WO2017211219A1

WO2017211219A1 - Signal transmission method, signal decoding method, base station, and user terminal

Info

Publication number: WO2017211219A1
Application number: PCT/CN2017/086831
Authority: WO
Inventors: 王新; 侯晓林; 蒋惠玲; 武田一樹; 永田聡
Original assignee: 株式会社Ntt都科摩
Priority date: 2016-06-06
Filing date: 2017-06-01
Publication date: 2017-12-14
Also published as: JP2019518366A; CN109075918A; JP6644916B2; CN107465489A

Abstract

Provided in an embodiment of the invention are a signal transmission method, a signal decoding method, a base station, and a user terminal. The signal transmission method comprises: generating a compression control signal for a first data signal; configuring an integrating channel unit for the first data signal and the compression control signal, wherein the integrating channel unit is a basic unit integrating the first data signal and the control signal and mapping the integrated signal to communication resources, the first data signal is a data signal associated with a first user, the compression control signal is a downlink control signal associated with the first user, and the compression control signal does not comprise a resource block assignment field; and providing the integrating channel unit and channel units carrying other signals with multiple accesses with respect to the communication resources, and using an assigned communication resource to transmit the signal of the integrating channel unit.

Description

Signal transmission method, signal decoding method, base station, and user terminal

Technical field

The present invention relates to communication technologies, and more particularly to a signal transmission method, a signal decoding method, a base station, and a user terminal.

Background of the invention

With the development of communication requirements, communication has extended from people to things, and the concept of Internet Of Things (IOT) has emerged. How to consider the communication between people, the communication between people and machines, and the communication between machines and machines (such as communication between TV and TV) in a communication framework, Become a problem that needs to be solved now.

Summary of the invention

The embodiments of the present invention provide a signal transmission method, a signal decoding method, a base station, and a user terminal, which are intended to save the overhead of the control signal.

In some embodiments of the present application, a signal transmission method includes:

Generating a compression control signal for the first data signal and constructing an integrated channel unit for the first data signal and the compression control signal, wherein the integrated channel unit is to convert the first data signal and the compression control The signals are integrated and mapped to a basic unit on the communication resource; the first data signal is a data signal of the first user, the compression control signal is a downlink control signal of the first user, and the compression control signal does not include Resource block allocation field;

The integrated channel unit is multiplexed with a channel unit carrying other signals on a communication resource, and the signal of the integrated channel unit is transmitted by using the allocated communication resource.

In some embodiments of the present application, a signal decoding method includes:

Decoding the received signal according to the starting position of the control signal and the signal length, To the control signal;

Extracting the first check field to check the control signal, and after the check of the first check field passes, determining that the control signal is a compression control signal, and according to the length of the signal carried by the compression control signal The control signal is located in a first data signal of the same integrated channel unit for decoding; wherein the integrated channel unit is a basic unit that integrates the first data signal and the compression control signal into a communication resource; The first data signal is a data signal of the first user, the control signal is a downlink control signal of the first user, and the compression control signal does not include a resource block allocation field.

In some embodiments of the present application, a base station includes:

a constructing unit, configured to generate a compression control signal for the first data signal, and construct an integrated channel unit for the first data signal and the compression control signal; wherein the integrated channel unit is the first data signal Integrating with the compression control signal to map to a basic unit on a communication resource; the first data signal is a data signal of a first user, and the compression control signal is a downlink control signal of the first user, The compression control signal does not include a resource block allocation field;

And a multiplexing unit, configured to multiplex the integrated channel unit with a channel unit carrying other signals on a communication resource, and transmit the signal of the integrated channel unit by using the allocated communication resource.

In some embodiments of the present application, a user terminal includes:

a control signal decoding unit, configured to decode the received signal according to a starting position and a signal length of the control signal to obtain the control signal;

a first check unit, configured to extract a first check field to verify the control signal, and send the check result to the data signal decoding unit;

The data signal decoding unit is configured to determine that the control signal is a compression control signal after the verification of the first verification domain passes, and the signal length pair carried according to the compression control signal is located in the same manner as the compression control signal The first data signal of an integrated channel unit is solved And the integrated channel unit is a basic unit that integrates the first data signal and the compression control signal onto a communication resource; the first data signal is a data signal of a first user, where The compression control signal is a downlink control signal of the first user, and the compression control signal does not include a resource block allocation field.

Some embodiments of the present application also provide a non-transitory computer readable storage medium having stored therein machine readable instructions executable by a processor to perform the following operations:

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic flowchart diagram of a signal transmission method according to an embodiment of the present invention.

2 is a schematic structural diagram of conventional downlink control information (DCI).

FIG. 3 is a schematic structural diagram of an integrated channel unit 300 according to an embodiment of the present invention.

4(a) is a schematic diagram of an integrated channel design in an embodiment of the present invention.

4(b) is a schematic diagram of an integrated channel design in an embodiment of the present invention.

4(c) is a schematic diagram of an integrated channel design in an embodiment of the present invention.

FIG. 5 is a schematic diagram of multiplexing of an integrated channel unit and other channel units in an embodiment of the present invention.

FIG. 6 is a schematic diagram of multiplexing of an integrated channel unit and other channel units according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of multiplexing of an integrated channel unit and other channel units according to an embodiment of the present invention.

FIG. 8 is a schematic diagram of multiplexing of an integrated channel unit and other channel units in an embodiment of the present invention.

FIG. 9 is a schematic diagram of multiplexing of an integrated channel unit and other channel units according to an embodiment of the present invention.

FIG. 10 is a schematic flowchart diagram of a method 1000 for performing signal decoding by a user terminal according to an embodiment of the present invention.

FIG. 11 is a schematic flowchart diagram of a method 1100 for performing signal detection by a user terminal according to an embodiment of the present invention.

FIG. 12 is a schematic structural diagram of a base station 1200 according to an embodiment of the present invention.

FIG. 13 is a schematic structural diagram of a user terminal 1300 according to an embodiment of the present invention.

detailed description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings.

