Method and device for sending and receiving control information

Abstract

The invention discloses a method and equipment for sending and receiving control information, which are used for realizing that network equipment in a 5G NR system or an LTE system evolved in the future indicates the time-frequency position of a control channel to terminal equipment. The method comprises: a terminal device receiving broadcast information, determining a time domain position of a broadcast channel bearing the broadcast information in at least two predefined time domain positions, then determining a time domain position of a control channel according to the time domain position of the broadcast channel, and detecting the control channel at the determined time domain position of the control channel.

Description

[0001] This application is a divisional application. The application number of the original application is 201880052157.5, and the original application date is July 27, 2018. The entire contents of the original application are incorporated into this application by reference.

[0002] The original application claims priority to a Chinese patent application filed with the China Patent Office on August 11, 2017, with application number 201710687956.7 and invention name “A method and device for sending and receiving control information”, the entire contents of which are incorporated by reference in this application. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to a method and device for sending and receiving control information. Background Art

[0004] In the existing long term evolution (LTE) system, the network equipment indicates the time-frequency position of the control channel to the terminal equipment through broadcast information, and then the terminal equipment detects the control channel at the time-frequency position of the control channel. The broadcast information carries two pieces of information respectively used to indicate the time domain position and frequency domain position of the control channel. The control channel refers to the resources used to transmit the control channel.

[0005] At present, the technical solution for the network device to indicate the time-frequency position of the control channel to the terminal device has not been defined for the future fifth generation (5th generation, 5G) new radio (new radio, NR) system or the future evolved LTE system. If the technical solution for the network device to indicate the time-frequency position of the control channel to the terminal device in the existing LTE system is continued, in the 5G NR system or the future evolved LTE system, since there may be multiple configuration schemes for the time-frequency position of the control channel in one subframe, the signaling overhead of the two information for indicating the time domain position and the frequency domain position of the control channel is large, which in turn leads to a large signaling overhead of the broadcast information.

[0006] In summary, there is an urgent need to design a technical solution for a network device to indicate the time-frequency position of a control channel to a terminal device for the future 5G NR system or the future evolved LTE system. Summary of the invention

[0007] The embodiments of the present application provide a method and device for sending and receiving control information, which are used to enable a network device in a 5G NR system or a future evolved LTE system to indicate the time-frequency position of a control channel to a terminal device, thereby enabling the terminal device to detect the control channel at the time-frequency position of the control channel.

[0008] In a first aspect, an embodiment of the present application provides a method for receiving control information, comprising: receiving broadcast information, determining the time domain position of a broadcast channel carrying the broadcast information in at least two predefined time domain positions, then determining the time domain position of a control channel based on the time domain position of the broadcast channel, and detecting the control channel at the time domain position of the control channel.

[0009] The at least two predefined time domain positions are the time domain positions that may be occupied by the broadcast channel in a subframe, the time domain position of the broadcast channel is the position relative to the time slot boundary, and there may be at least two time domain positions of the broadcast channel in a time slot. The time domain position of the control channel is the position relative to the time slot boundary.

[0010] In the above method, the network device in the 5G NR system or the future evolved LTE system can indicate the time-frequency position of the control channel to the terminal device, and then the terminal device detects the control channel at the time-frequency position of the control channel. Compared with the technical solution in which the network device indicates the time-frequency position of the control channel to the terminal device in the existing LTE system, the above method can reduce the signaling overhead for indicating the time domain position of the control channel, thereby reducing the signaling overhead of the broadcast information.

[0011] Accordingly, there are multiple methods for determining the time domain position of the control channel according to the time domain position of the broadcast channel. Two of these methods are described below as examples.

[0012] The first method is specifically: determining an offset according to a time domain position of a broadcast channel, and then determining a time domain position of a control channel according to the offset.

[0013] Through the first method, the terminal device can determine the time domain position of the control channel based on the time domain position of the broadcast channel and the offset corresponding to the time domain position of the broadcast channel, without carrying information used to indicate the time domain position of the control channel in the broadcast information, thereby reducing the signaling overhead of the broadcast information.

[0014] The second method is specifically: determining the time domain position of the control channel according to the corresponding relationship between the time domain position of the broadcast channel and the time domain position of the control channel.

[0015] Through the second method, the terminal device can determine the time domain position of the control channel based on the time domain position of the broadcast channel and the correspondence between the preset time domain position of the broadcast channel and the time domain position of the control channel, without carrying information for indicating the time domain position of the control channel in the broadcast information, thereby reducing the signaling overhead of the broadcast information.

[0016] In a possible implementation, the pre-configuration of the time domain position of the broadcast channel and the time domain position of the control channel is not arbitrary, and the time domain position of any broadcast channel and the time domain position of the control channel determined according to the time domain position of the broadcast channel need to satisfy one of the following items:

[0017] The first item: The time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0018] Item 2: The time domain position of the control channel is completely or partially the same as the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0019] Item 3: Part of the time domain positions of the control channel are orthogonal to the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel, and the remaining part of the time domain positions of the control channel are completely or partially the same as the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0020] In one possible implementation, after receiving the broadcast information, the time domain position of the control channel is determined based on the time domain position of the broadcast channel and the subcarrier width used by the resources where the control channel is located, wherein the received broadcast information includes information indicating the subcarrier width used by the resources where the control channel is located.

[0021] In this way, the terminal device can determine the time domain position of the control channel based on the time domain position of the broadcast channel and the subcarrier width used by the resources where the control channel is located. There is no need to carry information indicating the time domain position of the control channel in the broadcast information, thereby reducing the signaling overhead of the broadcast information.

[0022] In a possible implementation manner, the time domain position of the control channel is determined in the time domain resource set according to the time domain position of the broadcast channel, wherein the received broadcast information includes indication information for indicating the time domain resource set of the control channel.

[0023] In this way, the terminal device can determine the time domain position of the control channel in the time domain resource set based on the time domain position of the broadcast channel, without carrying information used to indicate the time domain position of the control channel in the broadcast information, thereby reducing the signaling overhead of the broadcast information.

[0024] In a possible implementation manner, a reference signal of a broadcast channel and a reference signal of a control channel are QCL; and / or, a reference signal of a broadcast channel and a synchronization signal of a control channel are QCL.

[0025] In a possible implementation manner, system information is received, where the system information includes time-frequency resources of other control channels except the control channel.

[0026] In a second aspect, an embodiment of the present application provides a method for sending control information, comprising: sending broadcast information, and sending a control channel to a terminal device at a time domain position of the control channel. The time domain position of the control channel is a position relative to a time slot boundary, and the time domain position of the control channel is determined based on the time domain position of a broadcast channel carrying the broadcast information, and the time domain position of the broadcast channel is a position relative to a time slot boundary.

[0027] Through the above method, it is possible to implement the network device in the 5G NR system or the future evolved LTE system to indicate the time-frequency position of the control channel to the terminal device, thereby enabling the terminal device to detect the control channel at the time-frequency position of the control channel. Compared with the technical solution in which the network device indicates the time-frequency position of the control channel to the terminal device in the existing LTE system, the above method can reduce the signaling overhead for indicating the time domain position of the control channel, thereby reducing the signaling overhead of the broadcast information.

[0028] In one possible implementation, the pre-configuration of the time domain position of the broadcast channel and the time domain position of the control channel is not arbitrary, and the time domain position of any broadcast channel and the time domain position of the control channel determined based on the time domain position of the broadcast channel need to satisfy one of the following items: the time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel; the time domain position of the control channel is completely identical or partially identical to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel; part of the time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel, and the remaining part of the time domain position of the control channel is completely identical or partially identical to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0029] In one possible implementation, the broadcast information includes information for indicating the subcarrier width used by the resources where the control channel is located, and the time domain position of the control channel is determined based on the time domain position of the broadcast channel carrying the broadcast information. Specifically, the time domain position of the control channel is determined based on the time domain position of the broadcast channel carrying the broadcast information and the subcarrier width used by the resources where the control channel is located.

