CN108347322A

CN108347322A - A kind of method and device for uplink transmission

Info

Publication number: CN108347322A
Application number: CN201710061321.6A
Authority: CN
Inventors: 王超; 陈雁; 吴艺群; 张蕾; 孟祥明
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-01-25
Filing date: 2017-01-25
Publication date: 2018-07-31
Anticipated expiration: 2037-01-25
Also published as: CN108347322B

Abstract

The present application discloses a method and device for uplink transmission to enhance the performance of terminal detection. The method includes: 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; the terminal acquires the first pilot signal with the length , and place the first pilot signal on the bundled MAR; the terminal sends the bundled MAR on which the first pilot signal is placed.

Description

Method and device for uplink transmission

Technical Field

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

Background

In a conventional wireless cellular network, for example, in a Long Term Evolution (LTE) system, before transmitting data in an uplink, a terminal often needs to establish Radio Resource Control (RRC) connection with a base station, enter a Radio resource control connection state, and then send a Scheduling Request (SR) to the base station, and if the base station allows the terminal to transmit data in the uplink, the base station sends an authorization instruction to the terminal, and the terminal can send the uplink data to the base station according to the instruction requirement after receiving the authorization instruction.

The transmission of uplink data is realized through the authorization transmission process, and one disadvantage is that the time delay for determining that uplink data needs to be transmitted to the terminal from an air interface to transmit the data out is larger; another disadvantage is that when the number of terminals having uplink data transmission requirements in a certain period of time is very large, the consumption of uplink and downlink control channel resources for transmitting scheduling requests and grants is very large, which results in a high proportion of control overhead in the total network overhead (such as power, air interface resources, etc.), and especially when the services of the terminals are all small data packet services, the disadvantage of grant transmission is particularly obvious.

The Grant free (Grant free) transmission scheme can realize that data is 'come and go', and when a terminal determines that uplink data is to be sent, the terminal directly sends the data to a base station after certain processing without the processes of sending an uplink scheduling request and waiting for receiving the Grant of the base station. Therefore, compared with the authorization transmission scheme scheduled by the base station, the method can greatly shorten the transmission delay and avoid the excessive occupation of the control overhead on network resources.

In order to implement the unlicensed transmission, before the unlicensed transmission, the base station needs to pre-specify available unlicensed resources, such as uplink pilot resources, time-frequency resources, and the like, for the terminal, and may need to detect, by means of blind detection and the like, from which terminal the received data comes. Because the terminal does not need base station authorization to send uplink data, the terminal detection performance becomes the bottleneck of the transmission reliability of a wireless communication system using authorization-free transmission, and how to enhance the terminal detection performance does not have a good solution at present.

Disclosure of Invention

The application provides a method and a device for uplink transmission, which are used for enhancing 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 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.

Because the terminal determines the length of the first pilot signal based on the number N of the MARs in the bundled MARs and places the first pilot signal with the length on the bundled MARs, the terminal can fully utilize pilot resources provided by a plurality of MARs in the bundled MARs to generate longer pilot signals, provide more pilot signal numbers, and expand the selectable range of the pilot signals, thereby achieving the effects of improving the detection performance of the terminal and enhancing the transmission reliability.

In one possible implementation, the terminal placing the first pilot signal onto the bundled MAR includes:

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.

Since the N second pilot signals are respectively placed on the N MARs in the bundled MAR, the network device can sequentially detect the second pilot signals distributed on the N MARs in the received bundled MAR, and the effect of enhancing the detection performance of the terminal is achieved by such a progressive detection manner.

In one possible implementation, the terminal determining N second pilot signals from the first pilot signal includes:

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.

In one possible implementation, the terminal determining the length of the first pilot signal according to the determined number N includes:

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.

In one possible implementation, the length of the MARs where pilot signals can be placed is determined by the terminal according to a predefined pilot placement and the size of each MAR.

In a possible implementation, the time-frequency resource locations occupied by the bundled MARs are selected from a set of time-frequency resource locations that is pre-configured and corresponds to the number N of the MARs.

Through the method, after receiving the bundled MARs transmitted by the terminal, the network equipment can directly determine the number of the MARs in the bundled MARs used by the terminal for transmitting the bundled MARs according to the positions of the time-frequency resources occupied by the received bundled MARs, so that the network equipment is prevented from trying to perform blind detection on the preset sizes of the multiple MAR bundles, and the detection complexity of the network equipment is simplified.

In a second aspect, the present application provides 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.

The network equipment can detect the terminal according to the first pilot signal placed on the bundled MAR, and the first pilot signal is from a selectable pilot signal set with a larger range, so that the effects of improving the detection performance of the terminal and enhancing the transmission reliability can be achieved.

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

In one possible implementation, the network device detecting the terminal according to the first pilot signal placed on the bundled MAR includes:

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.

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

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

In one possible implementation, 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.

In one possible implementation, after the network device receives the bundled MAR transmitted by the terminal, the method further includes: 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.

In a third aspect, the present application provides 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.

In a possible implementation, 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.

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.

In a possible implementation, 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.

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

The implementation and the advantageous effects of the apparatus implemented by any one of the third aspect or the third aspect of the present invention may be mutually referred to the implementation and the advantageous effects of the method implemented by any one of the first aspect or the first aspect of the present invention, and repeated details are not repeated.

In a fourth aspect, the present application provides 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.

In a possible implementation, 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.

