CN108347322B - Method and device for uplink transmission - Google Patents

Abstract

The application discloses a method and a device for uplink transmission, which are used for enhancing the performance of terminal detection. The method comprises the following steps: the terminal determines the number N of the MARs in the bundled MARs and determines the length of the first pilot signal according to the determined number N, wherein N is an integer greater than 1; the terminal acquires a first pilot signal with the length and places the first pilot signal on the bundled MAR; the terminal transmits the bundled MAR in which the first pilot signal is placed.

Description

A method and apparatus for uplink transmission

technical field

The present application relates to the field of communication technologies, and in particular, to a method and apparatus for uplink transmission.

Background technique

In a traditional wireless cellular network, such as a Long Term Evolution (Long Term Evolution, "LTE" for short) system, a terminal often needs to establish a Radio Resource Control (Radio Resource Control, "RRC") connection with a base station before sending data in the uplink. Enter the radio resource control connection state, and then send a Scheduling Request ("SR") to the base station. If the base station allows the terminal to send data upstream, the base station will send an authorization instruction to the terminal. After the terminal receives the authorization instruction, it can The instruction requires sending uplink data to the base station.

The above-mentioned authorized transmission process realizes uplink data transmission. One disadvantage is that the delay from the terminal determining that there is uplink data that needs to be sent to the terminal sending the data from the air interface is relatively large; When the number of terminals is very large, the resource consumption of uplink and downlink control channels for sending scheduling requests and grants will be very large, which will lead to a high proportion of control overhead in the total network overhead (such as power, air interface resources, etc.), especially when the terminal's This shortcoming of authorized transmission is especially obvious when the services are all small data packet services.

The grant-free transmission scheme can realize data "coming and going". When the terminal determines that there is uplink data to be sent, it does not need to go through the process of sending an uplink scheduling request and waiting for the authorization of the receiving base station, but directly processes the data. and then sent to the base station. Therefore, compared with the authorized transmission scheme scheduled by the base station, the transmission delay can be greatly shortened, and the excessive occupation of network resources by the control overhead can be avoided.

In order to achieve license-free transmission, before license-free transmission, the base station needs to pre-designate available license-free resources for the terminal, such as uplink pilot resources, time-frequency resources, etc., and will need to use blind detection and other means to detect the received data from which terminal. Since the terminal does not need the authorization of the base station to send the uplink data, the terminal detection performance has become the bottleneck of the transmission reliability of the wireless communication system using the license-free transmission. There is no good solution for how to enhance the terminal detection performance.

SUMMARY OF THE INVENTION

The present application provides a method and apparatus for uplink transmission to enhance the performance of terminal detection.

In a first aspect, the present application provides a method for uplink transmission, the method comprising:

The terminal determines the number N of MARs in the bundled multi-access resource MARs, and determines the length of the first pilot signal according to the determined number N, where N is an integer greater than 1; the terminal obtains the first pilot signal with the length. frequency signal, and place the first pilot signal on the bundled MAR; the terminal sends the bundled MAR on which the first pilot signal is placed.

Since the terminal determines the length of the first pilot signal based on the number N of MARs in the bundled MAR, and places the first pilot signal with the length on the bundled MAR, multiple MARs in the bundled MAR can be fully utilized. The provided pilot frequency resource generates longer pilot frequency signal, provides more pilot frequency signal quantity, and expands the optional range of pilot frequency signal, thereby achieving the effect of improving terminal detection performance and enhancing transmission reliability.

In a possible implementation, the terminal places the first pilot signal on the bundled MAR, including:

The terminal determines N second pilot signals according to the first pilot signal, and the length of each of the second pilot signals is less than or equal to the length of the first pilot signal;

The terminal places the N second pilot signals on N MARs in the bundled MARs, respectively.

Since the N second pilot signals are respectively placed on the N MARs in the bundled MARs, the network device will be able to sequentially detect the second pilot signals distributed on the N MARs in the received bundled MARs. , the effect of enhancing the terminal detection performance is achieved through such a progressive detection method.

In a possible implementation, the terminal determines N second pilot signals according to the first pilot signal, including:

The terminal divides the first pilot signal into N second pilot signals according to the sequence characteristic of the first pilot signal; or,

The terminal interleaves the first pilot signal, and divides the interleaved first pilot signal into N second pilot signals according to sequence characteristics of the first pilot signal.

In a possible implementation, the terminal determines the length of the first pilot signal according to the determined number N, including:

The terminal calculates the product of the number N and the length of the pilot signal that can be placed on each MAR, and determines the product as the length of the first pilot signal.

In a possible implementation, the length of the pilot signal that can be placed on each MAR is determined by the terminal according to a predefined pilot placement manner and the size of each MAR.

In a possible implementation, the time-frequency resource positions occupied by the bundled MARs are selected from a pre-configured set of time-frequency resource positions corresponding to the number N of MARs.

In the above manner, after receiving the bundled MAR transmitted by the terminal, the network device will be able to directly determine the bundled MAR used by the terminal transmitting the bundled MAR according to the location of the time-frequency resources occupied by the received bundled MAR. The number of MARs in the MAR, thereby avoiding the need for the network device to perform blind detection of multiple preset MAR bundle sizes, thereby simplifying the detection complexity of the network device.

In a second aspect, the present application provides a method for uplink transmission, the method comprising:

The network device receives the bundled MAR transmitted by the terminal, and a first pilot signal is placed on the bundled MAR; the length of the first pilot signal is after the terminal determines the number N of MARs in the bundled MAR , determined according to the determined quantity N, where N is an integer greater than 1;

The network device detects the terminal according to the first pilot signal placed on the bundled MAR.

Since the network device can detect the terminal according to the first pilot signal placed on the bundled MAR, and the first pilot signal comes from a set of optional pilot signals with a larger range, it can improve the terminal detection performance and enhance the The effect of transmission reliability.

In a possible implementation, N second pilot signals are respectively placed on N MARs in the bundled MARs, and the second pilot signals are determined by the terminal according to the first pilot signals Yes, the length of the second pilot signal is less than or equal to the length of the first pilot signal.

Since the N second pilot signals are respectively placed on the N MARs in the bundled MARs, the network device will be able to sequentially detect the second pilot signals distributed on the N MARs in the received bundled MARs. , the effect of enhancing the terminal detection performance is achieved through such a progressive detection method.

In a possible implementation, the network device detects the terminal according to the first pilot signal placed on the bundled MAR, including:

The network device acquires the second pilot signal placed on each MAR in the bundled MAR, and when acquiring a second pilot signal, combines all the currently acquired second pilot signals, and detects the second pilot signal. the terminal.

In a possible implementation, the network device acquires the second pilot signal placed on each MAR in the bundled MARs, including:

If the network device determines the starting position of the time-frequency resources occupied by the bundled MARs, the network device sequentially acquires the second pilot placed on each MAR in the bundled MARs from the starting position signal; otherwise,

The network device attempts to acquire the second pilot signal placed on each MAR in the bundled MARs at all possible positions of the time-frequency resources occupied by the bundled MARs one by one.

In a possible implementation, the N second pilot signals are obtained by dividing the first pilot signals into N by the terminal according to the sequence characteristics of the first pilot signals; or,

The N second pilot signals are for the terminal to interleave the first pilot signals, and according to the sequence characteristics of the first pilot signals, the divided and interleaved first pilot signals are N obtained.

In a possible implementation, the length of the first pilot signal is a product obtained by the terminal multiplying the determined number N by the length of the pilot signal that can be placed on each MAR.

In a possible implementation, the length of the pilot signal that can be placed on each MAR is determined by the terminal according to a predefined pilot placement manner and the size of each MAR.

In a possible implementation, after the network device receives the bundled MAR transmitted by the terminal, the method further includes: the network device determines, according to the frequency resource location occupied by the received bundled MAR, a MAR in the bundled MAR the number N.

In the above manner, after receiving the bundled MAR transmitted by the terminal, the network device will be able to directly determine the bundled MAR used by the terminal transmitting the bundled MAR according to the location of the time-frequency resources occupied by the received bundled MAR. The number of MARs in the MAR, thereby avoiding the need for the network device to perform blind detection of multiple preset MAR bundle sizes, thereby simplifying the detection complexity of the network device.