[0030] In a possible implementation manner, the broadcast information includes indication information for indicating a time domain resource set of a control channel.

[0031] In a possible implementation manner, a reference signal of a broadcast channel and a reference signal of a control channel are QCL; and / or, a reference signal of a broadcast channel and a synchronization signal of a control channel are QCL.

[0032] In a possible implementation, system information is sent to a terminal device, where the system information includes time-frequency resources of other control channels except the control channel.

[0033] In a third aspect, an embodiment of the present application provides a device for receiving control information, which may be a terminal device or a chip in a terminal device. The device may include a processing unit and a transceiver unit. When the device is a terminal device, the processing unit may be a processor, and the transceiver unit may be a transceiver; the terminal device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit so that the terminal device performs the corresponding functions in the above-mentioned first aspect. When the device is a chip in a terminal device, the processing unit may be a processor, and the transceiver unit may be an input / output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit so that the terminal device performs the corresponding functions in the above-mentioned first aspect, and the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the terminal device located outside the chip (for example, a read-only memory, a random access memory, etc.).

[0034] In a fourth aspect, an embodiment of the present application provides a device for sending control information, which may be a network device or a chip in a network device. The device may include a processing unit and a transceiver unit. When the device is a network device, the processing unit may be a processor, and the transceiver unit may be a transceiver; the network device may also include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit so that the network device performs the corresponding functions in the above-mentioned first aspect. When the device is a chip in a network device, the processing unit may be a processor, and the transceiver unit may be an input / output interface, a pin or a circuit, etc.; the processing unit executes the instructions stored in the storage unit so that the network device performs the corresponding functions in the above-mentioned first aspect, and the storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the network device located outside the chip (for example, a read-only memory, a random access memory, etc.).

[0035] In the seventh aspect, an embodiment of the present application provides a computer storage medium, which stores a software program. When the software program is read and executed by one or more processors, it can implement the method provided by the first aspect or any one of the implementations of the first aspect mentioned above, or when the software program is read and executed by one or more processors, it can implement the method provided by the second aspect or any one of the implementations of the second aspect mentioned above.

[0036] In an eighth aspect, an embodiment of the present application provides a computer program product, which includes: a computer program code. When the computer program code is executed by a communication unit, a processing unit or a transceiver, or a processor of a communication device (for example, a terminal device or a network device), the communication device executes a method provided by implementing the first aspect or any one of the implementations of the first aspect, or the communication device executes a method provided by implementing the second aspect or any one of the implementations of the second aspect.

[0037] In a ninth aspect, an embodiment of the present application further provides a communication system, which includes a terminal device and a network device. The terminal device can execute the method provided by the first aspect or any one of the implementations of the first aspect, and the network device can execute the method provided by the second aspect or any one of the implementations of the second aspect.

[0038] In the tenth aspect, a chip system is provided, which includes a processor for supporting a terminal device or a network device to implement the methods described in the above aspects, for example, generating or processing the data and / or information involved in the above methods. In one possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the terminal device or the network device. The chip system can be composed of a chip, or it can include a chip and other discrete devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1A A schematic diagram of a subframe architecture in the prior art;

[0040] Figure 1B A schematic diagram of a network architecture provided in an embodiment of the present application;

[0041] Figure 2 A flowchart of a method for sending and receiving control information provided in an embodiment of the present application;

[0042] Figure 3 A schematic diagram of a subframe architecture provided in an embodiment of the present application;

[0043] Figure 4 A schematic diagram of another subframe architecture provided in an embodiment of the present application;

[0044] Figure 5 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0045] Figure 6 A schematic diagram of the structure of another terminal device provided in an embodiment of the present application;

[0046] Figure 7A schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0047] Figure 8 A schematic diagram of the structure of another network device provided in an embodiment of the present application;

[0048] Fig. 9 A schematic diagram of the structure of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] In the 5G NR system or the future evolved LTE system, the terminal device needs to know the time-frequency position of the control channel when detecting the control channel. If the technical solution of the network device indicating the time-frequency position of the control channel to the terminal device in the existing LTE system is used, there will be a problem of large signaling overhead for indicating the time domain position and frequency domain position of the control channel, which will lead to large signaling overhead of broadcast information. In addition, the technical solution for the network device to indicate the time-frequency position of the control channel to the terminal device has not yet been defined for the 5G NR system or the future evolved LTE system.

[0050] Therefore, the embodiments of the present application provide a method and device for sending and receiving control information, so as to realize that in a 5G NR system or a future evolved LTE system, a network device indicates the time-frequency position of a control channel to a terminal device, and then the terminal device detects the control channel at the time-frequency position of the control channel. Compared with the technical solution in which a network device indicates the time-frequency position of a control channel to a terminal device in an existing LTE system, the technical solution provided in the embodiments of the present application can reduce the signaling overhead for indicating the time domain position of the control channel, thereby reducing the signaling overhead of the broadcast information. Among them, the method and the device are based on the same inventive concept. Since the principles of solving the problem by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0051] In the 5G NR system or the future evolved LTE system, a subframe includes multiple symbols. Depending on the subcarrier width, a subframe can include different numbers of time slots. Figure 1A Taking the structure of a subframe as an example, each time slot includes 14 symbols numbered 0 to 13, wherein when the subcarrier width is 15kHz, the subframe includes one time slot T1, when the subcarrier width is 30kHz, the subframe includes two time slots T2-1 and T2-2, and when the subcarrier width is 60kHz, the subframe includes four time slots T3-1 and T3-4. Figure 1A The symbol in the shaded part may be the time domain position where the synchronization signal block is located, that is, the time domain position available for the broadcast channel to occupy. Figure 1AIn the example, when the subcarrier width is 30kHz, the time domain position of the broadcast channel can be symbols numbered 4 to 11 in time slot T2-1 and symbols numbered 2 to 9 in time slot T2-2. Since there can be at least two time domain positions of the broadcast channel in a time slot, there can be multiple configuration schemes for the time-frequency position of the control channel in a subframe.

[0052] The technical solution provided in the embodiment of the present application can be applied to a variety of systems. The system to which the technical solution provided in the embodiment of the present application is applicable may be a communication system based on non-orthogonal multiple access technology (non-orthogonal multiple access, NOMA), such as a sparse code multiple access (sparse code multiple access, SCMA) system, a low-density signature (low density signature, LDS) system, etc., wherein the SCMA system and the LDS system have other names in the field of communication, which are not listed here. The system to which the technical solution provided in the embodiment of the present application is applicable may also be a multi-carrier transmission system based on NOMA, such as a NOMA system, an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) system, a filter bank multi-carrier (filter bank multi-carrier, FBMC) system, a generalized frequency division multiplexing (generalized frequency division multiplexing, GFDM) system, a filtered orthogonal frequency division multiplexing (filtered orthogonal frequency division multiplexing, F-OFDM) system, etc. The system to which the technical solution provided in the embodiment of the present application is applicable may also be a 5G NR system or a future evolved LTE system. These various systems include terminal equipment and network equipment.