The present invention will be further described in detail below with reference to the accompanying drawings.

Embodiments of the present invention provide a solution in which a data signal and a control signal for indicating a transmission position of the data signal are combined into an integrated channel unit for transmission. The integrated channel unit is a basic unit that integrates the first data signal and the compression control signal onto a communication resource. Since the data signal and the corresponding control signal are integrated rather than separated, the overhead of the control signal can be compressed, and the data signal is indicated by the compressed control signal. In one example, the compression control signal refers to a special type of control signal having a smaller number of bits than a conventional control signal, and does not include a conventional resource block assignment field. In addition, since the control signal and the data signal are mapped together, the antenna port of the data portion is identical to the compression control signal, so The compression control signal also does not include an antenna port indication field. Further, whether the integrated channel unit is used for it may be determined according to the data size of the data signal. For data signals whose data size does not exceed the first length, this type of data signal is usually a machine-to-machine communication, or machine-to-human communication, which can be transmitted using an integrated channel unit.

FIG. 1 is a schematic flowchart diagram of a signal transmission method according to an embodiment of the present invention. In one example, the method 100 includes the following operations.

At step 101, a compression control signal is generated for the first data signal. The first data signal is a data signal of the first user, and the compression control signal is a downlink control signal of the first user.

In one example, the compression control signal is relative to a conventional control signal and is smaller in size than a conventional control signal. In one example, the conventional control signal may be conventional downlink control information (DCI), and the structure is as shown in FIG. 2. Specifically, the conventional DCI includes the following 11 fields: a carrier indicator 201, a resource allocation header 202, a resource block allocation (RBA) 203, and a transmission power on a Physical Uplink Control Channel (PUCCH). Transmit Power Control (TPC) command 204, downlink allocation index 205, hybrid automatic repeat request (HARQ) process number 206, antenna port 207, transport block 1 208, transport block 2 209, physical A downlink shared channel (PDSCH) RE mapping and quasi co-location indicator 210, HARQ-ACK resource compensation 211. In one implementation, the conventional DCI is 52 bits in length. The carrier indicator 201, the resource allocation header 202, the downlink allocation index 205, one of the bits of the HARQ process number 206, the transport block 2 209, and the HARQ-ACK resource compensation 211 are optional bits, in FIG. Displayed as a slash fill. It should be noted that the conventional DCI is a piece of information consisting of various fields in FIG. 2, and the horizontal axis shows the order of the respective fields in the conventional DCI, each field including a prescribed number of bits, for example, three carriers indicator 201 Bit. In the case where the control channel unit and the data channel unit are separated, the conventional DCI needs to carry information for locating and decoding the data signal, resulting in a larger size of the conventional DCI, wherein the resource block allocation field 203 occupies a large number of bits. It should be noted that the compressed DCI does not need to set the resource block allocation field 203, nor does it need to set the antenna port field 207, so its size is small.

In one example, the compressed control signal is generated for the first data signal when the data size of the first data signal does not exceed the first length.

At step 102, an integrated channel unit is constructed for the first data signal and the compression control signal.

In one example, the first length may be the shortest packet length specified in the TCP/IP protocol (eg, 64 bytes, ie, 512 bits). When the first data signal is less than or equal to 64 bytes, a compression control signal is generated for the transmission, and the integrated channel unit is used for transmission. In one example, if the compression control signal and the first data signal can be transmitted in the first 7 symbols of a subband, the integrated channel unit transmission is employed. In one example, the integrated channel unit transmission may be employed for the case where the compressed control signal and the first data signal can be transmitted in the first 2 or 3 symbols of a subband.

In one example, the first length may be a compressed IP protocol packet, such as a 20 byte long compressed IP protocol packet. When the first data signal is less than or equal to 20 bytes, a compression control signal is generated for the first data signal, and the integrated channel unit is used for transmission.

In step 103, the integrated channel unit is multiplexed with the channel unit carrying other signals on the communication resource, and the signal of the integrated channel unit is transmitted by using the allocated communication resource. In one example, the communication resource is a time resource, or a frequency resource, or a spatial division multiplexing layer, or any combination of the foregoing communication resources.

In one example, generating the compression control signal for the first data signal in step 101 includes setting an indicator of the data signal length in the compression control signal for indicating the length of the first data signal.

In one example, the generating the compression control signal for the first data signal in the step 101 further includes: setting modulation coding strategy (MCS) information in the compression control signal, to indicate the MCS mode adopted by the first user; The MCS information is selected from a complete MCS table or a simplified MCS table.

In one example, the communication system is provided with multiple levels of MCS mode, using a total of 5 bits to indicate the MCS level described above. In one example, the modulation coding scheme included in the complete MCS table has 26 levels, and the low to high corresponds to different modulation orders and channel coding rate, thereby corresponding to different spectral efficiencies. For example, the low MCS level uses the QPSK modulation method and uses a lower channel coding rate; the medium MCS level uses a 16-QAM modulation method and uses a medium channel coding rate; the high MCS level uses a 64-QAM modulation method, and A higher channel coding rate is used. In order to control the length of the compressed DCI, in addition to using 5 bits to indicate the complete 26-level modulation coding mode, a subset of the 26 levels can be selected to form a simplified MCS table. In one example, in the case of high reliability, 3 bits may be used to indicate the lowest 8 levels of MCS information in the complete MCS table, that is, to simplify the MCS information including the lowest 8 levels in the MCS table. In one example, if both reliability and capacity are taken into account, one MCS mode can be selected from each of the 26 levels, such as selecting levels 1, 5, 9, 13, 17, 21, 25, plus the highest level 26, forming a Simplify the MCS table.

In one example, generating the compression control signal for the first data signal in step 101 further includes setting a compression downlink control information (DCI) indicator in the compression control signal for indicating a type of the control signal.

In one example, the compression control signal described in FIG. 1 may be a compressed DCI, the format of which is shown in Table 1 or Table 2.

