WO2018228439A1

WO2018228439A1 - Method, apparatus and system for sending control information

Info

Publication number: WO2018228439A1
Application number: PCT/CN2018/091098
Authority: WO
Inventors: 张兴炜; 薛丽霞; 冯淑兰; 黎超
Original assignee: 华为技术有限公司
Priority date: 2017-06-13
Filing date: 2018-06-13
Publication date: 2018-12-20
Also published as: CN109088697A; CN109088697B

Abstract

Disclosed are a method, apparatus and system for sending control information, so that a terminal device can acquire indication information existing in control information with lower signalling overheads. The method comprises: a terminal device receiving first control information sent by a base station, wherein the first control information includes configuration information about second control information, and the configuration information comprises at least one of the length of the second control information, a serial number of the second control information, the length of a field and a serial number of the field; and the terminal device receiving the second control information sent by the base station, wherein the length of the second control information and/or field composition are determined by the terminal device according to the first control information. Thus, the terminal device can acquire indication information in control information needing to be detected with lower signalling overheads.

Description

Method, device and system for transmitting control information

This application claims the priority of the Chinese Patent Application filed on June 13, 2017, the Chinese Patent Office, the application number is 201710444262.0, and the application name is "a method, a device and a system for transmitting control information", the entire contents of which are incorporated by reference. In this application.

Technical field

The present application relates to the field of communications, and in particular, to a method, an apparatus, and a system for transmitting control information.

Background technique

The 5th Generation (5G) communication system needs to have higher performance than the previous communication system. The 5G new base station (New RAT, NR) defines a new air interface access technology to support a user experience rate of 0.1 to 1 Gbps, a connection density of one million per square kilometer, and an end-to-end delay of milliseconds per square. The traffic density of several tens of Tbps, the mobility of more than 500Km per hour and the peak rate of tens of Gbps.

There are a lot of information in the 5G NR that need dynamic indication, for example, including resource-related indication information, timing-related indication information, Coordinated Multiple Points Transmission/Reception (CoMP) related indication information, multiple input and multiple output (Multiple-Input). Multiple-Output (MIMO) technology related indication information, control channel related indication information, scheduling related indication information, initial access related indication information, measurement trigger related indication information, reference signal related indication information, hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) related indication information, etc. If the indication information is all carried in Downlink Control Information (DCI), the total overhead of DCI is too large. In order to reduce the signaling overhead, a possible solution is to carry part of the indication information in the DCI, and avoid the total overhead of the DCI. In this case, how to design a transmission scheme of the control information, so that the terminal equipment can have lower signaling. Obtaining the indication information existing in the DCI is a problem that needs to be solved.

Summary of the invention

The embodiment of the present application provides a method, an apparatus, and a system for sending control information, so that the terminal device can obtain the indication information existing in the control information with a lower signaling overhead.

The specific technical solutions provided by the embodiments of the present application are as follows:

In a first aspect, a method for transmitting control information is provided, including:

Receiving first control information sent by the base station, where the first control information includes configuration information of the second control information, where the configuration information includes a length of the second control information, a number of the second control information, a length of the field, and a number of the field At least one of them;

Receiving second control information sent by the base station, where the length and/or the field composition of the second control information is determined according to the first control information.

The first control information includes the configuration information of the second control information, so that after receiving the first control information, the terminal device can quickly determine the length and/or field composition of the second control information that needs to be detected according to the first control information. , reducing signaling overhead.

In conjunction with the first aspect, in one possible design, the configuration information further includes an presence indication of whether the field is present in the second control information.

In this design, the terminal device determines whether the corresponding field exists in the second control information by using the presence indication in the configuration information, thereby determining a field to be detected in the second control information, reducing the number of blind detections, and improving detection efficiency.

With reference to the first aspect, in a possible design, the first control information is one of a radio resource control RRC information element IE, a media intervention control MAC control element CE, downlink control information, and broadcast information.

With reference to the first aspect, in a possible design, the second control information is downlink control information; when the first control information is downlink control information, the first control information is public downlink control information, or The first control information is downlink control information received before the second control information.

With reference to the first aspect, in a possible design, the length and/or the field composition of the second control information is determined according to the first control information, and includes:

Calculating a length of a field whose length is not zero or a field other than a field indicating that it does not exist, and obtaining a length of the second control information that needs to be detected;

Or calculating a length of a field that is not zero in length or a field other than the field indicating that there is no existence, and a sum of lengths of the predefined field, and obtaining a length of the second control information that needs to be detected;

Or, obtaining a field whose length is not zero or a field in which the field indicating the presence is present is obtained by the field of the second control information;

Or, obtaining the length of the field corresponding to the number of the field, calculating the sum of the lengths of the fields corresponding to the number of the field, and obtaining the length of the second control information that needs to be detected;

Or determining a field composition of the second control information based on an arrangement order of the number of the fields.