[0053] The technical solution provided in the embodiment of the present application is applicable to the scenario of transmitting control information between a terminal device and a network device. Figure 1B Take the network architecture diagram shown in the figure as an example. Figure 1B Involving terminal device 101 and network device 102, Figure 1B Only three terminal devices 101 and one network device 102 are shown in the figure. In actual application, there may be one or more terminal devices 101 and network devices 102. Among them, the terminal device 101 is within the coverage of the network device 102. The network device 102 is used to provide communication services for the terminal device 101. The terminal device 101 can receive broadcast information, control information, etc. sent by the network device 102. Figure 1BThe arrows shown may be used to indicate uplink transmission or downlink transmission between the terminal device 101 and the network device 102 .

[0054] The terminal device involved in the embodiments of the present application may refer to an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a user device in a 5G system or a user device in a future evolved public land mobile network (PLMN), etc., and the embodiments of the present application are not limited thereto.

[0055] The network device involved in the embodiments of the present application may be a device for communicating with a user device. The network device may be a base station (base transceiver station, BTS) in a global system of mobile communication (GSM) system or code division multiple access (CDMA), or a base station (nodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evolutional nodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device may be a relay station, an access point, an on-board device, a wearable device, a network device in a 5G system, or a network device in a future evolved PLMN network, etc., and the embodiments of the present application are not limited thereto.

[0056] Below, some of the terms involved in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0057] The symbols involved in the embodiments of the present application may be one or a combination of the following symbols: OFDM symbols, SCMA symbols, F-OFDM symbols, NOMA symbols, etc., which are not limited in this embodiment.

[0058] A subframe occupies the time-frequency resources of the entire system bandwidth in the frequency domain and is a time-frequency resource unit of a fixed time length in the time domain, for example, 1 millisecond.

[0059] A time slot refers to a basic time-frequency resource unit. A time slot may include at least one symbol. For example, a time domain may include 7 or 14 consecutive OFDM symbols.

[0060] Subcarrier width is the smallest granularity in the frequency domain resources. For example, in the LTE system, the subcarrier width of a subcarrier can be 15 kHz, and in the 5G system, the subcarrier width can be one of 15kHz, 30kHz, and 60kHz.

[0061] A physical resource block can occupy P consecutive subcarriers in the frequency domain and Q consecutive OFDM symbols in the time domain, where P and Q are both natural numbers greater than or equal to 1. For example, a physical resource block can occupy 12 consecutive subcarriers in the frequency domain and 7 consecutive OFDM symbols in the time domain, where the value of P in this physical resource block can be 12 and the value of Q can be 7; or the value of P can be 12 and the value of Q can be 14; or the value of P can be 12 and the value of Q can be 1.

[0062] A resource unit group can occupy P consecutive subcarriers in the frequency domain and 1 OFDM symbol in the time domain, where P is a natural number greater than 1. For example, a resource unit group can occupy 12 consecutive subcarriers in the frequency domain.

[0063] Control channel unit: one control channel unit may correspond to multiple resource unit groups. The number of resource unit groups corresponding to one control channel unit is fixed, for example, one control channel unit corresponds to 6 resource unit groups.

[0064] The relationship between the broadcast channel and the control channel satisfies one or a combination of the following relationships: the reference signal of the broadcast channel and the reference signal of the control channel are quasi-co-located (QCL), and the reference signal of the broadcast channel and the synchronization signal of the control channel are QCL. Among them, the reference signal of the broadcast channel, the reference signal of the control channel and the synchronization signal of the control channel can be carried in a synchronization signal block (SSblock).

[0065] Multiple means two or more.

[0066] In addition, it should be understood that in the description of the embodiments of the present application, words such as "first" and "second" are only used to distinguish the description purpose, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0067] The embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0068] The embodiment of the present application provides a method for receiving control information, which is applicable to a 5G system or a future evolved LTE system. Figure 2 A flow chart showing a method for receiving control information includes the following steps:

[0069] Step 201: The terminal device receives broadcast information.

[0070] In step 201, the terminal device receives broadcast information sent by the network device through blind detection at at least two predefined time domain positions.

[0071] The predefined at least two time domain positions are time domain positions that may be occupied by a broadcast channel in a subframe. Figure 1A Taking the structure of a subframe as an example, each time slot includes 14 symbols numbered 0 to 13, wherein when the subcarrier width is 15kHz, the subframe includes one time slot T1, when the subcarrier width is 30kHz, the subframe includes two time slots T2-1 and T2-2, and when the subcarrier width is 60kHz, the subframe includes four time slots T3-1 and T3-4. Figure 1A The symbol in the shaded part may be the time domain position where the synchronization signal block is located, that is, the time domain position available for the broadcast channel to occupy. Figure 1A In the example, when the subcarrier width is 30 kHz, the time domain position of the broadcast channel can be symbols numbered 4 to 11 in time slot T2-1 and symbols numbered 2 to 9 in time slot T2-2. There can be at least two time domain positions of the broadcast channel in one time slot.

[0072] Step 202: After receiving the broadcast information, the terminal device determines the time domain position of the broadcast channel carrying the broadcast information from at least two predefined time domain positions.

[0073] The time domain position of the broadcast channel is the position relative to the time slot boundary. The time slot boundary is usually the starting boundary of the time slot (or called the left boundary of the time slot). Of course, in this embodiment, the time slot boundary can also be the ending boundary of the time slot (or called the right boundary of the time slot). For example, if the starting symbol of a time slot is a symbol with a sequence number of 0, then the time slot boundary is usually the left boundary of the symbol with a sequence number of 0. Taking the time slot boundary as an example, which is usually the starting boundary of the time slot, the time domain position of the broadcast channel is the position relative to the time slot boundary. It can be understood that the time domain position of the broadcast channel is the position relative to the starting boundary of the time slot. At this time, if the time domain position of the broadcast channel is on the 4th symbol in the time slot, the time domain position of the broadcast channel is 4 symbols relative to the starting boundary of the time slot.

[0074] In this embodiment, step 202 can be implemented in the following two ways:

[0075] Method 1: The broadcast information received by the terminal device includes time domain location indication information.

[0076] The time domain position indication information may be used to indicate the time domain position of a broadcast channel carrying broadcast information, where the broadcast information is the broadcast information received by the terminal device in step 201, and the time domain position of the broadcast channel carrying the broadcast information is one of at least two predefined time domain positions. For example, the time domain position indication information may be represented by a bit carried by the broadcast information.

[0077] Method 2: The terminal device receives other indication information for indicating the time domain position of the broadcast channel carrying the broadcast information.

[0078] In the second method, other indication information includes but is not limited to first indication information and second indication information, the first indication information is used to indicate the location type of the time domain position of the broadcast channel carrying the broadcast information, and the location type of each time domain position corresponds to at least one time domain position, and the second indication information is used to indicate the time domain position of the broadcast channel used to carry the broadcast information in the location type indicated by the first indication information. The second indication information can be carried in the reference signal of the broadcast channel, for example, the reference signal of the broadcast channel includes the second indication information with a bit sequence length of 3 bits. Or part of the information in the second indication information is carried in the reference signal of the broadcast channel, and the remaining part of the information in the second indication information can be carried in the system information (master information bloc, MIB), for example, the bit sequence length of the second indication information is 6 bits, the reference signal of the broadcast channel includes the first 3 bits of the 6 bits, and the MIB includes 3 bits of information in the 6 bits.

[0079] In step 202, the terminal device receives first indication information sent by the network device, and determines the location type of the time domain location of the broadcast channel carrying the broadcast information from at least two pre-set location types of time domain locations according to the first indication information. The terminal device receives second indication information sent by the network device, and determines the time domain location of the broadcast channel for carrying the broadcast information from at least one time domain location corresponding to the location type of the determined time domain location according to the second indication information.