Table 1

It is noted that in one example, the compressed DCI can include signal length and MCS information. In one example, the signal length is based on the occupied Control Channel Element (CCE). The CCE is a set of time and frequency resources. The size of the time-frequency resource can be defined by the definition of TS36.213. Other definitions can be used to specify how many symbols the CCE can occupy in the time domain and can be occupied in the frequency domain. How many subcarriers. In one example, the signal length is based on the number of bytes of the data signal, such as 16 bytes or 32 bytes. In one example, the compressed DCI further includes: HARQ compensation. In In one example, the compressed DCI further includes a new data indicator for indicating whether the transmitted data signal is new data or retransmitted data. It should be noted that the redundancy version and the number of HARQ processes in Table 1 are all optional fields in the compressed DCI. In one example, the basic domain included in the compressed DCI is shown in Table 2, that is, the domain that must be included in constructing the compressed DCI.

Table 2

In one example, configuring the integrated channel unit for the first data signal and the compression control signal in step 102 includes: setting the compression control signal to a first segment of the integrated channel unit; generating a a check field for verifying the correctness of the compression control signal, and setting the first check field after the compression control signal; setting the first data signal to be in the The integrated channel unit is located after the first check domain. In one example, the first check domain occupies 8 bits. In one example, a 4 bit first check field can also be set. In one example, the first check domain employs a user ID (eg, RNTI) for scrambling operations, enabling the user to distinguish between DCIs that are sent to themselves.

In one example, a 4-bit unscrambled check field is generated using a checksum method. Specifically, all the bits of the compression control signal are divided into a plurality of 4-bit groups, and if the last bit group is less than 4 bits, the bits are padded with 0, and then the bits corresponding to the positions of the respective bit groups are followed. The modulo 2 addition criteria are added to obtain a 4-bit unscrambled check domain. In an example, an un-scrambled check field may also be generated by using an 8-bit CRC check method. For specific implementation, refer to the description in TS36.212.

Taking the compressed DCI in Table 1 as an example, the 16-bit DCI information can be divided into four 4-bit groups, denoted as b _n,k (n=0, . . . , 3, k=0, . . . , 3). Where n is the sequence number of the 4-bit group, and k is the sequence number of each bit included in a certain 4-bit group. Accordingly, the checksum c _k (k = 0, ..., 3) can be calculated according to the formula (1), where ⊕ denotes the modulo 2 addition.

c _k =b _0,k ⊕b _1,k ⊕b _2,k ⊕b _3,k (1)

In one example, a 4-bit unscrambled check field can be scrambled using a 16-bit user identification (such as RNTI). In this case, 16-bit RNTI may be divided into four groups of 4 bits, then according to equation (2) the respective bit group corresponding bits c _k performs modulo-2 addition, to obtain a first check field. Where p _k (k=0, . . . , 3) are the bits included in the first check domain, and RNTI _n,k (n=0, . . . , 3, k=0, . . . , 3) are 4 of the RNTI. The bits in the 4-bit group, n is the sequence number of the bit group, and k is the sequence number of each bit in the bit group. Similarly, an 8-bit unscrambled check field can be scrambled using a 16-bit RNTI, which is now split into two 8-bit groups.

p _k =c _k ⊕RNTI _0,k ⊕RNTI _1,k ⊕RNTI _2,k ⊕RNTI _3,k (2)

In one example, the compression control signal can be scrambled in conjunction with the unscrambled check domain, where the unscrambled check domain is the first check domain. For example, the 8 bits of the first check field and the last 8 bits of the compressed control signal form a 16-bit unit, and the modulo 2 addition is performed with the corresponding bit of the 16-bit RNTI. Thus, the last 8 bits of the compression control signal and the first check domain are both scrambled by the RNTI.

In one example, constructing the integrated channel unit for the first data signal and the compression control signal in step 102 further includes: generating a second check field for Compressing the control signal, the first check domain and the first data signal for verification, and setting the second check field to be located after the first data signal in the integrated channel unit. In one example, the second check domain is also scrambled with a user ID (eg, RNTI).

In one example, the original check field can be generated using the 24-bit CRC check method described in TS 36.212. In one example, the original check field may also be scrambled using a 16-bit RNTI to generate the second check field. Specifically, the RNTI is subjected to a modulo-2 addition operation with the first 16 bits of the CRC check, and then the last 8 bits of the RNTI are subjected to a modulo-2 addition operation with the last 8 bits of the CRC check. As such, the 24-bit CRC check is all scrambled. It should be noted that, in the foregoing description, the information bits that are not subjected to the scrambling processing corresponding to the first check field are referred to as unscrambled check fields, and the corresponding corresponding to the second check field are not subjected to scrambling processing. The information bits are called the original check field to distinguish them.

FIG. 3 is a schematic structural diagram of an integrated channel unit 300 according to an embodiment of the present invention. In one example, integrated channel unit 300 includes a compressed DCI 301. The integrated channel unit 300 also includes a first check field 302 for verifying the correctness of the compressed DCI 301. In one example, the length of the compressed DCI 301 is P1, and the first check field 302 is used to verify P1 bits. In one example, the first check field 302 can be 4 bits or 8 bits. In an example, the first check domain 302 may use a RNTI Radio Network Temporary Identity (RNTI) as a scrambling code or a mask. As can be seen from FIG. 3, the data signal 303 is transmitted after the DCI 301 is compressed, and the Modulation and Coding Scheme (MCS) employed by the data signal 303 is indicated in the compressed DCI 301. In one example, the user terminal can determine the MCS mode of the data signal 303 based on the indication of the full MCS table and the compressed DCI 301. In one example, the user terminal can determine the number based on the instructions of the simplified MCS table and the compressed DCI 301. According to the MCS mode of signal 303. In one example, the simplified MCS table is a subset of the complete MCS table. In one example, integrated channel unit 300 also includes a second check field 304 for simultaneously verifying compressed DCI and data signals. In one example, the second check field 304 is a Cyclic Redundancy Check (CRC) located at the end of the integrated channel unit 300, and the RNTI may also be employed as a scrambling code or mask. In one example, the length of the second check field 304 in the integrated channel unit 300 is P2, and the second check field is used to check P2 bits. In integrated channel unit 300, compressed DCI 301 and data signal 303 are separately encoded. The compressed DCI 301 and the first check field 302 form a first code block 305, and the data signal 303 and the second check field 304 form a second code block 306. In one example, the coding scheme and modulation scheme of the first code block are preset, and the coding scheme and modulation scheme of the second code block may vary according to the MCS indication. It can be seen that the coding manner of the above two code blocks enables the user terminal to perform blind detection on the control channel. Setting the first check field 302 and/or the second check field 304 in the integrated channel unit 300 provides multiple reliability checks for compressing the DCI 301. In one example, when the data length of the compressed DCI is in CCE units, the number of CCEs it occupies may be determined according to the number of bytes of the compressed DCI and the MCS mode. In an example, the relationship between the number of bytes of the compressed DCI, the MCS mode, and the time-frequency resources occupied by the compressed DCI may be preset according to actual needs.

