomalnresource may indicate the frequency domain resources occupied by CORESET. The duration may indicate the number of time domain symbols occupied by CORESET. PDCCH-config may also include a cell "search space to addmodlist" indicating that at least one network device is configured to a Search Space (SS) of a terminal device. The searchspacestoadmodlist may include parameters "searchSpaceId", "controlresourcestid", "monitoringSymbolsWithinSlot", "duration", and the like. Wherein searchspace may indicate the number of SS. The controllably resourcesetid may indicate the number of CORESET applied to the SS. monitoringsymbols withinslot may indicate from which symbol the terminal device blindly detects the PDCCH in each slot the SS continues. Duration may indicate the number of slots that the SS continues.

The terminal device can determine the time-frequency domain position of the blind detection PDCCH according to the PDCCH-config. It can be appreciated that granularity of time domain symbols occupied by the PDCCH is related to CP of BWP configuration. For example, the BWP configured CP is NCP, and the SS indicated by monitoringsymbol withinslot continues to include 14 symbols per slot. The BWP configured CP is ECP, and the SS indicated by monitoringsymbols within slot continues to include 12 symbols per slot.

PDSCH-config configures relevant parameters for the terminal device to receive PDSCH. For example, PDSCH-config may include a cell "PDSCH-timedomainalllocation list" that may include PDSCH-timedomainalllocation configured by at least one network device, each PDSCH-timedomainalllocation may include parameters "K0", "startSymbolAndLength", and so on. Wherein K0 is the number of slots spaced between the slot where PDCCH is located and the slot where PDSCH is located. startSymbolAndLength may indicate an index of a time domain start symbol and length combination of PDSCH as a start and length indicator (start and length indicator, SLIV). PDSCH-config also includes a cell "resource allocation" that may indicate the allocation type of frequency domain resources of PDSCH, as will be described in detail below.

It can be appreciated that granularity of time domain symbols occupied by PDSCH is related to CP of BWP configuration. For example, the BWP-configured CP is NCP, and then the time domain resource of the PDSCH is configured based on NCP, i.e., configured to include 14 symbols per one slot. The BWP-configured CP is an ECP, and then the time domain resource of the PDSCH is configured based on the NCP, i.e., configured to include 12 symbols per one slot.

6) "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one item(s)" or the like below refers to any combination of these ten or more items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

And, unless specified to the contrary, the embodiments of the present application refer to the ordinal terms "first," "second," etc., as used to distinguish between multiple objects, and are not to be construed as limiting the order, timing, priority, or importance of the multiple objects. For example, the first frequency domain resource and the second frequency domain resource are only for distinguishing between different frequency domain resources, and are not indicative of the difference in size, priority, importance, or the like of the two resources. In the embodiments of the present application, "if" and "if" are interchangeable, and "when …" is interchangeable with "case at …" unless otherwise specified. Unless otherwise specified, in each embodiment of the present application, the PDCCH is used to indicate the same meaning as the DCI indicates the resource of the PDSCH.

The foregoing presents some technical terms related to the embodiments of the present application, and the following presents technical features related to the embodiments of the present application.

When the network device needs to send information to the terminal device, the resource of the PDSCH scheduled by the network device can be indicated through the PDCCH. There are two methods of scheduling PDSCH, namely, a normal scheduling method (also referred to as a non-semi-persistent scheduling method or a dynamic scheduling method) and a semi-persistent scheduling (semi-persistent scheduling, SPS) method. The normal scheduling manner, that is, before the network device transmits PDSCH each time, transmits PDCCH, where the PDCCH may indicate relevant parameters of the PDSCH, for example, a time slot in which the PDSCH is received, and a starting symbol of the PDSCH in the time slot and the number of symbols occupied by the PDSCH (that is, the length of the PDSCH). For example, a time domain resource allocation information field (time domain resource allocation assignment, TDRA) in downlink control information (downlink control information, DCI) carried by the PDCCH may indicate a certain PDSCH-timedomainalllocation in PDSCH-timedomainalllocation list in PDSCH-config. The terminal equipment determines the time domain initial symbol and the length of the PDSCH according to the startSymbolAndLength configured in the PDSCH-TimeDomainAlllocation.

In the SPS mode, the terminal device may have multiple SPS configurations, and each SPS configuration may indicate a period for scheduling PDSCH and related parameters for receiving PDSCH. The network device can activate one SPS configuration in the plurality of SPS configurations through the PDCCH, the terminal device can determine the time-frequency resource position of the subsequent PDSCH through the period of scheduling the PDSCH, and the network device does not need to send the PDCCH from the resource of the PDSCH which indicates the network device to schedule each time.

The services of different terminal devices may be the same or different. Based on the services of a plurality of terminal devices, the network device and the terminal devices may be transmitted in a unicast mode or in a multicast (or multicast) mode. The unicast mode is that the network device transmits PDSCH to one terminal device in the same time period, whereas the multicast mode is that the network device transmits PDSCH to a plurality of terminal devices in the same time period. In order to distinguish the unicast mode from the multicast mode, the network device may allocate an RNTI to the terminal device, and the terminal device determines the resources of the PDSCH to be received by itself through the PDCCH scrambled by the RNTI. For example, in the unicast mode, the RNTI allocated by the network device to the terminal device may be a C-RNTI, and the terminal device determines the resource of the PDSCH according to the PDCCH scrambled by the C-RNTI, and further receives the PDSCH. The C-RNTI may also be considered to identify a one-to-one transmission of a network device to a terminal device. In the multicast mode, the RNTI allocated by the network device to the terminal device may be G-RNTI, the G-RNTI of a plurality of terminal devices is the same, and the terminal device receives DCI scrambled by the G-RNTI according to the G-RNTI to determine the resource of the PDSCH, thereby receiving the PDSCH. The G-RNTI may also be considered to identify one-to-many transmissions of network devices to terminal devices.

It is to be understood that, for any terminal device, the RNTI allocated by the network device to the terminal device may be a C-RNTI or a G-RNTI. The terminal device may determine to receive PDSCH transmitted in unicast and/or PDSCH transmitted in multicast based on the RNTI allocated thereto by the network device. For ease of understanding, please refer to fig. 1, which is a schematic diagram of coexistence of unicast PDSCH and multicast PDSCH. Fig. 1 illustrates a group of UE1 and UE 2. The network device transmits PDSCH1 and PDSCH2 to UE1, and transmits PDSCH2 and PDSCH3 to UE 2. The network device may send PDSCH1 to UE1, PDSCH3 to UE2, and PDSCH2 to both UE1 and UE2 in a unicast manner.

The multicast scheme requires that a plurality of terminal devices receive PDSCH on the same time-frequency resource and the network device independently configures BWP for the plurality of terminal devices, so the network device may configure the same frequency-domain resource (i.e., CFR) in the BWP respectively configured for each terminal device for PDSCH reception. It should be understood that CFR is located within BWP range of each terminal device. For example, please refer to fig. 2, which is a schematic diagram of CFR. Fig. 2 exemplifies that UE1, UE2 and UE3 receive PDSCH on the same time-frequency resource. The BWP configured by the network device for UE1 is BWP1, the BWP configured by the network device for UE2 is BWP2, and the BWP configured by the network device for UE3 is BWP3. As can be seen from fig. 2, CFR is the same frequency domain resource in BWP1, BWP2 and BWP3.

In a possible scenario, the communication system may support SFN, i.e. may allow multiple network devices to transmit the same data in the same time-frequency resource in a synchronized state. Therefore, the success rate of receiving data by the terminal equipment can be improved, and the use efficiency of frequency domain resources can also be improved. But the CP of the time domain symbol corresponding to the BWP activated by the terminal device is of one type, for example NCP or ECP. It will be appreciated that, at the same distance, the delays of the network devices arriving at the terminal devices based on information transmitted by one type of CP are not very different. In SFN, the distances between multiple network devices and the terminal device are different, if information is still transmitted with one CP, so the time when the data of each network device arrives at the terminal device is also different, even greatly different, which affects the reception of the data by the terminal device.

In view of this, a technical solution of the embodiments of the present application is provided. In the scheme provided by the embodiment of the application, the CP type of the time domain symbol corresponding to the frequency domain resource used for unicast transmission is different from the CP type of the time domain symbol corresponding to the frequency domain resource used for multicast/broadcast transmission. For example, the CP of the time domain symbol corresponding to the frequency domain resource for unicast transmission is NCP, and the CP of the time domain symbol corresponding to the frequency domain resource for multicast/broadcast transmission is ECP. Since the ECP has longer time domain symbols in one slot compared to the NCP, the impact on the terminal device reception data due to different delays of arrival of multiple network devices at the terminal device in the SFN can be reduced.

The technical scheme provided by the embodiment of the application can be applied to a 5G mobile communication system, such as an NR system, or an LTE system, or a next generation mobile communication system or other similar communication systems.

Referring to fig. 3, an exemplary architecture diagram of a communication system suitable for use in embodiments of the present application may include a core network device, a network device (also referred to as an access network device), and a terminal device. The terminal equipment is connected with the network equipment in a wireless mode, and the network equipment is connected with the core network equipment in a wireless or wired mode. The core network device and the network device may be separate and distinct physical devices; or the functions of the core network equipment and the logic functions of the network equipment are integrated on the same physical equipment; or the functions of part of the core network device and the functions of part of the network device are integrated on the same physical device. It should be noted that fig. 3 is an illustration, and the number of core network devices, and terminal devices included in the mobile communication system is not limited in the embodiments of the present application. In some embodiments, the communication system may also include other devices, such as wireless relay devices, wireless backhaul devices, and the like.

