Channel configuration method and device

Abstract

The embodiment of the present application provides a channel configuration method and device, relates to the field of communication, and the method comprises the following steps: sending indication information, wherein the indication information is used for indicating that the OFDM symbol quantity of a data region of a subframe of a first carrier is equal to the OFDM symbol quantity of the subframe; and sending control information and data information, wherein the control information is used for indicating at least one control parameter of terminal equipment receiving and analyzing the data information, the control information is located in a control region of a subframe of a second carrier, and the data information is located in a data region of a subframe of the first carrier and the second carrier. The present application can effectively improve the air interface resource utilization rate.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communication, and in particular, to a channel configuration method and device. BACKGROUND

[0002] At present, the cross-carrier technology in the prior art mainly carries physical downlink control channels (PDCCH) corresponding to multiple carriers on a certain carrier to invoke other carriers. However, in the case that there is no PDCCH on the invoked carrier, the orthogonal frequency division multiplexing (OFDM) symbols occupied by the control region are still occupied, causing waste of air interface resources. SUMMARY

[0003] The present application provides a channel configuration method and device, which can improve the resource utilization rate of the channel.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] In a first aspect, the embodiments of the present application provide a channel configuration method, comprising: a network device sending indication information, the indication information being used to indicate that the number of OFDM symbols of a data region of a subframe of a first carrier is equal to the number of OFDM symbols of the subframe. The network device sends control information and data information, the control information being used to indicate at least one control parameter of the terminal device receiving and analyzing the data information, the control information being located in a control region of a subframe of a second carrier, and the data information being located in the data region of the subframe of the first carrier and the second carrier.

[0006] Based on the above-mentioned manner, the data information is transmitted through the carrier not including the control region, thereby improving the utilization rate of the air interface resources.

[0007] In a possible implementation manner, the indication information is located in the subframe of the first carrier.

[0008] Based on the above-mentioned manner, an indication manner is realized to inform each terminal device that the first carrier works in the mode without the control region.

[0009] In a possible implementation manner, the indication information is CFI information, and the indication information is a preset value, which is used to indicate that the number of OFDM symbols of the data region of the subframe where the indication information is located is equal to the number of OFDM symbols of the subframe.

[0010] Based on the above-mentioned manner, an indication manner is realized to inform each terminal device that the first carrier works in the mode without the control region through the physical layer signaling CFI information.

[0011] In a possible implementation, the indication information is control format indication (CFI) information, and the indication information is a preset value, used to indicate that the number of OFDM symbols of the data region of a subframe after the Nth subframe after the subframe where the indication information is located is equal to the number of OFDM symbols of the subframe.

[0012] Based on the above manner, an indication manner is implemented, in which MAC layer signaling is used to notify each terminal device that the first carrier works in the control region free mode.

[0013] In a possible implementation, the indication information is located in radio resource control (RRC) signaling.

[0014] Based on the above manner, an indication manner is implemented, in which RRC layer signaling is used to notify each terminal device that the first carrier works in the control region free mode.

[0015] In a second aspect, an embodiment of the present application provides a channel configuration method, including: a terminal device receives indication information, the indication information being used to indicate that the number of OFDM symbols of a data region of a subframe of a first carrier is equal to the number of OFDM symbols of the subframe. Then, the terminal device receives control information and data information, the control information being used to indicate at least one control parameter of the terminal device receiving and analyzing the data information, the control information being located in a control region of a subframe of a second carrier, and the data information being located in the data region of the subframe of the first carrier and the subframe of the second carrier. In addition, the terminal device analyzes the data information in response to the received indication information and the control information, to obtain the data information.

[0016] Based on the above manner, data information is transmitted through a carrier that does not include a control region, so that the utilization rate of air interface resources is improved.

[0017] In a possible implementation, the indication information is located in a subframe of the first carrier.

[0018] In a possible implementation, the indication information is control format indication (CFI) information, and the indication information is a preset value, used to indicate that the number of OFDM symbols of the data region of a subframe after the Nth subframe after the subframe where the indication information is located is equal to the number of OFDM symbols of the subframe.

[0019] In a possible implementation, the indication information is control format indication (CFI) information, and the indication information is a preset value, used to indicate that the number of OFDM symbols of the data region of a subframe after the Nth subframe after the subframe where the indication information is located is equal to the number of OFDM symbols of the subframe.

[0020] In a possible implementation, the indication information is located in radio resource control (RRC) signaling.

[0021] In a third aspect, an embodiment of the present application provides a network device, comprising: a memory and a processor, the memory and the processor being coupled; the memory storing program instructions, the program instructions being executed by the processor to enable the network device to perform: sending indication information, the indication information being used to indicate that the number of OFDM symbols of a data region of a subframe of a first carrier is equal to the number of OFDM symbols of the subframe; and sending control information and data information, the control information being used to indicate at least one control parameter of the terminal device for receiving and analyzing the data information, the control information being located in a control region of a subframe of a second carrier, and the data information being located in the data region of the subframe of the first carrier and the second carrier.

[0022] In a fourth aspect, an embodiment of the present application provides a terminal device, comprising: a memory and a processor, the memory and the processor being coupled; the memory storing program instructions, the program instructions being executed by the processor to enable the terminal device to perform: receiving indication information, the indication information being used to indicate that the number of OFDM symbols of a data region of a subframe of a first carrier is equal to the number of OFDM symbols of the subframe; receiving control information and data information, the control information being used to indicate at least one control parameter of the terminal device for receiving and analyzing the data information, the control information being located in a control region of a subframe of a second carrier, and the data information being located in the data region of the subframe of the first carrier and the second carrier; and in response to the received indication information and the control information, analyzing the data information to obtain the data information.

[0023] In a fifth aspect, an embodiment of the present application provides a chip, comprising: at least one processor and an interface; the interface being used to send indication information, the indication information being used to indicate that the number of OFDM symbols of a data region of a subframe of a first carrier is equal to the number of OFDM symbols of the subframe; and the interface being used to send control information and data information, the control information being used to indicate at least one control parameter of the terminal device for receiving and analyzing the data information, the control information being located in a control region of a subframe of a second carrier, and the data information being located in the data region of the subframe of the first carrier and the second carrier.

[0024] In a sixth aspect, an embodiment of the present application provides a chip, comprising: at least one processor and an interface; the interface being used to input indication information to the processor, the indication information being used to indicate that the number of OFDM symbols of a data region of a subframe of a first carrier is equal to the number of OFDM symbols of the subframe; the interface being used to input control information and data information to the processor, the control information being used to indicate at least one control parameter of the terminal device for receiving and analyzing the data information, the control information being located in a control region of a subframe of a second carrier, and the data information being located in the data region of the subframe of the first carrier and the second carrier; and the processor being used to analyze the data information based on the indication information and the control information to obtain the data information.

[0025] In a seventh aspect, an embodiment of the present application provides an apparatus, comprising a transceiver module configured to send indication information, the indication information being used to indicate that a number of OFDM symbols of a data region of a subframe of a first carrier is equal to a number of OFDM symbols of the subframe; and the transceiver module is further configured to send control information and data information, the control information being used to indicate at least one control parameter for the terminal device to receive and parse the data information, the control information being located in a control region of a subframe of a second carrier, and the data information being located in the data region of the subframe of the first carrier and the subframe of the second carrier.

[0026] In an eighth aspect, an embodiment of the present application provides an apparatus, comprising a transceiver module and a processing module, the transceiver module is configured to receive indication information, the indication information being used to indicate that a number of OFDM symbols of a data region of a subframe of a first carrier is equal to a number of OFDM symbols of the subframe; and the transceiver module is further configured to receive control information and data information, the control information being used to indicate at least one control parameter for the terminal device to receive and parse the data information, the control information being located in a control region of a subframe of a second carrier, and the data information being located in the data region of the subframe of the first carrier and the subframe of the second carrier; and the processing module is configured to parse the data information in response to the received indication information and the control information, to obtain the data information.