In one example, the control channel and data channel for the same user or data stream can be integrated through an integrated channel design to assign a data channel with communication resources immediately after its corresponding control channel. The control channel corresponding to the data channel refers to a control channel for the same user or data stream with the data channel. For example, the data channel 1 is used to transmit the data signal of the user A, and the control channel 1 is used to transmit the control signal of the user A, and the data channel 1 corresponds to the control channel 1. Since the corresponding data channel and control channel are next to each other, it is not necessary to indicate the location of the data channel by additional signaling, thereby reducing the control signal. The size of the control signal transmitted on the track. In one example, the control channel is for transmitting compressed DCI. Unlike conventional DCI, the size of compressed DCI is much smaller than conventional DCI. In one example, the compressed DCI does not include a resource block allocation domain, thereby greatly saving signaling overhead.

There are 8 pairs of control channels and data channels in Figure 4(a), and the lengths of data channels 1-8 are the same. There are 4 pairs of control channels and data channels in FIG. 4(b), and the lengths of data channels 1-4 are different. For example, the frequency resources occupied by data channel 4 are much larger than data channel 1. It can be seen that in FIG. 4(a) and FIG. 4(b), after each data channel is followed by its corresponding control channel, each pair of control channels and data channels constitutes an integrated channel unit, and each integrated channel unit It can be constructed as shown in Fig. 3. Multiple integrated channel elements are aggregated together, such as eight in Figure 4(a) and four in Figure 4(b) to transmit signals for more users or data streams. The user terminal performs blind detection on the area where the control channel is located, and then decodes the data channel using information obtained from the control channel. In one example, the data stream refers to a data signal sent to each receiving antenna, and a user terminal provided with a plurality of receiving antennas can receive a plurality of data streams. In an example, an integrated channel unit can also be designed, in which the data channel occupies the entire subband in the frequency domain and occupies multiple symbols in the time domain, for example, the data channel 1 in FIG. 4(c) simultaneously occupies Symbol 1 and symbol 2.

In one example, multiplexing the integrated channel unit with a channel unit carrying other signals on the communication resource as described in step 103 includes: setting a guard interval after the data channel unit in the time domain, and The uplink control channel unit of the first user is set after the guard interval. In one example, multiplexing the integrated channel unit with a channel unit carrying other signals on the communication resource as described in step 103 further includes: setting a second data channel between the integrated channel unit and the guard interval a unit, wherein the second data channel unit is configured to carry a data signal of a second user.

In one example, multiplexing the integrated channel unit with a channel unit carrying other signals on the communication resource as described in step 103 includes: as a control channel unit and the integrated channel The unit allocates different frequency resources in the first time segment, wherein the control channel unit is configured to carry a downlink control signal of the third user; and the third data channel unit that carries the data signal of the third user is set in the After the first time segment; and, the uplink control channel unit of the first user is placed after the guard interval or the third data channel unit. Providing time for decoding of the first user on the integrated channel unit by the guard interval and the third data channel unit. In one example, the first time segment refers to a time segment occupied by the control channel unit and the integrated channel unit.

FIG. 5 is a schematic diagram of multiplexing of an integrated channel unit and other channel units in an embodiment of the present invention. The integrated channel unit 501 is configured to carry the data signal and the downlink control signal of the user 1, and the uplink control channel unit 503 is configured to carry the uplink control signal of the user 1. Since the guard interval 502 is disposed between the integrated channel unit 501 and the uplink control channel unit 503, after receiving the signal from the integrated channel unit 501, the user 1 decodes with the time segment T1 provided by the guard interval 502, thereby enabling the uplink control channel. Unit 503 gives ACK feedback or NACK feedback.

FIG. 6 is a schematic diagram of multiplexing of an integrated channel unit and other channel units according to an embodiment of the present invention. The downlink control channel unit 601 is configured to carry the downlink control signal of the user 2, and the second data channel unit 602 is configured to carry the data signal of the user 2. It can be seen that the transmission of the downlink control signal and the data signal of the user 2 is separated. An integrated channel unit 501 is disposed between the downlink control channel unit 601 and the second data channel unit 602. A guard interval 502 and an uplink control channel unit 503 are respectively disposed after the second data channel unit 602. It can be seen that, compared with FIG. 5, not only the guard interval 502 but also the second data channel unit 602 is provided between the integrated channel unit 501 and the uplink control channel unit 503, so that the time segment T1 that the user 1 can use for decoding is lengthened. .

FIG. 7 is a schematic diagram of multiplexing of an integrated channel unit and other channel units according to an embodiment of the present invention. The integrated channel unit 501 and the downlink control channel unit 701 implement multiplexing in the frequency domain. A third data channel unit 702 and a guard interval 502 are disposed between the integrated channel unit 501 and its corresponding uplink control channel unit 503. In one example, the downlink control channel unit 701 is configured to carry the downlink control signal of the user 3, and the third data channel unit 702 is configured to carry the data signal of the user 3.