In this design, the terminal device can determine the length and/or field composition of the second control information to be detected by using multiple combinations of the foregoing solutions in a flexible manner.

With reference to the first aspect, in a possible design, the first control information that is sent by the base station is received by the first resource, where the first resource includes a time domain resource and a frequency domain resource used by the first control information. At least one of a spatial domain resource, a code domain resource, and a power domain resource, wherein different first resources are mapped to different field configuration information.

Determining a length and/or a field composition of the second control information that needs to be detected according to the first control information and the first resource.

In this design, the terminal device determines the length and/or the field composition of the second control information in an implicit manner according to the first resource that sends the first control information, without signaling indication, and reduces signaling overhead.

In combination with the first aspect, in a possible design, the method further includes:

Receiving, by the base station, third control information, where the third control information includes a length indication of the second control information;

Determining a length of the second control information based on a length indication of the second control information.

In this design, the terminal device determines the length of the second control information by using the length indication included in the third control information, and the implementation manner is simple and the operability is strong.

Receiving a transmission mode configured by the base station;

Determining a length of the second control information based on the transmission mode.

The length of the second control information is determined according to a predefined standard length or length threshold.

In this design, limiting the standard length or length threshold of the second control information can reduce the number of blind detections of the second control information by the terminal device and improve the detection efficiency.

In a second aspect, a method for transmitting control information is provided, including:

Sending first control information to the terminal device, where the first control information includes configuration information of the second control information, where the configuration information includes a length of the second control information, a number of the second control information, a length of the field, and a number of the field At least one of them;

Sending second control information to the terminal device.

In the above solution, the base station configures the first control information including the configuration information of the second control information to the terminal device, so that the terminal device can quickly determine, according to the first control information, the length and/or field composition of the second control information that needs to be detected. , reducing signaling overhead.

With reference to the second aspect, in a possible design, the configuration information further includes an presence indication that the field exists in the second control information.

In this design, the base station can determine whether the corresponding field in the first control information exists in the second control information by using the presence indication in the configuration information, thereby determining a field to be detected in the second control information, and reducing the field. The number of blind inspections improves detection efficiency.

With reference to the second aspect, in a possible design, the first control information is one of a radio resource control RRC information element IE, a media intervention control MAC control element CE, downlink control information, and broadcast information.

With reference to the second aspect, in a possible design, the second control information is downlink control information; when the first control information is downlink control information, the first control information is public downlink control information, or The first control information is downlink control information received before the second control information.

With reference to the second aspect, in a possible design, the first control information is sent to the terminal device on a first resource, where the first resource includes a time domain resource used to send the first control information, At least one of a frequency domain resource, a spatial domain resource, a code domain resource, and a power domain resource, wherein different first resources are mapped to different field configuration information.

In combination with the second aspect, in a possible design, the method further includes:

Sending third control information to the terminal device, where the third control information includes a length indication of the second control information.

And configuring the transmission mode to the terminal device, so that the terminal device determines the length of the second control information.

In a third aspect, a device for transmitting control information is provided, and the device may be a terminal device or a chip in the terminal device. The apparatus can include a processing unit and a transceiver unit. When the device is a terminal device, the processing unit may be a processor, the transceiver unit may be a transceiver; the terminal device may further include a storage unit, the storage unit may be a memory; the storage unit is configured to store an instruction, the processing The unit executes the instructions stored by the storage unit to cause the terminal device to perform the corresponding function in the first aspect described above. When the device is a chip in the terminal device, the processing unit may be a processor, the transceiver unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes instructions stored by the storage unit to make the terminal The device performs the corresponding function in the above first aspect, and the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or may be a storage unit located outside the chip in the terminal device (for example, only Read memory, random access memory, etc.).

In a fourth aspect, a device for transmitting control information is provided, which may be a base station or a chip in a base station. The apparatus can include a processing unit and a transceiver unit. When the device is a base station, the processing unit may be a processor, the transceiver unit may be a transceiver; the base station may further include a storage unit, the storage unit may be a memory; the storage unit is configured to store an instruction, and the processing unit performs The storage unit stores instructions to cause the base station to perform the corresponding functions in the first aspect described above. When the device is a chip in a base station, the processing unit may be a processor, the transceiver unit may be an input/output interface, a pin or a circuit, etc.; the processing unit executes instructions stored by the storage unit to cause the base station to execute The corresponding function in the above first aspect, the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or may be a storage unit located outside the chip in the base station (for example, a read only memory, Random access memory, etc.).