[0027] In a ninth aspect, an embodiment of the present application provides a computer readable medium, configured to store a computer program, the computer program comprising instructions for executing the method in the first aspect or any possible implementation manner of the first aspect.

[0028] In a tenth aspect, an embodiment of the present application provides a computer readable medium, configured to store a computer program, the computer program comprising instructions for executing the method in the second aspect or any possible implementation manner of the second aspect.

[0029] In an eleventh aspect, an embodiment of the present application provides a computer program, the computer program comprising instructions for executing the method in the first aspect or any possible implementation manner of the first aspect.

[0030] In a twelfth aspect, an embodiment of the present application provides a computer program, the computer program comprising instructions for executing the method in the second aspect or any possible implementation manner of the second aspect.

[0031] In a thirteenth aspect, an embodiment of the present application provides a communication system, the system comprising the terminal device and the network device in the first aspect and the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0033] Figure 1 Fig. 1 is a schematic diagram of a communication system provided by an embodiment of the present application;

[0034] Figure 2a Fig. 3 is a schematic diagram of a structure of a base station;

[0035] Figure 2b Fig. 5 is a schematic diagram of a structure of a terminal;

[0036] Figure 3 Fig. 7 is a schematic diagram of a structure of a subframe;

[0037] Figure 4 Fig. 9 is a schematic diagram of a cross-carrier scheduling mode;

[0038] Figure 5 Fig. 11 is a flowchart of a channel configuration method provided by an embodiment of the present application;

[0039] Figure 6 Fig. 15 is a flowchart of a channel configuration method provided by an embodiment of the present application;

[0040] Figure 7 Fig. 17 is a schematic diagram of a scheduling mode provided by an embodiment of the present application;

[0041] Figure 8 Fig. 19 is a flowchart of a channel configuration method provided by an embodiment of the present application;

[0042] Figure 9 Fig. 23 is a flowchart of a channel configuration method provided by an embodiment of the present application;

[0043] Figure 10 Fig. 25 is a schematic diagram of a structure of a network device provided by an embodiment of the present application;

[0044] Figure 11 Fig. 27 is a schematic diagram of a structure of a network device provided by an embodiment of the present application;

[0045] Figure 12 Fig. 29 is a schematic diagram of a structure of an apparatus provided by an embodiment of the present application. DETAILED DESCRIPTION

[0046] With reference to the drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of the present application.

[0047] The term "and / or" used herein is only used to describe an association relationship of associated objects, and indicates that three relationships can exist, for example, A and / or B can represent three cases of A existing alone, A and B existing together, and B existing alone.

[0048] The terms "first" and "second" and the like in the description and claims of the embodiments of the present application are used to distinguish different objects, and are not used to describe a specific order of the objects. For example, the first target object and the second target object are used to distinguish different target objects, and are not used to describe a specific order of the target objects.

[0049] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of the words "exemplary" or "for example" is intended to present the relevant concept in a specific manner.

[0050] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. For example, a plurality of processing units means two or more processing units; a plurality of systems means two or more systems.

[0051] In the present application, the network device can be referred to as a base station, and the terminal device can be referred to as a user equipment (UE).

[0052] Before the technical solutions of the embodiments of the present application are described, the communication system of the embodiments of the present application will be described first with reference to the drawings. Referring to Figure 1 A communication system is provided in the embodiments of the present application. The communication system includes a base station, UE1, UE2, and UE3. It should be noted that in actual applications, the number of base stations and UEs can be one or more, Figure 1 The number of base stations and UEs in the illustrated communication system is only an adaptive example, and the present application does not limit this.

[0053] The communication system described above can be used for supporting fourth generation (4G) access technologies, such as long term evolution (LTE) access technologies; or the communication system can also support fifth generation (5G) access technologies, such as new radio (NR) access technologies; or the communication system can also be used for supporting third generation (3G) access technologies, such as universal mobile telecommunications system (UMTS) access technologies; or the communication system can also be used for supporting second generation (2G) access technologies, such as global system for mobile communications (GSM) access technologies; or the communication system can also be used for supporting a communication system of multiple wireless technologies, such as supporting LTE technologies and NR technologies. In addition, the communication system can also be applicable to a narrow band internet of things system (NB-IoT), an enhanced data rates for GSM evolution system (EDGE), a wideband code division multiple access system (WCDMA), a code division multiple access 2000 system (CDMA2000), a time division-synchronization code division multiple access system (TD-SCDMA), a long term evolution system (LTE), and a future-oriented communication technology.

[0054] and Figure 1The base station in the communication system can be used to support terminal access, for example, can be a base transceiver station (BTS) and a base station controller (BSC) in a 2G access technology communication system, a node B (Node B) and a radio network controller (RNC) in a 3G access technology communication system, an evolved node B (eNB) in a 4G access technology communication system, a next generation node B (gNB) in a 5G access technology communication system, a transmission reception point (TRP), a relay node, an access point (AP), and the like. For convenience of description, in all embodiments of the present application, the device providing wireless communication function for the terminal is collectively referred to as a network device or a base station.

[0055] Figure 1 The terminal in the communication system can be a device providing voice or data connectivity for a user, for example, also can be called a mobile station, a subscriber unit, a station, terminal equipment (TE), and the like. The terminal can be a cellular phone, a personal digital assistant (PDA), a wireless modem, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a pad, and the like. With the development of wireless communication technology, devices that can access the communication system, can communicate with the network side of the communication system, or can communicate with other objects through the communication system can be terminals in the embodiments of the present application, for example, terminals and cars in intelligent transportation, home devices in smart home, power metering instruments, voltage monitoring instruments, environmental monitoring instruments in smart grid, video monitoring instruments in intelligent security network, cash registers, and the like. In the embodiments of the present application, the terminal can communicate with the base station, for example Figure 1 The base station in the communication system can be used to support terminal access, for example, can be a base transceiver station (BTS) and a base station controller (BSC) in a 2G access technology communication system, a node B (Node B) and a radio network controller (RNC) in a 3G access technology communication system, an evolved node B (eNB) in a 4G access technology communication system, a next generation node B (gNB) in a 5G access technology communication system, a transmission reception point (TRP), a relay node, an access point (AP), and the like. For convenience of description, in all embodiments of the present application, the device providing wireless communication function for the terminal is collectively referred to as a network device or a base station.

[0056] Figure 2a is a structural schematic diagram of a base station. In Figure 2a ,

[0057] The base station includes at least one processor 101, at least one memory 102, at least one transceiver 103, at least one network interface 104, and one or more antennas 105. The processor 101, the memory 102, the transceiver 103, and the network interface 104 are connected, for example, through a bus. The antenna 105 is connected to the transceiver 103. The network interface 104 is configured to enable the base station to connect to other communication devices through a communication link. In the embodiments of the present application, the connection can include various interfaces, transmission lines, or buses, etc., and the embodiments are not limited in this regard.

[0058] The processor in the embodiments of the present application, for example, the processor 101, can include at least one of the following types: a general central processing unit (CPU), a digital signal processor (DSP), a microprocessor, an application-specific integrated circuit (ASIC), a microcontroller unit (MCU), a field programmable gate array (FPGA), or an integrated circuit for implementing logical operations. For example, the processor 101 can be a single-CPU processor or a multi-CPU processor. The at least one processor 101 can be integrated in one chip or located on multiple different chips.

[0059] The memory in the embodiments of the present application, for example, the memory 102, can include at least one of the following types: a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM). In some scenarios, the memory can also be a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0060] The memory 102 can exist independently and be connected to the processor 101. Optionally, the memory 102 can also be integrated with the processor 101, for example, integrated within a single chip. The memory 102 can store program code that executes the technical solutions of the embodiments of this application, and its execution is controlled by the processor 101. The various types of computer program code being executed can also be considered as drivers for the processor 101. For example, the processor 101 executes the computer program code stored in the memory 102 to implement the technical solutions of the embodiments of this application. Optionally, the memory 102 can also be located outside the chip and connected to the processor 101 via an interface.