The following describes a communication method provided in the embodiments of the present application with reference to the related drawings. In the following description, an example is taken in which the communication method provided in the embodiment of the present application is applied to the network architecture shown in fig. 3. In addition, the method may be performed by two communication devices, such as a first communication device and a second communication device. The first communication device may be a network device or a communication device capable of supporting functions required by the network device to implement the method, and may of course be other communication devices, such as a chip system. The second communication device may be a terminal device or a communication device capable of supporting the functions required by the terminal device to implement the method, but may of course also be other communication devices, such as a chip system. And there is no limitation on the implementation of both the first communication device and the second communication device. For example, the first communication means may be a network device and the second communication means a terminal device; or the first communication device is a communication device capable of supporting the functions required by the network equipment to implement the method, and the second communication device is a terminal equipment.

For convenience of description, the following is an example in which the communication method provided in the embodiment of the present application is executed by the network device and the terminal device. If the embodiment of the present application is applied to the network architecture shown in fig. 3, the network device described below may be a network device in the network architecture shown in fig. 3, and the terminal device described below may be a terminal device in the network architecture shown in fig. 3. In this embodiment of the present application, the CP of the time domain symbol corresponding to the frequency domain resource may be NCP or ECP. In other words, in the embodiment of the present application, there are two CPs, and two CP types can be considered. For example, the CP type is an NCP type, that is, the CP is an NCP. Similarly, the CP type is an ECP type, that is, the CP is an ECP.

Fig. 4 is a schematic flow chart of a communication method according to an embodiment of the present application.

S401, the network equipment sends configuration information to the terminal equipment, and correspondingly, the terminal equipment receives the configuration information from the network equipment, wherein the configuration information indicates the first frequency domain resource and the second frequency domain resource.

The first frequency domain resource may be a resource for unicast transmission, whereas the second frequency domain resource is a resource for multicast/broadcast transmission. For example, the first frequency domain resource is BWP configured by the network device for the terminal device for unicast transmission, and the second frequency domain resource is CFR configured by the network device for the terminal device for multicast transmission. It can be appreciated that the network device may perform multicast data transmission in the frequency domain resource corresponding to the CFR, or may perform unicast data transmission in the frequency domain resource corresponding to the CFR. For another example, the first frequency domain resource may be a CFR configured by the network device for the terminal device, and the second frequency domain resource may be another CFR configured by the network device for the terminal device, where multicast/broadcast services corresponding to the two CFRs are different. In the embodiment of the present application, the CP type of the time domain symbol corresponding to the first frequency domain resource is different from the CP type corresponding to the second frequency domain resource. For example, the CP of the time domain symbol corresponding to the first frequency domain resource is NCP, and the CP of the time domain symbol corresponding to the second frequency domain resource is ECP (this is an example here). Alternatively, the CP of the time domain symbol corresponding to the first frequency domain resource is ECP, and the CP of the time domain symbol corresponding to the second frequency domain resource is NCP. Since the ECP has longer time domain symbols in one slot compared to the NCP, the impact on the terminal device reception data due to different delays of arrival of multiple network devices at the terminal device in the SFN can be reduced.

The network device may configure the CP of the time domain symbol corresponding to the first frequency domain resource and the CP of the time domain symbol corresponding to the second frequency domain resource respectively through the configuration information. Depending on the implementation forms of the first frequency domain resource and the second frequency domain resource, the implementation forms of the configuration information are different, and are described below with examples 1 and 2. The time domain symbol corresponding to the frequency domain resource may be understood as a time domain symbol occupied by information transmitted in the frequency domain resource. Similarly, the CP type of the time domain symbol corresponding to the frequency domain resource may be understood as the CP type of the time domain symbol occupied by the information transmitted in the frequency domain resource. For example. And the network equipment transmits the PDCCH on a certain frequency domain resource, wherein the CP type of the time domain symbol corresponding to the frequency domain resource is the CP type of the time domain symbol occupied by the PDCCH in the frequency domain resource. For another example, the network device transmits PDSCH on a frequency domain resource, where the CP type of the time domain symbol corresponding to the frequency domain resource is the CP type of the time domain symbol occupied by the PDSCH in the frequency domain resource.

If the first frequency domain resource includes the second frequency domain resource in the frequency domain, the frequency domain resource occupied by the PDCCH and/or PDSCH transmitted in the first frequency domain resource may overlap with the second frequency domain resource. For example, if the PDCCH and/or PDSCH is transmitted in the first frequency domain resource, if the RNTI of the scrambled PDCCH and/or PDSCH is the C-RNTI or the first G-RNTI, the CP type of the time domain symbol occupied by the PDCCH and/or PDSCH is the CP type of the time domain symbol corresponding to the first frequency domain resource, regardless of whether the frequency domain resource occupied by the PDCCH and/or PDSCH partially or fully overlaps the second frequency domain resource. For example, if the PDCCH and/or PDSCH is transmitted in the first frequency domain resource, if the RNTI of the scrambled PDCCH and/or PDSCH is the C-RNTI or the first G-RNTI and the frequency domain resource occupied by the PDCCH and/or PDSCH is included in the second frequency domain resource, the CP type of the time domain symbol occupied by the PDCCH and/or PDSCH is still the CP type of the time domain symbol corresponding to the first frequency domain resource.

Example 1, the second frequency domain resource and the first frequency domain resource may be considered one BWP, e.g., the first frequency domain resource is BWP and the second frequency domain resource is CFR located within the first frequency domain resource. In this case, the network device may configure the CP of the BWP corresponding time domain symbol through the configuration information of the BWP. For example, the network device transmits radio resource control (radio resources control, RRC) signaling to the terminal device, which may configure the CP of the time domain symbol corresponding to the BWP. It should be noted that, unlike the current network device configured with the BWP being NCP or ECP (i.e., configured with one CP for the BWP), in the embodiment of the present application, the network device may configure two different CPs for the BWP, for example, the CP configuring the time domain symbol corresponding to the first frequency domain resource is NCP, and the CP configuring the time domain symbol corresponding to the second frequency domain resource is ECP. For example, the configuration information (e.g., RRC signaling) of the BWP may include a first parameter for configuring the CP of the time domain symbol corresponding to the first frequency domain resource and a second parameter for configuring the CP of the time domain symbol corresponding to the first frequency domain resource.

Example 2, the second frequency domain resource and the first frequency domain resource may be considered as two BWP, e.g., referred to as a first BWP and a second BWP. Wherein the first frequency domain resource corresponds to a first BWP and the second frequency domain resource corresponds to a second BWP. The first frequency domain resource may also be considered as unicast BWP and the second frequency domain resource may also be considered as multicast BWP, e.g. CFR. The second frequency domain resource may or may not overlap with the first frequency domain resource. In this case, the network device may configure the CP of the time domain symbol corresponding to the first BWP through the configuration information of the first BWP and configure the CP of the time domain symbol corresponding to the second BWP through the configuration information of the second BWP. Alternatively, the CPs of the time domain symbols corresponding to the first BWP and the second BWP may be configured through one signaling. For example, the network device may configure the CP of the time domain symbol of the first BWP through a first parameter in RRC signaling, and configure the CP of the time domain symbol corresponding to the second BWP through a second parameter in the RRC signaling. It should be noted that, although the network device may configure CPs of the two BWP respectively, for example, the network device may configure that the CP of the time domain symbol corresponding to the first frequency domain resource is NCP and the CP of the time domain symbol corresponding to the second frequency domain resource is ECP. But for two BWP, the network device activates only one BWP at present, the terminal device switches between the two BWP, introducing a switching delay of the BWP, reducing the data transmission rate. However, in the embodiment of the present application, the first frequency domain resource and the second frequency domain resource are activated at the same time, which may reduce or not introduce a BWP switching delay. It is understood that in example 1, i.e., the second frequency domain resource and the first frequency domain resource are regarded as one BWP, the BWP being activated may be regarded as the first frequency domain resource and the second frequency domain resource being activated at the same time.

And S402, the network equipment sends the PDCCH to the terminal equipment, and correspondingly, the terminal equipment receives the PDCCH from the network equipment, wherein the PDCCH is used for indicating the resource of the PDSCH, and the resource of the PDSCH belongs to the first frequency domain resource or the second frequency domain resource on the frequency domain.

The network device may transmit PDSCH on the first frequency domain resource or the second frequency domain resource. It can be understood that the network device instructs the network device to schedule the resources of PDSCH through the PDCCH. For example, the PDCCH may carry DCI, which may instruct the network device to schedule the resources of the PDSCH.

In the embodiment of the application, the network device may schedule PDSCH through DCI transmitted in a unicast manner, or may schedule PDSCH through DCI transmitted in a multicast manner. Taking the CP of the time domain symbol corresponding to the first frequency domain resource as NCP and the CP of the time domain symbol corresponding to the second frequency domain resource as ECP as an example. The PDCCH may be located in a first frequency domain resource if the network device transmits DCI in a unicast manner, or in a first frequency domain resource or a second frequency domain resource if the network device transmits DCI in a multicast manner. The CP type of the time domain symbol corresponding to the frequency domain resource is related to the RNTI scrambled by the transmission information on the frequency domain resource. As previously described, the C-RNTI is used to identify one-to-one transmission of network devices to terminal devices and the G-RNTI is used to identify one-to-many transmission of network devices to terminal devices. For example, the information scrambled RNTI is a C-RNTI, and then the CP of the time domain symbol occupied by the information may be NCP; in contrast, if the RNTI scrambled by the information transmission is a G-RNTI, then the CP of the time domain symbol occupied by the information may be an ECP. For another example, if the RNTI scrambled by the information transmission is the first RNTI, then the CP of the time domain symbol occupied by the information may be NCP; in contrast, if the RNTI scrambled by the information transmission is the second G-RNTI, the CP of the time domain symbol occupied by the information may be ECP, and the first G-RNTI and the second G-RNTI are different. Accordingly, the network device may determine to transmit the PDCCH on the first frequency domain resource or the second frequency domain resource through the RNTI allocated to the terminal device, and accordingly, the terminal device may determine to receive the PDCCH on the first frequency domain resource or the second frequency domain resource through the RNTI of the scrambled PDCCH. For example, the CP of the time domain symbol corresponding to the first frequency domain resource may be NCP and the time domain symbol corresponding to the second frequency domain resource may be ECP.