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 possible positions of the time-frequency resources occupied by the bundled MARs one by one.

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.

The implementation and the advantageous effects of the apparatus according to any of the above-mentioned fourth aspect or the fourth aspect of the present invention may be mutually referred to the implementation and the advantageous effects of the method according to any of the above-mentioned second aspect or the second aspect of the present invention, and repeated descriptions are omitted.

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

In a sixth aspect, the present application provides a terminal, including: the system comprises a communication interface, a memory and a processor, wherein the memory is used for storing program codes required to be executed by the processor. The communication interface is used to transport the bundled MAR. The processor is configured to execute the program code stored in the memory, and in particular, to execute the method according to any of the above first aspect or the first aspect of the present invention.

In a seventh aspect, the present application provides a network device, including: the system comprises a communication interface, a memory and a processor, wherein the memory is used for storing program codes required to be executed by the processor. The communication interface is used to receive the bundled MAR. The processor is configured to execute the program code stored in the memory, and in particular, to execute the method according to any of the above second aspect or 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 first aspect and the first aspect of the present invention, which contains a program designed to execute the method implemented by any one of the above first aspect and the first aspect of the present invention.

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

Drawings

FIG. 1 is a block diagram of a wireless communication system;

fig. 2 is a flow chart of a method for uplink transmission provided by some embodiments of the present invention;

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

FIG. 4(a) is a diagram illustrating the lengths of each MAR over which a pilot signal can be placed in some embodiments of the present invention;

FIG. 4(b) is a diagram illustrating the lengths of each MAR over which a pilot signal can be placed in some embodiments of the present invention;

FIG. 4(c) is a diagram illustrating the lengths of each MAR over which a pilot signal can be placed in some embodiments of the present invention;

FIG. 4(d) is a diagram illustrating the lengths of each MAR over which a pilot signal can be placed in some embodiments of the present invention;

FIG. 4(e) is a diagram illustrating the lengths of each MAR over which a pilot signal can be placed in some embodiments of the present invention;

FIG. 4(f) is a diagram illustrating the lengths of each MAR over which a pilot signal can be placed in some embodiments of the present invention;

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

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

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

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

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

FIG. 7 is a diagram illustrating that N MARs bundled occupy time-frequency resources in some embodiments of the present invention;

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

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

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

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

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

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

fig. 9 is a schematic diagram of a flow of a method for uplink transmission according to further embodiments of the present invention;

FIG. 10 is a diagram illustrating a network device detecting a terminal according to some embodiments of the invention;

fig. 11 is a schematic structural diagram of an apparatus for uplink transmission according to some embodiments of the present invention;

fig. 12 is a schematic structural diagram of an apparatus for uplink transmission according to some embodiments of the present invention;

fig. 13 is a schematic structural diagram of a terminal according to some embodiments of the present invention;

fig. 14 is a schematic structural diagram of a network device according to some embodiments of the present invention.

Detailed Description

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

Fig. 1 illustrates an architectural diagram of a wireless communication system in accordance with some embodiments of the present invention. As shown in fig. 1, the wireless communication system includes a network device 101 and at least one terminal 102. Wherein the terminal 102 can communicate with the network device 101 through a wireless link.

The network device 101 may manage UpLink (UL) and DownLink (DL) transmissions for terminals 102 in communication with the network device 101. Where uplink transmission refers to communication from the terminal 102 to the network device 101.

If the unlicensed 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 the pilot signal and the terminal have a mapping relationship, the network device can determine which terminal the received uplink data comes from by detecting the pilot signal. The pilot signal in the current pilot signal design only depends on the placement position of the pilot signal on the time-frequency resource, so that the selectable range of the pilot signal is limited, the detection performance of the network equipment on the terminal is limited, and the transmission reliability of the wireless communication system using the authorization-free transmission is further influenced.

Conventional techniques for enhancing the transmission reliability of wireless communication systems include:

a Hybrid Automatic Repeat request (HARQ) technology, which generates multiple Redundancy Versions (RVs) of a Transport Block (TB), and sends a first RV on a certain time frequency resource Block, and whether a subsequent RV is sent depends on Acknowledgement (ACK)/Negative Acknowledgement (NACK) of previous transmission, and ensures link reliability through retransmission and merging;

a subframe Bundling (TTI Bundling) technique, in which different RVs corresponding to the same TB may be sent in consecutive subframes without waiting for responded ACK/NACK, and when all transmissions corresponding to the TB are received and processed, the network device sends a combined ACK/NACK, that is, the network device receives multiple transmissions (different RVs) of the same TB in consecutive subframes, and after performing soft combining processing, uses one ACK/NACK to make a uniform response, and utilizes Time diversity to increase Transmission reliability.

The above-mentioned techniques for enhancing the transmission reliability of the wireless communication system can enhance the reliability of the data transmitted in the wireless communication system to a certain extent, but cannot enhance the detection performance of the network device for the terminal. In view of the correlation between the terminal detection capability of the network device and the pilot signal and the characteristics of the above-mentioned technology for enhancing the transmission reliability of the wireless communication system, embodiments of the present invention provide a method and an apparatus for uplink transmission, in which a terminal side uses the pilot Resource on a bundled Multiple Access Resource (MAR), places a pilot signal of a joint design on the bundled MAR, and performs joint detection on the pilot signal placed on the bundled MAR at the network device side, thereby achieving the purposes of enhancing the terminal detection performance and enhancing the transmission reliability.