In a third aspect, the present application provides an apparatus for uplink transmission, the apparatus is a terminal, and the apparatus includes:

a determining module, configured to determine the number N of MARs in the bundled MARs, and determine the length of the first pilot signal according to the determined number N, where N is an integer greater than 1;

a placing module, configured to obtain a first pilot signal with the length, and place the first pilot signal on the bundled MAR;

A sending module, configured to send the bundled MAR on which the first pilot signal is placed.

In a possible implementation, the placement module is specifically used for:

Determine N second pilot signals according to the first pilot signals, and the length of each second pilot signal is less than or equal to the length of the first pilot signal;

The N second pilot signals are respectively placed on N MARs in the bundled MARs.

In a possible implementation, the placement module is specifically used for:

According to the sequence characteristics of the first pilot signal, the first pilot signal is divided into N second pilot signals; According to the sequence characteristic of the frequency signal, the interleaved first pilot signal is divided into N second pilot signals.

In a possible implementation, the determining module is specifically used for:

The product of the number N and the length of the pilot signal that can be placed on each MAR is calculated, and the product is determined as the length of the first pilot signal.

In a possible implementation, the length of the pilot signal that can be placed on each MAR is determined by the determining module according to a predefined pilot placement manner and the size of each MAR.

In a possible implementation, the time-frequency resource positions occupied by the bundled MARs are selected from a pre-configured set of time-frequency resource positions corresponding to the number N of MARs.

The implementation and beneficial effects of the device achieved by any one of the third aspect or the third aspect of the present invention and the implementation and beneficial effects of the method achieved by any one of the first aspect or the first aspect of the present invention can be mutually See, the repetition will not be repeated.

In a fourth aspect, the present application provides an apparatus for uplink transmission, the apparatus is network equipment, and the apparatus includes:

A receiving module, configured to receive the bundled MAR transmitted by the terminal, where a first pilot signal is placed on the bundled MAR; the length of the first pilot signal is the length of the MAR in the bundled MAR determined by the terminal After the number N, it is determined according to the determined number N, where N is an integer greater than 1;

A detection module, configured to detect the terminal according to the first pilot signal placed on the bundled MAR.

In a possible implementation, N second pilot signals are respectively placed on N MARs in the bundled MARs, and the second pilot signals are determined by the terminal according to the first pilot signals Yes, the length of the second pilot signal is less than or equal to the length of the first pilot signal.

In a possible implementation, the detection module is specifically used for:

Acquire the second pilot signal placed on each MAR in the bundled MARs, and detect the terminal after combining all the currently acquired second pilot signals each time a second pilot signal is acquired.

In a possible implementation, the detection module is specifically used for:

If the starting position of the time-frequency resources occupied by the bundled MARs is determined, then sequentially acquire the second pilot signal placed on each MAR in the bundled MARs from the starting position; otherwise,

Attempting to acquire the second pilot signal placed on each MAR in the bundled MARs at all possible positions of the time-frequency resources occupied by the bundled MARs one by one.

In a possible implementation, the N second pilot signals are obtained by dividing the first pilot signals into N by the terminal according to the sequence characteristics of the first pilot signals; or,

The N second pilot signals are for the terminal to interleave the first pilot signals, and according to the sequence characteristics of the first pilot signals, the divided and interleaved first pilot signals are N obtained.

In a possible implementation, the length of the first pilot signal is a product obtained by the terminal multiplying the determined number N by the length of the pilot signal that can be placed on each MAR.

In a possible implementation, the length of the pilot signal that can be placed on each MAR is determined by the terminal according to a predefined pilot placement manner and the size of each MAR.

In a possible implementation, the detection module is specifically used for:

After the receiving module receives the bundled MARs transmitted by the terminal, the number N of MARs in the bundled MARs is determined according to the frequency resource positions occupied by the received bundled MARs.

The implementation and beneficial effects of the device achieved by any one of the above-mentioned fourth aspect or the fourth aspect of the present invention may be mutually compatible with the implementation and beneficial effects of any one of the above-mentioned second or second aspects of the present invention. See, the repetition will not be repeated.

In a fifth aspect, the present application provides a transmission system, the system includes: a terminal and a network device; wherein, the terminal is configured to execute the above-mentioned first aspect or any one of the first aspects of the present invention to implement the method; the network The device is configured to execute the above-mentioned second aspect or any one of the second aspects of the present invention to implement the method.

In a sixth aspect, the present application provides a terminal, the terminal includes: a communication interface, a memory, and a processor, where the memory is used to store program codes to be executed by the processor. The communication interface is used to transmit the bundled MAR. The processor is configured to execute the program code stored in the memory, and is specifically configured to execute the method described in the first aspect or any one of the first aspects of the present invention.

In a seventh aspect, the present application provides a network device, the network device includes: a communication interface, a memory, and a processor, where the memory is used to store program codes that the processor needs to execute. The communication interface is used to receive the bundled MAR. The processor is configured to execute the program code stored in the memory, and is specifically configured to execute the method described in the second aspect or any one of the second aspect of the present invention.

In an eighth aspect, the present application further provides a readable storage medium for storing software instructions for executing the functions implemented by any one of the above-mentioned first aspect and the first aspect of the present invention, which contains software instructions for executing the present invention A program designed by the method implemented by any one of the first aspect and the first aspect.

In a ninth aspect, the present application also provides a readable storage medium for storing software instructions for executing the functions implemented by any one of the above-mentioned second aspect and the second aspect of the present invention, which contains software instructions for executing the present invention A program designed by a method implemented by any one of the second aspect and the second aspect.

Description of drawings

1 is a schematic diagram of the architecture of a wireless communication system;

FIG. 2 is a flowchart of a method for uplink transmission provided by some embodiments of the present invention;

3 is a schematic diagram of a terminal determining a first pilot signal and placing the first pilot signal on a bundled MAR in some embodiments of the present invention;

4(a) is a schematic diagram of the length of the pilot signal that can be placed on each MAR in some embodiments of the present invention;

4(b) is a schematic diagram of the length of the pilot signal that can be placed on each MAR in some embodiments of the present invention;

4(c) is a schematic diagram of the length of the pilot signal that can be placed on each MAR in some embodiments of the present invention;

FIG. 4(d) is a schematic diagram of the length of the pilot signal that can be placed on each MAR in some embodiments of the present invention;

4(e) is a schematic diagram of the length of the pilot signal that can be placed on each MAR in some embodiments of the present invention;

4(f) is a schematic diagram of the length of the pilot signal that can be placed on each MAR in some embodiments of the present invention;

5(a) is a schematic diagram of the terminal determining the length of the total pilot signal in some embodiments of the present invention;

FIG. 5(b) is a schematic diagram of a terminal determining the length of a total pilot signal in some embodiments of the present invention;

FIG. 5(c) is a schematic diagram of the terminal determining the length of the total pilot signal in some embodiments of the present invention;

6(a) is a schematic diagram of a terminal determining N second pilot signals in some embodiments of the present invention;

FIG. 6(b) is a schematic diagram of a terminal determining N second pilot signals in some embodiments of the present invention;

7 is a schematic diagram of time-frequency resources occupied by N bundled MARs in some embodiments of the present invention;

8(a) is a schematic diagram of a terminal placing transmission content in time-frequency resources in some embodiments of the present invention;

FIG. 8(b) is a schematic diagram of a terminal placing transmission content in time-frequency resources in some embodiments of the present invention;

8(c) is a schematic diagram of a terminal placing transmission content in time-frequency resources in some embodiments of the present invention;

FIG. 8(d) is a schematic diagram of a terminal placing transmission content in time-frequency resources in some embodiments of the present invention;

8(e) is a schematic diagram of a terminal placing transmission content in time-frequency resources in some embodiments of the present invention;

FIG. 8(f) is a schematic diagram of a terminal placing transmission content in time-frequency resources in some embodiments of the present invention;

FIG. 9 is a schematic diagram of a flow of a method for uplink transmission provided by further embodiments of the present invention;

10 is a schematic diagram of a situation in which a network device detects a terminal in some embodiments of the present invention;

11 is a schematic structural diagram of an apparatus for uplink transmission provided by some embodiments of the present invention;

12 is a schematic structural diagram of an apparatus for uplink transmission provided by some embodiments of the present invention;

13 is a schematic structural diagram of a terminal provided by some embodiments of the present invention;

FIG. 14 is a schematic structural diagram of a network device provided by some embodiments of the present invention.