Illustratively, the first frequency domain resource is BWP and the second frequency domain resource is CFR, in which case the first frequency domain resource and the second frequency domain resource may be distinguished by C-RNTI and G-RNTI. For example, the RNTI of the scrambled PDCCH is a C-RNTI, and it can be considered that the resource of the PDCCH belongs to the first frequency domain resource in the frequency domain. In contrast, the RNTI of the scrambled PDCCH is a G-RNTI, and it can be considered that the resource of the PDCCH belongs to the second frequency domain resource in the frequency domain.

Illustratively, the first frequency domain resource is a CFR and the second frequency domain resource is a CFR, in which case the first frequency domain resource and the second frequency domain resource may be distinguished by different G-RNTIs. For example, the RNTI of the scrambled PDCCH is a first G-RNTI, and it can be considered that the resource of the PDCCH belongs to a first frequency domain resource in the frequency domain. In contrast, the RNTI of the scrambled PDCCH is the second G-RNTI, and it can be considered that the resource of the PDCCH belongs to the second frequency domain resource in the frequency domain. It should be noted that the first G-RNTI and the second G-RNTI may be different from each other in the value of the first G-RNTI and the value of the second G-RNTI. Or the first G-RNTI and the second G-RNTI may be different, or the services corresponding to the first GRNTI and the second G-RNTI may be different. For example, a first G-RNTI corresponds to one multicast/broadcast service and a second G-RNTI corresponds to a different multicast/broadcast service.

Optionally, the priority of blind detection of the PDCCH in the first frequency domain resource by the terminal device is higher than the priority of blind detection of the PDCCH in the second frequency domain resource. It can also be considered that the terminal device blindly detects the PDCCH of the NCP with higher priority than the PDCCH of the blind detected ECP. It can be appreciated that the terminal device can only detect PDCCH with one set of baseband parameters for a period of time. The set of baseband parameters may be understood as a parameter configuration of the analog (or digital) filter and/or a bandwidth configuration of the analog (or digital) filter. Since the baseband parameters required for detecting the PDCCH with the time domain symbol CP being NCP in the first frequency domain resource are partially or completely different from those required for detecting the PDCCH with the time domain symbol CP being ECP in the second frequency domain resource, the PDCCH with the time domain symbol CP being NCP and the PDCCH with the time domain symbol CP being ECP cannot be detected simultaneously. However, by the method provided by the embodiment of the application, that is, the PDCCH with the time domain symbol CP being NCP is preferentially detected, the PDCCH with the detected time domain symbol CP being NCP can schedule the PDSCH transmitted by multicast or the PDSCH transmitted by unicast, so that resources consumed when the device performs busy detection can be saved.

In addition, in the embodiment of the application, the PDSCH with the CP of the time domain symbol being NCP or the PDSCH with the CP of the time domain symbol being ECP can be scheduled through the PDCCH with the CP of the time domain symbol being NCP, so that resources and power consumption consumed when the terminal device performs busy detection are further saved. The terminal device detects the PDCCH and may receive the PDSCH according to the PDSCH resources indicated by the DCI carried by the PDCCH. For example, the DCI may indicate that the resources of the PDSCH belong to the first frequency domain resources or the second frequency domain resources in the frequency domain through one or more of the following information.

Information 1, RNTI of the scrambled PDSCH. That is, the DCI may indicate that the resources of the PDSCH belong to the first frequency domain resources or the second frequency domain resources in the frequency domain by indicating an RNTI of the scrambled PDSCH.

Illustratively, the RNTI of the scrambled PDSCH is a C-RNTI, which may be considered that the resources of the PDSCH belong to the first frequency domain resources in the frequency domain. In contrast, the RNTI of the scrambled PDSCH is a G-RNTI, and it can be considered that the resources of the PDSCH belong to the second frequency domain resources in the frequency domain. For example, the first frequency domain resource is BWP and the second frequency domain resource is CFR, in which case the first frequency domain resource and the second frequency domain resource can be distinguished by C-RNTI and G-RNTI.

For example, the RNTI of the scrambled PDSCH is the first G-RNTI, and it can be considered that the resources of the PDSCH belong to the first frequency domain resources in the frequency domain. In contrast, the RNTI of the scrambled PDSCH is the second G-RNTI, and it can be considered that the resources of the PDSCH belong to the second frequency domain resources in the frequency domain. For example, the first frequency domain resource is a CFR and the second frequency domain resource is a CFR, in which case the first frequency domain resource and the second frequency domain resource may be distinguished by different G-RNTIs. It should be noted that the first G-RNTI and the second G-RNTI may be different from each other in the value of the first G-RNTI and the value of the second G-RNTI. Or the first G-RNTI and the second G-RNTI may be different, or the services corresponding to the first GRNTI and the second G-RNTI may be different. For example, the first G-RNTI corresponds to a multicast service and the second G-RNTI corresponds to a broadcast service. For another example, the first G-RNTI and the second G-RNTI correspond to different multicast or broadcast services.

Information 2, type of CP of time domain symbol occupied by pdsch. That is, the DCI may indicate that the resources of the PDSCH belong to the first frequency domain resources or the second frequency domain resources in the frequency domain by indicating the type of CP of the time domain symbol occupied by the PDSCH.

For example, the CP of the time domain symbol occupied by the PDSCH is NCP, and it can be considered that the resource of the PDSCH belongs to the first frequency domain resource in the frequency domain. In contrast, the CP of the time domain symbol occupied by the PDSCH is an ECP, and it can be considered that the resources of the PDSCH belong to the second frequency domain resources in the frequency domain.

Information 3, whether pdsch is transmitted/received through SFN. That is, the DCI may indicate that the resources of the PDSCH belong to the first frequency domain resources or the second frequency domain resources in the frequency domain by indicating whether the PDSCH is transmitted through the SFN.

For example, the PDSCH is not transmitted/received through the SFN, and it can be considered that the resources of the PDSCH belong to the first frequency domain resources in the frequency domain. In contrast, PDSCH is transmitted/received through SFN, and it is considered that the PDSCH resources belong to the second frequency domain resources in the frequency domain.

The embodiments of the present application do not limit how the DCI indicates the specific implementation of the information 1, the information 2 or the information 3, and will be specifically described below with reference to specific examples.

It is understood that, for the terminal device and the network device, as long as the first condition is satisfied, the resource of the PDSCH may be considered to belong to the first frequency domain resource in the frequency domain. The first condition may include one or more of the following: the RNTI of the scrambled PDSCH is C-RNTI, the CP of the time domain symbol occupied by the PDSCH is NCP, the PDSCH is not transmitted/received through the SFN, or the RNTI of the scrambled PDSCH is the first G-RNTI. Similarly, as long as the second condition is satisfied, the resources of the PDSCH may be considered to belong to the second frequency domain resources in the frequency domain for the terminal device and the network device. The second condition may include one or more of the following: the CP of the time domain symbol occupied by the PDSCH is an ECP, and the PDSCH is transmitted/received through the SFN, or the RNTI of the scrambled PDSCH is a second G-RNTI.

S403, the terminal equipment receives the PDSCH on the first frequency domain resource or the second frequency domain resource according to the received PDCCH.

The network device may transmit PDSCH on the first frequency domain resource or the second frequency domain resource, and if the terminal device determines that the first condition is satisfied, the terminal device receives PDSCH on the first frequency domain resource. If the terminal device determines the second condition, the terminal device receives the PDSCH on the second frequency domain resources.

In a possible implementation manner, the network device may schedule the PDSCH transmitted in a unicast manner through the PDCCH transmitted in a unicast manner, or may schedule the PDSCH transmitted in a broadcast/multicast manner through the DCI transmitted in a unicast manner, so as to save power consumption and resources that need to be consumed for blind detection of the PDCCH by the terminal device. For ease of understanding, the following description is in a specific scenario. The embodiments of the present application mainly focus on the frequency domain resources where the PDCCH and the PDSCH are located, and therefore the time domain resources where the PDCCH and the PDSCH are located are not described below.

In a first scenario, DCI transmitted by a network device in a unicast manner schedules PDSCH transmitted in a unicast manner or in a multicast manner.

Referring to fig. 5, a schematic diagram of scheduling PDSCH transmitted in unicast or multicast mode for DCI transmitted in unicast mode by a network device is shown. Fig. 5 illustrates an example of a network device configuring a first frequency domain resource and a second frequency domain resource for a terminal device. The first frequency domain resource is a BWP configured by the network device for the terminal, and the second frequency domain resource is a CFR configured by the network device for the terminal. The CFR may be located within the BWP, i.e., the first frequency domain resource and the second frequency domain resource may be regarded as one BWP (fig. 5 exemplifies this). It should be noted that the CFR may be located outside the BWP, that is, the first frequency domain resource and the second frequency domain resource may be regarded as two BWP, and there is no overlap in the frequency domain. In the embodiment of the application, the first frequency domain resource and the second frequency domain resource are activated simultaneously.