Various embodiments are described herein in connection with a terminal. A terminal can also refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User device. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal in a future 5G Network or a terminal in a future evolved Public Land Mobile Network (PLMN) Network, etc.

Various embodiments are described herein in connection with a network device. The network Device may be a Device for communicating with a terminal, and for example, may be a Base Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB) or an eNodeB) in an LTE system, a terminal serving as a network Device function in D2D (Device to Device) communication, or a network Device in a relay Station, an access point, a vehicle-mounted Device, a transmitting point, a wearable Device, a network-side Device in a future 5G network, a network Device in a future evolved PLMN network, or any Device that serves a network function.

A Multiple Access Resource (MAR) referred to in the present application is composed of a Multiple Access Physical Resource (MA Physical Resource, MAPR) and a Multiple Access Signature (MA Signature, MAs). Wherein, MAPR is Time Frequency Resource (Time Frequency Resource); MAS includes at least one of, but not limited to: Codebook/Codeword (Codebook/Codeword), Sequence (Sequence), interleaving and/or mapping pattern (Interleaver and/or mapping pattern), Demodulation reference signal (Demodulation reference signal), Preamble (Preamble), Spatial-dimension (Spatial-dimension), Power-dimension (Power-dimension).

In a wireless communication system using the authorization-free transmission, when the number of terminals is large, different terminals can adopt the same MAPR and use different MASs for transmission; as the number of terminals increases further, different terminals may use the same MAS for transmission on the same MAPR.

In addition, the plurality referred to in the present application means two or more. The terms first, second, etc. described herein are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order.

In the scheme for uplink transmission provided in the embodiment of the present invention, a terminal may determine the length of a first pilot signal according to the number N of Multiple Access Resources (MARs) in a bundled MAR, and after acquiring the first pilot signal having the length, send the bundled MAR in which the first pilot signal is placed; further, the network device may receive a bundled MAR transmitted by a terminal and detect the terminal transmitting the bundled MAR based on a first pilot signal placed on the bundled MAR. Because the length of the pilot signal generated by the terminal depends on the number of the MARs in the bundled MARs, according to the scheme for uplink transmission provided by the embodiment of the present invention, the terminal can place the pilot signal of the joint design on the resources of the bundled MARs and perform joint detection on the pilot signal on the bundled MARs on the network device side, thereby enhancing the user detection performance and improving the system transmission reliability.

Fig. 2 illustrates a flow chart of a method for uplink transmission provided by some embodiments of the present invention. The flow shown in fig. 2 may be implemented by a terminal. For example, the terminal 102 shown in fig. 1 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 hardware and software.

As shown in fig. 2, the process includes the following steps:

step 201: 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;

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

step 203: the terminal transmits the bundled MAR in which the first pilot signal is placed.

Because 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, the pilot resources provided by a plurality of MARs in the bundled MAR can be fully utilized, on one hand, a longer pilot signal can be generated, a larger number of pilot signals can be provided, and the selectable range of the pilot signal can be extended, on the other hand, the placement of the first pilot signal on the bundled MAR enables the network device to progressively detect the terminal according to the first pilot signal placed on the bundled MAR, and thus, the effects of improving the terminal detection performance and enhancing the transmission reliability can be achieved through the two aspects.

Specifically, for step 201, in some embodiments of the present invention, after determining the number N of MARs in a bundled MAR, the terminal may determine the calculated product as the length of the first pilot signal by calculating the product of the determined number N of MARs in a bundled MAR and the length of each MAR over which the pilot signal can be placed.

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

For step 202, in some embodiments of the present invention, when the terminal places the first pilot signal on the bundled MAR, N second pilot signals may be determined according to the first pilot signal, and then the N second pilot signals are respectively placed on N MARs in the bundled MAR. Each of the N second pilot signals has a length less than or equal to a length of the first pilot signal.

Specifically, 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 invention:

as shown in FIG. 3, the size of the MAR can be expressed as a continuum of N in the frequency domain_RBA plurality of RBs, each RB occupying N_subSub-carriers and N_symOne OFDM symbol with a total of N_sub×N_symRE, N of the first column_subThe REs are used to place pilot signals, and thus, the length of pilot signals that can be placed on each MAR can be represented as N_sub；

Assume that the UE1 does not use a bundled MAR for transmission, and thus the first pilot signal (P) determined by the UE1₁) Has a length of N_sub；

The UE2 uses bundled MARs for transmission, and the number of MARs in the bundled MARs used is 2, thus the first pilot signal (P) determined by the UE2₂) Is 2N in length_sub；

The UE3 uses a bundled MAR for transmission, andthe number of MARs in the bundled MARs used is 4, so the first pilot signal (P) determined by the UE2₃) Is 4N in length_sub。

Furthermore, as shown in fig. 3, when placing the respective determined first pilot signal on the respective used bundled MAR, each terminal:

the UE1 may be directly N long_subOf the first pilot signal (P)₁) Placing on the MAR;

the UE2 may transmit a first pilot signal (P)₂) Are sequentially divided into lengths of N_subAfter two segments (equivalent to 2 second pilot signals), place them on 2 MARs in the bundled MARs, respectively;

the UE3 may transmit a first pilot signal (P)₃) Are sequentially divided into lengths of N_subAfter four segments (equivalent to 4 second pilot signals), it is placed on 4 MARs in the bundled MARs, respectively.