In a fifth aspect, a communication system is provided, including the terminal device and the base station involved in the foregoing embodiments.

In a sixth aspect, a computer storage medium is provided for storing computer software instructions for use in the terminal device, comprising a program designed to perform the above aspects.

In a seventh aspect, a computer storage medium is provided for storing computer software instructions for use by the base station, comprising a program designed to perform the above aspects.

In an eighth aspect, a computer program product comprising instructions, when executed on a computer, causes the computer to perform the methods described in the various aspects above.

DRAWINGS

FIG. 1 is a flowchart of a method for transmitting control information according to an embodiment of the present application;

2a, 2b, and 2c are schematic diagrams showing the composition of the first control information in the embodiment of the present application;

FIG. 3 is a flowchart of a method for sending control information according to an embodiment of the present application;

4a is a schematic structural diagram of a terminal device according to an embodiment of the present application;

4b is a schematic structural diagram of hardware of a terminal device according to an embodiment of the present application;

5a is a schematic structural diagram of a base station according to an embodiment of the present application;

FIG. 5b is a schematic structural diagram of a hardware of a base station according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments.

The term “and/or” in the embodiment of the present application is merely an association relationship describing an association object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist at the same time. There are three cases of B alone. In addition, the character “/” in the embodiment of the present application generally indicates that the context related object is an “or” relationship.

Multiple means two or more.

The method for transmitting control information according to the embodiment of the present application is applicable to a Long Term Evolution (LTE) system, or a 5G system. In addition, the method for transmitting control information in the embodiment of the present application is also applicable to other wireless communication systems. For example, Global System for Mobile Communication (GSM), Universal Mobile Telecommunications System (UMTS), Code Division Multiple Access (CDMA) system, and new network systems.

The base station in the embodiment of the present application can be used to convert the received air frame and the Internet Protocol (IP) packet into each other as a router between the wireless terminal device and the rest of the access network, where the access is performed. The rest of the network may include an IP network; in addition, the base station in the embodiment of the present application may also coordinate attribute management of the air interface. For example, the base station in the embodiment of the present application may be a Global System for Mobile Communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA). It is a base station (NodeB) in Wideband Code Division Multiple Access (WCDMA), and may also be an evolved base station (eNB or e-NodeB) in LTE, or may be in a 5G system. The central unit or the data unit in the base station, or the 5G system, is not limited in the embodiment of the present application.

The terminal device in the embodiment of the present application may be a device for providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. The terminal device may also be a wireless terminal device, wherein the wireless terminal device may communicate with one or more core networks via a Radio Access Network (RAN), and the wireless terminal device may be a mobile terminal device, such as a mobile phone ( Or a "cellular" telephone, or a computer with a mobile terminal device, for example, a computer with a mobile terminal device can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device with a wireless access network Exchange language and/or data. For example, the wireless terminal device can also be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal number. Assistant (Personal Digital Assistant, PDA) and other devices. The wireless terminal device may also be referred to as a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, and an Access Point. , Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, User Equipment (UE), etc. .

The embodiment of the present application provides a method, an apparatus, and a system for sending control information, so that the terminal device can obtain the indication information existing in the control information with a lower signaling overhead. The method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.

FIG. 1 is a schematic flowchart diagram of a method for sending control information provided by an embodiment of the present application, where the process may be specifically implemented by hardware, software programming, or a combination of hardware and software.

The terminal device can be configured to perform the process shown in FIG. 1. The function module of the terminal device for performing the transmission scheme of the control information provided by the embodiment of the present application can be implemented by hardware, software programming, and a combination of hardware and software. The hardware may include one or more signal processing and/or application specific integrated circuits.

As shown in Figure 1, the process specifically includes the following processes:

Step 10: The terminal device receives the first control information sent by the base station, where the first control information includes configuration information of the second control information, where the configuration information includes a length of the second control information, a number of the second control information, and a field At least one of the length and the number of the field.

Further, the field configuration information further includes an presence indication that the field exists in the second control information.

Specifically, the presence indication in the embodiment of the present application may be indicated by 1 bit, the status 1 indicates that the field exists in the second control information, and the status 0 indicates that the field does not exist in the second control information; The field is jointly coded, or the redundant state of other fields is used. When the redundant state is used, it means that it does not exist. When the normal state is used, it indicates that it exists. It can also be indicated by the length of the field. When the length is 0, it means that it does not exist. When the length is If it is not 0, it means that it exists.

The first control information is a Radio Resource Control (RRC) Information Element (IE) or a Medium Access Control (MAC) Control Element (CE) or downlink control information. Or broadcast information. The second control information is downlink control information.

Further, when the first control information is downlink control information, the first control information is common downlink control information, or the first control information is downlink control information received before the second control information. .