[0061] Transceiver 103 can be used to support the reception or transmission of radio frequency signals between access network equipment and terminals. Transceiver 103 can be connected to antenna 105. Transceiver 103 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 105 can receive radio frequency signals. The receiver Rx of transceiver 103 is used to receive the radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 101 so that the processor 101 can perform further processing on the digital baseband signals or digital intermediate frequency signals, such as demodulation and decoding. In addition, the transmitter Tx in transceiver 103 is also used to receive the modulated digital baseband signals or digital intermediate frequency signals from the processor 101, convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through one or more antennas 105. Specifically, the receiver Rx can selectively perform one or more stages of downmixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency (IF) signal. The order of the downmixing and IF conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of upmixing and digital-to-analog conversion on the modulated digital baseband signal or digital IF signal to obtain a radio frequency signal. The order of the upmixing and IF conversion processes is also adjustable. The digital baseband signal and the digital IF signal can be collectively referred to as digital signals.

[0062] Figure 2b This is a structural diagram of a terminal. Figure 2b middle:

[0063] The terminal includes at least one processor 201, at least one transceiver 202, and at least one memory 203. The processor 201, memory 203, and transceiver 202 are connected together. Optionally, the terminal may also include an output device 204, an input device 205, and one or more antennas 206. The antennas 206 are connected to the transceiver 202, and the output device 204 and input device 205 are connected to the processor 201.

[0064] The transceiver 202, the memory 203 and the antenna 206 can realize similar functions as described in the related art. Figure 2a The transceiver 202, the memory 203 and the antenna 206 can realize similar functions as described in the related art.

[0065] The processor 201 can be a baseband processor or a CPU, and the baseband processor and the CPU can be integrated together or separated.

[0066] The processor 201 can be used to realize various functions for the terminal, such as processing communication protocols and communication data, or controlling the entire terminal device, executing software programs, processing data of the software programs, or assisting in completing computing processing tasks such as graphic image processing or audio processing, or the processor 201 is used to realize one or more of the above functions

[0067] The output device 204 communicates with the processor 201 and can display information in various ways. For example, the output device 204 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc. The input device 205 communicates with the processor 201 and can accept user input in various ways. For example, the input device 205 can be a mouse, a keyboard, a touch screen device, or a sensor device, etc.

[0068] The memory 203 can exist independently and be connected to the processor 201. Alternatively, the memory 203 can also be integrated with the processor 201, for example, integrated in a chip. The memory 203 can store program codes for executing the technical solutions of the embodiments of the present application, and the processor 201 controls the execution. Various computer program codes executed can also be regarded as a driver of the processor 201. For example, the processor 201 is used to execute the computer program codes stored in the memory 203, so as to realize the technical solutions in the embodiments of the present application. Alternatively, the memory 203 can also be outside the chip and connected to the processor 201 through an interface.

[0069] In order for those skilled in the art to better understand the technical solutions of the present application, the background art possibly involved will be briefly described below in conjunction with the communication system shown in Figure 1

[0070] 1) Downlink channel

[0071] ​To support uplink / downlink data transmission, downlink control signaling needs to be carried in the carrier to enable the uplink / downlink data to be successfully received. Since the information carried by the signaling comes from the physical layer (may also be referred to as the L1 layer) or the medium access control (MAC) layer (may also be referred to as the L2 layer), the signaling can also be referred to as downlink physical layer control signaling or downlink MAC layer control signaling. The downlink physical layer control signaling or the downlink MAC layer control signaling includes a physical control format indicator channel (PCFICH), a physical HARQ indicator channel (PHICH), and a PDCCH.

[0072] As shown in FIG. 1, a structure of each subframe in the carrier is shown. Referring to FIG. 1, a single subframe includes a control region and a data region. As shown in FIG. 1, the control region occupies 3 OFDM symbols, and the data region occupies 11 OFDM symbols. It should be noted that the number of OFDM symbols occupied by the control region and the data region is only an example. It should be noted that the number of OFDM symbols can also be understood as a time length. Figure 3 Figure 3 Figure 3

[0073] The following describes the control signaling in the control region:

[0074] The PCFICH is used to inform a UE of a size of a control region of a corresponding downlink subframe, i.e., a number of OFDM symbols occupied by the control region. It can also be understood that the PCFICH is used to indicate a number of OFDM symbols used to transmit the PDCCH in a downlink subframe. It should be noted that each cell has and only has one PCFICH in each downlink subframe.

[0075] The information carried by the PCFICH is a CFI (Control Format Indicator), wherein the CFI takes a value of 1, 2, or 3, and CFI=4 is a reserved value. In an example, if the number of RBs in the downlink system bandwidth is less than or equal to 100, the CFI takes a value of 1, 2, or 3; if the number of RBs in the downlink system bandwidth is greater than 100, the CFI takes a value of 1 or 2. ​​​CF1 is 1, indicating that the control region occupies 1 OFDM symbol, CF1 is 2, indicating that the control region occupies 2 OFDM symbols, and CF1 is 3, indicating that the control region occupies 3 OFDM symbols. That is, the number of OFDM symbols occupied by the control region is equal to the value of CFI. In another example, if the number of RBs of the downlink system bandwidth is CF1 is 1, indicating that the control region occupies 2 OFDM symbols, CF1 is 2, indicating that the control region occupies 3 OFDM symbols, and CF1 is 3, indicating that the control region occupies 4 OFDM symbols. That is, the number of OFDM symbols occupied by the control region is equal to the value of CFI plus 1 (denoted as CFI+1).

[0076] The PDCCH is mainly used to transmit downlink control information (DCI), and the DCI includes at least one of the following: downlink scheduling information, uplink scheduling information, aperiodic CQI reporting request, Multicast Control Channel (MCCH) information, uplink power control command, HARQ related information, Radio Network Temporary Identity (RNTI), etc.

[0077] The downlink scheduling information is used to instruct the UE to receive a physical downlink shared channel (PDSCH). The uplink scheduling information is used to instruct the UE to transmit a physical uplink shared channel (PUSCH).

[0078] That is, the UE can determine the number of OFDM symbols occupied by the control region and the data region based on the CFI information, determine which data region in the frequency domain carries the data information of the UE based on the DCI information, and further parse the data information based on the DCI information to obtain the data information of the UE.

[0079] 2) Carrier aggregation

[0080] In order to meet the higher bandwidth requirement, for example, it is required to reach the downlink peak speed of 1 Gbps and the uplink peak speed of 500 Mbps, a transmission bandwidth of 100 MHz is provided. However, due to the scarcity of large bandwidth continuous spectrum, in order to realize larger transmission bandwidth, LTE-A proposes a carrier aggregation solution.

[0081] Specifically, Carrier Aggregation (CA) is to aggregate two or more component carriers (CCs) together to support a larger transmission bandwidth.

[0082] It should be noted that each component carrier corresponds to an independent cell, and one component carrier can be equivalent to one cell in general. The maximum bandwidth of each component carrier is 20 MHz.

[0083] 3) Cross-carrier scheduling

[0084] In LTE-A, the main role of cross-carrier scheduling is to provide inter-cell interference coordination (ICIC) support for PDCCH in a heterogeneous network. A typical heterogeneous network scenario is as follows:

[0085] Referring to Figure 4 , cell 1 and cell 2 share two downlink CCs: CC1 and CC2. Both CCs of cell 2 are operated at low transmission power, and CC1 of cell 1 is operated at high transmission power, and CC2 is operated at low transmission power. The transmission of cell 1 on CC1 has a great interference to CC1 of cell 2. Therefore, on cell 2, the PDCCH on CC2 is used to cross-carrier schedule the transmission of data on CC1 to reduce interference.

[0086] If cross-carrier scheduling is not supported, the information carried by the PDCCH transmitted on each cell corresponds to the downlink resource allocation or uplink resource allocation of the cell. If cross-carrier scheduling is supported, the PDCCH on one cell is allowed to schedule the radio resources on another cell. That is, the PDCCH is transmitted on one cell, but the corresponding PDSCH or PUSCH is transmitted on another cell.