In the example shown in fig. 3, since the terminal determines the length of the first pilot signal using the number N of MARs in the bundled MARs and sequentially divides the first pilot signal into N second pilot signals to be placed on the respective MARs in the bundled MARs, the length of the second pilot signals corresponds 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 predefined pilot placement may be defined by a wireless standard or configured to the terminal by the network device.

Specifically, the predefined pilot placement may be used to define the placement of pilot signals on each MAR, and specifically may be to define the manner in which pilot symbols occupy REs. According to the predefined pilot placement 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.

Specifically, fig. 4(a), fig. 4(b), fig. 4(c), fig. 4(d), fig. 4(e), and fig. 4(f) respectively show the lengths of the MARs where the pilot signals can be placed in some embodiments of the present invention. Wherein it is assumed that the size of each MAR is the same as the MAR described in FIG. 3, i.e. one MAR has N in common_sub×N_symRE, while for simplicity of description, assume N_subIs an even number:

the placement of the pilot signal on the MAR is defined as occupying the entire MAR bandwidth and one symbol of time, as shown in fig. 4(a), so in the example shown in fig. 4(a), the pilot signal can be placed on each MAR for a length of N_sub(ii) a This example scenario is the example scenario where a pilot signal is placed on the MAR shown in fig. 3;

the placement of pilot signals on the MAR is defined as the time occupying the entire MAR bandwidth and one symbol at intervals of one subcarrier, as shown in fig. 4(b), so in the example shown in fig. 4(b), each MAR can have a pilot signal placed thereon of length N_sub/2；

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

The placement of pilot signals on the MAR is defined as occupying the entire MAR bandwidth and two symbols of time at intervals of one subcarrier, as shown in fig. 4(d), and the positions are aligned on the subcarriers, so that in the example shown in fig. 4(d), each MAR can place a pilot signal of length N_sub；

The placement of pilot signals on the MAR is defined as occupying the entire MAR bandwidth and two symbols of time at intervals of one subcarrier, as shown in fig. 4(e), and the positions are staggered on the subcarriers, so that in the example shown in fig. 4(e), each MAR can place a pilot signal of length N_sub；

The placement of the pilot signal on the MAR is defined as occupying the entire MAR bandwidth and two symbol times, as shown in fig. 4(f), but the same is used for both symbol times, which in the example shown in fig. 4(f) is a length of N pilot signals can be placed on each MAR_sub。

It can be seen that after the placement of the pilot signal on each MAR is determined, the length of the pilot signal 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 may use the number of MARs in the bundled MARs to determine the length of the first pilot signal, as described in the previous embodiment.

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

Considering that retransmission of bundled MARs by HARQ techniques can further increase transmission reliability, in some embodiments of the present invention, in combination with HARQ techniques, the terminal may specifically determine the total pilot signal length according to the number of MARs in a bundled MAR and the number of retransmissions. The number of MARs in the bundled MARs and the number of retransmissions may be either standard defined or pre-configured.

Specifically, fig. 5(a), fig. 5(b), and fig. 5(c) respectively show diagrams of determining the length of the total pilot signal by the terminal in some embodiments of the present invention.

As shown in fig. 5(a), each MAR of a 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 case, the total pilot signal length is the length L of the pilot signal placed on each MAR_MARAnd the number of MARs in the bundled MARs, N.

As shown in fig. 5(b), each MAR of 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. At this pointIn an exemplary scenario, the total pilot signal length is the length L of the pilot signal placed on each MAR_MARNumber of MARs in bundled MARs N and number of retransmissions N_HARQThe product of (a).

As shown in fig. 5(c), each MAR of a MAR bundle uses a different pilot signal, and different MAR bundle sizes and different pilot signals are used for initial transmission and retransmission. In this example case, the total pilot signal length is the length L of the pilot signal placed on each MAR_MARSum of Σ N with the number of MARs in the MARs bundled per transmission_iThe product of (a).

Specifically, in some embodiments of the present invention, after determining the length of the first pilot signal, the terminal may perform the acquisition of the first pilot signal with the length as described in step 202. The acquired first pilot signal may specifically be 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 determine, according to the acquired first pilot signal, the N second pilot signals by, but not limited to, the following manners:

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

and 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.

Since the terminal divides the sequence characteristics of the first pilot signals to obtain N second pilot signals, the N second pilot signals placed on the bundled N MARs also have the sequence characteristics, and the network device can perform progressive terminal detection based on the sequence characteristics.

Specifically, for example, based on the example case shown in fig. 5(a) above, the total pilot signal length is the pilot signal placed on each MARLength L_MARAnd the number N of MARs in the bundled MARs, fig. 6(a) and 6(b) show diagrams of the terminal determining N second pilot signals, respectively, in some embodiments of the present invention. In the example shown in fig. 6(a) and 6(b), the same pilot signal is placed on the bundled MAR for initial transmission and retransmission:

as shown in fig. 6(a), the terminal may sequentially divide the acquired total pilot signal into N total pilot signals of length L_MARThe pilot packet of (corresponding to the first pilot signal being split into N second pilot signals), and the N pilot packets may be placed in turn on each MAR in the bundled MARs;

as shown in fig. 6(b), the terminal may interleave the acquired total pilot signals, and sequentially divide the interleaved total pilot signals into N total pilot signals with length L_MARThe interleaved first pilot signal is split into N second pilot signals, and the N pilot packets may be placed in sequence 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, or the like. The RM sequence generated based on the Delstar-Goethals set has a nested characteristic, so that the short pilot frequency is combined to generate the long pilot frequency by jointly utilizing the bound MAR and the pilot frequency resource during retransmission, and the long pilot frequency also conforms to the definition of the RM sequence, so that network equipment can perform progressive detection.