The field is composed of at least one of a predefined field, a variable field, and an optional field. The predefined field is a field that must exist in the second control information and has a fixed length; the variable field is a variable length field in the second control information; the optional field is a field that may or may not exist in the second control information.

Step 11: The terminal device receives the second control information sent by the base station, where the length and/or the field composition of the second control information is determined by the terminal device according to the first control information.

The field composition of the second control information refers to which fields the second control information includes, the length of the fields, and the order of the fields. Different fields in the second control information are used to indicate different information or functions.

Specifically, when the terminal device determines the length and/or the field composition of the second control information that needs to be detected based on the first control information, the terminal device may be implemented by:

Manner 1: The terminal device calculates a length of a field that is not zero in length or a field other than a field that is not present, and obtains a length of the second control information that needs to be detected.

It should be noted that the presence indication in the field configuration information may be used to indicate whether the field exists in the second control information, and may also be used to indicate whether the field does not exist in the second control information.

Manner 2: The terminal device calculates a length of a field that is not zero in length or a field other than a field that is not present, and a length of the predefined field, and obtains a length of the second control information that needs to be detected. .

Manner 3: The terminal device acquires a field in which the length of the first control information is not zero or the field indicating the presence is present, and the second control information is obtained.

Manner 4: The terminal device acquires the length of the field corresponding to the number of the field, calculates the sum of the lengths of the fields corresponding to the number of the field, and obtains the length of the second control information that needs to be detected.

Manner 5: The terminal device determines a field composition of the second control information based on an arrangement order of the number of the fields.

In the first possible design, the field of the second control information is composed of a predefined field and a variable length field, as shown in FIG. 2a. As shown in FIG. 2a, the first control information includes 12 fields, and the predefined field is in front of the variable field. Of course, this is only an indication, and the order of the fixed field and the variable field is not limited in the present application.

As shown in FIG. 2a, the field configuration information of each field in the first control information includes the length of the field. In this case, the presence or absence of the presence indication may be represented by a length, and the length is 0, that is, the length does not exist, and the length is not 0. For existence. Optionally, in a possible design, the first control information only indicates field configuration information of the variable field in the second control information, and the field configuration information of the predefined field is pre-protocol specified, and the first control information is not needed. Instructions.

Further, after receiving the first control information, the terminal device extracts a field whose length is not zero in the first control information, and calculates a total length of the second control information to be detected during the period of time, and the length is not The order of the zero field is composed of the fields of the second control information. Alternatively, the terminal device extracts a field of the first control information except the field indicating that the field does not exist, and calculates the total length of the second control information, which is the length of the second control information to be detected during the period of time, and the length is not zero. The order of the fields before and after is composed of the fields of the second control information.

In the second possible design, the field of the second control information is composed of a predefined field, a variable length field, and an optional field, as shown in FIG. 2b. As shown in FIG. 2b, the first control information includes 12 fields, and the predefined field is in front of the variable field and the optional field, because if the variable field or the optional field is in front, once the decoding error occurs, for example, the variable field is Decoding to 3 bits, but actually 4 bits, may affect the decoding of subsequent fields. Putting a fixed-length predefined field first will ensure at least the correct decoding of the predefined field. Of course, this is only an indication, and the order of the fixed field, the variable field, and the optional field is not limited in this application.

As shown in FIG. 2b, the field configuration information of each field in the first control information includes the length of the field, whether there is an existing indication in the second control information, that is, each field has two parameters, and the field length indicates the field. The number of bits, the presence indication is used to indicate whether the field is present or absent in the second control information to be detected, as shown in Figure 2b. The first control information includes an optional field in addition to the predefined field and the variable field, and the predefined field may be in front of the variable field and the optional field. Optionally, in a possible design, the first control information only indicates field configuration information of the variable field and the optional field in the second control information, and the field configuration information of the predefined field is pre-protocol specified, The first control information is indicated.

Further, after receiving the first control information, the terminal device has other fields except the field indicated as non-existent in the optional field, including the predefined field, the variable field, and the optional field indicating that the presence is present. All are extracted, and the sum of the lengths is calculated as the length of the second control information to be detected during the period of time, and the order of the front and back is the field composition of the second control information.

If all the fields that may appear in the second control information are relatively large, for example, there are 50, and more than half of the fields may be optional fields, optionally, the base station notifies by the first control information or by implicit means. The number of the field of the second control information to be detected by the terminal device during the current period of time, and the field corresponding to each number has a predetermined fixed length, as shown in FIG. 2c.

Further, the terminal device acquires the length of the field corresponding to the number of the field, calculates the sum of the lengths of the fields corresponding to the number of the field, and obtains the length of the second control information to be detected, and the order of the number of the field is the first The field consisting of two control information.