FIG. 8 is a schematic diagram of multiplexing of an integrated channel unit and other channel units in an embodiment of the present invention. The integrated channel unit 1 and the downlink control channel unit 1 implement frequency resource multiplexing in the first time segment, and the integrated channel unit 2 and the downlink control channel unit 2 implement frequency resource multiplexing in the second time segment. A downlink control channel unit 2, a data channel unit, and a guard interval are disposed between the integrated channel unit 1 and its corresponding uplink control channel unit 1.

FIG. 9 is a schematic diagram of multiplexing of an integrated channel unit and other channel units according to an embodiment of the present invention. The downlink control channel unit 901 is configured to carry the downlink control signal of the user 4, and the fourth data channel unit 902 is configured to carry the data signal of the user 4. It can be seen that the transmission of the downlink control signal and the data signal of the user 4 is separated. The integrated channel unit 501 and the downlink control channel unit 901 are located in the same time-frequency resource, wherein the downlink control channel unit 901 occupies a first Space Division Multiplexing (SDM) layer, and the integrated channel unit 501 occupies a second SDM layer. Further, the multiple integrated channel units 501 may be located in the same time-frequency resource, where the downlink control channel unit 901 occupies the first SDM layer, the first integrated channel unit occupies the second SDM layer, and the second integrated channel unit occupies the third SDM layer. The first integrated channel unit and the second integrated channel unit are for different UEs. A guard interval 502 and an uplink control channel unit 503 are respectively disposed after the fourth data channel unit 902.

It should be noted that 5G has three types of scenarios: Enhanced Mobile Broadband (eMBB), Massive Machine Type Communications (mMTC), and Ultra-reliable and Low Latency Communications (URLLC). ). Through the deployment of the above scenarios, the entire communication system can realize smart home, intelligent building, smart city, driverless car, industrial self Mobility, augmented reality, telemedicine, etc. In one example, the above scenario has high requirements for processing latency. In general, the uplink delay and downlink delay cannot exceed 1 ms regardless of the usage scenarios and deployment scenarios. URLLC requires higher latency, such as a delay of no more than 0.25ms. For eMBB users, traditional Time Division Multiplexing (TDM) or Frequency Division Multiplexing (FDM) can be used to multiplex low-speed channels such as control channels and data channels. In one example, the multiplexing refers to the process of transmitting signals or data streams of multiple low speed channels over a high speed channel, that is, integrating multiple low speed channels into one high speed channel for transmission. The TDM refers to that the high-speed channel is divided into multiple time slots according to time for a plurality of low-speed channels to be used in turn. FDM refers to distributing the signals of each low-speed channel to each frequency band of the high-speed channel through modulation, and then superimposing to form a signal transmitted on the high-speed channel. For URLLC users, an integrated channel design can be used for signal transmission. Through the design and multiplexing of the integrated channel unit in FIG. 1-9, the solution provided by the embodiment of the present invention can better reduce the overhead of the control signal, and further reduce the processing delay in the communication process.

FIG. 10 is a schematic flowchart diagram of a method 1000 for performing signal decoding by a user terminal according to an embodiment of the present invention. In one example, the method 1000 includes the following operations.

In step 1001, the received signal is decoded according to the start position of the control signal and the signal length to obtain the control signal.

In step 1002, the first check field is extracted to check the control signal to determine whether it is a compression control signal. In one example, the user terminal assumes that the received control signal is a compression control signal, and extracts the first check field according to the format of the compression control signal, which is a blind detection.

In step 1003, after the verification of the first check domain is passed, the first data signal located in the same integrated channel unit with the control signal is decoded according to the signal length carried by the control signal. The first data signal is a data signal of the first user, and the control The signal is a downlink control signal of the first user. It should be noted that in the case that the verification of the first check domain passes, the control signal can be determined to be a compression control signal.

In one example, the method 1000 further includes, in step 1004, extracting a second check field to verify the compressed control signal and the first data signal.

FIG. 11 is a schematic flowchart diagram of a method 1100 for performing signal detection by a user terminal according to an embodiment of the present invention. In one example, the method 1100 includes the following operations.

At step 1101, the starting position of the DCI is located according to the configuration of the search space. In one example, the DCI may be a regular DCI or a compressed DCI. In one example, the search space is a set of time-frequency locations configured by RRC signaling. In one example, DCI is used to indicate resource allocation conditions in data transmission, as well as information related to decoding.

At step 1102, the received signal is demodulated and decoded according to a pre-set DCI length. In one example, the DCI length is L, and the user terminal decodes L bits from the start position in the received signal.

At step 1103, it is determined whether it is a compressed DCI. If yes, go to step 1104, otherwise go to step 1107. In one example, the compressed DCI carries a compressed DCI indicator, as shown in Table 1, the user terminal determines the type of DCI accordingly. It should be noted that since the compressed DCI indicator is optional, step 1103 is also an optional step. In the case that the compressed DCI indicator is not carried in the compressed DCI, the user terminal may determine, by step 1104, whether the type of DCI is a compressed DCI.

At step 1104, the DCI is verified by the first check domain. If the verification passes, it is determined that the DCI is a compressed DCI, and step 1105 is performed. If the verification fails, step 1107 is performed.

At step 1105, the data signal is demodulated and decoded using the MCS information and data signal length carried in the compressed DCI.

At step 1106, the compressed DCI and the decoded data signal are performed through the second check domain. Verification, the process ends.

At step 1107, it is determined whether there is a regular DCI. If yes, step 1108 is performed, otherwise the process ends.

At step 1108, the decoding operation of the regular DCI is performed and the flow ends.

It can be seen that in steps 1101-1102, the user terminal performs blind detection on the DCI. In step 1105, the user terminal decodes the data signal based on the information carried in the DCI.