The following describes the procedure of acquiring the total pilot signal by the terminal in some embodiments of the present invention, taking the RM sequence-based generation of the total pilot signal as an example:

the length of the total pilot signal needs to be determined first. Referring to the foregoing embodiment, if the placement of the pilot signal on each MAR is determined, the pilot length L on each MAR_MARIt was then determined that the following three cases were considered:

1. the terminal does not use the bundled MAR for transmission, and the retransmission times N_HARQDetermination of weightDifferent pilot signals are used, so that the total pilot signal length is L_MAR×N_HARQ；

2. The terminals transmit using the bundled MAR without regard to retransmissions, and thus the total pilot signal length is L_MAR×N_MAR；

3. The terminal uses the bundled MARs for transmission, each MAR in the bundled MARs uses different pilot signals, the same MAR bundling size NMAR and different pilot signals are used during retransmission, and the total pilot length is L_MAR×N_MAR×N_HARQ。

After determining the length of the total pilot signal, the length of the original RM sequence is 2^mAnd m is a positive integer, so that the RM sequence needs to be reasonably segmented according to the actually required pilot sequence length and transmission mode to form a corresponding short sequence.

The method of segmenting the RM sequence is explained by taking the above case 1 as an example.

Total pilot sequence length of L_MAR×N_HARQThe desired RM sequence is 2 in length^mThe value of m is determined by a specific segmentation method. The segmentation method includes, but is not limited to, the following two ways:

the segmentation method 1: equal interval segmentation method

Will 2^mEqual division of long RM sequences into N_HARQA segment wherein m is 2^m<L_MAR×N_HARQThe maximum value of m. The obtained N_HARQRespectively making short sequences as L_MARFast Fourier Transform (FFT) of the point number to obtain N_HARQSegment L_MARShort sequences of length, used for initial transmission and retransmission in turn, form a total length of L_MAR×N_HARQThe pilot frequency of (2);

the segmentation method 2 comprises the following steps: unequal interval segmentation method

Using powers of 2The equal-length segmentation method is to segment the long sequence into segments with the length of N of (A)_HARQA short sequence. The first segment is used for initial transmission and the following segments are used for retransmission in turn. Such as with N_HARQThe description is given for 2 and 4, respectively:

when N is present_HARQWhen 2, the sequence order is divided into 2 length^m-1And 2^m-1Wherein the first segment is used for initial transmission and the second segment is used for retransmission. During retransmission, the first section of short pilot frequency and the second section of short pilot frequency can be combined into a long pilot frequency sequence for user detection. Because the RM sequence has the nested property, the short sequence and the long sequence both accord with the definition of the RM sequence, and the combined long sequence enhances the detection performance of a user. When N is present_HARQWhen 4, the sequence order is divided into length 2^m-3，2^m-3，2^m-2And 2^m-1The first section is used for initial transmission, the last three sections are used for retransmission, and each retransmission can be combined with the previously transmitted short sequence to form longer RM sequence enhanced detection.

The determination of the value of m needs to satisfy the condition that the length of the longest segment in the segmented short sequence needs to be less than L_MARI.e. find satisfy 2^m-1<L_MARThe maximum value of m. Then, L is made for each segmented short sequence_MARFFT of length point number, total length L_MAR×N_HARQThe pilot of (2).

For the cases 2 and 3, a pilot frequency sequence can be generated by adopting a similar method, unequal length segmentation is carried out to form a short pilot frequency for initial transmission and retransmission, and the progressive detection is realized by utilizing the sequence characteristics.

In some embodiments of the present invention, after the terminal places the first pilot signal on the bundled MAR through step 202, the bundled MAR on which the first pilot signal is placed may be transmitted as described in step 203.

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

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

Further, the terminal may also place the transmission content in various ways, i.e. the bundled MAR may occupy the time-frequency resources in various ways. For example, taking the 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 schematic diagrams of the terminal placing transmission content in time-frequency resources in some embodiments of the present invention:

as shown in fig. 8(a), the UE2 may place information to be transmitted on the same frequency domain, time-consecutive MARs;

as shown in fig. 8(b), the UE2 may place information to be transmitted on MAR with the same frequency domain and discontinuous time;

as shown in fig. 8(c), the UE2 may place information to be transmitted on MAR's that are contiguous in frequency domain and have the same time;

as shown in fig. 8(d), the UE2 may place information to be transmitted on the MAR with frequency domain discontinuity and time identity;

as shown in fig. 8(e), the UE2 may place information to be transmitted on different frequency domain, time-consecutive MARs;

as shown in fig. 8(f), the UE2 may place information to be transmitted on MAR that is not identical in frequency domain and discontinuous in time.

Specifically, in some embodiments of the present invention, to simplify the complexity of the network device performing terminal detection according to the pilot signal on the bundled MAR, at the terminal side, the time-frequency resource position occupied by the bundled MAR may be selected from a set of time-frequency resource positions configured in advance and corresponding to the number N of the MAR in the bundled MAR.