Specifically, when the base station notifies the terminal device of the field configuration information of the second control information to be detected in the current period of time, the terminal device sends the base station to send on the first resource. The first control information, the first resource includes at least one of a time domain resource, a frequency domain resource, an air domain resource, a code domain resource, and a power domain resource used by the first control information, where different The first resource maps to different field configuration information.

Further, the terminal device determines, according to the first control information and the first resource, a length and/or a field composition of the second control information that needs to be detected.

For example, the base station indicates the field composition of the second control information in an implicit manner. Specifically, the base station sends the first control information according to the field composition of the first resource that sends the first control information and is mapped to the second control information. A resource includes a time domain/frequency domain/space domain/code domain/power domain resource, such as a time slot number, a symbol number, a subframe number, a radio frame number, a slot type, etc.; a frequency domain bandwidth , part of bandwidth, subband, number of resource blocks (RB), RB number, etc.; beam number of the air domain, antenna port, etc., various coding resources of the code domain, such as root sequence, cyclic shift, orthogonal mask Etc; various power parameters of the power domain. For example, if the scheduled time slot is a DL-only slot, the terminal device only blindly checks the corresponding downlink control information length (DL DCI size) in the scheduled time slot of the corresponding sequence; The length mapping of the broadband (100-400 M) terminal device and the second control information of the narrowband-equipped terminal device blind detection is different.

It should be noted that the implicit mode can be used in combination with the explicit signaling mode. For example, the base station notifies the field of the second control information by explicit signaling, that is, the first control information, and the terminal device passes the implicit mode. The resource parameter of the first resource filters out the length of the second control information.

Alternatively, the terminal device determines the length of the second control information according to a predefined standard length or length threshold. Or the terminal device receives the third control information sent by the base station, where the third control information includes a length indication of the second control information; and the terminal device determines, according to the length indication of the second control information The length of the second control information.

The standard length refers to the length of the predefined finite kind of second control information, that is, the length of the second control information can only be these values. The terminal device determines the length of the second control information according to at least one of the standard lengths.

The length threshold refers to a plurality of different threshold intervals in which the length of the second control information is divided into different lengths. The length of the second control information that the terminal device needs to detect only falls within a limited interval, and only a limited number of intervals are taken in one interval. value. For example, the length of the second control information is divided into a plurality of intervals, or a length threshold of a length of the plurality of second control information is set, for example:

Interval 1: <20 bits

Interval 2: [20, 30) bits

Interval 3: [30, 40) bits

Interval 4: [40, 50) bits

Interval 5: >=50 bits

In order to reduce the number of blind detections of the second control information by the terminal device, the terminal device limits the number of blind detections in a time slot to a specific number, for example, only one interval is blindly detected in one time slot; The length of the second control information, such as the number of bits of the second control information that limits the blind detection, is a specific number, for example, one interval has two bit values that require blind detection. A bit value of the second control information is composed of a specific field. The base station notifies the terminal device of the interval number or the length threshold, and the terminal device filters out a limited number of lengths in a specific interval by using the slot number/slot type/subband number.

Alternatively, the terminal device determines, according to the number of the second control information, a length and/or a field composition of the second control information that needs to be detected.

Specifically, the base station and the terminal device pre-define a pattern of a limited number of second control information, and for each pattern number, the base station notifies the terminal device by using the first control information or by implicitly. The design method of each pattern may be similar to the design of FIG. 2a to FIG. 2c described above, that is, the length of the field and/or the presence indication of presence or absence may be included, and the field number may also be included. In this way, the terminal device can determine the length and/or the field composition of the second control information that needs to be detected according to the number of the second control information.

In a possible implementation, the terminal device receives a transmission mode configured by the base station; and the terminal device determines a length of the second control information based on the transmission mode.

Correspondingly, FIG. 3 is a schematic flowchart of a method for sending control information of a base station side according to an embodiment of the present application. The process may be implemented by hardware, software programming, or a combination of hardware and software.

The base station can be configured to perform the process shown in FIG. 1. The function module in the base station for performing the transmission scheme of the control information provided by the embodiment of the present application can be implemented by hardware, software programming, and a combination of hardware and software. One or more signal processing and/or application specific integrated circuits may be included.

As shown in FIG. 3, the process specifically includes the following processes:

Step 30: The base station sends the first control information to the terminal device, where the first control information includes second control information configuration information, where the configuration information includes a length of the second control information, a number of the second control information, a length of the field, At least one of the number of fields.

The configuration information further includes an presence indication that the field exists in the second control information.