[0087] Specifically, the base station configures the cross-carrier scheduling of a certain UE through the Radio Resource Control (RRC) Connection Reconfiguration message. Through the IE: crossCarrierSchedulingConfig-r10, it can configure the behavior of each component carrier of the UE in cross-carrier scheduling, that is, each component carrier can be independently configured whether to enable cross-carrier scheduling and on which other component carrier to schedule.

[0088] For example, if the UE is configured with cross-carrier scheduling, the possible configuration of the serving cell of the UE includes:

[0089] Configuration one: neither a certain serving cell cross-carrier schedules resources on other serving cells, nor is it cross-carrier scheduled by other serving cells. Namely, the serving cell only sends PDCCH of the cell.

[0090] Configuration two: a certain serving cell cross-carrier schedules resources on other serving cells, at this time, the resources of the serving cell can only be scheduled on the serving cell, and cannot be cross-carrier scheduled by other serving cells. Namely, the serving cell sends PDCCH of the cell and PDCCH of other cells.

[0091] Configuration three: a certain serving cell is cross-carrier scheduled by other serving cells, at this time, the serving cell cannot cross-carrier schedule resources on other serving cells. Namely, the serving cell neither sends PDCCH of the cell, nor sends PDCCH of other cells.

[0092] It should be noted that in cross-carrier scheduling, the primary carrier in carrier aggregation needs to carry PDCCH, and the PDCCH it carries can be PDDCH of the cell, or PDCCH of the cell and other cells.

[0093] As can be seen from the above introduction, if the UE is configured with cross-carrier scheduling, the PDCCH sent by a certain cell can correspond to PDSCH / PUSCH resources of the cell, or can correspond to PDSCH / PUSCH resources of other cells. Therefore, in Rel-10, PDCCH (or DCI) adds a carrier indication field (CIF), which is used to specify which PDSCH / PUSCH resources the PDCCH corresponds to, and the field only exists in cross-carrier scheduling.

[0094] In summary, the cross-carrier technology in the prior art calls other carriers by carrying DCI on a certain carrier. However, in the case that there is no DCI on the called carrier, the OFDM symbol occupied by the control area will still be occupied, causing waste of air interface resources.

[0095] The present application proposes a channel configuration method, which can effectively overcome the defects in the prior art.

[0096] In combination with the application scenario diagram as shown in Figure 1 The specific implementation scheme of the present application is introduced as follows:

[0097] AsFigure 5 The diagram shown is a flowchart of the channel configuration method in an embodiment of this application. Figure 5 middle:

[0098] Step 101: The base station sends indication information to the UE. The indication information is used to indicate that the number of OFDM symbols in the data area of ​​the subframe of the first carrier is equal to the number of OFDM symbols in the subframe.

[0099] Specifically, in this application, the base station may send indication information to the UE (e.g., UE1, UE2 and UE3) to indicate that the subframe on the first carrier does not include a control region. This can also be understood as the number of OFDM symbols in the data region of the subframe on the first carrier being equal to the number of OFDM symbols in the subframe on the first carrier, or as the time length occupied by the data region of the subframe on the first carrier being equal to the time length occupied by the subframe on the first carrier.

[0100] In this application, the base station can send the indication information in different ways to indicate that the corresponding carrier will be transmitted in a no-control area mode.

[0101] In one possible implementation, the indication information can be physical layer signaling; for details, please refer to Scenario 1.

[0102] In another possible implementation, the indication information can be MAC layer signaling; for details, please refer to Scenario 2.

[0103] In another possible implementation, the indication information can be RRC layer signaling; for details, please refer to Scenario 3.

[0104] Step 102: The base station sends control information and data information to the UE. The control information is used to instruct the terminal to receive and parse at least one control parameter of the data information. The control information is located in the control area of ​​the subframe of the second carrier, and the data information is located in the data area of ​​the subframe of the first carrier and the second carrier.

[0105] Specifically, in this application, the base station can send information to the UE based on a cross-carrier scheduling method. The information includes control information and data information.

[0106] The scheduling methods for the first and second carriers are explained below:

[0107] Specifically, in the present application, the subframe on the second carrier comprises a control region and a data region. The control region comprises, but is not limited to, DCI, CFI and other information. Alternatively, since the subframe on the second carrier comprises a control region, the CFI information of the subframe on the second carrier is processed according to the prior art, i.e., the value is 1, 2 or 3, and the specific manner can refer to the prior art, which is not limited in the present application. Alternatively, the DCI information in the control region comprises DCI information for scheduling data information on the second carrier, and also comprises DCI information for scheduling data information on the first carrier. That is, the UE in the first cell corresponding to the first carrier can correctly receive and analyze the corresponding data information by reading the DCI information in the subframe on the second carrier, and the UE in the second cell corresponding to the second carrier can correctly receive and analyze the corresponding data information by reading the DCI information in the subframe on the second carrier.

[0108] In a possible implementation, the data information of the UE can be carried in the data region of the subframe on the first carrier and / or in the data region of the subframe on the second carrier. That is, in the cross-carrier scheduling mode based on carrier aggregation, the data of the UE is no longer limited to being transmitted on one carrier, and the data information of the UE can be transmitted on any carrier in the carrier aggregation. For example, in the non-carrier aggregation transmission mode, the data information of UE1 in cell 1 can only be transmitted through carrier 1, and the data information of UE2 in cell 2 can only be transmitted through carrier 2. In the cross-carrier scheduling mode based on carrier aggregation, the data information of UE1 can be transmitted on carrier 1, or on carrier 2, or on both carrier 1 and carrier 2 (i.e., the data information of UE1 is divided into two or more data parts, and is transmitted through carrier 1 and carrier 2 respectively), and the same applies to UE2.

[0109] In step 103, the UE receives and analyzes the data information based on the indication information and the control information.

[0110] Specifically, in the present application, the UE obtains the control information from the control region of the subframe on the second carrier, and determines the position of the data information corresponding to the UE on the first carrier and / or the second carrier by reading the control information.

[0111] In a possible implementation, if the data information of the UE is on the first carrier, the UE can determine that the subframe on the first carrier does not comprise a control region based on the indication information, that is, the length (i.e., the number of OFDM symbols) of the data region of the subframe of the first carrier is equal to the length of the subframe, and the UE can further obtain the corresponding data information from the data region based on the position of the data information of the UE indicated by the control information, and analyze the data information.

[0112] It should be noted that the specific DCI indicates the position of the frequency domain of the data information of the UE on the first carrier, and the data information carried in the data region in the frequency domain range indicated by the DCI corresponds to the UE.

[0113] In the prior art, that is, in the case that the subframe on the first carrier has a control region, the UE reads the data information on the corresponding frequency domain position from the starting position of the data region, for example, the fourth OFDM symbol in the subframe. In the present application, since there is no control region in the subframe on the first carrier, the UE can read the data information on the corresponding frequency domain position from the first OFDM symbol of the subframe.

[0114] In another possible implementation, if the data information of the UE is on the second carrier, the UE receives and parses the corresponding data information in the cross-carrier scheduling manner in the prior art.

[0115] In summary, the channel configuration manner of the present application releases the occupation of the OFDM symbol that does not include the PDCCH, so that the originally idle OFDM symbol is used for transmission of data information, thereby improving the utilization rate of air interface resources. For example, the bandwidth utilization rate can be improved by 3% to 4.6% by using the channel configuration manner of the present application.

[0116] In a possible implementation, the base station can be provided with a preset condition, and the base station can determine whether to perform the channel configuration manner of the present application based on the preset condition. In one example, the preset condition can be that the base station detects that the occupation rate of the control region of the secondary carrier is less than a threshold, for example, 50%, in the cross-carrier scheduling mode, and then performs the channel configuration manner of the present application. The secondary carrier with an occupation rate less than the threshold is the first carrier in the present application, and the second carrier can be the primary carrier or another secondary carrier, which is not limited in the present application.