Detailed ways

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a schematic diagram of the architecture of a wireless communication system according to some embodiments of the present invention. As shown in FIG. 1 , the wireless communication system example includes a network device 101 and at least one terminal 102 . The terminal 102 can communicate with the network device 101 through a wireless link.

The network device 101 can manage uplink (UpLink, “UL” for short) transmission and downlink (DownLink, “DL” for short) transmission of the terminal 102 that communicates with the network device 101 . Among them, the uplink transmission refers to the communication from the terminal 102 to the network device 101 .

If a license-free transmission scheme is applied in the wireless communication system as shown in FIG. 1, the terminal 101 can access uplink resources without a request/grant mechanism. Since there is a mapping relationship between the pilot signal and the terminal, the network device can determine which terminal the received uplink data comes from by detecting the pilot signal. In the current pilot signal design, the pilot signal only depends on the placement of the pilot signal on the time-frequency resources, thus limiting the optional range of the pilot signal, resulting in limited detection performance of the terminal by the network equipment, which in turn affects the use of Transmission reliability of wireless communication systems for license-free transmission.

The traditional technologies used to enhance the transmission reliability of wireless communication systems include:

Hybrid Automatic Repeat Request (HARQ) technology, by generating multiple redundancy versions (Redundancy Version, RV) of Transport Block (Transport Block, TB), and sending the first one on a certain time-frequency resource block RVs, whether subsequent RVs are sent depends on the confirmation (Acknowledgement, ACK)/Negative Acknowledgement (NACK) of the previous transmission, and link reliability is guaranteed through retransmission and combination;

Subframe bundling (Transmission Time Interval Bundling, TTI Bundling) technology, in this technology, different RVs corresponding to the same TB can be sent in consecutive subframes without waiting for ACK/NACK. After receiving and processing, the network device will send a joint ACK/NACK, that is, the network device receives multiple transmissions of the same TB (different RVs) in consecutive subframes, and after soft combining, uses an ACK/NACK. NACK makes a unified response and uses time diversity to increase transmission reliability.

Although the above-mentioned technology for enhancing the transmission reliability of the wireless communication system can enhance the reliability of data transmission in the wireless communication system to a certain extent, it cannot enhance the detection performance of the terminal by the network device. Considering that the terminal detection capability of the network equipment is related to the pilot signal, and considering the characteristics of the above-mentioned technology for enhancing the transmission reliability of the wireless communication system, the embodiment of the present invention provides a method for uplink transmission and a device, using the pilot resource on the bundled multiple access resources (Multiple Access Resource, MAR) on the terminal side, by placing a jointly designed pilot signal on the bundled MAR, and on the network device side on the bundled MAR The placed pilot signals are jointly detected to achieve the purpose of enhancing the performance of terminal detection and improving transmission reliability.

Various embodiments are described herein in conjunction with terminals. A terminal may also refer to user equipment (User Equipment, "UE" for short), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless communication equipment, User Agent or User Device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol ("SIP" for short) phone, a Wireless Local Loop ("WLL" for short) station, a Personal Digital Assistant ("Personal Digital Assistant" for short) "PDA"), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in future 5G networks or future evolved Public Land Mobile Networks (Public Land Mobile Networks) , referred to as "PLMN") terminals in the network, etc.

Various embodiments are described herein in conjunction with network devices. The network device may be a device used to communicate with a terminal, for example, a base station (Base Transceiver Station, referred to as "BTS") in a GSM system or CDMA, or a base station (NodeB, referred to as "NB" in a WCDMA system) ), it can also be an evolved base station (Evolutional Node B, referred to as "eNB" or "eNodeB") in the LTE system, or it can be a terminal that functions as a network device in D2D (Device to Device, device-to-device) communication, or The network device can be a relay station, an access point, a vehicle-mounted device, a transmission point, a wearable device, and a network-side device in a future 5G network or a network device in a future evolved PLMN network, or any device that undertakes network functions.

The multiple access resource (Multiple Access Resource, "MAR" for short) involved in this application consists of a multiple access physical resource (MA Physical Resource, "MAPR" for short) and a multiple access signature (MA Signature, "MAS" for short) )constitute. Wherein, MAPR is Time Frequency Resource; MAS includes at least one of the following but not limited to: Codebook/Codeword, Sequence, Interleaver and/or Mapping Pattern mapping pattern), demodulation reference signal (Demodulation reference signal), preamble (Preamble), spatial domain (Spatial-dimension), power domain (Power-dimension).

In a wireless communication system using license-free transmission, when the number of terminals is large, different terminals can use the same MAPR and use different MAS for transmission; when the number of terminals further increases, different terminals can use the same MAS on the same MAPR to transmit. to transmit.

In addition, the multiple mentioned in this application means two or more. Terms such as "first" and "second" described in this application are only used to distinguish descriptions, and are not used to indicate or imply relative importance, nor are they used to indicate or imply sequence.

In the scheme for uplink transmission provided by the embodiment of the present invention, the terminal may determine the length of the first pilot signal according to the number N of MARs in the bundled multiple access resources (Multiple Access Resource, MAR). After acquiring the first pilot signal with the length, the bundled MAR on which the first pilot signal is placed is sent; further, the network device can receive the bundled MAR transmitted by the terminal, according to the first pilot signal placed on the bundled MAR. frequency signal to detect the terminal transmitting the bundled MAR. Since the length of the pilot signal generated by the terminal depends on the number of MARs in the bundled MARs, the terminal can place a joint design on the resources of the bundled MARs through the scheme for uplink transmission provided by the embodiments of the present invention The pilot signal on the bundled MAR is jointly detected on the network device side, thereby enhancing the user detection performance and improving the system transmission reliability.

FIG. 2 shows a flowchart of a method for uplink transmission provided by some embodiments of the present invention. The process shown in FIG. 2 can be implemented by the terminal. For example, as shown in FIG. 1 , the terminal 102 may be configured with functional modules for executing the process shown in FIG. 2 , and the functional modules for executing the process may be implemented by hardware, software programming, or a combination of software and hardware.

As shown in Figure 2, the process includes the following steps:

Step 201: the terminal determines the number N of MARs in the bundled MARs, and determines the length of the first pilot signal according to the determined number N, where N is an integer greater than 1;

Step 202: the terminal acquires the first pilot signal with the length, and places the first pilot signal on the bundled MAR;

Step 203: The terminal sends the bundled MAR in which the first pilot signal is placed.

Since the terminal determines the length of the first pilot signal based on the number N of MARs in the bundled MAR, and places the first pilot signal with the length on the bundled MAR, multiple MARs in the bundled MAR can be fully utilized. The provided pilot resources can, on the one hand, generate longer pilot signals, provide more pilot signals, and expand the optional range of pilot signals. On the other hand, by placing the first pilot on the bundled MAR The signal enables the network device to gradually detect the terminal according to the first pilot signal placed on the bundled MAR, thereby improving the terminal detection performance and enhancing the transmission reliability through these two aspects.

Specifically, for step 201, in some embodiments of the present invention, after determining the number N of MARs in the bundled MARs, the terminal may calculate the number N of MARs in the determined bundled MARs and the number N of MARs that can be used on each MAR. The product of the lengths of the pilot signals is placed so that the calculated product is determined as the length of the first pilot signal.

The number N of MARs in the bundled MARs may be defined by a standard or may be preconfigured.

For step 202, in some embodiments of the present invention, when placing the first pilot signal on the bundled MAR, the terminal may first determine N second pilot signals according to the first pilot signal, and then place the first pilot signal on the bundled MAR. The N second pilot signals are respectively placed on N MARs in the bundled MARs. The length of each of the N second pilot signals is less than or equal to the length of the first pilot signal.

Since the N second pilot signals are respectively placed on the N MARs in the bundled MARs, the network device will be able to sequentially detect the second pilot signals distributed on the N MARs in the received bundled MARs. , the effect of enhancing the terminal detection performance is achieved through such a progressive detection method.