In a possible design, the base station sends the first control information to the terminal device on a first resource, where the first resource includes a time domain resource and a frequency domain used by the first control information. At least one of a resource, an airspace resource, a code domain resource, and a power domain resource, wherein different first resources are mapped to different field configuration information.

Step 31: The base station sends the second control information to the terminal device.

Specifically, the first control information is RRC IE or MAC CE or downlink control information or broadcast information. The second control information is downlink control information. When the first control information is downlink control information, the first control information is public downlink control information, or the first control information is downlink control information received before the second control information.

Optionally, the base station sends third control information to the terminal device, where the third control information includes a length indication of the second control information.

Based on the same concept, the embodiment of the present application further provides a terminal device, which is used to perform the action or function of the terminal device in the foregoing method embodiment.

Based on the same concept, the embodiment of the present application further provides a base station, where the base station is configured to perform the action or function of the base station in the foregoing method embodiment.

In order to save space, the content of the device part can be specifically seen in the method embodiment, and the repeated description will not be repeated.

As shown in FIG. 4a, the terminal device 400a of the embodiment of the present application includes a processing unit 410a and a receiving unit 420a, where:

The receiving unit 420a is configured to receive first control information sent by the base station, where the first control information includes configuration information of the second control information, where the configuration information includes a length of the second control information, a number of the second control information, and a field. At least one of a length and a field number;

The processing unit 410a is configured to determine, according to the first control information, a length and/or a field composition of the second control information;

The receiving unit 420a is further configured to receive second control information that is sent by the base station, where a length and/or a field composition of the second control information is determined by the processing unit 410a according to the first control information.

Optionally, the configuration information further includes an presence indication that the field exists in the second control information.

Optionally, the first control information is one of a radio resource control RRC information element IE, a media intervention control MAC control element CE, downlink control information, and broadcast information.

Optionally, the second control information is downlink control information; when the first control information is downlink control information, the first control information is public downlink control information, or the first control information is The downlink control information received before the second control information is described.

Optionally, the processing unit is further configured to:

Or, calculating a length of a field that is not zero in length or a field other than the field indicating that there is no existence, and a sum of lengths of the predefined field, obtaining a length of the second control information that needs to be detected;

Optionally, the receiving unit 420a is further configured to: receive, by using the first resource, the first control information that is sent by the base station, where the first resource includes a time domain resource and a frequency domain that are used by the first control information. At least one of a resource, an airspace resource, a code domain resource, and a power domain resource, wherein different first resources are mapped to different field configuration information.

Optionally, the processing unit is further configured to:

Optionally, the receiving unit 420a is further configured to:

The processing unit 410a is further configured to determine a length of the second control information based on a length indication of the second control information.

Optionally, the receiving unit 420a is further configured to:

Receiving a transmission mode configured by the base station;

The processing unit 410a is further configured to determine a length of the second control information based on the transmission mode.

Optionally, the processing unit 410a is further configured to:

For all possible implementations of the terminal device 400a in the embodiment of the present application, refer to all possible implementation manners of the terminal device in the embodiment of the present application.

It should be noted that in the embodiment of the present application, the processing unit 410a may be implemented by a processor, and the receiving unit 410a may be implemented by a transceiver. As shown in FIG. 4b, the terminal device 400b may include a processor 410b, a transceiver 420b, and a memory 430b. The memory 430b may be used to store a program/code pre-installed at the time of shipment of the terminal device 400b, or may store a code or the like for execution of the processor 410b.

The processor 410b may be a general-purpose CPU, a microprocessor, an ASIC, or one or more integrated circuits for performing related operations to implement the technical solutions provided by the embodiments of the present application.

It should be noted that although the terminal device 400b shown in FIG. 4b only shows the processor 410b, the transceiver 420b, and the memory 430b, in a specific implementation process, those skilled in the art should understand that the terminal device 400b also includes a normal implementation. Other devices necessary for operation. At the same time, those skilled in the art will appreciate that the terminal device 400b may also include hardware devices that implement other additional functions, depending on the particular needs. Moreover, those skilled in the art will appreciate that the terminal device 400b may also only include the devices or modules necessary to implement the embodiments of the present application, and does not necessarily include all of the devices shown in FIG. 4b.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the above program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The above storage medium may be a magnetic disk, an optical disk, a ROM, a RAM, or the like.

As shown in FIG. 5a, the first base station 500a in the embodiment of the present application includes: a processing unit 510a and a sending unit 520a, where:

The processing unit 510a is configured to control the sending unit to send information;

The sending unit 520a is configured to send first control information to the terminal device, where the first control information includes configuration information of the second control information, where the configuration information includes a length of the second control information, and a number of the second control information. At least one of a length of a field, a number of a field;

The sending unit 520a is further configured to send the second control information to the terminal device.