[0117] In another example, the preset condition can be that the base station detects that the occupation rate of the control region of the carrier (which can be the primary carrier or the secondary carrier) used to carry the DCI exceeds a threshold, for example, 80%, in the cross-carrier scheduling mode, and then does not perform the channel configuration manner of the present application. That is, if the occupation rate of the control region of the first carrier exceeds the threshold, the DCI information of the UE of the second cell corresponding to the second carrier is still transmitted through the second carrier.

[0118] In a possible implementation, the first carrier described in the present application can be any secondary carrier except the primary carrier in the cross-carrier scheduling mode, that is, the primary carrier in the cross-carrier scheduling mode must have a control region.

[0119] The technical solutions of the above method embodiments will be described in detail below by using several specific embodiments.

[0120] Combining Figure 1 In the following embodiments, UE1 belongs to cell 1, UE2 belongs to cell 2, and UE3 belongs to cell 3, and cell 1 corresponds to carrier 1, cell 2 corresponds to carrier 2, and cell 3 corresponds to carrier 3, carrier 1, carrier 2 and carrier 3 are carrier aggregated, and carrier 1 is a primary carrier, and carrier 2 and carrier 3 are secondary carriers, in this embodiment, carrier 1 is the second carrier described in the present application, and carrier 2 and carrier 3 are the first carrier described in the present application, which are taken as examples for description. Wherein, cell 1~cell 3 can belong to the same base station, or belong to different base stations, which is not limited in the present application.

[0121] Scenario one

[0122] Combining Figure 1 As Figure 6 shown is a flowchart of the channel configuration method in the embodiments of the present application, in Figure 6 which:

[0123] Step 201, the base station sends an RRC message to the UE.

[0124] Specifically, the base station sends an RRC message to the UE (UE1, UE2, UE3), which is used to indicate the cross-carrier scheduling configuration (the concept can refer to the above). Exemplarily, the cross-carrier scheduling configuration includes the carrier aggregation manner, the cross-carrier scheduling manner, etc.

[0125] Exemplarily, in this embodiment, the carrier aggregation manner is that carrier 1, carrier 2 and carrier 3 are carrier aggregated, and carrier 1 is a primary carrier, and carrier 2 and carrier 3 are secondary carriers. The cross-carrier scheduling manner is that the DCI carried on carrier 1 is used to schedule the DCI of the data information of carrier 1, carrier 2 and carrier 3, that is, the DCI information of the UEs in cell 1, cell 2 and cell 3 is located in the control area of the subframe on carrier 1.

[0126] Step 202, the base station sends information to the UE, wherein the indication information is CFI=4.

[0127] Specifically, the base station sends information to the UE based on the cross-carrier scheduling manner in this embodiment, and the information includes but is not limited to: indication information, control information and data information. Exemplarily, in this embodiment, the indication information is CFI information, that is, physical layer signaling, the control information is DCI information, and the data information is the data of the UE. Exemplarily, the information can also include other information, which is not limited in the present application.

[0128] As Figure 7 shown is a schematic diagram of the scheduling manner of the current subframe of each carrier, referring to Figure 7 , exemplarily, the bandwidth of each carrier is 20M, and the following will be combined Figure 7The scheduling mode of each carrier is described in detail.

[0129] 1) Carrier 1

[0130] Specifically, the subframe on the carrier 1 includes a control region and a data region, wherein the control region includes but is not limited to: DCI information of UE1, DCI information of UE2 and DCI information of UE3, wherein the DCI information of UE1 is used to schedule the data information corresponding to UE1 on the subframe of carrier 1, the DCI information of UE2 is used to schedule the data information corresponding to UE2 on the subframe of carrier 2, and the DCI information of UE3 is used to schedule the data information corresponding to UE3 on the subframe of carrier 3.

[0131] For example, the DCI information of UE1 carries CIF1, which is used to indicate that the DCI information corresponds to the UE in cell 1, the DCI information of UE2 carries CIF2, which is used to indicate that the DCI information corresponds to the UE in cell 2, and the DCI information of UE3 carries CIF3, which is used to indicate that the DCI information corresponds to the UE in cell 3.

[0132] For example, the control region further includes CFI information, and in this embodiment, the CFI takes a value of 3, and the control region occupies 3 OFDM symbols.

[0133] For example, the data region includes the data information of UE1.

[0134] 2) Carrier 2

[0135] Specifically, referring to Figure 7 , the subframe on the carrier 2 only includes a data region, wherein the data region includes but is not limited to: CFI information, and for example, the CFI information takes a value of 4, which is used to indicate that the subframe does not include a control region.

[0136] The data region further includes the data information of UE2.

[0137] 3) Carrier 3

[0138] Specifically, referring to Figure 7 , the subframe on the carrier 3 only includes a data region, wherein the data region includes but is not limited to: CFI information, and for example, the CFI information takes a value of 4, which is used to indicate that the subframe does not include a control region.

[0139] The data region further includes the data information of UE3.

[0140] It should be noted that the carrying manners of the DCI information and the data information in the embodiments of the present application are only illustrative examples. As described above, the DCI of each UE can be located on the primary carrier or on the primary carrier and any secondary carrier. In addition, the data information of each UE can be located on any one or more than one carrier. For example, the data information of UE3 can also be located in the data region of carrier 1, or the data information of UE3 can be located in the data region of carrier 2, or the data information of UE3 can also be located in the data regions of carrier 1, carrier 2 and carrier 3, which is not limited in the present application.

[0141] In step 203, the UE acquires the DCI information.

[0142] Specifically, the UEs (UE1, UE2 and UE3) can determine that the DCI information of each UE is located on carrier 1 based on the RRC message in step 201.

[0143] Each UE first acquires the CFI information (CFI=3) of the subframe on carrier 1, and determines that the control region of the subframe on carrier 1 occupies 3 OFDM symbols based on the CFI information.

[0144] Each UE reads the CIF information in the plurality of DCI information in the control region in the subframe on carrier 1 (for concept, refer to the above), to determine which cell the DCI specifically corresponds to. For example, as described above, UE1 can determine that the DCI information to which CIF1 belongs corresponds to cell 1 in which UE1 is located by reading CIF1. UE2 can determine that the DCI information to which CIF2 belongs corresponds to cell 2 in which UE2 is located by reading CIF2. UE3 can determine that the DCI information to which CIF3 belongs corresponds to cell 3 in which UE3 is located by reading CIF3.

[0145] Subsequently, UE1 can perform blind detection on one or more DCI information containing CIF1 to acquire the DCI information of UE1. UE2 and UE3 are the same, which is not described here.

[0146] In step 204, the UE acquires the data information.

[0147] Specifically, the UEs (UE1, UE2 and UE3) can determine the location of the corresponding data information in the frequency domain based on the DCI information of each UE. For example, the DCI information of UE1 indicates that the data information 1 of UE1 is located at the frequency domain location 1 of the subframe on carrier 1; the DCI information of UE2 indicates that the data information 2 of UE2 is located at the frequency domain location 2 of the subframe on carrier 2; the DCI information of UE3 indicates that the data information 3 of UE3 is located at the frequency domain location 3 of the subframe on carrier 3, as shown in Figure 7

[0148] ​For example, as described above, UE1 determines, based on the CFI information (CFI=3) of carrier 1, that the subframe of carrier 1 includes a control region, and the control region occupies 3 OFDM symbols. UE1 can further acquire data information 1 in the data region based on the position of the data information in the frequency domain indicated by the DCI information, i.e., the frequency domain position 1. The data region starts from the 4th OFDM symbol, that is, UE1 reads its own data information from the 4th OFDM symbol at the frequency domain position 1, and parses the data information 1 based on the DCI information.