For example, FIG. 3 shows an example in which the terminal determines the first pilot signal and places the first pilot signal on the bundled MAR in some embodiments of the present invention:

As shown in Figure 3, the size of the MAR can be expressed as N _RB consecutive RBs in the frequency domain, each RB occupies N _sub subcarriers and N _sym OFDM symbols, with a total of N _sub ×N _sym REs, of which the first The N _sub REs in the column are used to place the pilot signal, therefore, the length of the pilot signal that can be placed on each MAR can be expressed as N _sub ;

It is assumed that UE1 does not use the bundled MAR for transmission, so the length of the first pilot signal (P ₁ ) determined by UE1 is N _sub ;

UE2 uses bundled MARs for transmission, and the number of MARs in the bundled MARs used is 2, so the length of the first pilot signal (P ₂ ) determined by UE2 is 2N _sub ;

UE3 uses bundled MARs for transmission, and the number of MARs in the bundled MARs used is 4, so the length of the first pilot signal (P ₃ ) determined by UE2 is 4N _sub .

Furthermore, as shown in FIG. 3 , when each terminal places the first pilot signal determined by each terminal on the bundled MAR used by each terminal:

UE1 can directly place the first pilot signal (P ₁ ) with a length of N _sub on the MAR;

UE2 may sequentially divide the first pilot signal (P ₂ ) into two sections with a length of N _sub (equivalent to two second pilot signals), and place them on two MARs in the bundled MARs respectively;

The UE3 may sequentially divide the first pilot signal (P ₃ ) into four segments with a length of N _sub (equivalent to four second pilot signals), and then place them on four MARs in the bundled MARs respectively.

In the example shown in FIG. 3 , because the terminal uses the number N of MARs in the bundled MARs to determine the length of the first pilot signal, and divides the first pilot signal into N second pilot signals in turn, which are respectively placed in On each MAR in the bundled MAR, the length of the second pilot signal is equivalent to the length of the pilot signal that can be placed on each MAR.

In some embodiments of the present invention, the length of the pilot signal that can be placed on each MAR may be specifically determined by the terminal according to a predefined pilot placement manner and the size of each MAR.

The pre-defined pilot placement manner may be defined by a wireless standard or configured by a network device to the terminal.

Specifically, the pre-defined pilot placement manner may be used to define the placement manner of the pilot signals on each MAR, specifically, the manner in which the pilot symbols occupy REs may be defined. According to a predefined pilot placement manner and the size of each MAR, the length of pilot signals that can be placed on each MAR can be expressed as the number of REs occupied by pilot symbols on each MAR.

For example, FIG. 4(a), FIG. 4(b), FIG. 4(c), FIG. 4(d), FIG. 4(e), and FIG. 4(f) respectively illustrate each of the A schematic diagram of the length of the pilot signal that can be placed on each MAR. Among them, it is assumed that the size of each MAR is the same as the MAR described in Figure 3, that is, a MAR has a total of N _sub ×N _sym REs, and to simplify the description, it is assumed that N _sub is an even number:

As shown in Fig. 4(a), the placement of pilot signals on the MAR is defined as occupying the entire MAR bandwidth and one symbol time, so in the example shown in Fig. 4(a), each MAR can The length of placing the pilot signal is N _sub ; this example situation is the example situation of placing the pilot signal on the MAR shown in Figure 3;

As shown in Fig. 4(b), the placement of the pilot signal on the MAR is defined as the time that occupies the entire MAR bandwidth and one symbol with an interval of one subcarrier, so in the example shown in Fig. 4(b) , the length of the pilot signal that can be placed on each MAR is N _sub /2;

As shown in Fig. 4(c), the placement of the pilot signal on the MAR is defined as occupying the entire MAR bandwidth and the time of two symbols, so in the example shown in Fig. 4(c), each MAR is The length of the pilot signal that can be placed is 2N _sub ;

As shown in Figure 4(d), the placement of the pilot signal on the MAR is defined as occupying the entire MAR bandwidth and two symbols at an interval of one subcarrier, and the positions on the subcarriers are aligned, so in the In the example shown in FIG. 4(d), the length of the pilot signal that can be placed on each MAR is N _sub ;

As shown in Figure 4(e), the placement of pilot signals on the MAR is defined as occupying the entire MAR bandwidth and two symbols at an interval of one subcarrier, and the positions on the subcarriers are staggered. In the example shown in FIG. 4(e), the length of the pilot signal that can be placed on each MAR is N _sub ;

As shown in Figure 4(f), the placement of the pilot signal on the MAR is defined as occupying the entire MAR bandwidth and two symbol times, but the same is used in the two symbol times, as shown in In the example shown in FIG. 4( f ), the length of the pilot signal that can be placed on each MAR is N _sub .

It can be seen that after the placement mode of the pilot signals on each MAR is determined, the length of the pilot signals that can be placed on each MAR is determined accordingly. After determining the length of the pilot signal that can be placed on each MAR, the terminal can determine the length of the first pilot signal by using the number of MARs in the bundled MARs as described in the foregoing embodiment.

For the convenience of description, the first pilot signal is also referred to as a general pilot signal in this application.

Considering that the retransmission of the bundled MARs through the HARQ technology can further increase the transmission reliability, in some embodiments of the present invention, combined with the HARQ technology, the terminal can specifically base on the number of MARs in the bundled MARs and the number of retransmissions to determine the length of the total pilot signal. The number of MARs in the bundled MARs and the number of retransmissions may be defined by a standard or preconfigured.

For example, FIG. 5( a ), FIG. 5( b ), and FIG. 5( c ) respectively show schematic diagrams in which the terminal determines the length of the total pilot signal in some embodiments of the present invention.

As shown in Fig. 5(a), each MAR in the MAR bundle uses a different pilot signal, and the same MAR bundle size and the same pilot signal are used for initial transmission and retransmission. In this example situation, the length of the total pilot signal is the product of the length of the pilot signal placed on each MAR, L _MAR , and the number N of MARs in the bundled MAR.

As shown in Fig. 5(b), each MAR in the MAR bundle uses a different pilot signal, and the same MAR bundle size and different pilot signals are used for initial transmission and retransmission. In this example situation, the length of the total pilot signal is the product of the length of the pilot signal placed on each MAR, L _MAR , the number N of MARs in the bundled MAR, and the number of retransmissions N _HARQ .

As shown in Fig. 5(c), each MAR in the MAR bundle uses a different pilot signal, and uses different MAR bundle sizes and different pilot signals during initial transmission and retransmission. In this example situation, the length of the total pilot signal is the product of the length L _MAR of the pilot signal placed on each MAR and the sum ΣN _i of the number of MARs in the bundled MARs in each transmission.

Specifically, in some embodiments of the present invention, after determining the length of the first pilot signal, the terminal may perform the step 202 to obtain the first pilot signal with the length. The acquired first pilot signal may be specifically generated based on a ZC (Zadoff-Chu) sequence, an RM (Reed Muller) sequence, a Gold sequence, and the like.

Further, in some embodiments of the present invention, the terminal may, according to the acquired first pilot signal, determine N second pilot signals by, but not limited to, the following methods:

According to the sequence characteristics of the first pilot signal, the first pilot signal is divided into N second pilot signals; or,

The first pilot signal is interleaved, and according to the sequence characteristics of the first pilot signal, the interleaved first pilot signal is divided into N second pilot signals.

Since the terminal obtains N second pilot signals by dividing according to the sequence characteristics of the first pilot signal, the N second pilot signals placed on the bundled N MARs also have sequence characteristics, so that the network device can base on the N second pilot signals. Sequence feature for progressive terminal detection.

For example, based on the example situation shown in Figure 5(a) above, the length of the total pilot signal is the product of the length L _MAR of the pilot signal placed on each MAR and the number N of MARs in the bundled MAR, FIG. 6(a) and FIG. 6(b) respectively show schematic diagrams in which the terminal determines N second pilot signals in some embodiments of the present invention. Among them, in the examples shown in Figure 6(a) and Figure 6(b), the same pilot signal is placed on the bundled MAR of the initial transmission and the retransmission:

As shown in Fig. 6(a), the terminal can sequentially divide the acquired total pilot signal into N pilot groups with a length of L _MAR (equivalent to dividing the first pilot signal into N second pilot groups) frequency signal), and then the N pilot frequency groups can be sequentially placed on each MAR in the bundled MAR;

As shown in Fig. 6(b), the terminal can divide the obtained total pilot signal into N pilot groups with a length of L _MAR in order after interleaving the obtained total pilot signal (equivalent to The interleaved first pilot signal is divided into N second pilot signals), and then the N pilot groups can be sequentially placed on each MAR in the bundled MARs.