[0080] For example, assume that the following two time domain location types are preset:

[0081] Position type one: Position type one includes 8 time domain positions, namely, symbols numbered 2 to 5 in time slot n, symbols numbered 6 to 9 in time slot n, symbols numbered 4 to 7 in time slot n+1, symbols numbered 8 to 11 in time slot n+1, symbols numbered 2 to 5 in time slot n+2, symbols numbered 6 to 9 in time slot n+2, symbols numbered 4 to 7 in time slot n+3, and symbols numbered 8 to 11 in time slot n+3.

[0082] Position type 2: Position type 1 includes 64 time domain positions, namely, symbols numbered 2 to 5 in time slot n, symbols numbered 8 to 11 in time slot n, symbols numbered 2 to 5 in time slot n+1, symbols numbered 8 to 11 in time slot n+2, ..., symbols numbered 2 to 5 in time slot n+7, and symbols numbered 8 to 11 in time slot n+7.

[0083] It should be noted that the above-mentioned location type 1 and location type 2 are only examples and do not represent the location types of all time domain locations.

[0084] Based on the above-mentioned location type 1 and location type 2, step 202 is described below in two cases:

[0085] Case 1: Assume that in step 202, the terminal device receives the first indication information sent by the network device, and determines that the location type of the time domain location of the broadcast channel carrying the broadcast information according to the first indication information is location type 1. The terminal device receives the reference signal of the broadcast channel sent by the network device, and the reference signal of the broadcast channel includes the second indication information of 5, then the terminal device determines the 5th time domain location among the 8 time domain locations corresponding to location type 1 as the time domain location of the broadcast channel carrying the broadcast information.

[0086] Case 2: Assume that in step 202, the terminal device receives the first indication information sent by the network device, and determines that the location type of the time domain location of the broadcast channel carrying the broadcast information according to the first indication information is location type 2. The terminal device receives the reference signal and MIB of the broadcast channel sent by the network device, and the second indication information jointly indicated by the reference signal and MIB of the broadcast channel is 32, then the terminal device determines the 32nd time domain location in the 64 time domain locations corresponding to location type 2 as the time domain location of the broadcast channel carrying the broadcast information.

[0087] Step 203: The terminal device determines the time domain position of the control channel according to the time domain position of the broadcast channel.

[0088] In step 203 , the time domain position of the broadcast channel is the time domain position of the broadcast channel carrying the broadcast information determined in step 202 .

[0089] The time domain position of the control channel is the position relative to the time slot boundary. The time slot boundary is usually the starting boundary of the time slot (or the left boundary of the time slot). Of course, in this embodiment, the time slot boundary can also be the ending boundary of the time slot (or the right boundary of the time slot). For example, if the starting symbol of a time slot is a symbol with a sequence number of 0, then the time slot boundary is usually the left boundary of the symbol with a sequence number of 0. Taking the time slot boundary as an example, which is usually the starting boundary of the time slot, the time domain position of the control channel is the position relative to the time slot boundary. It can be understood that the time domain position of the control channel is the position relative to the starting boundary of the time slot. At this time, if the time domain position of the control channel is on the 5th symbol in the time slot, then the time domain position of the control channel is 5 symbols relative to the starting boundary of the time slot.

[0090] In this embodiment, there are multiple methods for the terminal device to determine the time domain position of the control channel according to the time domain position of the broadcast channel. Three of these multiple methods are used as examples to describe step 203:

[0091] The first method: In step 203, the terminal device determines the offset according to the time domain position of the broadcast channel. The offset is the time domain offset of the time domain position of the control channel relative to the time domain position of the broadcast channel carrying the broadcast information. The offset is usually expressed as a shift to the left by a number of symbols or a shift to the right by a number of symbols. The terminal device determines the time domain position of the control channel according to the time domain position of the broadcast channel carrying the broadcast information and the offset, that is, the time domain position obtained by the terminal device adding or subtracting the offset from the time domain position of the broadcast channel carrying the broadcast information is the time domain position of the control channel.

[0092] In the first method, the correspondence between the time domain position of the broadcast channel and the offset determined according to the time domain position of the broadcast channel is pre-set, and the correspondence may be specified by the protocol. In this case, the network device and the terminal device are already aware of the correspondence, or the network device determines the correspondence and sends the correspondence to the terminal device. The correspondence between the time domain position of the broadcast channel and the offset determined according to the time domain position of the broadcast channel is determined when the time domain position of the broadcast channel and the time domain position of the control channel are pre-configured. The time domain position of one broadcast channel corresponds to one offset, or the time domain positions of multiple broadcast channels correspond to one offset, which is not limited in this embodiment. Therefore, in this embodiment, the time domain position of the broadcast channel and the time domain position of the control channel need to be pre-configured, and the pre-configuration of the time domain position of the broadcast channel and the time domain position of the control channel will be explained below.

[0093] For example, assuming that the time domain position of the broadcast channel carrying broadcast information is the symbol numbered 3 in time slot T, and the offset corresponding to the time domain position of the broadcast channel is 1 symbol to the right, then the time domain position of the control channel is the symbol numbered 4 in time slot T.

[0094] Through the first method, the terminal device can determine the time domain position of the control channel based on the time domain position of the broadcast channel and the offset corresponding to the time domain position of the broadcast channel. Therefore, there is no need to carry information for indicating the time domain position of the control channel in the broadcast information, thereby reducing the signaling overhead of the broadcast information.

[0095] The second method: In step 203, the terminal device determines the time domain position of the control channel according to the corresponding relationship between the time domain position of the broadcast channel and the time domain position of the control channel.

[0096] The correspondence between the time domain position of the broadcast channel and the time domain position of the control channel is pre-set, and the correspondence may be specified by the protocol. In this case, the network device and the terminal device are already aware of the correspondence, or the network device determines the correspondence and sends the correspondence to the terminal device. The correspondence between the time domain position of the broadcast channel and the time domain position of the control channel is determined when the time domain position of the broadcast channel and the time domain position of the control channel are pre-configured. Therefore, in this embodiment, the time domain position of the broadcast channel and the time domain position of the control channel need to be pre-configured, and the pre-configuration of the time domain position of the broadcast channel and the time domain position of the control channel will be explained below.

[0097] For example, assume that the correspondence between the time domain position of the broadcast channel and the time domain position of the control channel is shown in Table 1 below, and each row in Table 1 represents a correspondence between the time domain position of the broadcast channel and the time domain position of the control channel. When the terminal device determines through step 202 that the time domain position of the broadcast channel carrying the broadcast information is a symbol numbered 2 to 5, it can be seen from Table 1 below that the time domain position of the control channel is 0 to 1. At this time, it is assumed that the subcarrier width of the broadcast channel and the subcarrier width of the control channel are both 15kHz.

[0098] Table 1

[0099]

[0100] It should be noted that the correspondence between the time domain positions of the broadcast channels and the time domain positions of the control channels shown in Table 1 above is only an example and does not represent the correspondence between the time domain positions of all broadcast channels and the time domain positions of the control channels.

[0101] Through the second method, the terminal device can determine the time domain position of the control channel based on the time domain position of the broadcast channel and the correspondence between the preset time domain position of the broadcast channel and the time domain position of the control channel, without carrying information for indicating the time domain position of the control channel in the broadcast information, thereby reducing the signaling overhead of the broadcast information.

[0102] The third method: in step 203, the terminal device determines the time domain position of the control channel in the time domain resource set according to the time domain position of the broadcast channel.

[0103] When the broadcast information includes indication information for indicating a time domain resource set of a control channel, the terminal device can determine the time domain resource set where the time domain position of the control channel is located based on the indication information, and determine the time domain position of the control channel corresponding to the time domain position of the broadcast channel based on the time domain position of the broadcast channel in the time domain resource set.