FIG. 12 is a schematic structural diagram of a base station 1200 according to an embodiment of the present invention. In one example, the base station 1200 includes a construction unit 1201 and a multiplexing unit 1202.

In one example, the construction unit 1201 is configured to generate a compression control signal for the first data signal and construct an integrated channel unit for the first data signal and the compression control signal. The first data signal is a data signal of the first user, and the compression control signal is a downlink control signal of the first user. In an example, the downlink control signal is used to indicate that the corresponding data signal is in the transmission position of the downlink channel, so that the user terminal can receive the data signal at the corresponding location, and the user terminal feeds back the data signal to the base station by using the uplink control signal. Receiving situation.

In one example, the multiplexing unit 1202 is configured to multiplex the integrated channel unit with a channel unit carrying other signals on a communication resource, and transmit the signal of the integrated channel unit by using the allocated communication resource.

In an example, the constructing unit 1201 is configured to set an indicator of a data signal length in the compression control signal, to indicate a length of the first data signal, and set MCS information in the compression control signal, And indicating a MCS mode adopted by the first user; and setting a compression DCI indicator in the compression control signal for indicating a type of the control signal. The MCS information is selected from a complete MCS table or a simplified MCS table.

In one example, the construction unit 1201 is configured to set the compression control signal a first segment of the integrated channel unit; generating a first check field for verifying the correctness of the compression control signal, and setting the first check field after the compression control signal Setting the first data signal to be located after the first check domain in the integrated channel unit.

In an example, the constructing unit 1201 is further configured to generate a second check field, configured to verify the compression control signal, the first check domain, and the first data signal, and The second check field is set to be located after the first data signal in the integrated channel unit.

In an example, the multiplexing unit 1202 is configured to: after the integrated channel unit, set a guard interval in the time domain, and set the uplink control channel unit of the first user after the guard interval; A second data channel unit is disposed between the integrated channel unit and the guard interval. The second data channel unit is configured to carry a data signal of the second user.

In an example, the multiplexing unit 1202 is configured to allocate frequency resources in the first time segment to the control channel unit and the integrated channel unit, wherein the control channel unit is configured to carry the downlink of the third user. a control signal; a third data channel unit carrying the data signal of the third user is disposed after the first time segment; and an uplink control channel unit of the first user is set at a guard interval or the third data After the channel unit. In one example, the guard interval refers to a time segment disposed between the uplink signal and the downlink signal for separating the uplink signal and the downlink signal, during which no useful signal is transmitted.

In one example, the base station 1200 includes a processor and a non-transitory machine-readable storage medium. Program modules are stored in the non-transitory machine readable storage medium for execution by the processor. In one example, the program modules are for performing the operations described in Figures 1-9. In one example, the program module includes the construction unit 1201 and the multiplexing unit 1202.

FIG. 13 is a schematic structural diagram of a user terminal 1300 according to an embodiment of the present invention. In one example, the user terminal 1300 includes a control signal decoding unit 1301, a first check unit 1302, and a data signal decoding unit 1303.

In one example, the control signal decoding unit 1301 is configured to decode the received signal according to a starting position and a signal length of a preset control signal to obtain the control signal.

In an example, the first check unit 1302 is configured to extract the first check field to check the control signal, and send the check result to the data signal decoding unit 1303.

In an example, the data signal decoding unit 1303 is configured to: after the verification of the first check domain passes, the length of the data signal carried according to the control signal is in the same integrated channel unit as the control signal A data signal is decoded. It should be noted that the verification result is that the verification of the first verification domain passes, indicating that the control signal is a compression control signal. The first data signal is a data signal of the first user, and the compression control signal is a downlink control signal of the first user.

In one example, the user terminal 1300 further includes: a second check unit 1304, configured to extract a second check field to verify the compressed control signal and the first data signal.

In one example, the user terminal 1300 includes a processor and a non-transitory machine-readable storage medium. Program modules are stored in the non-transitory machine readable storage medium for execution by the processor. In one example, the program module is operative to perform the operations described in Figures 10-11. In one example, the program module includes: the control signal decoding unit 1301, the first check unit 1302, the data signal decoding unit 1303, and the second check unit 1304.

It should be understood by those skilled in the art that the functions of the user terminals and the processing modules in the base station in the embodiments of the present application can be understood by referring to the related description of the foregoing method embodiments. The user terminal of the example and the processing module in the base station can be implemented by implementing the software of the embodiment of the present application on the user terminal and the base station.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. In actual implementation, there may be another division manner, for example, multiple modules or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or modules, and may be electrical, mechanical or other forms. of.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing storage device includes the following steps: the foregoing storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. A medium that can store program code.

A resource block (RB) is a resource allocation unit of a time domain and a frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. In addition, the RB may include one or more symbols in the time domain, and may also be one slot, one minislot, one subframe, or one TTI. A TTI and a subframe may each be composed of one or more resource blocks. In addition, one or more RBs may also be referred to as a physical resource block (PRB, Physical RB), a sub-carrier group (SCG), a resource element group (REG, a resource element group), a PRG pair, an RB pair, and the like. .

In addition, the resource block may also be composed of one or more resource elements (REs, Resource Elements). For example, one RE can be a subcarrier and a symbol of a radio resource area.

Terms such as "system" and "network" used in this specification are used interchangeably.

In this specification, "base station (BS, Base Station)", "radio base station", "eNB", "gNB", "cell", "sector", "cell group", "carrier", and "component carrier" Such terms are used interchangeably. The base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.

A base station can accommodate one or more (eg, three) cells (also referred to as sectors). When the base station accommodates multiple cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each smaller area can also pass through the base station subsystem (for example, a small indoor base station (RFH, remote head (RRH), Remote Radio Head))) to provide communication services. The term "cell" or "sector" refers to a portion or the entirety of the coverage area of a base station and/or base station subsystem that performs communication services in the coverage.

In the present specification, terms such as "mobile station (MS, Mobile Station)", "user terminal", "user equipment (UE)", and "terminal" are used interchangeably. The base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.