Specifically, the total pilot signal may be generated based on a ZC (Zadoff-Chu) sequence, an RM (Reed Muller) sequence, a Gold sequence, and the like. The RM sequence generated based on the Delsarte-Goethals set has a nesting feature. Therefore, by jointly utilizing the bundled MAR and the pilot resource during retransmission, the short pilot is combined to generate the long pilot. The long pilot also conforms to the definition of the RM sequence. Enables progressive detection of network devices.

The process of obtaining the total pilot signal by the terminal in some embodiments of the present invention is described below by taking the generation of the total pilot signal based on the RM sequence as an example:

First, the length of the total pilot signal needs to be determined. Referring to the foregoing embodiment, if the placement of the pilot signals on each MAR is determined, then the pilot length L _MAR on each MAR is determined accordingly, and the following three situations are considered:

1. The terminal does not use the bundled MAR for transmission, the number of retransmissions N _HARQ is determined, and different pilot signals are used for retransmission, so the length of the total pilot signal is L _MAR ×N _HARQ ;

2. The terminal uses the bundled MAR for transmission without considering retransmission, so the length of the total pilot signal is L _MAR ×N _MAR ;

3. The terminal uses bundled MARs for transmission. Each MAR in the bundled MARs uses different pilot signals. The same MAR bundle size NMAR and different pilot signals are used for retransmission. The total pilot length is thus the total The length of the pilot signal is L _MAR ×N _MAR ×N _HARQ .

After determining the length of the total pilot signal, since the length of the original RM sequence is 2 ^m and m is a positive integer, it is necessary to reasonably segment the RM sequence according to the actual required pilot sequence length and transmission mode to form a corresponding short sequence. sequence.

Taking the above case 1 as an example, the segmentation method of the RM sequence will be described.

The total pilot sequence length is L _MAR ×N _HARQ , the required RM sequence length is 2 ^m , and the value of m is determined by the specific segmentation method. Segmentation methods include but are not limited to the following two ways:

Segmentation Method 1: Equally Spaced Segmentation Method

The 2 ^m long RM sequence is equally divided into N _HARQ segments, where m is the largest m value satisfying 2 ^m <L _MAR ×N _HARQ . The obtained short sequences of N _HARQ segments are respectively subjected to Fast Fourier Transformation (Fast Fourier Transformation, FFT) of L _MAR points to obtain short sequences of L _MAR lengths of N _HARQ segments, which are used for initial transmission and retransmission in turn, forming a total length of L _MAR ×N _HARQ pilot;

Segmentation method 2: unequal interval segmentation method

…，2^m-1的N_HARQ个短序列。第一段用于初传，后面的分段依次用于重传。比如以N_HARQ为2和4为例分别进行说明：The method of unequal length segmentation by the power of 2 is adopted, that is, the long sequence is segmented from front to back into a length of

..., 2 ^m-1 of N _HARQ short sequences. The first segment is used for initial transmission, and subsequent segments are used for retransmission in turn. For example, take N _HARQ as 2 and 4 as examples to illustrate:

When _NHARQ = 2, the sequence sequence is divided into two segments with lengths of 2 ^m-1 and 2 ^m-1 , wherein the first segment is used for initial transmission and the second segment is used for retransmission. During retransmission, the first segment of short pilots and the second segment of short pilots can be combined into a long pilot sequence for user detection. Because the RM sequence has the nesting property, both the short sequence and the long sequence conform to the definition of the RM sequence, and the combined long sequence enhances the user's detection performance. When N _HARQ = 4, the sequence sequence is divided into four segments with lengths of 2 ^m-3 , 2 ^m-3 , 2 ^m-2 and 2 ^m-1 , of which the first segment is used for initial transmission, and the next three segments are used for For retransmission, each retransmission can be combined with the previously transmitted short sequence to form a longer RM sequence enhanced detection.

For the determination of the value of m, the length of the longest segment in the segmented short sequence must be less than L _MAR , that is, to find the largest m value that satisfies 2 ^m-1 <L _MAR . Then, FFT of L _MAR length points is performed on each short sequence after segmentation, and a pilot frequency with a total length of L _MAR ×N _HARQ is generated.

For cases 2 and 3, a method similar to the above can be used to generate a pilot sequence, and unequal length segments are used to form short pilots for initial transmission, retransmission, and progressive detection using sequence characteristics.

In some embodiments of the present invention, after placing the first pilot signal on the bundled MAR in step 202, the terminal executes the process described in step 203 to send the bundled MAR on which the first pilot signal is placed. .

Specifically, the terminal places transmission content in the time-frequency resource, and the transmission content includes the first pilot signal and the data to be transmitted. For example, based on the example situation shown in FIG. 3 above, FIG. 7 shows a schematic diagram of time-frequency resources occupied by N bundled MARs in some embodiments of the present invention.

As shown in Figure 7, UE1 does not use the bundled MAR for transmission, and the transmitted MAR occupies resource block 22; UE2 uses the bundled 2 MARs for transmission, occupying resource blocks 11 and 33 respectively; UE3 uses the bundled 4 MARs for transmission Transmissions occupy resource blocks 31, 32, 33, and 34, respectively. Wherein UE2 and UE3 collide on resource block 33 .

Further, the terminal can also place the transmission content in various ways, that is, the bundled MAR can occupy time-frequency resources in various ways. For example, taking UE2 in Fig. 3 as an example, Fig. 8(a), Fig. 8(b), Fig. 8(c), Fig. 8(d), Fig. 8(e), and Fig. 8(f) respectively show the A schematic diagram of the terminal placing transmission content in the time-frequency resource in some embodiments of the invention:

As shown in Figure 8(a), UE2 can place the information to be transmitted on MARs with the same frequency domain and continuous time;

As shown in Figure 8(b), UE2 can place the information to be transmitted on MARs with the same frequency domain and discontinuous time;

As shown in Figure 8(c), UE2 can place the information to be transmitted on the MAR that is continuous in the frequency domain and has the same time;

As shown in Figure 8(d), UE2 can place the information to be transmitted on a MAR that is discontinuous in the frequency domain and has the same time;

As shown in Figure 8(e), UE2 can place the information to be transmitted on MARs with different frequency domains and continuous time;

As shown in Fig. 8(f), UE2 can place the information to be transmitted on MARs with different frequency domains and discontinuous time.

Specifically, in some embodiments of the present invention, in order to simplify the complexity when the network device performs terminal detection according to the pilot signal on the bundled MAR, on the terminal side, the time-frequency resource position occupied by the bundled MAR can be set in advance. It is selected from a set of configured time-frequency resource positions corresponding to the number N of MARs in the bundled MARs.

In the above manner, after receiving the bundled MAR transmitted by the terminal, the network device will be able to directly determine the bundled MAR used by the terminal transmitting the bundled MAR according to the location of the time-frequency resources occupied by the received bundled MAR. The number of MARs in the MAR, thereby avoiding the need for the network device to perform blind detection of multiple preset MAR bundle sizes, thereby simplifying the detection complexity of the network device.

Through the above embodiments of the present invention, the terminal can jointly use the pilot resources on the bundled MAR, and can further utilize the pilot resources during retransmission, so as to achieve the effect of using longer pilot signals in disguised form, and further This enables the network device to implement progressive terminal detection and improve the performance of terminal detection.

It can be seen that the scheme for uplink transmission provided by the embodiment of the present invention mainly uses the bundled MAR in combination to use a longer pilot signal in disguised form, so that the network device has progressive detection performance to enhance the license-free The terminal detection performance of the access system. The terminal can determine the length of the long pilot signal (the above-mentioned first pilot signal) through the size of the bundled MAR and the number of retransmissions, and the long pilot signal can be truncated, interleaved and then truncated to generate the short pilot. signal (the above-mentioned second pilot signal), so that the network equipment can combine the short pilot signals into long pilot signals one by one and then perform terminal detection. The length of the longer pilot signal enhances the detection performance of the user, and can provide More number of pilot signals.