[0104] For example, assume that there are optional time domain resource set 0 and optional time domain resource set 1, time domain resource set 0 includes symbol A and symbol B, time domain resource set 1 includes symbol C and symbol D, and the time domain positions of the broadcast channels corresponding to symbols A, B, C, and D are positions 0, 1, 2, and 3 respectively. If the indication information is used to indicate the time domain resource set 0 of the control channel, and the time domain position of the broadcast channel is position 0, then the terminal device determines, based on the indication information and the time domain position of the broadcast channel, that the time domain position of the control channel corresponding to the time domain position of the broadcast channel (i.e., position 0) in the time domain resource set 0 is symbol A.

[0105] Through the third method, the terminal device can determine the time domain position of the control channel in the time domain resource set based on the time domain position of the broadcast channel, without carrying information used to indicate the time domain position of the control channel in the broadcast information, thereby reducing the signaling overhead of the broadcast information.

[0106] In this embodiment, if the subcarrier width of the control channel is taken into consideration when the time domain position of the broadcast channel and the time domain position of the control channel are pre-configured, that is, the time domain position of the broadcast channel and the subcarrier width of the control channel jointly determine the time domain position of the control channel, then the network device will send the subcarrier width of the control channel to the terminal device. At this time, the terminal device determines the time domain position of the control channel based on the time domain position of the broadcast channel carrying the broadcast information and the subcarrier width of the control channel.

[0107] For example, assuming that the correspondence between the time domain position of the broadcast channel and the time domain position of the control channel is as shown in Table 2 below, when the terminal device determines through step 202 that the time domain position of the broadcast channel carrying the broadcast information is the symbol numbered 2 to 5, if the subcarrier width of the control channel is 15kHz, then it can be seen from Table 2 below that the time domain position of the control channel is the symbol numbered 0; if the subcarrier width of the control channel is 30kHz, then it can be seen from Table 2 below that the time domain position of the control channel is the symbol numbered 1.

[0108] Table 2

[0109]

[0110] After the terminal device determines the time domain position of the control channel through step 203, step 204 is executed.

[0111] Step 204: The terminal device detects the control channel at the time domain position of the control channel.

[0112] Before step 204, the terminal device also needs to know the frequency domain position of the control channel, and then the terminal device determines the time-frequency position of the control channel according to the time domain position of the control channel and the frequency domain position of the control channel, so that in step 204, the terminal device detects the control channel at the time-frequency position of the control channel. Among them, the method for the terminal device to detect the control channel at the time-frequency position of the control channel is a prior art and is not described in detail here. The method for the terminal device to determine the frequency domain position of the control channel is a prior art, for example, the terminal device can determine the frequency domain position of the control channel according to the information on the frequency domain position of the control channel included in the broadcast information, which is not described in detail here.

[0113] In this embodiment, the time domain position of the broadcast channel and the time domain position of the control channel need to be pre-configured, and the correspondence between the time domain position of any broadcast channel and the time domain position of the control channel determined according to the time domain position of the broadcast channel is known through this pre-configuration process. Of course, in this embodiment, the time domain position of the broadcast channel and the time domain position of the control channel are not pre-configured arbitrarily, and the time domain position of any broadcast channel and the time domain position of the control channel determined according to the time domain position of the broadcast channel need to satisfy one of the following items:

[0114] The first item: The time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0115] In the first item, the time domain position of the control channel is orthogonal to the time domain position of the broadcast channel, and the time domain position of the control channel is orthogonal to the time domain position of the synchronization signal corresponding to the broadcast channel.

[0116] Item 2: The time domain position of the control channel is completely or partially the same as the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0117] In the second item, the time domain position of the control channel is completely the same as the time domain position of the broadcast channel, or the time domain position of the control channel is partially the same as the time domain position of part of the time domain position of the broadcast channel. The time domain position of the control channel is completely the same as the time domain position of the synchronization signal corresponding to the broadcast channel, or the time domain position of the control channel is partially the same as the time domain position of part of the time domain position of the synchronization signal corresponding to the broadcast channel.

[0118] Item 3: Part of the time domain positions of the control channel are orthogonal to the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel, and the remaining part of the time domain positions of the control channel are completely or partially the same as the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0119] In the third item, the time domain position of the control channel is orthogonal to the time domain position of part of the time domain position of the broadcast channel, and the time domain position of the control channel and the time domain position of the remaining part of the time domain position of the broadcast channel may be completely the same. Or the time domain position of the control channel is orthogonal to the time domain position of part of the time domain position of the broadcast channel, and the time domain position of the control channel and the time domain position of the remaining part of the time domain position of the broadcast channel may be partially the same. Or the time domain position of the control channel is orthogonal to the time domain position of part of the time domain position of the synchronization signal corresponding to the broadcast channel, and the time domain position of the control channel and the time domain position of the remaining part of the time domain position of the synchronization signal corresponding to the broadcast channel may be completely the same. Or the time domain position of the control channel is orthogonal to the time domain position of part of the time domain position of the synchronization signal corresponding to the broadcast channel, and the time domain position of the control channel and the time domain position of the remaining part of the time domain position of the synchronization signal corresponding to the broadcast channel may be partially the same.

[0120] When one of the above items is satisfied between the time domain position of any broadcast channel and the time domain position of the control channel determined based on the time domain position of the broadcast channel, the following example illustrates the correspondence between the time domain position of the broadcast channel and the time domain position of the control channel determined based on the time domain position of the broadcast channel.

[0121] Example 1: Figure 3 Taking the subframe structure shown as an example, three different subcarrier widths are used to describe the corresponding relationship between the time domain position of the broadcast channel and the time domain position of the control channel.

[0122] When the subcarrier width covered by the resources where the broadcast channel and the control channel are located is 15kHz: if the time domain position of the broadcast channel is the symbol numbered between 2 and 5, the time domain position of the control channel is the symbol numbered between 0 and 1; if the time domain position of the broadcast channel carrying the broadcast information is the symbol numbered between 8 and 11, the time domain position of the control channel is the symbol numbered 7.

[0123] When the subcarrier width covered by the resources where the broadcast channel and the control channel are located is 30kHz: if the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 4 to 7 in the first time slot, the time domain position of the control channel is the symbols numbered 0 to 1 in the first time slot; if the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 8 to 11 in the first time slot, the time domain position of the control channel is the symbols numbered 2 to 3 in the first time slot; if the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 2 to 5 in the second time slot, the time domain position of the control channel is the symbol numbered 0 in the second time slot; if the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 6 to 9 in the second time slot, the determined time domain position of the control channel is the symbol numbered 1 in the second time slot.

[0124] When the subcarrier width covered by the resources where the broadcast channel and the control channel are located is 60kHz: if the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 8 to 11 in the first time slot, the time domain position of the control channel is the symbols numbered 0 to 1 in the first time slot; if the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 12 and 13 in the first time slot and the symbols numbered 0 and 1 in the second time slot, the time domain position of the control channel is the symbols numbered 2 to 3 in the first time slot; if the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 6 to 9 in the second time slot, the time domain position of the control channel is the symbols numbered 6 and 7 in the first time slot; if the time domain position of the broadcast channel carrying broadcast information is If the time domain position of the broadcast channel carrying broadcast information is set to symbols numbered 4 to 7 in the third time slot, the time domain position of the determined control channel is the symbol numbered 0 in the third time slot; if the time domain position of the broadcast channel carrying broadcast information is symbols numbered 8 to 11 in the third time slot, the time domain position of the determined control channel is the symbol numbered 1 in the third time slot; if the time domain position of the broadcast channel carrying broadcast information is symbols numbered 12 and 13 in the third time slot and symbols numbered 0 and 1 in the fourth time slot, the time domain position of the determined control channel is the symbol numbered 2 in the third time slot; if the time domain position of the broadcast channel carrying broadcast information is symbols numbered 2 to 5 in the fourth time slot, the time domain position of the determined control channel is the symbol numbered 3 in the third time slot.