If the network device schedules the PDSCH transmitted in unicast, then there is the network device transmitting PDCCH on the first frequency domain resource and PDSCH on the first frequency domain resource. It may be appreciated that the RNTI of the scrambled PDCCH may be a C-RNTI, which may indicate the resource of the PDSCH, i.e., the first frequency domain resource. As shown in fig. 5, the network device may send a PDCCH on a first frequency domain resource corresponding to the time-frequency resource where the time slot 1 is located, where the RNTI of the PDCCH is scrambled to be a C-RNTI. The terminal device blindly detects the PDCCH in the time slot 1, and determines to receive the PDSCH on the first frequency domain resource according to the indication of the received PDCCH. As shown in fig. 5, the terminal device receives PDSCH on the first frequency domain resource corresponding to the time-frequency resource where the slot 2 is located. If the network device schedules the PDSCH transmitted in multicast in DCI transmitted in unicast, then there is the network device transmitting PDCCH on the first frequency domain resource and PDSCH on the second frequency domain resource. It may be appreciated that the RNTI of the scrambled PDCCH may be a C-RNTI, which may indicate the location of the frequency domain resources of the PDSCH, i.e., within the second frequency domain resources. As shown in fig. 5, in the time slot 1, the network device may send a PDCCH on a time-frequency resource corresponding to the first frequency domain resource, and scramble an RNTI of the PDCCH into a C-RNTI. The terminal device blindly detects the PDCCH in the time slot 1, and determines to receive the PDSCH on the second frequency domain resource according to the indication of the received PDCCH. As shown in fig. 5, the terminal device receives PDSCH on the time-frequency resource corresponding to the second frequency-domain resource in the slot 2.

The PDCCH indicates that the resources of the PDSCH may be indicated by DCI carried by the PDCCH as one or more of: the RNTI of the scrambled PDSCH is C-RNTI, the CP of the time domain symbol occupied by the PDSCH is NCP, or the PDSCH is not transmitted in the SFN.

For example, the DCI includes a first indication field, where the first indication field may occupy 1bit, and when the 1bit is the first value, it may indicate that an RNTI of the scrambled PDSCH is a C-RNTI, a CP of a time domain symbol occupied by the PDSCH is an NCP, or the PDSCH is not transmitted in the SFN. In contrast, when the 1bit value is the second value, the RNTI of the scrambled PDSCH may be indicated as the G-RNTI, the CP of the time domain symbol occupied by the PDSCH is the ECP, or the PDSCH is transmitted in the SFN. Wherein the first value is 0 and the second value is 1; the first value is 1 and the second value is 0.

For another example, the DCI includes a first indication field indicating that an RNTI of the scrambled PDSCH is C-RNTI, a CP of a time domain symbol occupied by the PDSCH is NCP, or the PDSCH is not transmitted in the SFN. In contrast, the DCI does not include the first indication field, and the DCI indicates that an RNTI of the scrambled PDSCH is a G-RNTI, a CP of a time domain symbol occupied by the PDSCH is an ECP, or the PDSCH is transmitted in the SFN. Alternatively, the DCI does not include the first indication field, and the DCI indicates that an RNTI of the scrambled PDSCH is C-RNTI, a CP of a time domain symbol occupied by the PDSCH is NCP, or the PDSCH is not transmitted in the SFN. In contrast, the DCI includes a first indication field, and the DCI indicates that an RNTI of a scrambled PDSCH is a G-RNTI, a CP of a time domain symbol occupied by the PDSCH is an ECP, or the PDSCH is transmitted in the SFN.

The first indication field may be a newly defined indication field or a defined indication field. For example, the first indication field may be "Time Domain Resource Assignment field". It is understood that the Time Domain Resource Assignment field may map to a certain PDSCH-timedomainalllocation in the PDSCH-timedomainalllocation list. The PDSCH-timedomainalillocation includes configuration information that may indicate one or more of an RNTI of the scrambled PDSCH on a time domain resource corresponding to the PDSCH-timedomainalillocation, whether the PDSCH is a PDSCH of the SFN, or a CP of the PDSCH. If PDSCH-TimeDomainAlllocation indicates that PDSCH satisfies one or more of the following: the RNTI of the scrambled PDSCH is a G-RNTI, the CP of the PDSCH is an ECP, or the PDSCH is a PDSCH in the SFN, and the terminal device determines to receive the PDSCH on the second frequency domain resource according to the DCI. If PDSCH-TimeDomainAlllocation indicates that PDSCH satisfies one or more of the following: the RNTI of the scrambled PDSCH is C-RNTI, the CP of the PDSCH is NCP, or the PDSCH is not PDSCH in the SFN, and the terminal device determines to receive the PDSCH on the first frequency domain resource according to the DCI. That is, the embodiment of the application implicitly indicates that the PDSCH is located in the first frequency domain resource or the second frequency domain resource through Time Domain Resource Assignment domain.

It may be understood that DCI carried by PDCCH includes Frequency Domain Resource Allocation domain, and the terminal device may determine specific frequency domain resources for receiving PDSCH according to indication of Frequency Domain Resource Allocation domain. For example, the allocation type of the frequency domain resources of the PDSCH is type 1, and the terminal device may calculate the frequency domain resources occupied by the PDSCH according to the starting RBs of the first frequency domain resources, the total number of RBs included in the first frequency domain resources, and the Frequency Domain Resource Allocation field in the DCI. Or, the terminal device may calculate the frequency domain resource occupied by the PDSCH according to the starting RB of the second frequency domain resource, the total number of RBs included in the second frequency domain resource, and the FDRA domain in the DCI.

In the embodiment of the present application, the network device schedules the PDSCH transmitted in a unicast manner or a multicast manner or the PDSCH transmitted in a unicast manner through the PDCCH transmitted in a unicast manner. Therefore, the terminal equipment only needs to blindly detect the PDCCH transmitted in the unicast mode or the multicast mode, and does not need to blindly detect the PDCCH transmitted in the multicast mode, so that the power consumption of blindly detecting the PDCCH by the terminal equipment can be reduced. In addition, the CPs of the time domain symbols corresponding to the first frequency domain resource and the second frequency domain resource are different, so that the influence of time delay on the receiving of the terminal equipment in the SFN can be reduced. And because the first frequency domain resource and the second frequency domain resource are activated at the same time, the time delay for switching the frequency domain resources is not additionally introduced, so that the efficiency of data transmission is improved as much as possible.

Fig. 5 illustrates an example in which a network device configures one BWP and one CFR for a terminal device. In a possible implementation, the network device may configure one BWP and multiple CFRs for the terminal device. For example, DCI transmitted in a unicast manner by a network device schedules multiple PDSCH transmitted in a multicast manner.

For example, please refer to fig. 6, which is another schematic diagram of scheduling PDSCH transmitted in unicast or multicast for DCI transmitted in unicast by a network device. Fig. 6 illustrates that the network device may configure one BWP and two CFRs (i.e., CFR1 and CFR 2) for the terminal device. Wherein, the CP of the time domain symbol corresponding to BWP and CFR1 is NCP, and the CP of the time domain symbol corresponding to CFR2 is ECP. CFR1 and CFR2 may both be located within BWP, i.e., CFR1, CFR2 and BWP may be regarded as one BWP (this is exemplified in fig. 6). It should be noted that CFR1 may be located inside BWP and CFR2 may be located outside BWP, that is, CFR1 and BWP are one BWP and CFR2 may be regarded as another BWP. In the present embodiment, CFR1 and CFR2 are activated simultaneously.

Optionally, the priority of PDCCH in the blind detection BWP is higher than the priority of PDCCH in the blind detection CFR1, and the priority of PDCCH in the blind detection CFR1 is the same as the priority of PDCCH in the blind detection CFR 2. Alternatively, the priority of the PDCCH in the blind detection BWP is higher than the priority of the PDCCH in the blind detection CFR1, and the priority of the PDCCH in the blind detection CFR1 is the same as the priority of the PDCCH in the blind detection CFR 2.

Similar to fig. 5, in fig. 6, DCI transmitted in a unicast manner may be transmitted by a network device to schedule PDSCH transmitted in a unicast manner. For example, the network device may send PDCCH in BWP of implementation 1 and PDSCH in BWP of slot 2, and the details of fig. 5 may be referred to as the foregoing, which is not repeated here. Similarly, in fig. 6, DCI transmitted in a unicast manner by a network device schedules PDSCH transmitted in a multicast manner. For example, the network device transmits PDCCH in BWP of slot 1 and PDSCH in CFR2 of slot 2. For another example, the network device transmits PDCCH in BWP of slot 1 and PDSCH in CFR1 of slot 2. The corresponding terminal device detects the PDCCH in the BWP of slot 1 and receives the PDSCH in the BWP of slot 2. For another example, PDCCH is detected in BWP of slot 1, and PDSCH is received in CFR1 of slot 2. For another example, PDCCH is detected in BWP of slot 1, and PDSCH is received in CFR2 of slot 2.

Similar to fig. 5, the network device transmits the RNTI of the scrambled PDCCH within the BWP as the C-RNTI, and the CP of the time domain symbol occupied by the PDCCH as the NCP. Unlike fig. 5, the CP of the PDSCH transmitted by the network device on CFR1 may be NCP, the RNTI scrambling the PDSCH may be a first G-RNTI, the CP of the PDSCH transmitted by the network device on CFR2 may be ECP, and the RNTI scrambling the PDSCH may be a second G-RNTI. Wherein the first G-RNTI and the second G-RNTI are different. Accordingly, the DCI carried by the PDCCH may instruct the terminal device to receive the PDSCH on BWP or CFR1 or CFR 2.

For example, the DCI carried by the PDCCH may indicate one or more of the following: the RNTI of the scrambled PDSCH is C-RNTI, the CP of the time domain symbol occupied by the PDSCH is NCP, or the PDSCH is not transmitted in the SFN to instruct the terminal device to receive the PDSCH on the BWP. For another example, DCI carried by PDCCH may indicate that RNTI of scrambled PDSCH is first G-RNTI, CP of time domain symbol occupied by PDSCH is NCP, or PDSCH is not transmitted in SFN to instruct terminal device to receive PDSCH on CFR 1. For another example, DCI carried by PDCCH may indicate that RNTI of scrambled PDSCH is the second G-RNTI, CP of time domain symbol occupied by PDSCH is ECP, or PDSCH is transmitted in SFN to instruct terminal device to receive PDSCH on CFR 2.