Optionally, the sending unit 520a sends the first control information to the terminal device on a first resource, where the first resource includes a time domain resource and a frequency domain resource used by the first control information. At least one of a spatial domain resource, a code domain resource, and a power domain resource, wherein different first resources are mapped to different field configuration information.

Optionally, the sending unit 520a is further configured to:

For all possible implementation manners of the base station 500a in this embodiment of the present application, refer to all possible implementation manners of the base station in this embodiment of the present application.

It should be noted that in the embodiment of the present application, the processing unit 510a may be implemented by a processor, and the sending unit 520a may be implemented by a transceiver. As shown in Figure 5b, base station 500b can include a processor 510b, a transceiver 520b, and a memory 530b. The memory 530b may be used to store a program/code pre-installed at the time when the first base station 500b is shipped, or may store a code or the like when the processor 510b is executed.

The processor 510b may be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for performing related operations. The technical solution provided by the embodiment of the present application is implemented.

It should be noted that although the base station 500b shown in FIG. 5b only shows the processor 510b, the transceiver 520b, and the memory 530b, in a specific implementation process, those skilled in the art should understand that the base station 500b also includes a normal operation. Other devices that are required. At the same time, those skilled in the art will appreciate that the base station 500b may also include hardware devices that implement other additional functions, depending on the particular needs. Moreover, those skilled in the art will appreciate that the base station 500b may also include only the devices or modules necessary to implement the embodiments of the present application, and does not necessarily include all of the devices shown in FIG. 5b.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the above program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Therefore, the embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, embodiments of the present application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A method for transmitting control information, comprising:

Receiving first control information sent by the base station, where the first control information includes configuration information of the second control information, where the configuration information includes a length of the second control information, a number of the second control information, a length of the field, and a number of the field At least one of them;

Receiving second control information sent by the base station, where the length and/or the field composition of the second control information is determined according to the first control information.
The method according to claim 1, wherein the length and/or the field composition of the second control information is determined according to the first control information, and includes:

Determining, according to the number of the second control information, a field composition of the second control information that needs to be detected;

Or calculating a length of a field whose length is not zero or a field other than the field indicated as not existing, and obtaining a length of the second control information that needs to be detected;

Or, calculating a length of a field that is not zero in length or a field other than the field indicating that there is no existence, and a sum of lengths of the predefined field, obtaining a length of the second control information that needs to be detected;

Or, obtaining a field whose length is not zero or a field in which the field indicating the presence is present is obtained by the field of the second control information;

Or, obtaining the length of the field corresponding to the number of the field, calculating the sum of the lengths of the fields corresponding to the number of the field, and obtaining the length of the second control information that needs to be detected;

Or determining a field composition of the second control information based on an arrangement order of the number of the fields.
The method according to claim 2, wherein the field composition of the second control information corresponding to the number of the second control information is predefined.
The method according to claim 1 or 2, wherein receiving the first control information sent by the base station comprises: receiving, by the first resource, the first control information sent by the base station, where the first resource includes a sending station At least one of a time domain resource, a frequency domain resource, an air domain resource, a code domain resource, and a power domain resource used by the first control information, where different first resources are mapped to different field configuration information.
The method according to claim 4, wherein the length and/or the field composition of the second control information is determined according to the first control information, and includes:

Determining a length and/or a field composition of the second control information that needs to be detected according to the first control information and the first resource.
The method of any of claims 1-5, wherein the method further comprises:

Receiving, by the base station, third control information, where the third control information includes a length indication of the second control information;

Determining a length of the second control information based on a length indication of the second control information.
The method of any of claims 1-6, wherein the method further comprises:

Receiving a transmission mode configured by the base station;

Determining a length of the second control information based on the transmission mode.
The method of any of claims 1-7, wherein the method further comprises:

The length of the second control information is determined according to a predefined standard length or length threshold.
A method for transmitting control information, comprising:

Sending first control information to the terminal device, where the first control information includes configuration information of the second control information, where the configuration information includes a length of the second control information, a number of the second control information, a length of the field, and a number of the field At least one of them;

Sending second control information to the terminal device.
The method of claim 9, wherein the transmitting the first control information to the terminal device comprises: transmitting the first control information to the terminal device on a first resource, where the first resource includes sending At least one of a time domain resource, a frequency domain resource, an air domain resource, a code domain resource, and a power domain resource used by the first control information, where different first resources are mapped to different field configuration information.
The method of any of claims 9 or 10, wherein the method further comprises:

Sending third control information to the terminal device, where the third control information includes a length indication of the second control information.
The method of any of claims 9-11, wherein the method further comprises:

And configuring the transmission mode to the terminal device, so that the terminal device determines the length of the second control information.
A terminal device, comprising:

a receiving unit, configured to receive first control information sent by the base station, where the first control information includes configuration information of the second control information, where the configuration information includes a length of the second control information, a number of the second control information, and a field At least one of a length and a field number;

a processing unit, configured to determine, according to the first control information, a length and/or a field composition of the second control information;

The receiving unit is further configured to receive second control information sent by the base station.
The terminal device according to claim 13, wherein the processing unit is further configured to:

Determining, by the terminal device, a field composition of the second control information that needs to be detected according to the number of the second control information;

Or calculating a length of a field whose length is not zero or a field other than the field indicated as not existing, and obtaining a length of the second control information that needs to be detected;

Or, calculating a length of a field that is not zero in length or a field other than the field indicating that there is no existence, and a sum of lengths of the predefined field, obtaining a length of the second control information that needs to be detected;

Or, obtaining a field whose length is not zero or a field in which the field indicating the presence is present is obtained by the field of the second control information;

Or, obtaining the length of the field corresponding to the number of the field, calculating the sum of the lengths of the fields corresponding to the number of the field, and obtaining the length of the second control information that needs to be detected;

Or determining a field composition of the second control information based on an arrangement order of the number of the fields.
The terminal device according to claim 14, wherein the field composition of the second control information corresponding to the number of the second control information is predefined.
The terminal device according to claim 13 or 14, wherein the receiving unit is further configured to: receive the first control information sent by the base station on the first resource, where the first resource includes sending the At least one of a time domain resource, a frequency domain resource, an air domain resource, a code domain resource, and a power domain resource used by the control information, wherein different first resources are mapped to different field configuration information.
The terminal device according to claim 16, wherein the processing unit is further configured to:

Determining a length and/or a field composition of the second control information that needs to be detected according to the first control information and the first resource.
The terminal device according to any one of claims 13-17, wherein the receiving unit is further configured to:

Receiving, by the base station, third control information, where the third control information includes a length indication of the second control information;

The processing unit is further configured to determine a length of the second control information based on a length indication of the second control information.
The terminal device according to any one of claims 13 to 18, wherein the receiving unit is further configured to:

Receiving a transmission mode configured by the base station;

The processing unit is further configured to determine a length of the second control information based on the transmission mode.
The terminal device according to any one of claims 13 to 19, wherein the processing unit is further configured to:

The length of the second control information is determined according to a predefined standard length or length threshold.
A base station, comprising: a processing unit and a sending unit:

The processing unit is configured to control the sending unit to send information;

The sending unit is configured to send first control information to the terminal device, where the first control information includes configuration information of the second control information, where the configuration information includes a length of the second control information, a number of the second control information, At least one of the length of the field and the number of the field;

The sending unit is further configured to send the second control information to the terminal device.
The base station according to claim 21, wherein the sending unit sends the first control information to the terminal device on a first resource, where the first resource includes sending the first control information to use At least one of a time domain resource, a frequency domain resource, an air domain resource, a code domain resource, and a power domain resource, wherein different first resources are mapped to different field configuration information.
The base station according to claim 21 or 22, wherein the sending unit is further configured to:

Sending third control information to the terminal device, where the third control information includes a length indication of the second control information.
The base station according to any one of claims 21 to 23, wherein the transmitting unit is further configured to:

And configuring the transmission mode to the terminal device, so that the terminal device determines the length of the second control information.
The method according to any one of claims 1 to 12, or the base station according to any one of claims 13 to 20, or the base station according to any one of claims 21 to 24, wherein the configuration information further includes A presence indication of whether the field is present in the second control information.
A method according to any one of claims 1 to 12, 25 or a terminal device according to any one of claims 13 to 20, or a base station according to any one of claims 21 to 24, wherein: The first control information is one of a radio resource control RRC information element IE, a media intervention control MAC control element CE, downlink control information, and broadcast information.
A method according to any one of claims 1 to 12, 25 to 26 or a terminal device according to any one of claims 13 to 20, 25 to 26 or any one of claims 21-24, 25-26 The base station is characterized in that: the second control information is downlink control information; when the first control information is downlink control information, the first control information is public downlink control information, or the first control information is Downlink control information received before the second control information.
A communication system, comprising: the terminal device according to any one of claims 13-20, 25-27, and the base station according to any one of claims 21-24, 25-27 .
A computer readable storage medium for storing a computer program, the computer program for executing instructions of the method of any of claims 1-12, 25-27.
A transmitting device for controlling information, characterized in that the device comprises a processor and a storage medium, the storage medium storing instructions, when the instructions are executed by the processor, causing the processor to execute the claims The method of any of 1-12, 25-27.