[0149] For example, UE2 determines, based on the DCI information of UE2, that the data information 2 of UE2 is on carrier 2. UE2 can determine, by reading the CFI information (CFI=4) on carrier 2, that the subframe on carrier 2 does not include a control region. UE2 can further acquire the data information 2 in the data region based on the position of the data information in the frequency domain indicated by the DCI information, i.e., the frequency domain position 2. The data region starts from the 1st OFDM symbol, that is, UE2 reads its own data information from the 1st OFDM symbol at the frequency domain position 2, and parses the data information 2 based on the DCI information of UE2.

[0150] UE3 is the same as UE2, and details are not repeated here.

[0151] It should be noted that the indication mode by setting the CFI information to a special value is effective only on the subframe to which the CFI information belongs, that is, UE2 determines, based on the CFI information, that the subframe to which the CFI information belongs does not include a control region. For the next subframe, UE2 determines, based on the CFI information in the next subframe, whether the next subframe includes a control region. It can be understood that the indication mode of the physical layer signaling is an immediate indication mode, and the content of the indication can take effect immediately in the current subframe.

[0152] Scenario two

[0153] In combination Figure 1 As Figure 8 Fig. 1 shows a flowchart of a channel configuration method in an embodiment of the present application. In the embodiment, the method comprises the following steps. Figure 8

[0154] In step 301, a base station sends an RRC message to a UE.

[0155] Details are referred to step 201, and details are not repeated here.

[0156] In step 302, the base station sends information to the UE, wherein the indication information is MCE information.

[0157] ​Specifically, the base station sends information to the UE based on the cross-carrier scheduling manner in the embodiment, and the information includes but is not limited to indication information, control information and data information.

[0158] In this step, the cross-carrier scheduling manner of the base station is the same as the prior art, that is, the carrier 1, the carrier 2 and the carrier 3 all include control regions and data regions to transmit control information and data information.

[0159] For example, in the embodiment, the indication information is MCE information, that is, MAC layer signaling, and the MCE information is located in the data information of each UE (including UE1, UE2 and UE3) to indicate that the subframes starting from the Nth subframe after the current subframe on the carrier 2 and the carrier 3 all do not include control regions. For example, if N=4, it can be understood that the notification manner of the MCE information has a delay of 4 subframes, and the configuration manner without control regions will take effect from the 4th subframe after the current subframe.

[0160] It should be noted that the MCE information needs to be carried in the data information of each UE to indicate the configuration of the channel to each UE.

[0161] In a possible implementation manner, if the data information of the same UE, for example, UE1, is divided into multiple data information parts and located in the data regions of different carriers, the MCE information can be carried in any data information part in an example. In another example, the MCE information can be carried in each data information part.

[0162] In a possible implementation manner, the indication manner of the MCE information can use 8 bits to indicate the corresponding carrier respectively. For example, "0" indicates that the corresponding carrier will be configured as a control region-free mode, and "1" indicates that the corresponding carrier is still in a control region mode, for example: {1, 0, 0} indicates that the carrier 1 is in a control region mode, the carrier 2 is in a control region-free mode, and the carrier 3 is in a control region-free mode. That is, through the MCE information, the UE can be informed of the mode (including the control region-free mode and the control region mode) to be implemented by each carrier in the cross-carrier scheduling.

[0163] In step 303, the UE obtains the DCI.

[0164] In step 304, the UE obtains the data information.

[0165] Specifically, the UE (UE1, UE2 and UE3) reads the respective data information based on the DCI information on the carrier 1. It should be noted that in this step, the scheduling manner of the current carrier is the same as the prior art, and therefore, each UE receives and analyzes the respective data information according to the prior art.

[0166] For example, after the UEs (UE1, UE2 and UE3) obtain the corresponding data information, the UEs can determine the operation mode of each carrier based on the MCE information in the data information. Specifically, the operation mode of the carrier 1 is the mode with control region, i.e., including control region and data region, and the operation modes of the carrier 2 and the carrier 3 are the mode without control region, i.e., only including data region.

[0167] In step 305, the base station sends the control information and the data information.

[0168] Specifically, the base station starts from the Nth subframe after sending the MCE information, and schedules according to the configuration mode of each carrier as described above to send the control information and the data information.

[0169] The scheduling mode of each carrier will be described below Figure 7 with reference to Figure 7 :

[0170] 1) Carrier 1

[0171] Specifically, the subframe on the carrier 1 includes control region and data region, wherein the control region includes but is not limited to: DCI information of UE1 in cell 1, DCI information of UE2 in cell 2, and DCI information of UE3 in cell 3. The DCI information of UE1 is used to schedule the data information corresponding to UE1 on the subframe of the carrier 1, the DCI information of UE2 is used to schedule the data information corresponding to UE2 on the subframe of the carrier 2, and the DCI information of UE3 is used to schedule the data information corresponding to UE3 on the subframe of the carrier 3.

[0172] For example, the DCI information of UE1 carries CIF1, which is used to indicate that the DCI information corresponds to the UE in cell 1, the DCI information of UE2 carries CIF2, which is used to indicate that the DCI information corresponds to the UE in cell 2, and the DCI information of UE3 carries CIF3, which is used to indicate that the DCI information corresponds to the UE in cell 3.

[0173] For example, the control region further includes CFI information. For example, in this embodiment, the CFI takes the value of 3, and the control region occupies 3 OFDM symbols.

[0174] For example, the data region includes the data information of UE1.

[0175] 2) Carrier 2

[0176] Specifically, referring to Figure 7 , the subframe on the carrier 2 only includes data region, and the data region includes the data information of UE2.

[0177] 3) Carrier 3

[0178] Specifically, referring toFigure 7 The subframes on carrier 3 only include the data area, which contains the data information of UE3.

[0179] Step 306: UE obtains DCI information.

[0180] For specific details, please refer to step 203, which will not be repeated here.

[0181] Step 307: UE obtains data information.

[0182] Each UE (UE1, UE2, and UE3) can determine the position of its corresponding data information in the frequency domain based on its own DCI information. For example: UE1's DCI information indicates that UE1's data information 1 is located at frequency domain position 1 of a subframe on carrier 1; UE2's DCI information indicates that UE2's data information 2 is located at frequency domain position 2 of a subframe on carrier 2; UE3's DCI information indicates that UE3's data information 3 is located at frequency domain position 3 of a subframe on carrier 3, and so on. Figure 7 As shown.

[0183] For example, as described above, UE1 determines, based on the CFI information (CFI=3) of carrier 1, that the subframe of carrier 1 includes a control region, and that the control region occupies 3 OFDM symbols. UE1 can further obtain data information 1 in the data region based on the position of the data information in the frequency domain indicated by the DCI information, i.e., at frequency domain position 1. The data region starts from the 4th OFDM symbol bit; that is, UE1 starts from the 4th OFDM symbol bit, reads its own data information at frequency domain position 1, and parses data information 1 based on the DCI information.

[0184] For example, UE2 determines that its data information 2 is on carrier 2 based on its DCI information, and in step 304, UE2 determines that the subframe on carrier 2 does not include a control region. UE2 can further obtain the data information 2 in the data region based on the position of the data information in the frequency domain indicated by the DCI information, i.e., frequency domain position 2. The data region starts from the first OFDM symbol bit; that is, UE2 reads its own data information from the first OFDM symbol bit at frequency domain position 2 and parses the data information 2 based on its DCI information.

[0185] UE3 is the same as UE2, so it will not be repeated here.

[0186] Scene 3

[0187] Combination Figure 1 ,like Figure 9 The diagram shown is a flowchart of the channel configuration method in an embodiment of this application. Figure 9 middle:

[0188] At step 401, the base station sends an RRC message to the UE, and the RRC message carries the indication information.

[0189] Specifically, in the process of scheduling each carrier by the base station, that is, at any time when the base station sends data to each UE, the base station can send an RRC message to each UE, and the RRC message carries the indication information, which indicates that the carrier 2 and the carrier 3 will adopt the control region free mode.

[0190] That is, similar to the MCE information, the RRC message needs to be sent to each UE to inform each UE of the configuration of each carrier.