For example, the DCI includes a second indication field, where the second indication field may occupy 2 bits, and the value of the 2 bits is "00", which may indicate that the RNTI of the scrambled PDSCH is C-RNTI, the CP of the time domain symbol occupied by the PDSCH is NCP, or the PDSCH is not transmitted in the SFN. In contrast, the 2bit value is "01", which may indicate that the RNTI of the scrambled PDSCH is the first G-RNTI, the CP of the time domain symbol occupied by the PDSCH is NCP, or that the PDSCH is not transmitted in the SFN. The 2bit value is "10", which may indicate that the RNTI of the scrambled PDSCH is the second G-RNTI, the CP of the time domain symbol occupied by the PDSCH is the ECP, or the PDSCH is transmitted in the SFN. It should be noted that, the value of 2 bits is only illustrative, and the embodiment of the present application does not limit the correspondence between the specific value of 2 bits and the indicated content.

Or, the second indication field occupies 1bit, and if the DCI does not include the second indication field, the DCI indicates that an RNTI of the scrambled PDSCH is C-RNTI, a CP of a time domain symbol occupied by the PDSCH is NCP, or the PDSCH is not transmitted in the SFN. In contrast, if the DCI includes the second indication field and the 1bit value is the first value, it may indicate that the RNTI of the scrambled PDSCH is the first G-RNTI, the CP of the time domain symbol occupied by the PDSCH is the NCP, or the PDSCH is not transmitted in the SFN. When the 1bit value is the second value, the RNTI of the scrambled PDSCH may be indicated as the second G-RNTI, the CP of the time domain symbol occupied by the PDSCH is the ECP, or the PDSCH is transmitted in the SFN. Wherein the first value is 0 and the second value is 1; the first value is 1 and the second value is 0.

The second indication field may be a newly defined indication field or a defined indication field. For example, the second indication field may be "Time Domain Resource Assignment field" DCI indicating the resource of PDSCH through Time Domain Resource Assignment field, and reference may be made to the content related to the resource of PDSCH when the first indication field is Time Domain Resource Assignment field, which is not described herein.

In scenario two, the network device may schedule PDSCH transmitted in multicast mode with DCI of multicast transmission mode.

Referring to fig. 7, a schematic diagram of a network device capable of scheduling PDSCH transmitted in a multicast manner with DCI transmitted in a multicast manner is shown. Fig. 7 illustrates that the network device may configure one BWP and two CFRs (i.e., CFR1 and CFR 2) for the terminal device. Wherein, the CP of the time domain symbol corresponding to BWP and CFR1 is NCP, and the CP of the time domain symbol corresponding to CFR2 is ECP. CFR1 and CFR2 may both be located within BWP, i.e., CFR1, CFR2 and BWP may be regarded as one BWP (this is exemplified in fig. 7). It should be noted that CFR1 may be located inside BWP and CFR2 may be located outside BWP, that is, CFR1 and BWP are one BWP and CFR2 may be regarded as another BWP. In the present embodiment, CFR1 and CFR2 are activated simultaneously.

In fig. 7, the network device may transmit PDCCH on CFR1 and PDSCH on CFR1 or CR 2. It may be appreciated that the CP of the time domain symbol corresponding to the PDCCH is NCP, and the RNTI scrambling the PDCCH may be the first G-RNTI. The CP of the time domain symbol corresponding to the PDSCH on CFR1 is NCP, and the RNTI for scrambling the PDSCH may be the first G-RNTI. The CP of the time domain symbol corresponding to the PDSCH on CFR2 is an ECP, and the RNTI for scrambling the PDSCH may be a second G-RNTI.

Alternatively, please refer to fig. 8, which is another schematic diagram of a network device capable of scheduling PDSCH transmitted in multicast mode with DCI transmitted in multicast mode. The network device may transmit PDCCH on CFR2 and PDSCH on CFR1 or CR 2. In this case, the CP of the time domain symbol corresponding to the PDCCH is the ECP, and the RNTI scrambling the PDCCH may be the second G-RNTI. The CP of the time domain symbol corresponding to the PDSCH on CFR1 is NCP, and the RNTI for scrambling the PDSCH may be the first G-RNTI. The CP of the time domain symbol corresponding to the PDSCH on CFR2 is an ECP, and the RNTI for scrambling the PDSCH may be a second G-RNTI.

Similar to fig. 5, DCI carried by PDCCH may include a first indication field, which may be used to indicate resources of PDSCH. For example, when the first indication field occupies 1bit and the value of the 1bit is the first value, it may indicate that the RNTI of the scrambled PDSCH is the first G-RNTI, the CP of the time domain symbol occupied by the PDSCH is the NCP, or the PDSCH is not transmitted in the SFN. In contrast, when the 1bit value is the second value, the RNTI of the scrambled PDSCH may be indicated as the second G-RNTI, the CP of the time domain symbol occupied by the PDSCH is the ECP, or the PDSCH is transmitted in the SFN. Wherein the first value is 0 and the second value is 1; the first value is 1 and the second value is 0.

For another example, the DCI includes a first indication field indicating that an RNTI of the scrambled PDSCH is a first G-RNTI, a CP of a time domain symbol occupied by the PDSCH is an NCP, or the PDSCH is not transmitted in the SFN. In contrast, the DCI does not include the first indication field, and the DCI indicates that an RNTI of the scrambled PDSCH is the second G-RNTI, a CP of a time domain symbol occupied by the PDSCH is the ECP, or the PDSCH is transmitted in the SFN. Alternatively, the DCI does not include the first indication field, the DCI indicates that an RNTI of the scrambled PDSCH is the first G-RNTI, a CP of a time domain symbol occupied by the PDSCH is the NCP, or the PDSCH is not transmitted in the SFN. In contrast, the DCI includes a first indication field, and the DCI indicates that an RNTI of a scrambled PDSCH is a second G-RNTI, a CP of a time domain symbol occupied by the PDSCH is an ECP, or the PDSCH is transmitted in the SFN.

The first indication field may be a newly defined indication field or a defined indication field. For example, the first indication field may be "Time Domain Resource Assignment field" DCI indicating the resource of PDSCH through Time Domain Resource Assignment field, and reference may be made to the content related to the resource of PDSCH when the first indication field is Time Domain Resource Assignment field, which is not described herein.

Scene three, the network device transmits PDSCH in multicast mode in SFN. In the SFN, the PDCCH is not SFN transmitted, and the PDSCH is transmitted through the SFN. That is, the CP of the time domain symbol corresponding to the PDCCH is NCP, and the time domain symbol corresponding to the PDSCH is ECP.

Fig. 9 is a schematic diagram of a network device transmitting PDSCH in a multicast manner in an SFN. Fig. 9 illustrates an example of a network device configuring a first frequency domain resource and a second frequency domain resource for a terminal device. The first frequency domain resource is a BWP configured by the network device for the terminal, and the second frequency domain resource is a CFR configured by the network device for the terminal. The CFR may be located within the BWP, i.e., the first frequency domain resource and the second frequency domain resource may be regarded as one BWP (fig. 9 exemplifies this). It should be noted that the CFR may be located outside the BWP, that is, the first frequency domain resource and the second frequency domain resource may be regarded as two BWP. In the embodiment of the application, the first frequency domain resource and the second frequency domain resource are activated simultaneously.

As shown in fig. 9, the PDCCH is not transmitted in SFN, and the CP of the time domain symbol occupied by the PDCCH is NCP, but the frequency domain resource occupied by the PDCCH is CFR within BWP. PDSCH is SFN transmitted, CP of time domain symbol occupied by PDSCH is ECP, but frequency domain resource occupied by PDCCH is CFR within BWP. In this case, the RNTI of the scrambled PDCCH may be a G-RNTI, which may be a G-RNTI in scenario one or a first G-RNTI or a second G-RNTI in scenario two. The RNTI of the scrambled PDSCH is a G-RNTI, which may be a G-RNTI in scenario one or a first G-RNTI or a second G-RNTI in scenario two. The CFR may be a CFR in scene one or may be CFR1 or CFR2 in scene two.

In the embodiment of the application, the network device schedules the PDSCH transmitted in a multicast mode or a unicast mode through the PDCCH transmitted in a unicast mode or a multicast mode, so that the power consumption of blind detection of the PDCCH by the terminal device can be reduced. In addition, the CPs of the time domain symbols corresponding to the first frequency domain resource and the second frequency domain resource are different, so that the influence of time delay on the receiving of the terminal equipment in the SFN can be reduced. And because the first frequency domain resource and the second frequency domain resource are activated at the same time, the time delay for switching the frequency domain resources is not additionally introduced, so that the efficiency of data transmission is improved as much as possible.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is described from the aspect of interaction between the terminal device and the network device, respectively. In order to implement the functions in the methods provided in the embodiments of the present application, the terminal device and the network device may include hardware structures and/or software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.

The embodiment of the application provides a communication device. Communication devices for implementing the above method in the embodiments of the present application are described below with reference to the accompanying drawings.

As shown in fig. 10, which is a possible exemplary block diagram of a communication apparatus according to the present application, the communication apparatus 1000 may correspondingly implement the functions or steps implemented by the terminal device or the network device in the above-described respective method embodiments. The communication device may include a transceiver module 1001 and a processing module 1002. Optionally, a storage module may be included, which may be used to store instructions (code or programs) and/or data. The transceiver module 1001 and the processing module 1002 may be coupled to the storage module, for example, the processing module 1002 may read instructions (code or program) and/or data in the storage module to implement a corresponding method. The above modules may be independently provided, or may be partially or fully integrated.

It is to be appreciated that the processing module 1002 can be a processor or controller, such as a general purpose central processing unit (central processing unit, CPU), general purpose processor, digital signal processing (digital signal processing, DSP), application specific integrated circuit (application specific integrated circuits, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., including one or more microprocessors, a combination of a DSP and a microprocessor, and so forth. Transceiver module 1001 is an interface circuit of the device for receiving signals from other devices. For example, when the device is implemented as a chip, the transceiver module 1001 is an interface circuit of the chip for receiving signals from other chips or devices, or an interface circuit of the chip for transmitting signals to other chips or devices.