Through the embodiment of the invention, the terminal can jointly utilize the pilot frequency resource on the bundled MAR and further utilize the pilot frequency resource during retransmission, thereby achieving the effect of using longer pilot frequency signals in a phase-changing manner, further enabling network equipment to realize progressive terminal detection and improving the performance of terminal detection.

It can be seen that the scheme for uplink transmission provided by the embodiment of the present invention mainly utilizes the bundled MAR in a phase-change manner, so that the network device has progressive detection performance, thereby enhancing the terminal detection performance of the unlicensed access system. The terminal can determine the length of the long pilot signal (the first pilot signal) by bundling the size of the MAR and further by retransmission times, and the long pilot signal can generate the short pilot signal (the second pilot signal) by methods of truncation, interleaving, truncation and the like, so that the network device can combine the short pilot signals into the long pilot signal one by one and then perform terminal detection, and the longer length of the pilot signal enhances the detection performance of a user and can provide more pilot signals.

Fig. 9 is a flowchart of a method for uplink transmission according to 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 to execute the process shown in fig. 9, and the functional modules to execute the process may be implemented by hardware, software programming, or a combination of hardware and software.

As shown in fig. 9, the process includes the following steps:

step 901: 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;

step 902: the network device detects the terminal based on the first pilot signal placed on the bundled MAR.

Specifically, N second pilot signals are respectively placed on N MARs in the bundled MARs, the N second pilot signals are determined by the terminal according to the first pilot signal, and the length of the second pilot signal is smaller 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 the terminal dividing the first pilot signals into N according to the sequence characteristics of the first pilot signals; alternatively, the N second pilot signals may be obtained by interleaving the first pilot signal by the terminal and dividing the interleaved first pilot signal into N according to the sequence characteristic of the first pilot signal.

In some embodiments of the present invention, the length of the first pilot signal may be the product of the determined number N multiplied by the length of each MAR over which the pilot signal can be placed.

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 and the size of each MAR.

Specifically, for the processes of determining the length of the first pilot signal, acquiring the first pilot signal, and determining the second pilot signal by the terminal in some embodiments of the present invention, reference may be specifically made to a method flow example described at the terminal side in the foregoing embodiments of the present invention, and details of the method flow example will not be repeated herein.

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

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

Specifically, the network device may try the number of MARs in all possible bundled MARs one by one and perform the progressive detection procedure described above in each attempt until a terminal is detected or the detection is complete.

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

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

For example, based on the example shown in fig. 7 that N bundled MARs occupy time-frequency resources in some embodiments of the present invention, assuming that the network device determines the number of MARs in a bundled MAR, the starting position of the occupied time-frequency resources, and the positions of the time-frequency resources occupied by each MAR in the bundled MARs (e.g., the network device determines the possible transmission positions of the terminals (UE1, UE2, and UE3) through protocol or semi-static scheduling), in slot 1, the network device may obtain a pilot signal (i.e., a second pilot signal placed on the resource block 11) on the resource block 11, and detect whether the UE2 exists according to the obtained pilot signal; in slot 2, the network device may acquire a pilot signal in the resource block 22, detect UE1 according to the acquired pilot signal, combine the pilot signals on the resource blocks 31 and 32, and detect UE3 according to the combined pilot signal; in slot 3, the network device may acquire a pilot signal in the resource block 33, detect UE3 according to the acquired pilot signal, combine the pilot signals on the resource blocks 31,32,33, and detect UE3 according to the combined pilot signal; in slot 4, the network device may combine the pilot signals on resource blocks 31,32,33,34 and detect the UE3 based on the combined pilot signals.

For another example, assume that the network device determines the number of MARs in a bundled MAR and the location of the time-frequency resource occupied by each MAR in the bundled MAR, and does not determine the starting location of the time-frequency resource occupied by the MAR in the bundled MAR. Still based on the example shown in fig. 7 that 2 MARs bundled in the UE1 occupy time-frequency resources, fig. 10 shows a schematic diagram of a network device detecting a terminal in some embodiments of the present invention. Wherein, the number of MAR in the bundled MAR of the UE1 is 2, and the position is in the frequency band 2 at the time slot t, where the time slot t +1 is in the frequency band 1:

in the time slot t, the network device detects the terminal on the time-frequency resource 21, and there are three situations:

(1) correct detection and correct decoding: because the decoding is correct, the network equipment can not detect the time-frequency resource 12 in the time slot t + 1;

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

(3) and (3) detecting errors: because the network device does not know that the UE1 has transmitted due to the detection error, the network device first detects the terminal in the time-frequency resource 22 at the time slot t +1, and then the network device combines the pilot signals in the time-frequency resources 12 and 21 for joint detection, at this time, the UE1 that has not been detected for the first time has a higher detection probability because the pilot signals become longer.

Specifically, the specific implementation process of the network device detecting the terminal according to the first pilot signal placed on the bundled MAR may be adaptively adjusted according to the first pilot signal generated by the terminal and the manner in which the terminal places the first pilot signal on the bundled MAR, and the specific implementation manner may be obtained according to the method embodiment at the terminal side described in the foregoing embodiment of the present invention and the method embodiment at the network device side described in the foregoing embodiment of the present invention, which will not be described herein again.

In summary, in the technical solution for uplink transmission provided in the foregoing embodiments of the present invention, the terminal may jointly design the pilot signal used in the MAR bundling, and further jointly design the pilot signal used in the initial transmission, the retransmission and the MAR bundling, so that the network device side may perform joint detection on the pilot signals used in the initial transmission, the retransmission and the MAR bundling, thereby enhancing the terminal detection performance.