[0191] For example, the indication manner of the RRC message can be similar to the MCE information, for example, through a plurality of bits to indicate the configuration of the corresponding carrier. In other embodiments, other indication manners can also be used, for example, the RRC message carries the carrier information of each carrier and the corresponding carrier configuration manner (including the control region free mode and the control region mode), to indicate the configuration of each carrier to the UE, which is not limited in the present application.

[0192] At step 402, the UE sends an RRC response message to the base station.

[0193] Specifically, based on the characteristics of the RRC layer signaling, the corresponding instruction will take effect only after the base station receives the RRC response message of the UE.

[0194] For example, after the UE receives the RRC message, it determines, based on the indication information carried by the RRC message, that the carrier 2 and the carrier 3 are in the control region free mode, that is, only include the data region, and sends an RRC response message to the base station.

[0195] Optionally, after receiving the RRC response message, the base station can adopt the control region free mode in the next subframe, that is, immediately. Alternatively, the base station can take effect in the Mth subframe after receiving the RRC response message, and the specific timing of taking effect depends on the negotiation result of the base station and the UE, which is not limited in the present application.

[0196] At step 403, the base station sends control information and data information to the UE.

[0197] The specific transmission manner is similar to that in scenario two, which is not described here.

[0198] At step 404, the UE acquires the DCI information.

[0199] The specific details can be referred to step 203, which is not described here.

[0200] At step 405, the UE acquires the data information.

[0201] The specific details can refer to scenario two, which will not be described here.

[0202] The above describes the scheme provided by the embodiments of the present application mainly from the perspective of the interaction between the network elements. It can be understood that the network device and the terminal device contain the hardware structure and / or software module for executing the respective functions in order to implement the above functions. Those skilled in the art should easily realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed in the present text can be implemented in the form of hardware or the combination of hardware and computer software. Whether a certain function is implemented in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0203] The embodiments of the present application can divide the network device and the terminal device into functional modules according to the above method examples. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of the modules in the embodiments of the present application is illustrative, and is only a logical functional division. There can be another division manner when actually implemented.

[0204] In the case of dividing each functional module according to each function, Figure 10 A possible structure schematic diagram of the network device 300 involved in the above embodiments is shown as follows. Figure 10 As shown in the figure, the network device 300 can include a transceiver module 301, a sending instruction information module, the instruction information being used to indicate that the OFDM symbol quantity of the data region of the subframe of the first carrier is equal to the OFDM symbol quantity of the subframe. The transceiver module 301 is also used to send control information and data information, the control information being used to indicate at least one control parameter of the terminal device receiving and analyzing the data information, the control information being located in the control region of the subframe of the second carrier, and the data information being located in the data region of the subframe of the first carrier and the second carrier.

[0205] In a possible implementation manner, the instruction information is located in the subframe of the first carrier.

[0206] In a possible implementation manner, the instruction information is control format indication (CFI) information, and the instruction information is a preset value, which is used to indicate that the OFDM symbol quantity of the data region of the subframe where the instruction information is located is equal to the OFDM symbol quantity of the subframe.

[0207] In a possible implementation, the indication information is control element (CE) information, and the indication information is used to indicate that the number of OFDM symbols of a data region of a subframe after an Nth subframe after a subframe where the indication information is located is equal to the number of OFDM symbols of the subframe.

[0208] In a possible implementation, the indication information is located in radio resource control (RRC) signaling.

[0209] Figure 11 A possible structural diagram of the terminal device 400 involved in the above embodiments is shown in FIG. 4. Figure 11 As shown in FIG. 4, the terminal device 400 can include a transceiver module 401 and a processing module 402. The transceiver module 401 is configured to receive indication information, the indication information being used to indicate that the number of OFDM symbols of a data region of a subframe of a first carrier is equal to the number of OFDM symbols of the subframe. The transceiver module 401 is further configured to receive control information and data information, the control information being used to indicate at least one control parameter of the terminal device receiving and parsing the data information, the control information being located in a control region of a subframe of a second carrier, and the data information being located in a data region of the subframe of the first carrier and the subframe of the second carrier. The processing module 402 is configured to parse the data information to obtain the data information in response to the received indication information and the control information.

[0210] In a possible implementation, the indication information is located in a subframe of the first carrier.

[0211] In a possible implementation, the indication information is control format indicator (CFI) information, and the indication information is a preset value, and the indication information is used to indicate that the number of OFDM symbols of a data region of a subframe where the indication information is located is equal to the number of OFDM symbols of the subframe.

[0212] In a possible implementation, the indication information is control element (CE) information, and the indication information is used to indicate that the number of OFDM symbols of a data region of a subframe after an Nth subframe after a subframe where the indication information is located is equal to the number of OFDM symbols of the subframe.

[0213] In a possible implementation, the indication information is located in radio resource control (RRC) signaling.

[0214] An apparatus provided by an embodiment of the present application is introduced below. As shown in FIG. 5, Figure 12

[0215] The apparatus includes a processing module 501 and a communication module 502. Optionally, the apparatus further includes a storage module 503. The processing module 501, the communication module 502 and the storage module 503 are connected through a communication bus.

[0216] The communication module 502 can be an apparatus with transceiving functions, configured to communicate with other network devices or communication networks.​

[0217] The storage module 503 can include one or more memories, which can be one or more devices, circuits, etc. for storing programs or data.

[0218] The storage module 503 can exist independently and be connected to the processing module 501 through a communication bus. The storage module can also be integrated with the processing module 501.

[0219] The apparatus 500 can be used in a network device, a circuit, a hardware component, or a chip.

[0220] The apparatus 500 can be a terminal in the embodiments of the present application, for example, UE1, UE2, or UE3. A schematic diagram of the terminal can be as shown in FIG. 2. Optionally, the communication module 502 of the apparatus 500 can include an antenna and a transceiver of the terminal, for example, the antenna 206 and the transceiver 202 in FIG. 2. Figure 2b Figure 2b Optionally, the communication module 502 can also include an output device and an input device of the terminal, for example, the output device 204 and the input device 205 in FIG. 2. Figure 2b

[0221] The apparatus 500 can be a chip in a terminal in the embodiments of the present application. The communication module 502 can be an input or output interface, a pin, or a circuit, etc. Optionally, the storage module can store computer execution instructions of the method on the terminal side, so that the processing module 501 executes the method on the terminal side in the above embodiments. The storage module 503 can be a register, a cache, or a RAM, etc. The storage module 503 can be integrated with the processing module 501; the storage module 503 can be a ROM or other types of static storage devices that can store static information and instructions, and the storage module 503 can be independent of the processing module 501. Optionally, with the development of wireless communication technology, the transceiver can be integrated on the apparatus 500, for example, the communication module 502 integrates the transceiver 202.

[0222] When the apparatus 500 is a terminal or a chip in a terminal in the embodiments of the present application, the apparatus 500 can implement the method executed by the UE in the above embodiments. For details, reference can be made to the related contents in Figure 6 , Figure 8 , and Figure 9 , which will not be described herein again.

[0223] The apparatus 500 can be a base station in the embodiments of the present application. A schematic diagram of the base station can be as shown in FIG. 3. Optionally, the communication module 502 of the apparatus 500 can include an antenna and a transceiver of the base station, for example, the antenna 105 and the transceiver 103 in FIG. 3. The communication module 502 can also include a network interface of the base station, for example, the network interface 107 in FIG. 3. Figure 2a Figure 2a Figure 2a ​​​​The network interface 104 in the apparatus 100.

[0224] The apparatus 500 can be a chip in the base station in the embodiments of the present application. The communication module 502 can be an input or output interface, a pin or a circuit, etc. Optionally, the storage module can store computer execution instructions of the method on the base station side, so that the processing module 501 executes the method on the base station side in the above embodiments. The storage module 503 can be a register, a cache or a RAM, etc. The storage module 503 can be integrated with the processing module 501; the storage module 503 can be a ROM or other types of static storage devices that can store static information and instructions, and the storage module 503 can be independent of the processing module 501. Optionally, with the development of wireless communication technology, the transceiver can be integrated on the apparatus 500, for example, the communication module 502 integrates the transceiver 103, the network interface 104.