FIG. 9 shows a flowchart of a method for uplink transmission provided by further embodiments of the present invention. The process shown in FIG. 9 may be implemented by a network device. For example, the network device 101 shown in FIG. 1 may be configured with functional modules for executing the process shown in FIG. 9 , and the functional modules for executing the process may be implemented by hardware, software programming, or a combination of software and hardware.

As shown in Figure 9, the process includes the following steps:

Step 901: The network device receives the bundled MAR transmitted by the terminal, and the bundled MAR is placed with a first pilot signal; the length of the first pilot signal is the number N of the MARs in the bundled MAR determined by the terminal according to the The determined number N is determined, and N is an integer greater than 1;

Step 902: The network device detects the terminal according to the first pilot signal placed on the bundled MAR.

Specifically, N MARs in the bundled MARs are respectively placed with N second pilot signals, the N second pilot signals are determined by the terminal according to the first pilot signals, and the length of the second pilot signals is less than or equal to the length of the first pilot signal.

In some embodiments of the present invention, the N second pilot signals may be obtained by dividing the first pilot signals into N by the terminal according to the sequence characteristics of the first pilot signals; or, the N second pilot signals It may be obtained by the terminal interleaving the first pilot signal, and dividing the interleaved first pilot signals into N pieces according to the sequence characteristics of the first pilot signal.

In some embodiments of the present invention, the length of the first pilot signal may be a product obtained by the terminal multiplying the determined number N by the length of the pilot signal that can be placed on each MAR.

In some embodiments of the present invention, the length of the pilot signal that can be placed on each MAR is determined by the terminal according to a predefined pilot placement manner and the size of each MAR.

Specifically, for the process of determining the length of the first pilot signal, acquiring the first pilot signal, and determining the second pilot signal by the terminal in the above-mentioned embodiments of this aspect, reference may be made to the methods described on the terminal side in the foregoing embodiments of the present invention. Process examples, which will not be repeated in this application.

In some embodiments of the present invention, the network device detects the terminal, and may specifically acquire the second pilot signal placed on each MAR in the bundled MARs, and each time a second pilot signal is acquired, the currently acquired After combining all the second pilot signals of the terminal, the terminal is detected.

Specifically, if the network device determines the starting position of the time-frequency resources occupied by the bundled MARs, the network device can sequentially acquire the second pilot signal placed on each MAR in the bundled MARs from the starting position; otherwise, The network device may try to acquire the second pilot signal placed on each MAR in the bundled MARs at all possible positions of the time-frequency resources occupied by the bundled MARs one by one.

Specifically, the network device may try the number of MARs among all possible bundled MARs one by one, and perform the above-mentioned progressive detection process in each attempt until a terminal is detected or the detection is completed.

In some embodiments of the present invention, on the terminal side, the time-frequency resource positions occupied by the bundled MARs may be selected from a pre-configured set of time-frequency resource positions corresponding to the number N of MARs in the bundled MARs, Further, the network device can determine the number N of MARs in the bundled MARs according to the frequency resource positions occupied by the received bundled MARs, thereby simplifying the complexity of terminal detection by the network device.

In some embodiments of the present invention, the network device can determine the possible transmission position of the terminal through a protocol or semi-persistent scheduling, and then the network device can directly combine the received pilot signals placed on the bundled MAR for terminal detection.

For example, based on the example of time-frequency resources occupied by N bundled MARs in some embodiments of the present invention as shown in FIG. 7 , it is assumed that the network device determines the number of MARs in the bundled MARs, the starting positions of the occupied time-frequency resources, and the number of MARs in the bundled MARs. The location of the time-frequency resources occupied by each MAR in the bundled MAR (for example, the network device determines the possible transmission location of the terminal (UE1, UE2, UE3) through a protocol or semi-persistent scheduling), then in time slot 1, the network device can be in the resource block. Obtain the pilot signal (that is, the second pilot signal placed on resource block 11) on 11, and detect whether UE2 exists according to the obtained pilot signal; in time slot 2, the network device can obtain the pilot in resource block 22. signal, UE1 is detected according to the obtained pilot signal, and the pilot signals on resource blocks 31 and 32 can be combined, and UE3 is detected according to the combined pilot signal; in time slot 3, the network device can obtain the resource block 33 Pilot signal, UE3 is detected according to the obtained pilot signal, and the pilot signals on resource blocks 31, 32, 33 can be combined, and UE3 is detected according to the combined pilot signal; in time slot 4, the network device can combine For the pilot signals on resource blocks 31, 32, 33, and 34, UE3 is detected according to the combined pilot signals.

For another example, suppose the network device determines the number of MARs in the bundled MARs and the positions of the time-frequency resources occupied by each MAR in the bundled MARs, but does not determine the starting positions of the time-frequency resources occupied by the MARs in the bundled MARs. Still based on the example of time-frequency resources occupied by two MARs bundled in UE1 as shown in FIG. 7 , FIG. 10 shows a schematic diagram of a situation in which a network device detects a terminal in some embodiments of the present invention. Among them, the number of MARs in the bundled MAR of UE1 is 2, and the location is in frequency band 2 at time slot t, where time slot t+1 is in frequency band 1:

In the time slot t, the network device detects the terminal on the time-frequency resource 21. There are three situations:

(1) Correct detection and correct decoding: Since the decoding has been correct, the network device may not detect the time-frequency resource 12 in the time slot t+1;

(2) Correct detection and wrong decoding: Since the network device knows that UE1 transmits on frequency band 2, UE1 must transmit on time-frequency resource 12 in time slot t+1. Therefore, in time slot t+1, the network device jointly decodes time-frequency resources 12 and 21;

(3) Detection error: Due to the detection error, the network device does not know that UE1 has transmitted. Therefore, in the time slot t+1, the network device first detects the terminal in the time-frequency resource 22, and then the network device detects the terminal in the time-frequency resource 12 and 21. The pilot signals are combined for joint detection. At this time, since the pilot signal becomes longer, the UE1 that is not detected for the first time has a higher detection probability at this time.

Specifically, the network device may detect the terminal according to the first pilot signal placed on the bundled MAR according to the first pilot signal generated by the terminal and the terminal placing the first pilot signal on the bundled MAR. The specific implementation can be obtained according to the method embodiments on the terminal side described in the above-mentioned embodiments of the present invention and the method embodiments on the network device side described in the above-mentioned embodiments of the present invention. No further description will be given.

To sum up, in the technical solution for uplink transmission provided by the above embodiments of the present invention, the terminal can jointly design the pilot signal used in MAR bundling, and further can jointly design the initial transmission, retransmission The pilot signal used when bundling with MAR, and then the pilot frequency used for initial transmission, retransmission and MAR bundling can be jointly detected on the network device side, thereby enhancing the terminal detection performance.

For a communication system using license-free transmission, the technical solutions provided by the embodiments of the present invention can make up for the defect that there is no better technical solution for enhancing terminal detection signals at present, and provide transmission reliability.

For example, Massive Machine-Type Communication (mMTC) is an important application scenario of the 5th Generation (5G) mobile communication technology. The typical feature of this scenario is large connections, that is, the number of terminals. It is huge, the business type is mainly small data packet business, and there are certain requirements for low latency. In this scenario, license-free transmission is considered to be a more applicable uplink data transmission method than authorized transmission. Therefore, through the technical solutions for uplink transmission provided by the embodiments of the present invention, the performance of terminal detection by the network device in this scenario can be increased, and the effect of improving transmission reliability can be achieved.

Ultra-Reliable Low Latency Communication (URLLC) is also an important application scenario of 5G. For some businesses such as Internet of Vehicles, unmanned driving, and industrial control, system capacity is not a major issue, but there are high requirements for latency and reliability. In such a scenario, license-free transmission is considered to be a more applicable uplink data transmission method than licensed transmission. Compared with the authorized transmission scheme scheduled by the base station, the authorization-free transmission does not need to go through the process of sending an uplink scheduling request and waiting for the authorization of the base station, which greatly shortens the transmission delay and meets the delay requirements of the URLLC scenario. Therefore, through the technical solutions for uplink transmission provided by the embodiments of the present invention, the performance of terminal detection by the network device in this scenario can be increased, and the effect of improving transmission reliability can be achieved.