The communication apparatus 1000 may be a network device or a terminal device in the above embodiment, or may be a chip for a network device or a terminal device. For example, when the communication apparatus 1000 is a network device or a terminal device, the processing module 1002 may be a processor, and the transceiver module 1001 may be a transceiver, for example. Alternatively, the transceiver may comprise radio frequency circuitry and the storage unit may be, for example, a memory. For example, when the communication apparatus 1000 is a chip for a network device or a terminal device, the processing module 1002 may be, for example, a processor, and the transceiver module 1001 may be, for example, an input/output interface, a pin, a circuit, or the like. The processing module 1002 may execute computer-executable instructions stored in a memory unit, optionally, a memory unit in the chip, such as a register, a cache, etc., and the memory unit may also be a memory unit in the network device, the terminal device, or the location management device, which is located outside the chip, such as a read-only memory (ROM) or other type of static storage device, a random access memory (random access memory, RAM), etc., where static information and instructions may be stored.

In some possible embodiments, the communications apparatus 1000 can correspondingly implement the behaviors and functions of the terminal device in the above method embodiments. For example, the communication apparatus 1000 may be a terminal device, or may be a component (e.g., a chip or a circuit) applied to the terminal device. The transceiver module 1001 may be used to support communication between a terminal device and other network entities, such as between a terminal device and a network device as shown in fig. 1. The processing module 1002 is configured to control and manage actions of the terminal device, for example, the processing module 1002 is configured to support the terminal device to perform all operations except for transceiving of the terminal device in fig. 4.

For example, transceiver module 1001 may be used to perform all of the receiving or transmitting operations performed by a terminal device in the embodiment shown in fig. 4, such as S401, S402, S403 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein. Wherein the processing module 1002 is configured to perform all but the transceiving operations performed by the terminal device in the embodiment illustrated in fig. 4, and/or to support other procedures of the techniques described herein.

In a possible implementation, the transceiver module 1001 may be configured to receive configuration information from a network device, where the configuration information indicates a first frequency domain resource and a second frequency domain resource, a CP of a time domain symbol corresponding to the first frequency domain resource is NCP, a CP of a time domain symbol corresponding to the second frequency domain resource is ECP, and the first frequency domain resource and the second frequency domain resource are activated simultaneously. And the first frequency domain resource is used for transmitting C-RNTI or first G-RNTI scrambling information, the second frequency domain resource is used for transmitting second G-RNTI scrambling information, and the first G-RNTI is different from the second G-RNTI. The transceiver module 1001 is further configured to receive a PDCCH from the network device on the first frequency domain resource or the second frequency domain resource, where the PDCCH is used to indicate a resource of a PDSCH, and the resource of the PDSCH belongs to the first frequency domain resource or the second frequency domain resource in a frequency domain. The processing module 1002 is configured to determine to receive a PDSCH from the network device on the first frequency domain resource or the second frequency domain resource according to the PDCCH.

As an optional implementation manner, the resource of the PDSCH belongs to the first frequency domain resource in the frequency domain when a first condition is satisfied, where the first condition includes one or more of the following: the RNTI of the scrambled PDSCH is C-RNTI, the CP of the time domain symbol occupied by the PDSCH is NCP, the PDSCH is not received through SFN, or the RNTI of the scrambled PDSCH is the first G-RNTI.

As an alternative implementation, the resources of the PDSCH belong to the second frequency domain resources in the frequency domain when the second condition is satisfied, where the second condition satisfies one or more of the following: the RNTI of the scrambling PDSCH is a second G-RNTI; the CP of the time domain symbol occupied by the PDSCH is ECP; alternatively, PDSCH is received through SFN.

As an alternative implementation, the PDCCH is used to indicate one or more of the following: the RNTI type of the scrambled PDSCH, the CP type of the time domain symbol occupied by the PDSCH, or whether the PDSCH is a PDSCH transmitted/received in the SFN.

As an optional implementation manner, the PDCCH is located in a first frequency domain resource, an RNTI of the scrambled PDCCH is a C-RNTI, and a CP of a time domain symbol occupied by the PDCCH is an NCP.

As an optional implementation manner, the PDCCH is located in a first frequency domain resource, an RNTI of the scrambled PDCCH is a first G-RNTI, and a CP of a time domain symbol occupied by the PDCCH is NCP.

As an optional implementation manner, the PDCCH is located in a second frequency domain resource, the RNTI of the scrambled PDCCH is a second G-RNTI, and the CP of the time domain symbol occupied by the PDCCH is an ECP.

As another example, transceiver module 1001 may be used to perform all of the receiving or transmitting operations performed by the network device in the embodiment shown in fig. 4, such as S401, S402, S403 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein. Wherein the processing module 1002 is configured to perform all but the transceiving operations performed by the network device in the embodiment illustrated in fig. 4, and/or to support other procedures of the techniques described herein.

The processing module 1002 may be configured to determine configuration information, where the configuration information indicates a first frequency domain resource and a second frequency domain resource, and the CP of a time domain symbol corresponding to the first frequency domain resource is NCP, the CP of a time domain symbol corresponding to the second frequency domain resource is ECP, and the first frequency domain resource and the second frequency domain resource are activated simultaneously. And the first frequency domain resource is used for transmitting C-RNTI or first G-RNTI scrambling information, the second frequency domain resource is used for transmitting second G-RNTI scrambling information, and the first G-RNTI is different from the second G-RNTI. The transceiver module 1001 may be configured to transmit the configuration information, and transmit a PDCCH on the first frequency domain resource or the second frequency domain resource, and transmit a PDSCH. The PDCCH is used to indicate a resource of the PDSCH, where the resource of the PDSCH belongs to a first frequency domain resource or belongs to a second frequency domain resource in a frequency domain.

As an alternative implementation, the resources of the PDSCH belong to the first frequency domain resources in the frequency domain when the first condition is satisfied, wherein the first condition includes one or more of: the RNTI of the scrambled PDSCH is C-RNTI, the CP of the time domain symbol occupied by the PDSCH is NCP, the PDSCH is not transmitted through the SFN, or the RNTI of the scrambled PDSCH is the first G-RNTI.

As an alternative implementation, the resources of the PDSCH belong to the second frequency domain resources in the frequency domain when the second condition is satisfied, where the second condition satisfies one or more of the following: the RNTI of the scrambling PDSCH is a second G-RNTI; the CP of the time domain symbol occupied by the PDSCH is ECP; alternatively, PDSCH is transmitted through SFN.

It should be appreciated that the processing module 1002 in embodiments of the present application may be implemented by a processor or processor-related circuit component, and the transceiver module 1001 may be implemented by a transceiver or transceiver-related circuit component.

The embodiment of the application also provides a communication system, and in particular, the communication system comprises network equipment and terminal equipment, or more network equipment and terminal equipment can be further included. The communication system comprises, for example, network devices and terminal devices for implementing the relevant functions of the embodiment of fig. 4 described above. The network devices are respectively configured to implement functions of the relevant network device portion of the embodiment of the present application, for example, to implement functions of the relevant network device portion of the embodiment shown in fig. 4. The terminal device is configured to implement functions of a relevant terminal device portion of the embodiment of the present application, for example, to implement functions of the relevant terminal device of the embodiment shown in fig. 4. Please refer to the related description in the above method embodiment, and the description is omitted here.

As shown in fig. 11, the communication apparatus 1100 provided by the embodiment of the present application is shown, where the communication apparatus 1100 may be a network device, capable of implementing the function of the network device in the method provided by the embodiment of the present application, or the communication apparatus 1100 may be a terminal device, capable of implementing the function of the terminal device in the method provided by the embodiment of the present application; alternatively, the communication apparatus 1100 may be an apparatus capable of supporting the network device or the terminal device to implement the corresponding function in the method provided in the embodiment of the present application. The communication device 1100 may be a system-on-a-chip. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

In a hardware implementation, the transceiver module 1001 may be a transceiver, and the transceiver is integrated in the communication device 1100 to form the communication interface 1110.

The communication apparatus 1100 includes at least one processor 1120, where the processor 1120 may be a CPU, microprocessor, ASIC, or one or more integrated circuits configured to control the execution of programs in the present application, for implementing or for supporting the communication apparatus 1100 to implement the functions of a network device or a terminal device in the method provided by the embodiments of the present application. Reference is made specifically to the detailed description in the method examples, and details are not described here.

The communications apparatus 1100 can also include at least one memory 1130 for storing program instructions and/or data. Memory 1130 is coupled to processor 1120. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. Processor 1120 may operate in conjunction with memory 1130. Processor 1120 may execute program instructions and/or data stored in memory 1130 to cause communication device 1100 to perform corresponding methods. At least one of the at least one memory may be included in the processor 1120.

The communication apparatus 1100 may also include a communication interface 1110, using any transceiver-like device, for communicating with other devices or communication networks, such as a RAN, wireless local area network (wireless local area networks, WLAN), wired access network, etc. The communication interface 1110 is used to communicate with other devices via a transmission medium so that devices used in the communication apparatus 1100 can communicate with other devices. Illustratively, when the communications apparatus 1100 is a network device, the other device is a terminal device; alternatively, when the communication apparatus is a terminal device, the other device is a network device. The processor 1120 may transmit and receive data using the communication interface 1110. The communication interface 1110 may be a transceiver in particular.

The specific connection medium between the communication interface 1110, the processor 1120, and the memory 1130 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 1130, the processor 1120 and the communication interface 1110 are connected by a communication line 1140 in fig. 11, and the bus is shown by a thick line in fig. 11, which is merely illustrative, but not limited to, the connection manner between other components. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in FIG. 11, but not only one bus or one type of bus.

In the embodiments of the present application, the processor 1120 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps and logic blocks disclosed in the embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution.