[0125] Example 2: Figure 4 Taking the subframe structure shown as an example, the corresponding relationships between the time domain positions of the broadcast channels and the time domain positions of the control channels are as follows, assuming that the subcarrier width covered by the resources where the broadcast channel is located is 30kHz.

[0126] If the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 4 to 7 in the first time slot, the time domain position of the control channel with a covered subcarrier width of 15kHz is the symbol numbered 0, the time domain position of the control channel with a covered subcarrier width of 30kHz is the symbol numbered 0 in the first time slot, and the time domain position of the control channel with a covered subcarrier width of 60kHz is the symbols numbered 0 and 1 in the first time slot.

[0127] If the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 8 to 11 in the first time slot, the time domain position of the control channel with a covered subcarrier width of 15kHz is the symbol numbered 1, the time domain position of the control channel with a covered subcarrier width of 30kHz is the symbols numbered 2 to 3 in the first time slot, and the time domain position of the control channel with a covered subcarrier width of 60kHz is the symbols numbered 2 to 3 in the first time slot.

[0128] If the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 2 to 5 in the second time slot, then the time domain position of the control channel covering the upper half of the frequency band with a subcarrier width of 15kHz is the symbol numbered 7, the time domain position of the control channel covering the subcarrier width of 30kHz is the symbol numbered 0 in the second time slot, and the time domain position of the control channel covering the subcarrier width of 60kHz is the symbol numbered 1 in the third time slot.

[0129] If the time domain position of the broadcast channel carrying broadcast information is the symbols numbered 6 to 9 in the second time slot, then the time domain position of the control channel covering the lower half of the frequency band with a subcarrier width of 15kHz is the symbol numbered 7, the time domain position of the control channel covering the subcarrier width of 30kHz is the symbol numbered 1 in the second time slot, and the time domain position of the control channel covering the subcarrier width of 60kHz is the symbol numbered 1 in the third time slot.

[0130] In one possible implementation, a terminal device receives system information, which includes time-frequency resources of other control channels except the control channel, and the system information includes but is not limited to time domain position indication information. The time domain position indication information here is similar to the time domain position indication information in step 202 above, and the relevant description of the time domain position indication information in step 202 is not repeated here. Through the above method, the terminal device can detect the control channel at the time domain position of the control channel, so that rate matching can be performed when the terminal device detects the control channel, thereby avoiding the failure of control information transmission due to interference from other control channels and the transmission performance of the control information.

[0131] The embodiment of the present application provides a method for receiving control information, where a network device indicates the time-frequency position of a control channel to a terminal device, and the terminal device detects the control channel at the time-frequency position of the control channel. Compared with the technical solution in which a network device indicates the time-frequency position of a control channel to a terminal device in an existing LTE system, the technical solution provided by the embodiment of the present application can reduce the signaling overhead for indicating the time domain position of the control channel, thereby reducing the signaling overhead of broadcast information.

[0132] Based on the same inventive concept, the present application also provides a terminal device, which can implement Figure 2 The method provided by the corresponding embodiment is performed by the terminal device. Figure 5 As shown, the terminal device includes: a transceiver unit 501 and a processing unit 502, wherein:

[0133] The transceiver unit 501 is used to receive broadcast information.

[0134] The processing unit 502 is configured to determine the time domain position of the broadcast channel carrying the broadcast information received by the transceiver unit 501 in at least two predefined time domain positions, where the time domain position of the broadcast channel is a position relative to a time slot boundary; determine the time domain position of the control channel according to the time domain position of the broadcast channel, where the time domain position of the control channel is a position relative to the time slot boundary;

[0135] The transceiver unit 501 is further configured to detect the control channel at the time domain position of the control channel.

[0136] In a possible implementation, when the processing unit 502 determines the time domain position of the control channel according to the time domain position of the broadcast channel, it is specifically configured to: determine an offset according to the time domain position of the broadcast channel, and determine the time domain position of the control channel according to the offset.

[0137] In a possible implementation, when the processing unit 502 determines the time domain position of the control channel according to the time domain position of the broadcast channel, it is specifically configured to: determine the time domain position of the control channel according to the correspondence between the time domain position of the broadcast channel and the time domain position of the control channel.

[0138] In one possible implementation, the time domain position of the broadcast channel and the time domain position of the control channel determined based on the time domain position of the broadcast channel satisfy one of the following items: the time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel; the time domain position of the control channel is completely identical or partially identical to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel; part of the time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel, and the remaining part of the time domain position of the control channel is completely identical or partially identical to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0139] In a possible implementation, the broadcast information includes information indicating a subcarrier width used by the resource where the control channel is located. When the processing unit 502 determines the time domain position of the control channel according to the time domain position of the broadcast channel, it is specifically configured to: determine the time domain position of the control channel according to the time domain position of the broadcast channel and the subcarrier width used by the resource where the control channel is located.

[0140] In a possible implementation, the broadcast information includes indication information for indicating a time domain resource set of the control channel. When the processing unit 502 determines the time domain position of the control channel according to the time domain position of the broadcast channel, it is specifically configured to: determine the time domain position of the control channel in the time domain resource set according to the time domain position of the broadcast channel.

[0141] In a possible implementation manner, a reference signal of a broadcast channel and a reference signal of a control channel are QCL; and / or, a reference signal of a broadcast channel and a synchronization signal of a control channel are QCL.

[0142] In a possible implementation, the transceiver unit 501 is further configured to receive system information, where the system information includes time-frequency resources of other control channels except the control channel.

[0143] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. Each functional unit in the embodiments of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0144] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

[0145] Based on the same inventive concept, the present application also provides a terminal device. Figure 2 The method performed by the terminal device in the method provided in the corresponding embodiment may be Figure 5 The same terminal equipment as shown. Figure 6 As shown, the terminal device includes: a processor 601, a transceiver 602 and a memory 603, wherein:

[0146] The processor 601 is used to read the program in the memory 603 and execute the following process:

[0147] The processor 601 is configured to receive broadcast information through the transceiver 602 .

[0148] The processor 601 is further configured to determine a time domain position of a broadcast channel carrying broadcast information received by the transceiver 602 in at least two predefined time domain positions, where the time domain position of the broadcast channel is a position relative to a time slot boundary; determine a time domain position of a control channel according to the time domain position of the broadcast channel, where the time domain position of the control channel is a position relative to the time slot boundary;

[0149] The processor 601 is further configured to detect the control channel at the time domain position of the control channel through the transceiver 602 .

[0150] The transceiver 602 is used to receive and send data under the control of the processor 601; the transceiver 602 may also be a communication module, which includes a communication interface for receiving data and / or sending data.

[0151] In a possible implementation, when the processor 601 determines the time domain position of the control channel according to the time domain position of the broadcast channel, it is specifically configured to: determine an offset according to the time domain position of the broadcast channel, and determine the time domain position of the control channel according to the offset.

[0152] In a possible implementation, when the processor 601 determines the time domain position of the control channel according to the time domain position of the broadcast channel, it is specifically configured to: determine the time domain position of the control channel according to the correspondence between the time domain position of the broadcast channel and the time domain position of the control channel.