Mobile stations are also sometimes used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless Terminals, remote terminals, handsets, user agents, mobile clients, clients, or several other appropriate terms are used.

In addition, the wireless base station in this specification can also be replaced with a user terminal. For example, each mode/embodiment of the present invention can be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user-to-device (D2D) devices. At this time, the function of the above-described wireless base station 10 can be regarded as having the user terminal 20 The function. In addition, words such as "upstream" and "downstream" can also be replaced with "side". For example, the uplink channel can also be replaced with a side channel.

Similarly, the user terminal in this specification can also be replaced with a wireless base station.

In the present specification, it is assumed that a specific operation performed by a base station is also performed by an upper node depending on the situation. Obviously, in a network composed of one or more network nodes having a base station, various actions for communication with the terminal can pass through the base station and more than one network other than the base station. The node may be considered, for example, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW, etc.), or a combination thereof.

The respective modes/embodiments described in the present specification may be used singly or in combination, and may be switched during use to be used. Further, the processing steps, sequences, flowcharts, and the like of the respective aspects/embodiments described in the present specification can be replaced unless there is no contradiction. For example, with regard to the methods described in the specification, various step units are given in an exemplary order, and are not limited to the specific order given.

The modes/embodiments described in this specification can be applied to use Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-A, LTE-Advanced), and Long-Term Evolution (LTE-B, LTE-Beyond). Super 3rd generation mobile communication system (SUPER 3G), advanced international mobile communication (IMT-Advanced), 4th generation mobile communication system (4G, 4th generation mobile communication system), 5th generation mobile communication system (5G, 5th generation mobile Communication system), future radio access (FRA), new radio access technology (New-RAT, Radio Access Technology), new radio (NR, New Radio), new radio access (NX, New radio access) ), Next Generation Wireless Access (FX), Global System for Mobile Communications (GSM (registered trademark), Global System for Mobile communications), code points Multiple Access 2000 (CDMA2000), Ultra Mobile Broadband (UMB, Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra Wide Band (UWB, Ultra-WideBand), Bluetooth (registered trademark), other suitable systems for wireless communication methods, and/or next-generation systems based on them.

The description "as is" used in the present specification does not mean "based only" unless it is clearly stated in other paragraphs. In other words, the term "according to" means both "based only on" and "at least based on".

Any reference to a unit using the names "first", "second", etc., as used in this specification, does not fully limit the number or order of the units. These names can be used in this specification as a convenient method of distinguishing between two or more units. Thus, reference to a first element and a second element does not mean that only two elements may be employed or that the first element must prevail in the form of the second unit.

The term "determination" used in the present specification sometimes includes various actions. For example, regarding "judgment (determination)", calculation, calculation, processing, deriving, investigating, looking up (eg, table, database, or other) may be performed. Search in the data structure, ascertaining, etc. are considered to be "judgment (determination)". Further, regarding "judgment (determination)", reception (for example, receiving information), transmission (for example, transmission of information), input (input), output (output), and access (for example) may also be performed (for example, Accessing data in memory, etc. is considered to be "judgment (determination)". Further, regarding "judgment (determination)", it is also possible to consider "resolving", "selecting", selecting (choosing), establishing (comparing), comparing (comparing), etc. as "judging (determining)". That is to say, regarding "judgment (determination)", several actions can be regarded as performing "judgment (determination)".

The terms "connected" or "coupled" as used in the specification, or any variant thereof, mean any direct or indirect connection or combination between two or more units, This includes the case where there is one or more intermediate units between two units that are "connected" or "coupled" to each other. The combination or connection between the units may be physical, logical, or a combination of the two. For example, "connection" can also be replaced with "access". When used in this specification, two units may be considered to be electrically connected by using one or more wires, cables, and/or printed, and as a non-limiting and non-exhaustive example by using a radio frequency region. The electromagnetic energy of the wavelength of the region, the microwave region, and/or the light (both visible light and invisible light) is "connected" or "bonded" to each other.

When the terms "including", "comprising", and variations thereof are used in the specification or the claims, these terms are as open as the term "having". Further, the term "or" as used in the specification or the claims is not an exclusive or exclusive.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are made within the spirit and principles of the present invention, should be included in the present invention. Within the scope of protection.

Claims

A signal transmission method, comprising:

Generating a compression control signal for the first data signal and constructing an integrated channel unit for the first data signal and the compression control signal, wherein the integrated channel unit is to convert the first data signal and the compression control The signals are integrated and mapped to a basic unit on the communication resource; the first data signal is a data signal of the first user, the compression control signal is a downlink control signal of the first user, and the compression control signal does not include Resource block allocation field;

The integrated channel unit is multiplexed with a channel unit carrying other signals on a communication resource, and the signal of the integrated channel unit is transmitted by using the allocated communication resource.
The method of claim 1 wherein the compressed control signal does not include an antenna port indication field.
The method according to claim 1, wherein the generating the compression control signal for the first data signal comprises:

An indicator of the length of the data signal is set in the compression control signal for indicating the length of the first data signal.
The method according to claim 3, wherein the generating the compression control signal for the first data signal further comprises: setting modulation coding policy MCS information in the compression control signal, for indicating the first user adopting MCS; wherein the MCS information is selected from a complete MCS table or a simplified MCS table.
The method according to claim 3 or 4, wherein the generating the compression control signal for the first data signal further comprises: setting a compressed downlink control information DCI indicator in the compression control signal, for indicating The type of control signal.
The method according to claim 1, wherein the generating the compression control signal for the first data signal comprises:

The compression control signal is generated for the first data signal when a data size of the first data signal does not exceed a first length.
The method according to claim 1, wherein the constructing the integrated channel unit for the first data signal and the compression control signal comprises:

Setting the compression control signal to the first piece of content of the integrated channel unit;

Generating a first check field for verifying the correctness of the compression control signal, and setting the first check field after the compression control signal;

The first data signal is set to be located after the first check domain in the integrated channel unit.
The method according to claim 7, wherein the constructing the integrated channel unit for the first data signal and the compression control signal further comprises:

Generating a second check field for verifying the compression control signal, the first check field, and the first data signal, and setting the second check field to be in the integrated channel The unit is located after the first data signal.
The method according to claim 1, wherein said multiplexing said integrated channel unit with a channel unit carrying other signals on a communication resource comprises:

In the time domain, a guard interval is set after the integrated channel unit, and the uplink control channel unit of the first user is placed after the guard interval.
The method according to claim 9, wherein the multiplexing the integrated channel unit with a channel unit carrying other signals on a communication resource further comprises:

A second data channel unit is disposed between the integrated channel unit and the guard interval, wherein the second data channel unit is configured to carry a data signal of a second user.
The method according to claim 1, wherein said multiplexing said integrated channel unit with a channel unit carrying other signals on a communication resource comprises:

Allocating different differences in the first time segment for the control channel unit and the integrated channel unit a frequency resource, where the control channel unit is configured to carry a downlink control signal of a third user;

Setting a third data channel unit carrying the data signal of the third user after the first time segment;

The uplink control channel unit of the first user is placed after the guard interval or the third data channel unit.
The method according to claim 1, wherein said multiplexing said integrated channel unit with a channel unit carrying other signals on a communication resource comprises:

Allocating different spatial division multiplexing layers in the first time segment for the control channel unit and the integrated channel unit, wherein the control channel unit is configured to carry a downlink control signal of the fourth user;

Setting a fourth data channel unit carrying the data signal of the fourth user after the first time segment;

The uplink control channel unit of the first user is set after the guard interval or the fourth data channel unit.
A signal decoding method, comprising:

Decoding the received signal according to a starting position of the control signal and a signal length to obtain the control signal;

Extracting the first check field to check the control signal, and after the check of the first check field passes, determining that the control signal is a compression control signal, and according to the length of the signal carried by the compression control signal The control signal is located in a first data signal of the same integrated channel unit for decoding; wherein the integrated channel unit is a basic unit that integrates the first data signal and the compression control signal into a communication resource; The first data signal is a data signal of the first user, the compression control signal is a downlink control signal of the first user, and the compression control signal does not include a resource block allocation field.
The method of claim 13 further comprising: Taking the second check field, the control signal and the first data signal are verified.
A base station, comprising:

a constructing unit, configured to generate a compression control signal for the first data signal, and construct an integrated channel unit for the first data signal and the compression control signal; wherein the integrated channel unit is the first data signal Integrating with the compression control signal to map to a basic unit on a communication resource; the first data signal is a data signal of a first user, and the compression control signal is a downlink control signal of the first user, The compression control signal does not include a resource block allocation field;

And a multiplexing unit, configured to multiplex the integrated channel unit with a channel unit carrying other signals on a communication resource, and transmit the signal of the integrated channel unit by using the allocated communication resource.
The base station according to claim 15, wherein the construction unit is configured to:

Setting an indicator of a length of the data signal in the compression control signal for indicating a length of the first data signal;

And setting, in the compression control signal, modulation coding policy MCS information, used to indicate an MCS adopted by the first user, where the MCS information is selected from a complete MCS table or a simplified MCS table;

A compressed downlink control information DCI indicator is set in the compression control signal for indicating a type of the control signal.
The base station according to claim 15, wherein the construction unit is configured to:

Setting the compression control signal to the first piece of content of the integrated channel unit;

Generating a first check field for verifying the correctness of the compression control signal, and setting the first check field after the compression control signal;

Setting the first data signal to be located in the first in the integrated channel unit After verifying the domain.
The base station according to claim 17, wherein the construction unit is further configured to:

Generating a second check field for verifying the compression control signal, the first check field, and the first data signal, and setting the second check field to be in the integrated channel The unit is located after the first data signal.
The base station according to claim 15, wherein the multiplexing unit is configured to:

Setting a guard interval after the integrated channel unit in the time domain, and setting an uplink control channel unit of the first user after the guard interval;

A second data channel unit is disposed between the integrated channel unit and the guard interval, wherein the second data channel unit is configured to carry a data signal of a second user.
The base station according to claim 15, wherein the multiplexing unit is configured to:

Allocating different frequency resources in the first time segment for the control channel unit and the integrated channel unit, wherein the control channel unit is configured to carry a downlink control signal of the third user;

Setting a third data channel unit carrying the data signal of the third user after the first time segment;

The uplink control channel unit of the first user is placed after the guard interval or the third data channel unit.
A user terminal, comprising:

a control signal decoding unit, configured to decode the received signal according to a starting position and a signal length of the control signal to obtain the control signal;

a first check unit, configured to extract a first check field to verify the control signal, and send the check result to the data signal decoding unit;

The data signal decoding unit is configured to determine, after the verification by the first check field, that the control signal is a compression control signal, and the signal length pair carried according to the compression control signal is located in the same manner as the compression control signal Decoding a first data signal of an integrated channel unit; wherein the integrated channel unit is a basic unit that integrates the first data signal and the compression control signal onto a communication resource; the first data The signal is a data signal of the first user, the compression control signal is a downlink control signal of the first user, and the compression control signal does not include a resource block allocation field.
The user terminal according to claim 21, further comprising: a second checking unit, configured to extract a second check field to verify the compressed control signal and the first data signal.
A non-transitory computer readable storage medium, wherein the storage medium stores machine readable instructions, the machine readable instructions being executable by a processor to:

Generating a compression control signal for the first data signal and constructing an integrated channel unit for the first data signal and the compression control signal, wherein the integrated channel unit is to convert the first data signal and the compression control The signals are integrated and mapped to a basic unit on the communication resource; the first data signal is a data signal of the first user, the compression control signal is a downlink control signal of the first user, and the compression control signal does not include Resource block allocation field;

The integrated channel unit is multiplexed with a channel unit carrying other signals on a communication resource, and the signal of the integrated channel unit is transmitted by using the allocated communication resource.