The memory 1130 may be, but is not limited to, ROM or other type of static storage device, RAM or other type of dynamic storage device, which may store static information and instructions, or may be an electrically erasable programmable read-only memory (EEPROM), a CD-ROM or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and capable of being accessed by a computer. The memory may be independent and coupled to the processor via communication line 1140. The memory may also be integrated with the processor.

The memory 1130 is used for storing computer-executable instructions for executing the embodiments of the present application, and is controlled by the processor 1120. The processor 1120 is configured to execute computer-executable instructions stored in the memory 1130, thereby implementing the communication method provided in the above-described embodiments of the present application.

Alternatively, the computer-executable instructions in the embodiments of the present application may be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

The communication device in the above embodiment may be a terminal device, a circuit, a chip applied to the terminal device, or other combination devices, components, etc. having the functions of the terminal device. When the communication device is a terminal device, the transceiver module may be a transceiver, may include an antenna, a radio frequency circuit, and the like, and the processing module may be a processor, for example: and a CPU. When the communication device is a component having the above-mentioned terminal device function, the transceiver module may be a radio frequency unit, and the processing module may be a processor. When the communication device is a system-on-chip, the communication device may be an FPGA, may be a dedicated ASIC, may be a system-on-chip (SoC), may be a CPU, may be a network processor (network processor, NP), may be a DSP, may be a microcontroller (micro controller unit, MCU), may be a programmable controller (programmable logic device, PLD) or other integrated chip.

For example, the processing module 1002 in fig. 10 may be a processor of a chip system, and the transceiver module 1001 or the communication interface may be an input-output interface or an interface circuit of the chip system. For example, the interface circuit may be a code/data read-write interface circuit. The interface circuit may be configured to receive code instructions (the code instructions being stored in the memory, being readable directly from the memory, or being readable from the memory via other means) and to transmit to the processor; the processor may be configured to execute the code instructions to perform the methods of the method embodiments described above. For another example, the interface circuit may also be a signal transmission interface circuit between the communication processor and the transceiver.

The communication device in the above embodiment may be a chip, which includes a logic circuit and an input-output interface, and may further include a memory. The input/output interface may be configured to receive code instructions (the code instructions are stored in the memory and may be read directly from the memory, or may be read from the memory through other devices) and transmit the code instructions to the logic circuit; the logic may be configured to execute the code instructions to perform the methods of the method embodiments described above. Alternatively, the input/output interface may be a signal transmission interface circuit between the logic circuit and the transceiver.

Fig. 12 shows a simplified schematic of the structure of a communication device. For ease of understanding and ease of illustration, in fig. 12, the communication device is exemplified as a base station. The base station may be applied to the system shown in fig. 3, and may be a network device in fig. 3, to perform the functions of the network device in the foregoing method embodiment.

The communication device 1200 may include a transceiver 1210 and a processor 1222. The transceiver 1210 may be used for communication by a communication device, for example, for transmitting or receiving the above-mentioned indication information, etc. The communications device 1200 may also include a memory 1221, the memory 1221 coupled to the processor 1222 and operable to store programs and data necessary for the communications device 1200 to perform various functions. The processor 1222 is configured to support the communication device 1200 to perform the corresponding functions of the above-described method, which may be implemented by calling a program stored in the memory 1221.

In particular, the transceiver 1210 may be a wireless transceiver operable to support the communication device 1200 in receiving and transmitting signaling and/or data over a wireless air interface. The transceiver 1210 may also be referred to as a transceiver unit or a communication unit, and the transceiver 1210 may include one or more radio frequency units 1212, such as remote radio frequency units (remote radio unit, RRU) or active antenna units (active antenna unit, AAU), particularly for transmission of radio frequency signals and conversion of radio frequency signals to baseband signals, and one or more antennas 1211, particularly for radiation and reception of radio frequency signals. Alternatively, the transceiver 1210 may include only the above radio frequency units, and then the communication device 1200 may include the transceiver 1210, the memory 1221, the processor 1222, and the antenna.

The memory 1221 and the processor 1222 may be integrated or independent. As shown in fig. 12, the memory 1221 and the processor 1222 may be integrated with the control unit 1220 of the communication device 1200. For example, the control unit 1220 may comprise a BBU of an LTE base station, the baseband unit may also be referred to as a DU, or the control unit 1220 may comprise a DU and/or CU in a base station under 5G and future radio access technologies. The control unit 1220 may be configured by one or more antenna panels, where the multiple antenna panels may support radio access networks (such as LTE networks) with a single access system, and the multiple antenna panels may also support radio access networks (such as LTE networks, 5G networks, or other networks) with different access systems. The memory 1221 and processor 1222 may service one or more antenna panels. That is, the memory 1221 and the processor 1222 may be separately provided on each antenna panel. The same memory 1221 and processor 1222 may also be shared by multiple antenna panels. Furthermore, each antenna panel may be provided with the necessary circuitry, for example, which may be used to implement the coupling of the memory 1221 and the processor 1222. Connections between the above transceiver 1210, processor 1222, and memory 1221 may be made through a bus (bus) architecture and/or other connection mediums.

Based on the structure shown in fig. 12, when the communication device 1200 needs to transmit data, the processor 1222 may perform baseband processing on the data to be transmitted, and then output a baseband signal to the rf unit, where the rf unit performs rf processing on the baseband signal and then transmits the rf signal in the form of electromagnetic wave through the antenna. When data is transmitted to the communication device 1200, the radio frequency unit 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 1222, and the processor 1222 converts the baseband signal into data and processes the data.

Based on the structure shown in fig. 12, the transceiver 1210 may be used to perform the steps performed by the transceiver module 1001 above. And/or the processor 1222 may be used to invoke instructions in the memory 1221 to perform the steps performed by the processing module 1002 above.

Fig. 13 shows a simplified schematic diagram of the structure of a terminal device. For easy understanding and convenient illustration, in fig. 13, the terminal device is exemplified by a mobile phone. As shown in fig. 13, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the vehicle-mounted unit, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of devices may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the device, the radio frequency circuit receives a radio frequency signal through the 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. For ease of illustration, only one memory and processor is shown in fig. 13. In an actual device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, which is not limited by the embodiments of the present application.

In the embodiment of the application, the antenna and the radio frequency circuit with the transceiving function can be regarded as a transceiving unit of the device, and the processor with the processing function can be regarded as a processing unit of the device. As shown in fig. 13, the apparatus includes a transceiving unit 1310 and a processing unit 1320. The transceiver unit 1310 may also be referred to as a transceiver, transceiver device, etc. The processing unit 1320 may also be referred to as a processor, processing board, processing module, processing device, etc. Alternatively, the device for implementing the receiving function in the transceiver unit 1310 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 1310 may be regarded as a transmitting unit, that is, the transceiver unit 1310 includes a receiving unit and a transmitting unit. The transceiver unit 1310 may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiver unit 1310 is configured to perform the transmitting operation and the receiving operation on the terminal side in the above-described method embodiment, and the processing unit 1320 is configured to perform other operations on the terminal other than the transceiver operation in the above-described method embodiment.

When the communication device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.

Embodiments of the present application also provide a computer-readable storage medium, including instructions, which when executed on a computer, cause the computer to perform the method performed by the network device and the terminal device in fig. 4.

Embodiments of the present application also provide a computer program product comprising instructions that, when executed on a computer, cause the computer to perform the method performed by the network device and the terminal device in fig. 4.

The embodiment of the application provides a chip system, which comprises a processor and can also comprise a memory, wherein the memory is used for realizing the functions of network equipment and terminal equipment in the method. The chip system may be formed of a chip or may include a chip and other discrete devices.

The method provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL), or wireless (e.g., infrared, wireless, microwave, etc.) means, the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc., that contains an integration of one or more available media, the available media may be magnetic media (e.g., floppy disk, hard disk, tape), optical media (e.g., digital video disc (digital video disc, DVD)), or semiconductor media (e.g., SSD), etc.

Various modifications and alterations to this application may be made by those skilled in the art without departing from the scope of this application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method of communication, comprising:

receiving configuration information from network equipment, wherein the configuration information indicates a first frequency domain resource and a second frequency domain resource, a Cyclic Prefix (CP) of a time domain symbol corresponding to the first frequency domain resource is a Normal Cyclic Prefix (NCP), a CP of a time domain symbol corresponding to the second frequency domain resource is an Extended Cyclic Prefix (ECP) type, the first frequency domain resource and the second frequency domain resource are activated simultaneously, the first frequency domain resource is used for transmitting information scrambled by a cell radio network temporary identifier (C-RNTI) or a first group radio network temporary identifier (G-RNTI), the second frequency domain resource is used for transmitting information scrambled by a second G-RNTI, and the first G-RNTI is different from the second G-RNTI;

receiving a Physical Downlink Control Channel (PDCCH) from the network equipment on the first frequency domain resource or the second frequency domain resource, wherein the PDCCH is used for indicating the resource of a Physical Downlink Shared Channel (PDSCH), and the resource of the PDSCH belongs to the first frequency domain resource or the second frequency domain resource on a frequency domain;

And receiving the PDSCH from the network equipment according to the PDCCH.

2. The method of claim 1, wherein the resources of the PDSCH belong to the first frequency domain resources in the frequency domain when a first condition is satisfied, the first condition comprising one or more of:

scrambling the RNTI of the PDSCH to be the C-RNTI;

the CP of the time domain symbol occupied by the PDSCH is NCP;

the PDSCH is not received through SFN; or alternatively, the process may be performed,

scrambling the RNTI of the PDSCH to be the first G-RNTI.

3. The method of claim 1 or 2, wherein the resources of the PDSCH belong to the second frequency domain resources in the frequency domain when a second condition is met, wherein the second condition meets one or more of:

scrambling the RNTI of the PDSCH to be a second G-RNTI;

the CP of the time domain symbol occupied by the PDSCH is ECP; or alternatively, the process may be performed,

the PDSCH is received through a single frequency network SFN.