[0225] When the apparatus 500 is the base station or the chip in the base station in the embodiments of the present application, the method executed by the base station in the above embodiments can be implemented. For details, refer to the related content in the above Figure 6 , Figure 8 and Figure 9 , which will not be described here.

[0226] The embodiments of the present application also provide a computer readable storage medium. The method described in the above embodiments can be implemented by software, hardware, firmware or any combination thereof, in whole or in part. If implemented in software, the functions can be stored as one or more instructions or codes on a computer readable medium or transmitted on a computer readable medium. The computer readable medium can include a computer storage medium and a communication medium, and can also include any medium that can transfer a computer program from one place to another. The storage medium can be any available medium accessible by a computer.

[0227] As an optional design, the computer readable medium can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer. Moreover, any connection is properly referred to as a computer readable medium. For example, if software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology (such as infrared, radio, and microwave), the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio, and microwave) is included in the definition of medium. As used herein, a disk and a disc include a compact disc (CD), a laser disc, an optical disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with a laser. Combinations of the above should also be included in the scope of computer readable media.

[0228] The embodiments of the present application also provide a computer program product. The method described in the above embodiments can be realized by software, hardware, firmware or any combination thereof, in whole or in part. If realized by software, it can be realized by a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the above computer program instructions are loaded and executed on a computer, the above method embodiments described in the flow or function are generated in whole or in part. The above computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment or other programmable apparatus.

[0229] The embodiments of the present application also provide a communication system, including the base station and the terminal in the above method embodiments.

[0230] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative, rather than limiting, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A channel configuration method, characterized in that, Applied to network devices, including: After sending the RRC message, an indication message is sent. The indication message is used to indicate that the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols in the data area of ​​the subframe of the first carrier is equal to the number of OFDM symbols in the subframe. The RRC message is used to indicate cross-carrier scheduling configuration. The indication message is located in the data area of ​​the subframe of the first carrier. The system transmits control information and data information. The control information is used to instruct the terminal device to receive and parse at least one control parameter of the data information. The control information is located in the control region of a subframe of the second carrier, and the data information is located in the data region of a subframe of the first carrier and the second carrier.

2. The method according to claim 1, characterized in that, The indication information is Control Format Indicator (CFI) information, and the indication information is a preset value used to indicate that the number of OFDM symbols in the data area of ​​the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

3. The method according to claim 1, characterized in that, The indication information is control unit MCE information, used to indicate that the number of OFDM symbols in the data area of ​​the subframe after the Nth subframe following the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

4. A channel configuration method, characterized in that, Applied to terminal devices, including: After receiving the RRC message, an indication message is received. The indication message is used to indicate that the number of OFDM symbols in the data area of ​​the subframe of the first carrier is equal to the number of OFDM symbols in the subframe. The indication message is located in the data area of ​​the subframe of the first carrier. The RRC message is used to indicate cross-carrier scheduling configuration. The device receives control information and data information. The control information is used to instruct the terminal device to receive and parse at least one control parameter of the data information. The control information is located in the control region of a subframe of the second carrier, and the data information is located in the data region of a subframe of the first carrier and the second carrier. In response to the received instruction information and control information, the data information is parsed to obtain the data information.

5. The method according to claim 4, characterized in that, The indication information is Control Format Indicator (CFI) information, and the indication information is a preset value used to indicate that the number of OFDM symbols in the data area of ​​the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

6. The method according to claim 4, characterized in that, The indication information is control unit MCE information, used to indicate that the number of OFDM symbols in the data area of ​​the subframe after the Nth subframe following the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

7. A network device, characterized in that, include: A memory and a processor, wherein the memory and the processor are coupled; The memory stores program instructions that, when executed by the processor, cause the network device to perform the following: After sending the RRC message, an indication message is sent. The indication message is used to indicate that the number of OFDM symbols in the data area of ​​the subframe of the first carrier is equal to the number of OFDM symbols in the subframe. The RRC message is used to indicate cross-carrier scheduling configuration. The indication message is located in the data area of ​​the subframe of the first carrier. The system transmits control information and data information. The control information is used to instruct the terminal device to receive and parse at least one control parameter of the data information. The control information is located in the control region of a subframe of the second carrier, and the data information is located in the data region of a subframe of the first carrier and the second carrier.

8. The device according to claim 7, characterized in that, The indication information is Control Format Indicator (CFI) information, and the indication information is a preset value used to indicate that the number of OFDM symbols in the data area of ​​the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

9. The device according to claim 7, characterized in that, The indication information is control unit MCE information, used to indicate that the number of OFDM symbols in the data area of ​​the subframe after the Nth subframe following the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

10. A terminal device, characterized in that, include: A memory and a processor, wherein the memory and the processor are coupled; The memory stores program instructions, which, when executed by the processor, cause the terminal device to perform the following: After receiving the RRC message, an indication message is received. The indication message is used to indicate that the number of OFDM symbols in the data area of ​​the subframe of the first carrier is equal to the number of OFDM symbols in the subframe. The RRC message is used to indicate cross-carrier scheduling configuration. The indication message is located in the data area of ​​the subframe of the first carrier. The device receives control information and data information. The control information is used to instruct the terminal device to receive and parse at least one control parameter of the data information. The control information is located in the control region of a subframe of the second carrier, and the data information is located in the data region of a subframe of the first carrier and the second carrier. In response to the received instruction information and control information, the data information is parsed to obtain the data information.

11. The device according to claim 10, characterized in that, The indication information is Control Format Indicator (CFI) information, and the indication information is a preset value used to indicate that the number of OFDM symbols in the data area of ​​the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

12. The device according to claim 10, characterized in that, The indication information is control unit MCE information, used to indicate that the number of OFDM symbols in the data area of ​​the subframe after the Nth subframe following the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

13. A chip, characterized in that, Includes at least one processor and interface; The interface is used to send an indication message after sending an RRC message. The indication message is used to indicate that the number of OFDM symbols in the data area of ​​the subframe of the first carrier is equal to the number of OFDM symbols in the subframe. The RRC message is used to indicate cross-carrier scheduling configuration. The indication message is located in the data area of ​​the subframe of the first carrier. The interface is used to send control information and data information. The control information is used to instruct the terminal device to receive and parse at least one control parameter of the data information. The control information is located in the control region of a subframe of the second carrier, and the data information is located in the data region of a subframe of the first carrier and the second carrier.

14. The chip according to claim 13, characterized in that, The indication information is Control Format Indicator (CFI) information, and the indication information is a preset value used to indicate that the number of OFDM symbols in the data area of ​​the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

15. The chip according to claim 13, characterized in that, The indication information is control unit MCE information, used to indicate that the number of OFDM symbols in the data area of ​​the subframe after the Nth subframe following the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

16. A chip, characterized in that, include: At least one processor and interface; The interface is used to input an RRC message to the processor and then input indication information to the processor. The indication information is used to indicate that the number of OFDM symbols in the data area of ​​the subframe of the first carrier is equal to the number of OFDM symbols in the subframe. The RRC message is used to indicate cross-carrier scheduling configuration. The indication information is located in the data area of ​​the subframe of the first carrier. The interface is used to input control information and data information to the processor. The control information is used to instruct the terminal device to receive and parse at least one control parameter of the data information. The control information is located in the control region of a subframe of the second carrier, and the data information is located in the data region of a subframe of the first carrier and the second carrier. The processor is configured to parse the data information based on the instruction information and the control information to obtain the data information.

17. The chip according to claim 16, characterized in that, The indication information is Control Format Indicator (CFI) information, and the indication information is a preset value used to indicate that the number of OFDM symbols in the data area of ​​the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

18. The chip according to claim 16, characterized in that, The indication information is control unit MCE information, used to indicate that the number of OFDM symbols in the data area of ​​the subframe after the Nth subframe following the subframe where the indication information is located is equal to the number of OFDM symbols in the subframe.

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