[0153] In one possible implementation, the time domain position of the broadcast channel and the time domain position of the control channel determined based on the time domain position of the broadcast channel satisfy one of the following items: the time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel; the time domain position of the control channel is completely identical or partially identical to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel; part of the time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel, and the remaining part of the time domain position of the control channel is completely identical or partially identical to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0154] In a possible implementation, the broadcast information includes information indicating a subcarrier width used by the resource where the control channel is located. When the processor 601 determines the time domain position of the control channel according to the time domain position of the broadcast channel, it is specifically configured to: determine the time domain position of the control channel according to the time domain position of the broadcast channel and the subcarrier width used by the resource where the control channel is located.

[0155] In a possible implementation, the broadcast information includes indication information for indicating a time domain resource set of the control channel. When the processor 601 determines the time domain position of the control channel according to the time domain position of the broadcast channel, it is specifically configured to: determine the time domain position of the control channel in the time domain resource set according to the time domain position of the broadcast channel.

[0156] In a possible implementation manner, a reference signal of a broadcast channel and a reference signal of a control channel are QCL; and / or, a reference signal of a broadcast channel and a synchronization signal of a control channel are QCL.

[0157] In a possible implementation manner, the processor 601 is further configured to receive system information through the transceiver 602, where the system information includes time-frequency resources of other control channels except the control channel.

[0158] The processor 601, the transceiver 602 and the memory 603 are interconnected via a bus; the bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc.

[0159] Among them, Figure 6 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 601 and memory represented by memory 603. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 602 may be a plurality of components, namely, a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 601 when performing operations.

[0160] Optionally, the processor 601 may be a central processing unit, an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or a complex programmable logic device (CPLD).

[0161] Based on the same inventive concept, the embodiment of the present application also provides a network device, which can implement Figure 2 The method provided by the corresponding embodiment is a method performed by a network device. Figure 7 As shown, the network device includes: a transceiver unit 701, wherein:

[0162] The transceiver unit 701 is used to send broadcast information; send a control channel to the terminal device at the time domain position of the control channel;

[0163] The time domain position of the control channel is relative to the time slot boundary, and the time domain position of the control channel is determined based on the time domain position of the broadcast channel carrying broadcast information, and the time domain position of the broadcast channel is relative to the time slot boundary.

[0164] In a possible implementation manner, the time domain position of the broadcast channel and the time domain position of the control channel determined according to the time domain position of the broadcast channel satisfy one of the following items:

[0165] The time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel;

[0166] The time domain position of the control channel is completely or partially the same as the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel;

[0167] Part of the time domain positions of the control channel are orthogonal to the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel, and the remaining part of the time domain positions of the control channel are completely or partially the same as the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0168] In a possible implementation manner, the broadcast information includes information for indicating a subcarrier width used by a resource where a control channel is located;

[0169] The time domain position of the control channel is determined based on the time domain position of the broadcast channel carrying the broadcast information, specifically:

[0170] The time domain position of the control channel is determined based on the time domain position of the broadcast channel carrying the broadcast information and the subcarrier width used by the resource where the control channel is located.

[0171] In a possible implementation manner, the broadcast information includes indication information for indicating a time domain resource set of a control channel.

[0172] In a possible implementation manner, a reference signal of a broadcast channel and a reference signal of a control channel are QCL; and / or, a reference signal of a broadcast channel and a synchronization signal of a control channel are QCL.

[0173] In a possible implementation, the transceiver unit 701 is further configured to send system information to the terminal device, where the system information includes time-frequency resources of other control channels except the control channel.

[0174] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. Each functional unit in the embodiments of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0175] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0176] Based on the same inventive concept, the embodiment of the present application also provides a network device, which adopts Figure 2 The method performed by the network device in the method provided in the corresponding embodiment may be Figure 7 The same network devices as shown. Figure 8 As shown, the network device includes: a processor 801, a transceiver 802 and a memory 803, wherein:

[0177] The processor 801 is used to read the program in the memory 803 and execute the following process:

[0178] Processor 801 is used to send broadcast information through transceiver 802; send a control channel to the terminal device at the time domain position of the control channel, wherein the time domain position of the control channel is relative to the time slot boundary, and the time domain position of the control channel is determined based on the time domain position of the broadcast channel carrying the broadcast information, and the time domain position of the broadcast channel is relative to the time slot boundary.

[0179] The transceiver 802 is used to receive and send data under the control of the processor 801; the transceiver 802 may also be a communication module, which includes a communication interface for receiving data and / or sending data.

[0180] In a possible implementation manner, the time domain position of the broadcast channel and the time domain position of the control channel determined according to the time domain position of the broadcast channel satisfy one of the following items:

[0181] The time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel;

[0182] The time domain position of the control channel is completely or partially the same as the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel;

[0183] Part of the time domain positions of the control channel are orthogonal to the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel, and the remaining part of the time domain positions of the control channel are completely or partially the same as the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

[0184] In a possible implementation manner, the broadcast information includes information for indicating a subcarrier width used by a resource where a control channel is located;

[0185] The time domain position of the control channel is determined based on the time domain position of the broadcast channel carrying the broadcast information, specifically:

[0186] The time domain position of the control channel is determined based on the time domain position of the broadcast channel carrying the broadcast information and the subcarrier width used by the resource where the control channel is located.

[0187] In a possible implementation manner, the broadcast information includes indication information for indicating a time domain resource set of a control channel.

[0188] In a possible implementation manner, a reference signal of a broadcast channel and a reference signal of a control channel are QCL; and / or, a reference signal of a broadcast channel and a synchronization signal of a control channel are QCL.

[0189] In a possible implementation, the processor 801 is further configured to send system information to the terminal device through the transceiver 802, where the system information includes time-frequency resources of other control channels except the control channel.

[0190] The processor 801, the transceiver 802 and the memory 803 are connected to each other via a bus, which may be a PCI bus or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc.

[0191] Among them, Figure 8In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 801 and memory represented by memory 803. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 802 may be a plurality of components, namely, a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 when performing operations.

[0192] Optionally, the processor 801 may be a central processing unit, an ASIC, an FPGA or a CPLD.

[0193] A computer storage medium is also provided in an embodiment of the present application, in which a software program is stored. When the software program is read and executed by one or more processors, the method for receiving control information executed by the terminal device in the above embodiment can be implemented, or when the software program is read and executed by one or more processors, the method for sending control information executed by the network device in the above embodiment can be implemented.

[0194] In an embodiment of the present application, a device for receiving control information is also provided, which includes a chip, which is used to execute the method executed by the terminal device in the above-mentioned method for receiving control information, and the chip executes the method for the terminal device to receive data and / or data in the above-mentioned method for receiving control information through a transceiver (or communication module), or the chip is used to execute the method executed by the network device in the above-mentioned method for sending control information, and the chip executes the method for the network device to receive data and / or data in the above-mentioned method for sending control information through a transceiver (or communication module).

[0195] An embodiment of the present application provides a computer program product containing instructions, which, when executed on a computer, enables the computer to execute the method for receiving control information executed by a terminal device in the above embodiment, or enables the computer to execute the method for sending control information executed by a network device in the above embodiment.

[0196] Based on the same inventive concept, the embodiment of the present application also provides a communication system, such as Fig. 9 As shown, the communication system includes a terminal device 901 and a network device 902. The terminal device 901 is used to execute Figure 2 In the method provided in the corresponding embodiment, the terminal device 901 may be a method executed by the terminal device. Figure 5 or Figure 6 The same terminal device as shown; network device 902 is used to execute Figure 2 In the method provided in the corresponding embodiment, the network device 902 may be a method executed by a network device. Figure 7 or Figure 8 A device that is the same as the network device shown; through this communication system, a method for receiving control information and a method for sending control information provided in an embodiment of the present application can be implemented.