Based on the same inventive concept, the present application also provides an apparatus for uplink transmission. The apparatus can be specifically implemented by hardware, software or a combination of software and hardware. The apparatus can be a terminal, such as shown in FIG. 1 . A terminal 102 in a communication system.

FIG. 11 shows a schematic structural diagram of an apparatus for uplink transmission provided by some embodiments of the present invention. As shown in Figure 11, the device includes:

A determination module 1101, configured to determine the number N of MARs in the bundled MARs, and determine the length of the first pilot signal according to the determined number N, where N is an integer greater than 1;

a placing module 1102, configured to acquire a first pilot signal with the length, and place the first pilot signal on the bundled MAR;

A sending module 1103, configured to send the bundled MAR in which the first pilot signal is placed.

In some embodiments of the present invention, the placing module 1102 may be specifically used for:

Determine N second pilot signals according to the first pilot signals, and the length of each second pilot signal is less than or equal to the length of the first pilot signal;

The N second pilot signals are respectively placed on N MARs in the bundled MARs.

In some embodiments of the present invention, the placing module 1102 may be specifically used for:

According to the sequence characteristics of the first pilot signal, the first pilot signal is divided into N second pilot signals; According to the sequence characteristic of the frequency signal, the interleaved first pilot signal is divided into N second pilot signals.

In some embodiments of the present invention, the determining module 1101 may be specifically used for:

The product of the number N and the length of the pilot signal that can be placed on each MAR is calculated, and the product is determined as the length of the first pilot signal.

In some embodiments of the present invention, the length of the pilot signal that can be placed on each MAR is determined by the determining module according to a predefined pilot placement manner and the size of each MAR.

In some embodiments of the present invention, the time-frequency resource positions occupied by the bundled MARs are selected from a pre-configured set of time-frequency resource positions corresponding to the number N of the MARs.

Specifically, since the device provided by the foregoing embodiments of the present invention is similar to the method embodiments on the terminal side provided by the foregoing embodiments of the present invention in terms of solving problems, the specific implementation of the device provided by the foregoing embodiments of the present invention may be the same as that of the present invention. For the implementation of the method on the terminal side provided by the foregoing embodiments of the present invention, reference may be made to each other, and repeated descriptions will not be repeated.

Based on the same inventive concept, the present application also provides an apparatus for uplink transmission. The apparatus can be specifically implemented by hardware, software or a combination of software and hardware. The apparatus can be a network device, such as shown in FIG. 1 . The network device 101 in the communication system.

FIG. 12 shows a schematic structural diagram of an apparatus for uplink transmission provided by some embodiments of the present invention. As shown in Figure 12, the device includes:

The receiving module 1201 is configured to receive a bundled MAR transmitted by a terminal, where a first pilot signal is placed on the bundled MAR; the length of the first pilot signal is the MAR in the bundled MAR determined by the terminal After the number N, determined according to the determined number N, N is an integer greater than 1;

The detection module 1202 is configured to detect a terminal according to the first pilot signal placed on the bundled MAR.

In some embodiments of the present invention, N second pilot signals are respectively placed on N MARs in the bundled MARs, and the second pilot signals are determined by the terminal according to the first pilot signals Yes, the length of the second pilot signal is less than or equal to the length of the first pilot signal.

In some embodiments of the present invention, the detection module 1202 is specifically used for:

Acquire the second pilot signal placed on each MAR in the bundled MARs, and detect the terminal after combining all the currently acquired second pilot signals each time a second pilot signal is acquired.

In some embodiments of the present invention, the detection module 1202 is specifically used for:

If the starting position of the time-frequency resources occupied by the bundled MARs is determined, then sequentially acquire the second pilot signal placed on each MAR in the bundled MARs from the starting position; otherwise,

Attempting to acquire the second pilot signal placed on each MAR in the bundled MARs at all possible positions of the time-frequency resources occupied by the bundled MARs one by one.

In some embodiments of the present invention, the N second pilot signals are obtained by dividing the first pilot signals into N by the terminal according to the sequence characteristics of the first pilot signals; or,

The N second pilot signals are for the terminal to interleave the first pilot signals, and according to the sequence characteristics of the first pilot signals, the divided and interleaved first pilot signals are N obtained.

In some embodiments of the present invention, the length of the first pilot signal is a product obtained by multiplying the determined number N by the terminal and the length of the pilot signal that can be placed on each MAR.

In some embodiments of the present invention, the length of the pilot signal that can be placed on each MAR is determined by the terminal according to a predefined pilot placement manner and the size of each MAR.

In some embodiments of the present invention, the detection module 1202 is specifically used for:

After the receiving module receives the bundled MARs transmitted by the terminal, the number N of MARs in the bundled MARs is determined according to the frequency resource positions occupied by the received bundled MARs.

Specifically, since the apparatuses provided by the foregoing embodiments of the present invention are similar to the method embodiments on the network device side provided by the foregoing embodiments of the present invention in solving problems, the specific implementation and benefits of the apparatuses provided by the foregoing embodiments of the present invention are The effects can be referred to each other with respect to the implementation and beneficial effects of the method on the network device side provided by the foregoing embodiments of the present invention, and repeated descriptions will not be repeated.

The division of modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be other division methods. In addition, the functional modules in the various embodiments of the present application may be integrated into one processing unit. In the device, it can also exist physically alone, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.

Based on the same inventive concept, the present application also provides a terminal. FIG. 13 shows a schematic structural diagram of a terminal provided by some embodiments of the present invention.

As shown in FIG. 13 , the terminal 1300 may include a processor 1302 . The processor 1302 may be a central processing unit (English: central processing unit, CPU for short), or a digital processing module or the like. The terminal 1300 may further include a communication interface 1301, and the processor 1302 sends the bundled MAR through the communication interface 1301. The terminal 1300 further includes: a memory 1303 for storing programs executed by the processor 1302 . The memory 1303 may be a non-volatile memory, such as a hard disk (English: hard disk drive, abbreviation: HDD) or a solid-state drive (English: solid-state drive, abbreviation: SSD), etc., or a volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM). Memory 1303 is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by processor 1302 .

The processor 1302 is configured to execute the program code stored in the memory 1303, and is specifically configured to execute the terminal-side method provided by the foregoing embodiments of the present invention. This application will not repeat them here.

The specific connection medium between the communication interface 1301 , the processor 1302 , and the memory 1303 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 1303, the processor 1302, and the communication interface 1301 are connected by a bus 1304 in FIG. 13. The bus is represented by a thick line in FIG. 13, and the connection between other components is only for schematic illustration. , is not limited. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 13, but it does not mean that there is only one bus or one type of bus.

An embodiment of the present invention further provides a readable storage medium for storing software instructions to be executed for executing the above-mentioned processor, which includes a program to be executed for executing the above-mentioned processor.

Based on the same inventive concept, the present application also provides a network device. FIG. 14 shows a schematic structural diagram of a network device provided by some embodiments of the present invention.

As shown in FIG. 14 , the network device 1400 may include a processor 1402 . The processor 1402 may be a central processing module, or a digital processing module, or the like. The network device 1400 may further include a communication interface 1401, and the processor 1402 receives the bundled MAR through the communication interface 1401. The network device 1400 further includes: a memory 1403 for storing programs executed by the processor 1402 . The memory 1403 may be a non-volatile memory, such as a hard disk or a solid-state disk, or a volatile memory, such as a random access memory. Memory 1403 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by processor 1402, but is not limited thereto.

The processor 1402 is configured to execute the program code stored in the memory 1403, and is specifically configured to execute the method on the network device side provided by the foregoing embodiments of the present invention. This application will not repeat them here.

The specific connection medium between the communication interface 1401 , the processor 1402 , and the memory 1403 is not limited in this embodiment of the present application. In the embodiment of the present application, the memory 1403, the processor 1402, and the communication interface 1401 are connected through a bus 1404 in FIG. 14. The bus is represented by a thick line in FIG. 14, and the connection between other components is only for schematic illustration. , is not limited. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is shown in FIG. 14, but it does not mean that there is only one bus or one type of bus.

An embodiment of the present invention further provides a readable storage medium for storing software instructions to be executed for executing the above-mentioned processor, which includes a program to be executed for executing the above-mentioned processor.