For a communication system using the authorization-free transmission, the technical scheme provided by the embodiment of the invention can make up for the defect that no better technical scheme for enhancing the terminal detection signal exists at present, and provides the transmission reliability.

Specifically, for example, mass Machine-Type Communication (mtc) is an important application scenario of the well-known fifth Generation mobile Communication technology (5th Generation, 5G), and the scenario is typically characterized by large connection, that is, the number of terminals is large, the service Type mainly includes a small packet service, and there is a certain requirement for low latency. In this scenario, the unlicensed transmission is considered to be a more suitable uplink data transmission method than the licensed transmission. Therefore, the technical scheme for uplink transmission provided by the embodiment of the invention can increase the performance of terminal detection of the network equipment in the scene, and achieve the effect of improving the transmission reliability.

Low-Latency high-reliability Communication (URLLC) is also an important application scene of 5G. For some services such as car networking, unmanned driving, industrial control, etc., system capacity is not a major issue, but there are high requirements for delay and reliability. In such a scenario, the unlicensed transmission is considered to be a more suitable uplink data transmission method than the licensed transmission. Compared with the authorization transmission scheme of base station scheduling, the authorization-free transmission does not need to pass the processes of sending an uplink scheduling request and waiting for receiving the authorization of the base station, thereby greatly shortening the transmission delay and meeting the requirement of the URLLC scene on the aspect of the delay. Therefore, the technical scheme for uplink transmission provided by the embodiment of the invention can increase the performance of terminal detection of the network equipment in the scene, and achieve the effect of improving the transmission reliability.

Based on the same inventive concept, the present application further provides an apparatus for uplink transmission, which may be implemented by hardware, software or a combination of hardware and software, and may be a terminal, such as the terminal 102 in the communication system shown in fig. 1.

Fig. 11 is a schematic structural diagram of an apparatus for uplink transmission according to some embodiments of the present invention. As shown in fig. 11, the apparatus includes:

a determining module 1101, 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 placing module 1102 configured to obtain a first pilot signal having 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 configured to:

In some embodiments of the present invention, the determining module 1101 may be specifically configured to:

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

In some embodiments of the present invention, the time-frequency resource locations occupied by the bundled MARs are selected from a set of time-frequency resource locations that is pre-configured and corresponds to the number N of the MARs.

Specifically, since the apparatus provided in the above embodiment of the present invention is similar to the principle of the method embodiment of the terminal side provided in the foregoing embodiment of the present invention for solving the problem, the specific implementation of the apparatus provided in the above embodiment of the present invention and the implementation of the method of the terminal side provided in the foregoing embodiment of the present invention can be referred to each other, and repeated details are not repeated.

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

Fig. 12 is a schematic structural diagram of an apparatus for uplink transmission according to some embodiments of the present invention. As shown in fig. 12, the apparatus includes:

a receiving module 1201, 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 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 detecting module 1202, 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, where the second pilot signals are determined by the terminal according to the first pilot signals, and the length of the second pilot signals is smaller than or equal to the length of the first pilot signals.

In some embodiments of the present invention, the detecting module 1202 is specifically configured to:

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

In some embodiments of the invention, the length of the first pilot signal is the product of the determined number N multiplied by the length over which a pilot signal can be placed at each MAR by the terminal.

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

Specifically, since the apparatus provided in the foregoing embodiment of the present invention is similar to the principle of the method embodiment of the network device side provided in the foregoing embodiment of the present invention for solving the problem, the specific implementation and beneficial effects of the apparatus provided in the foregoing embodiment of the present invention can be mutually referred to with the implementation and beneficial effects of the method of the network device side provided in the foregoing embodiment of the present invention, and repeated details are not repeated.

The division of the modules in the embodiments of the present application is schematic, and only one logical function division is provided, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present application may be integrated in one processor, may also exist alone physically, or may also be integrated in one module by two or more modules. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

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

As shown in fig. 13, the terminal 1300 can include a processor 1302. The processor 1302 may be a Central Processing Unit (CPU), a digital processing module, or the like. The terminal 1300 may also include a communication interface 1301, and the processor 1302 transmits the bundled MAR through the communication interface 1301. The terminal 1300 further includes: and a memory 1303 for storing programs executed by the processor 1302. The memory 1303 may be a nonvolatile memory such as a hard disk (HDD) or a solid-state drive (SSD), and may also be a volatile memory such as a random-access memory (RAM). Memory 1303 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 1302, but is not limited to such.

The processor 1302 is configured to execute the program codes stored in the memory 1303, and is specifically configured to execute the method on the terminal side provided in the foregoing embodiment of the present invention. This application is not described in detail herein.

In the embodiment of the present application, a specific connection medium among the communication interface 1301, the processor 1302, and the memory 1303 is not limited. In the embodiment of the present application, the memory 1303, the processor 1302, and the communication interface 1301 are connected through a bus 1304 in fig. 13, the bus is represented by a thick line in fig. 13, and the connection manner between other components is merely an illustrative description and is not limited thereto. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 13, but this is not intended to represent only one bus or type of bus.

The embodiment of the present invention further provides a readable storage medium, which is used for storing software instructions required to be executed for executing the processor, and includes a program required to be executed for executing the processor.