[0197] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for receiving control information, characterized in that: include: receiving broadcast information carried by a broadcast channel, wherein a time domain position of the broadcast channel is one of at least two time domain positions predefined in at least one time slot; Determining the time domain position of the control channel according to the time domain position of the broadcast channel and the correspondence between the time domain position of the broadcast channel and the time domain position of the control channel; Control information is received at a time domain location of the control channel.

2. A method for sending control information, characterized in that: include: Sending broadcast information carried by a broadcast channel, wherein the time domain position of the broadcast channel is one of at least two time domain positions predefined in at least one time slot; Determining the time domain position of the control channel according to the time domain position of the broadcast channel and the correspondence between the time domain position of the broadcast channel and the time domain position of the control channel; Control information is sent at a time domain position of the control channel.

3. A method for sending control information, characterized in that: include: Sending broadcast information on a broadcast channel, the broadcast information including indication information for indicating a time domain resource set of a control channel, wherein the time domain position of the broadcast channel is one of at least two time domain positions predefined in at least one time slot; The control information is sent at a time domain position of a control channel, where the time domain position of the control channel is determined in the control channel time domain resource set according to the time domain position of the broadcast channel.

4. A method for determining a control channel, characterized in that: include: Determining the time domain position of the control channel in the control channel time domain resource set according to the time domain position of the broadcast channel; The broadcast channel is used to send broadcast information, the broadcast information includes indication information used to indicate the control channel time domain resource set, and the time domain position of the broadcast channel is one of at least two time domain positions predefined in at least one time slot; The control channel is used to send control information.

5. A device for receiving control information, characterized in that: include: a transceiver unit configured to receive broadcast information carried by a broadcast channel, wherein a time domain position of the broadcast channel is one of at least two time domain positions predefined in at least one time slot; a processing unit configured to determine the time domain position of the control channel according to the time domain position of the broadcast channel and the correspondence between the time domain position of the broadcast channel and the time domain position of the control channel; The transceiver unit is further configured to: receive control information at a time domain position of the control channel.

6. A device for sending control information, characterized in that: include: a transceiver unit configured to send broadcast information carried by a broadcast channel, wherein the time domain position of the broadcast channel is one of at least two time domain positions predefined in at least one time slot; a processing unit configured to determine the time domain position of the control channel according to the time domain position of the broadcast channel and the correspondence between the time domain position of the broadcast channel and the time domain position of the control channel; The transceiver unit is further configured to: send control information at a time domain position of the control channel.

7. A device for sending control information, characterized in that: include: a transceiver unit configured to send broadcast information on a broadcast channel, wherein the broadcast information includes indication information for indicating a time domain resource set of a control channel, and the time domain position of the broadcast channel is one of at least two time domain positions predefined in at least one time slot; The transceiver unit is further configured to: send control information at a time domain position of a control channel, where the time domain position of the control channel is determined in the control channel time domain resource set according to the time domain position of the broadcast channel.

8. A device for determining a control channel, characterized in that: include: A processing unit, configured to determine a time domain position of a control channel in a control channel time domain resource set according to a time domain position of a broadcast channel; The broadcast channel is used to send broadcast information, the broadcast information includes indication information used to indicate the control channel time domain resource set, and the time domain position of the broadcast channel is one of at least two time domain positions predefined in at least one time slot; The control channel is used to send control information.

9. The method according to claim 3 or 4, or the device according to claim 7 or 8, characterized in that: The time domain position of the control channel is determined in the control channel time domain resource set according to the time domain position of the broadcast channel and the corresponding relationship between the time domain position of the broadcast channel and the time domain position of the control channel.

10. The method according to any one of claims 1 to 4 and 9, or the device according to any one of claims 5 to 9, characterized in that: The time domain position of the broadcast channel is the position of the broadcast channel relative to the start symbol of the first time slot, and the time domain position of the control channel is the position of the control channel relative to the start symbol of the second time slot.

11. The method according to any one of claims 1 to 4, 9 to 10, or the device according to any one of claims 5 to 10, characterized in that: The subcarrier width of the broadcast channel is 30kHz, and the subcarrier width of the control channel is 30kHz. Wherein, when the time domain position of the synchronization signal block where the broadcast channel is located is the symbol with sequence number 2 to 5 in the time slot, the time domain position of the control channel is the symbol with sequence number 0 in the time slot; and / or When the time domain position of the synchronization signal block is the symbol numbered 6 to 9 in the time slot, the time domain position of the control channel is the symbol numbered 1 in the time slot.

12. The method according to claim 11, or the device according to claim 11, characterized in that: The control channel time domain resource set includes a symbol with a sequence number of 0 and a symbol with a sequence number of 1 in a time slot.

13. The method according to any one of claims 1 to 4, 9 to 10, or the device according to any one of claims 5 to 10, characterized in that: The subcarrier width of the broadcast channel is 30kHz, and the subcarrier width of the control channel is 30kHz. Wherein, when the time domain position of the synchronization signal block where the broadcast channel is located is the symbol numbered 4 to 7 in the time slot, the time domain position of the control channel is the symbol numbered 0 to 1 in the time slot; and / or When the time domain position of the synchronization signal block is the symbols numbered 8 to 11 in the time slot, the time domain position of the control channel is the symbols numbered 2 to 3 in the time slot.

14. The method according to claim 13, or the device according to claim 13, characterized in that: The control channel time domain resource set includes symbols with sequence numbers from 0 to 1 and symbols with sequence numbers from 2 to 3 in a time slot.

15. The method according to any one of claims 1 to 4, 9 to 10, or the device according to any one of claims 5 to 10, characterized in that: The subcarrier width of the broadcast channel is 15kHz, and the subcarrier width of the control channel is 15kHz. Wherein, when the time domain position of the synchronization signal block where the broadcast channel is located is the symbol numbered 2 to 5 in the time slot, the time domain position of the control channel is the symbol numbered 0 to 1 in the time slot.

16. The method according to any one of claims 1 to 4, 9 to 10, or the device according to any one of claims 5 to 10, characterized in that: The subcarrier width of the broadcast is 15kHz, and the subcarrier width of the control channel is 15kHz. Wherein, when the time domain position of the synchronization signal block where the broadcast channel is located is the symbol numbered 2 to 5 in the time slot, the time domain position of the control channel is the symbol numbered 0 in the time slot.

17. The method according to any one of claims 1 to 4, 9 to 16, or the device according to any one of claims 5 to 16, characterized in that: The time domain position of the control channel is orthogonal to the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel; or, The time domain position of the control channel is completely or partially the same as the time domain position of the broadcast channel and the synchronization signal corresponding to the broadcast channel; or, Part of the time domain positions of the control channel are orthogonal to the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel, and the remaining part of the time domain positions of the control channel are completely or partially the same as the time domain positions of the broadcast channel and the synchronization signal corresponding to the broadcast channel.

18. The method according to any one of claims 1 to 4, 9 to 17, or the device according to any one of claims 5 to 17, characterized in that: The reference signal of the broadcast channel and the reference signal of the control channel are quasi co-located QCL.

19. A computer-readable storage medium, characterized in that: The computer-readable storage medium comprises instructions, and when the instructions are executed by a processor, the method according to any one of claims 1 to 4 and 9 to 18 is implemented.

20. A communication device, characterized in that: The communication device includes a processor and a storage medium, wherein the storage medium stores instructions. When the instructions are executed by the processor, the method according to any one of claims 1 to 4 and 9 to 18 is implemented.

21. A computer program product, characterized in that The computer program product comprises instructions, which, when executed by a processor, enable the method according to any one of claims 1 to 4, 9 to 18 to be implemented.

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