It should be appreciated by those skilled in the art that the embodiments of the present application may be provided as a method, system, or program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a program product embodied on one or more available storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and program products according to the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by program instructions. These program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the or other programmable data processing device produce a A means for the functions specified in a flow or flows of a flowchart and/or a block or blocks of a block diagram.

The program instructions may also be stored in a readable memory capable of directing a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the readable memory result in an article of manufacture comprising instruction means implemented in Flowchart A process or processes and/or a block diagram of the functions specified in a block or blocks.

These 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 the computer or other programmable device to produce the corresponding device-implemented processing, thereby executing on the computer or other programmable device. The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (28)

1. A method for uplink transmission, the method comprising:

the terminal determines the number N of MARs in the bundled multi-access resources MAR, and determines the length of a first pilot signal according to the determined number N, wherein N is an integer greater than 1;

the terminal acquires a first pilot signal having the length and places the first pilot signal on the bundled MAR;

the terminal transmits the bundled MAR in which the first pilot signal is placed.

2. The method of claim 1, wherein the terminal placing the first pilot signal on the bundled MAR comprises:

the terminal determines N second pilot signals according to the first pilot signal, wherein the length of each second pilot signal is less than or equal to that of the first pilot signal;

the terminal places the N second pilot signals on N MARs, respectively, of the bundled MARs.

3. The method of claim 2, wherein the terminal determines N second pilot signals from the first pilot signal, comprising:

the terminal divides the first pilot signal into N second pilot signals according to the sequence characteristics of the first pilot signal; or,

the terminal interweaves the first pilot signal and divides the interwoven first pilot signal into N second pilot signals according to the sequence characteristics of the first pilot signal.

4. The method of any of claims 1-3, wherein the terminal determining the length of the first pilot signal based on the determined number N comprises:

the terminal calculates the product of the number N and the length of each MAR over which a pilot signal can be placed, and determines the product as the length of the first pilot signal.

5. The method of claim 4, wherein the length of pilot signals placeable on each MAR is determined by the terminal based on a predefined pilot placement and the size of each MAR.

6. The method of any of claims 1-3, wherein the time-frequency resource locations occupied by the bundled MARs are chosen among a pre-configured set of time-frequency resource locations corresponding to the number N of MARs.

7. A method for uplink transmission, the method comprising:

the method comprises the steps that network equipment receives a bundled MAR transmitted by a terminal, and a first pilot signal is placed on the bundled MAR; the length of the first pilot signal is determined by the terminal according to the determined number N after the number N of the MARs in the bundled MARs is determined, wherein N is an integer greater than 1;

and the network equipment detects the terminal according to the first pilot signal placed on the bundled MAR.

8. The method of claim 7, wherein N second pilot signals are placed on each of N of the bundled MARs, the second pilot signals being determined by the terminal from the first pilot signals, the second pilot signals having a length less than or equal to the length of the first pilot signals.

9. The method of claim 8, wherein the network device detecting the terminal based on the first pilot signal placed on the bundled MAR comprises:

and the network equipment acquires the second pilot signals arranged on each MAR in the bundled MARs, and detects the terminal after combining all the currently acquired second pilot signals when acquiring one second pilot signal.

10. The method of claim 9, wherein the network device acquiring the second pilot signals placed on each MAR in the bundled MARs comprises:

if the network equipment determines the initial position of the time-frequency resource occupied by the bundled MARs, the network equipment sequentially acquires a second pilot signal placed on each MAR in the bundled MARs from the initial position; if not, then,

the network device tries to acquire the second pilot signals placed on each MAR in the bundled MARs at all positions of the time-frequency resources occupied by the bundled MARs one by one.

11. The method according to any of claims 8-10, wherein the N second pilot signals are obtained by the terminal splitting the first pilot signal into N according to the sequence characteristics of the first pilot signal; or,

the N second pilot signals are obtained by interweaving the first pilot signals by the terminal and dividing the interweaved first pilot signals into N according to the sequence characteristics of the first pilot signals.

12. The method of any of claims 7-10, wherein the length of the first pilot signal is the product of the terminal multiplying the determined number N by the length over which a pilot signal can be placed on each MAR.

13. The method of claim 12, wherein the length of pilot signals placeable on each MAR is determined by the terminal based on a predefined pilot placement and the size of each MAR.

14. The method of any of claims 7-10, wherein the network device, upon receiving the bundled MAR transmitted by the terminal, further comprises: and the network equipment determines the number N of the MARs in the bundled MARs according to the frequency resource positions occupied by the received bundled MARs.

15. An apparatus for uplink transmission, the apparatus being a terminal, the apparatus comprising:

a determining module, configured to determine a number N of MARs in the bundled MARs, and determine a length of the first pilot signal according to the determined number N, where N is an integer greater than 1;

a placement module to obtain a first pilot signal having the length and place the first pilot signal on the bundled MAR;

a transmitting module for transmitting the bundled MAR in which the first pilot signal is placed.

16. The apparatus of claim 15, wherein the placement module is specifically configured to:

determining N second pilot signals according to the first pilot signals, wherein the length of each second pilot signal is less than or equal to that of the first pilot signals;

placing the N second pilot signals onto N MARs, respectively, of the bundled MARs.

17. The apparatus of claim 16, wherein the placement module is specifically configured to:

dividing the first pilot signal into N second pilot signals according to the sequence characteristics of the first pilot signal; or interleaving the first pilot signal, and dividing the interleaved first pilot signal into N second pilot signals according to the sequence characteristics of the first pilot signal.

18. The apparatus according to any one of claims 15 to 17, wherein the determining module is specifically configured to:

the product of the number N and the length over which a pilot signal can be placed on each MAR is calculated and determined as the length of the first pilot signal.

19. The apparatus of claim 18, wherein the length over which pilot signals can be placed on each MAR is determined by the determination module based on a predefined pilot placement and size of each MAR.

20. The apparatus of any of claims 15-17, wherein the time-frequency resource locations occupied by the bundled MARs are chosen among a preconfigured set of time-frequency resource locations corresponding to the number N of MARs.

21. An apparatus for uplink transmission, the apparatus being a network device, the apparatus comprising:

the receiving module is used for receiving a bundled MAR transmitted by a terminal, and a first pilot signal is placed on the bundled MAR; the length of the first pilot signal is determined by the terminal according to the determined number N after the number N of the MARs in the bundled MARs is determined, wherein N is an integer greater than 1;

a detection module, configured to detect the terminal according to the first pilot signal placed on the bundled MAR.

22. The apparatus of claim 21, wherein N second pilot signals are placed on each of N of the bundled MARs, the second pilot signals being determined by the terminal from the first pilot signals, the second pilot signals having a length less than or equal to the length of the first pilot signals.

23. The apparatus of claim 22, wherein the detection module is specifically configured to:

and acquiring a second pilot signal arranged on each MAR in the bundled MARs, and detecting the terminal after combining all the currently acquired second pilot signals when acquiring one second pilot signal.

24. The apparatus of claim 23, wherein the detection module is specifically configured to:

if the initial position of the time-frequency resource occupied by the bundled MARs is determined, sequentially acquiring a second pilot signal placed on each MAR in the bundled MARs from the initial position; if not, then,

and trying to acquire the second pilot signals placed on each MAR in the bundled MARs at all positions of the time-frequency resources occupied by the bundled MARs one by one.

25. The apparatus according to any of claims 22-24, wherein the N second pilot signals are obtained by the terminal splitting the first pilot signal into N according to the sequence characteristics of the first pilot signal; or,

the N second pilot signals are obtained by interweaving the first pilot signals by the terminal and dividing the interweaved first pilot signals into N according to the sequence characteristics of the first pilot signals.

26. The apparatus of any of claims 21-24, wherein the length of the first pilot signal is a product of the terminal multiplying the determined number N by a length over which a pilot signal can be placed on each MAR.

27. The apparatus of claim 26, wherein the length over which pilot signals can be placed on each MAR is determined by the terminal based on a predefined pilot placement and the size of each MAR.

28. The apparatus according to any one of claims 21 to 24, wherein the detection module is specifically configured to:

after the receiving module receives the bundled MARs transmitted by the terminal, the number N of the MARs in the bundled MARs is determined according to the frequency resource positions occupied by the received bundled MARs.

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