Based on the same inventive concept, the application also provides network equipment. Fig. 14 illustrates a schematic structural diagram of a network device provided by some embodiments of the 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, etc. The network device 1400 may also include a communication interface 1401 through which the processor 1402 receives bundled MARs. 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, and may also be 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 to such.

The processor 1402 is configured to execute the program codes stored in the memory 1403, and is specifically configured to execute the method on the network device side provided by the foregoing embodiment of the present invention. This application is not described in detail herein.

The specific connection medium among the communication interface 1401, the processor 1402 and the memory 1403 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 1403, the processor 1402, and the communication interface 1401 are connected by the bus 1404 in fig. 14, the bus is represented by a thick line in fig. 14, and the connection manner between other components is merely illustrative and not limited. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 14, but this is not intended to represent only one bus or type of bus.

As will be appreciated by one skilled in the art, 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 available 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 application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by program instructions. These program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These program instructions may also be stored in a readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a corresponding apparatus implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such 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 intended to include such modifications and variations as well.

Claims

1. A method for uplink transmission, characterized in that the method comprises:

The terminal determines the number N of MARs in the bundled multi-access resource MAR, 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 acquires a first pilot signal with the length, and places the first pilot signal on the bundled MAR;

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

2. The method according to claim 1, wherein the terminal places the first pilot signal on the bundled MAR, comprising:

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

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

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

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

4. The method according to any one of claims 1-3, wherein the terminal determines the length of the first pilot signal according to the determined number N, comprising:

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.

5. The method according to claim 4, wherein 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.

6. The method according to any one of claims 1-5, wherein the time-frequency resource positions occupied by the bundled MARs are between the pre-configured time-frequency resource positions corresponding to the number N of the MARs Select from the collection.

7. A method for uplink transmission, characterized in that the method comprises:

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.

8. The method according to claim 7, wherein N MARs in the bundled MARs are respectively placed with N second pilot signals, and the second pilot signals are set by the terminal according to the determined by the first pilot signal, the length of the second pilot signal is less than or equal to the length of the first pilot signal.

9. The method according to claim 8, wherein the network device detects the terminal according to the first pilot signal placed on the bundled MAR, comprising:

The network device acquires the second pilot signals placed on each MAR in the bundled MARs, and each time a second pilot signal is acquired, after combining all the currently acquired second pilot signals, it detects the terminal.

10. The method according to claim 9, wherein the network device obtaining the second pilot signal placed on each MAR in the bundled MARs comprises:

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

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

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

The N second pilot signals interleave the first pilot signals for the terminal, and divide the interleaved first pilot signals into N according to the sequence characteristics of the first pilot signals got it.

12. The method according to any one of claims 7-11, wherein the length of the first pilot signal is the number N determined by the terminal and the number N that can be placed on each MAR. The product obtained by multiplying the lengths of .

13. The method according to claim 12, wherein 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.

14. The method according to any one of claims 7-13, wherein after the network device receives the bundled MAR transmitted by the terminal, it further comprises: the network device occupies the Determine the number N of MARs in the bundled MARs.

15. A device for uplink transmission, characterized in that the device is a terminal, and the device comprises:

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 placement module, configured to acquire 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 in which the first pilot signal is placed.

16. The device according to claim 15, wherein the placement module is specifically used for:

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

Place the N second pilot signals on N MARs in the bundled MARs respectively.

17. The device according to claim 16, wherein the placing module is specifically used for:

According to the sequence characteristics of the first pilot signal, divide the first pilot signal into N second pilot signals; or, perform interleaving on the first pilot signal, and according to the first pilot signal dividing the interleaved first pilot signal into N second pilot signals according to the sequence characteristic of the frequency signal.

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

Calculate the product of the number N and the length of the pilot signal that can be placed on each MAR, and determine the product as the length of the first pilot signal.

19. The apparatus according to claim 18, wherein 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.

20. The device according to any one of claims 15-19, wherein the time-frequency resource positions occupied by the bundled MARs are within the range of the pre-configured time-frequency resource positions corresponding to the number N of the MARs Select from the collection.

21. A device for uplink transmission, characterized in that the device is a network device, and the device comprises:

The receiving module is configured to receive the bundled MAR transmitted by the terminal, the bundled MAR is placed with a first pilot signal; 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, determined according to the determined number N, N is an integer greater than 1;

22. The device according to claim 21, wherein N MARs in the bundled MARs are respectively placed with N second pilot signals, and the second pilot signals are generated by the terminal according to the determined by the first pilot signal, the length of the second pilot signal is less than or equal to the length of the first pilot signal.

23. The device according to claim 22, wherein the detection module is specifically used for:

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

24. The device according to claim 23, wherein the detection module is specifically used for:

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

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

25. The device according to any one of claims 22-24, wherein the N second pilot signals are divided by the terminal according to the sequence characteristics of the first pilot signal A pilot signal is obtained for N; or,

26. The device according to any one of claims 21-25, wherein the length of the first pilot signal is the number N determined by the terminal and the number N that can be placed on each MAR. The product obtained by multiplying the lengths of .

27. The apparatus according to claim 26, wherein 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.

28. The device according to any one of claims 21-27, wherein the detection module is specifically used for:

After receiving the bundled MAR transmitted by the terminal, the receiving module determines the number N of MARs in the bundled MAR according to the frequency resource position occupied by the received bundled MAR.