4. The method of claim 2 or 3, wherein the PDCCH is used to indicate one or more of:

scrambling the RNTI type of the PDSCH;

the CP type of the time domain symbol occupied by the PDSCH comprises an NCP type or an ECP type; or alternatively, the process may be performed,

Whether the PDSCH is received in an SFN.

5. The method of claim 4, wherein the PDCCH is located in the first frequency domain resource, and wherein an RNTI scrambling the PDCCH is the C-RNTI, and wherein a CP of a time domain symbol occupied by the PDCCH is NCP.

6. The method of claim 4, wherein the PDCCH is located in the first frequency domain resource, an RNTI scrambling the PDCCH is the first G-RNTI, and a CP of a time domain symbol occupied by the PDCCH is NCP.

7. The method of claim 5, wherein the PDCCH is located in the second frequency domain resource, an RNTI scrambling the PDCCH is the second G-RNTI, and a CP of a time domain symbol occupied by the PDCCH is an ECP.

8. The method of any of claims 1-7, wherein a priority of blindly detecting PDCCH in the first frequency domain resource is higher than a priority of blindly detecting PDCCH in the second frequency domain resource.

9. A method of communication, comprising:

transmitting configuration information, wherein the configuration information indicates a first frequency domain resource and a second frequency domain resource, a Cyclic Prefix (CP) of a time domain symbol corresponding to the first frequency domain resource is a Normal Cyclic Prefix (NCP), a CP of a time domain symbol corresponding to the second frequency domain resource is an Extended Cyclic Prefix (ECP) type, the first frequency domain resource and the second frequency domain resource are activated simultaneously, the first frequency domain resource is used for transmitting information scrambled by a cell radio network temporary identifier (C-RNTI) or a first group radio network temporary identifier (G-RNTI), the second frequency domain resource is used for transmitting information scrambled by a second G-RNTI, and the first G-RNTI is different from the second G-RNTI;

Transmitting a Physical Downlink Control Channel (PDCCH) on the first frequency domain resource or the second frequency domain resource, wherein the PDCCH is used for indicating the resource of a PDSCH, and the resource of the PDSCH belongs to the first frequency domain resource or the second frequency domain resource on a frequency domain;

and sending the PDSCH.

10. The method of claim 9, wherein resources of the PDSCH belong to the first frequency domain resources in a frequency domain when a first condition is satisfied, wherein the first condition comprises one or more of:

scrambling the RNTI of the PDSCH to be the C-RNTI;

the CP of the time domain symbol occupied by the PDSCH is NCP;

the PDSCH is not transmitted over SFN; or alternatively, the process may be performed,

scrambling the RNTI of the PDSCH to be the first G-RNTI.

11. The method of claim 9 or 10, wherein the resources of the PDSCH belong to the second frequency domain resources in the frequency domain when a second condition is met, wherein the second condition meets one or more of:

scrambling the RNTI of the PDSCH to be the second G-RNTI;

the PDSCH is transmitted over a single frequency network SFN.

12. The method of claim 11, wherein the PDCCH is used to indicate one or more of:

Scrambling the RNTI type of the PDSCH;

whether the PDSCH is a PDSCH transmitted in an SFN.

13. The method of claim 12, wherein the PDCCH is located in the first frequency domain resource, and wherein an RNTI scrambling the PDCCH is the C-RNTI, and wherein a CP of a time domain symbol occupied by the PDCCH is NCP.

14. The method of claim 12, wherein the PDCCH is located in the first frequency domain resource, an RNTI scrambling the PDCCH is the first G-RNTI, and a time domain symbol occupied by the PDCCH is NCP.

15. The method of claim 14, wherein the PDCCH is located in the second frequency domain resource, an RNTI scrambling the PDCCH is the second G-RNTI, and a CP of a time domain symbol occupied by the PDCCH is an ECP.

16. The communication device is characterized by comprising a processing module and a receiving and transmitting module, wherein the processing module receives configuration information from network equipment through the receiving and transmitting module, the configuration information indicates a first frequency domain resource and a second frequency domain resource, a Cyclic Prefix (CP) of a time domain symbol corresponding to the first frequency domain resource is a Normal Cyclic Prefix (NCP), a CP of a time domain symbol corresponding to the second frequency domain resource is an Extended Cyclic Prefix (ECP) type, the first frequency domain resource and the second frequency domain resource are activated simultaneously, the first frequency domain resource is used for transmitting information scrambled by a cell radio network temporary identifier (C-RNTI) or a first group radio network temporary identifier (G-RNTI), the second frequency domain resource is used for transmitting information scrambled by a second G-RNTI, and the first G-RNTI and the second G-RNTI are different;

Receiving a Physical Downlink Control Channel (PDCCH) from the network equipment on the first frequency domain resource or the second frequency domain resource, wherein the PDCCH is used for indicating the resource of a Physical Downlink Shared Channel (PDSCH), and the resource of the PDSCH belongs to the first frequency domain resource or the second frequency domain resource on a frequency domain; and

and receiving the PDSCH from the network equipment according to the PDCCH.

17. The communications apparatus of claim 16, wherein resources of the PDSCH belong to the first frequency domain resources in a frequency domain when a first condition is met, wherein the first condition comprises one or more of:

scrambling the RNTI of the PDSCH to be the C-RNTI;

the CP of the time domain symbol occupied by the PDSCH is NCP;

the PDSCH is not received over a single frequency network SFN; or alternatively, the process may be performed,

scrambling the RNTI of the PDSCH to be the first G-RNTI.

18. The communications apparatus of claim 16 or 17, wherein resources of the PDSCH belong to the second frequency domain resources in a frequency domain when a second condition is met, wherein the second condition meets one or more of:

scrambling a Radio Network Temporary Identifier (RNTI) of the PDSCH to be the second G-RNTI;

the PDSCH is received through an SFN.

19. The communications apparatus of claim 17 or 18, wherein the PDCCH is used to indicate one or more of:

scrambling the RNTI type of the PDSCH;

whether the PDSCH is a PDSCH transmitted in an SFN.

20. The communications apparatus of claim 19, wherein the PDCCH is located in the first frequency domain resource and an RNTI scrambling the PDCCH is the C-RNTI and a CP of a time domain symbol occupied by the PDCCH is NCP.

21. The communications apparatus of claim 19, wherein the PDCCH is located in the first frequency domain resource, an RNTI scrambling the PDCCH is the first G-RNTI, and a CP of a time domain symbol occupied by the PDCCH is NCP.

22. The communications apparatus of claim 21, wherein the PDCCH is located in the second frequency domain resource, an RNTI scrambling the PDCCH is the second G-RNTI, and a CP of a time domain symbol occupied by the PDCCH is an ECP.

23. A communication device is characterized by comprising a processing module and a receiving and transmitting module, wherein,

The processing module is configured to determine configuration information, where the configuration information indicates a first frequency domain resource and a second frequency domain resource, a cyclic prefix CP of a time domain symbol corresponding to the first frequency domain resource is a normal cyclic prefix NCP, a CP of a time domain symbol corresponding to the second frequency domain resource is an extended cyclic prefix ECP, the first frequency domain resource and the second frequency domain resource are activated simultaneously, the first frequency domain resource is used to transmit a cell radio network temporary identifier C-RNTI or information scrambled by a first group radio network temporary identifier G-RNTI, and the second frequency domain resource is used to transmit information scrambled by a second G-RNTI, where the first G-RNTI is different from the second G-RNTI;

the transceiver module is configured to send the configuration information, send a physical downlink control channel PDCCH on the first frequency domain resource or the second frequency domain resource, and send the PDSCH, where the PDCCH is used to indicate a resource of the PDSCH, and the resource of the PDSCH belongs to the first frequency domain resource or the second frequency domain resource in a frequency domain.

24. The communications apparatus of claim 23, wherein resources of the PDSCH belong to the first frequency domain resources in a frequency domain when a first condition is met, wherein the first condition comprises one or more of:

Scrambling the RNTI of the PDSCH to be the C-RNTI;

the CP of the time domain symbol occupied by the PDSCH is NCP;

the PDSCH is not transmitted over a single frequency network SFN; or alternatively, the process may be performed,

scrambling the RNTI of the PDSCH to be the first G-RNTI.

25. The communications apparatus of claim 23 or 24, wherein resources of the PDSCH belong to the second frequency domain resources in a frequency domain when a second condition is met, wherein the second condition meets one or more of:

scrambling the RNTI of the PDSCH to be the second G-RNTI;

the PDSCH is transmitted through an SFN.

26. The communications apparatus of claim 24 or 25, wherein the PDCCH is used to indicate one or more of:

scrambling the RNTI type of the PDSCH;

whether the PDSCH is a PDSCH transmitted in an SFN.

27. The communications apparatus of claim 26, wherein the PDCCH is located in the first frequency domain resource and an RNTI scrambling the PDCCH is the C-RNTI and a CP of a time domain symbol occupied by the PDCCH is NCP.

28. The communications apparatus of claim 26, wherein the PDCCH is located in the first frequency domain resource and an RNTI scrambling the PDCCH is the first G-RNTI and a CP of a time domain symbol occupied by the PDCCH is NCP.

29. The communications apparatus of claim 26, wherein the PDCCH is located in the second frequency domain resource and an RNTI scrambling the PDCCH is the second G-RNTI and a CP of a time domain symbol occupied by the PDCCH is an ECP.

30. A communication device comprising a processor coupled to a memory, the processor for invoking computer instructions in the memory to cause the communication device to perform the method of any of claims 1-8 or to perform the method of any of claims 9-15.

31. A computer readable storage medium storing computer instructions which, when executed, cause a computer to perform the method of any one of claims 1-8 or cause a computer to perform the method of any one of claims 9-15.