WO2016206083A1

WO2016206083A1 - Method and apparatus for uplink data transmission

Info

Publication number: WO2016206083A1
Application number: PCT/CN2015/082481
Authority: WO
Inventors: 韩玮; 毕晓艳; 陈大庚
Original assignee: 华为技术有限公司
Priority date: 2015-06-26
Filing date: 2015-06-26
Publication date: 2016-12-29
Also published as: CN107736049A; CN107736049B

Abstract

The embodiments of the present invention provide a method and apparatus for uplink data transmission, said method comprising: determining that a terminal device is capable of performing hybrid automatic repeat request (HARQ) transmission, the initial transmission that corresponds to said HARQ transmission being grant-free transmission; determining the indication information associated with the transmission resource used by the terminal device for performing HARQ transmission; sending a first message, said first message comprising said indication information. Hence, when the terminal device is capable of performing HARQ transmission, the transmission resource for performing HARQ transmission may be determined according to the indication information; therefore data transmission reliability is improved and system resource overhead is reduced.

Description

Method and device for uplink data transmission

Technical field

The present invention relates to the field of communications and, more particularly, to a method and apparatus for uplink data transmission.

Background technique

In a typical wireless communication network (for example, Long Term Evolution (LTE) network), the selection of the uplink data sharing channels (Shared Data Channels) is based on the scheduling/granting mechanism and is completely affected by the base station ( The base station (referred to as "BS") is controlled. In this mechanism, the user equipment (User Equipment, referred to as "UE") first sends an uplink scheduling request to the BS. When the BS receives the request, it sends an uplink Grant to the UE. Notifying the uplink transmission resource allocated to the UE. The UE performs data transmission on the granted uplink transmission resource accordingly.

Large-scale user access is one of the typical application scenarios for next-generation communication networks. When a large number of users access, if the above-mentioned Scheduling/Grant mechanism is used, on the one hand, it will cause huge signaling transmission overhead and scheduling pressure of BS resource allocation, and on the other hand, it will cause significant transmission delay. In view of this, the next-generation communication network will adopt the Grant Free transmission mode to support massive user access. In the Grant Free transmission mode, the BS delimits the access area of the Contention Transmission Unit (CTU) in the uplink transmission resource. The UE accesses the uplink transmission resource in a competitive manner in the area without following the Scheduling/Grant mechanism.

In order to successfully perform Grant Free uplink transmission, the UE should first determine the CTU resources of the uplink transmission. Determining the CTU resources may be based on predetermined UE-CTU mapping rules known to both the UE and the BS. The mapping rule can be foreseen by the UE in an implicit manner such as standard specification or firmware implementation. It can also be notified by the BS through explicit high-level signaling. For example, different mapping rules may be first defined in the standard, and then the BS notifies the UE by signaling the sequence number of the corresponding mapping rule.

Different UEs are allowed to use the same signature to perform uplink access transmission. When multiple UEs use the same Signature to simultaneously access the same time-frequency resource (that is, the same time-frequency-code resource), a collision occurs, and a corresponding advanced detection method is needed to solve the problem. When multiple UEs using the same time-frequency-code resource further use the same pilot, the collision is generally considered to be impossible to solve by the detection method alone. This situation needs to be combined with special conflict avoidance or resolution mechanisms, such as remapping, retransmission, and so on. To reduce collisions on specific UEs or specific CTUs, some UEs can be remapped Go to the new CTU resources.

The Grant Free transmission of the above-mentioned massive user access, because allowing multiple UEs to compete for transmission on the same CTU resource, will lead to contention conflict and reduce the reliability of Grant Free transmission. In order to ensure low latency and high reliability Grant Free transmission, it is necessary to provide additional transmission guarantee for some UEs with special service requirements.

Therefore, how to improve the reliability of data transmission and save system resource overhead is an urgent problem to be solved.

Summary of the invention

The present invention provides a method and apparatus for uplink data transmission, which can improve the reliability of data transmission and save system resource overhead.

In a first aspect, a method for uplink data transmission is provided, which is performed by a network device, the method comprising: determining that a terminal device is capable of performing hybrid automatic repeat request (HARQ) transmission, and the initial transmission corresponding to the HARQ transmission is an unauthorized license. Transmitting; determining indication information related to the transmission resource used by the terminal device to perform HARQ transmission; sending a first message, where the first message includes the indication information.

A second aspect provides a method for uplink data transmission, which is performed by a terminal device, the method comprising: receiving a first message, where the first message includes a transmission resource used by the terminal device to perform HARQ transmission. The indication information that the initial transmission corresponding to the HARQ transmission is an unlicensed transmission; when the HARQ transmission is enabled, the HARQ transmission is performed according to the indication information included in the first message.

The third aspect provides an apparatus for uplink data transmission, including: a first determining module, configured to determine that the terminal device is capable of performing hybrid automatic repeat request (HARQ) transmission, where the initial transmission corresponding to the HARQ transmission is an unauthorized transmission; The determining module is configured to determine the indication information related to the transmission resource used by the terminal device to perform the HARQ transmission, and the sending module is configured to send the first message, where the first message includes the indication information determined by the second determining module.

The fourth aspect provides an apparatus for uplink data transmission, including: a receiving module, configured to receive a first message, where the first message includes indication information related to a transmission resource used by the apparatus for performing HARQ transmission, and the HARQ transmission The corresponding initial transmission is an unlicensed transmission; the sending module is configured to perform HARQ transmission according to the indication information included in the first message received by the receiving module when the HARQ transmission is enabled.

Based on the foregoing technical features, the method and device for uplink data transmission provided by the embodiment of the present invention, the network device determines that the terminal device can perform hybrid automatic repeat request (HARQ) transmission, and the initial transmission corresponding to the HARQ transmission is an unauthorized transmission; After the terminal device is configured to perform indication information related to the transmission resource of the HARQ transmission, the terminal device sends a first message including the indication information to the terminal device. Therefore, when the terminal device is capable of performing HARQ transmission, the transmission resource for performing HARQ transmission can be determined according to the indication information, thereby improving the reliability of data transmission and reducing system resource overhead.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, other drawings may be obtained from those skilled in the art without any inventive labor.

1 is a schematic structural diagram of a communication system to which an embodiment of the present invention is applied;

2 is a schematic flowchart of a method for uplink data transmission according to an embodiment of the present invention;

FIG. 3 is another schematic flowchart of a method for uplink data transmission according to an embodiment of the present invention; FIG.

4 is a schematic diagram of a method for dividing a HARQ transmission exclusive area according to an embodiment of the present invention;

FIG. 5 is a mapping relationship between a terminal device and a CTU when performing initial transmission and HARQ transmission according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a mapping relationship between a terminal device and a CTU according to another embodiment of the present invention; FIG.

FIG. 7 is a schematic flowchart of a method for uplink data transmission according to another embodiment of the present invention; FIG.

FIG. 8 is a schematic flowchart of a method for uplink data transmission according to still another embodiment of the present invention; FIG.

FIG. 9 is a schematic flowchart of a method for uplink data transmission according to still another embodiment of the present invention; FIG.

FIG. 10 is another schematic flowchart of a method for uplink data transmission according to still another embodiment of the present invention; FIG.

FIG. 11 is a schematic flowchart of a method for uplink data transmission according to still another embodiment of the present invention; FIG.

FIG. 12 is a schematic block diagram of an apparatus for uplink data transmission according to an embodiment of the present invention; FIG.

FIG. 13 is another schematic block diagram of an apparatus for uplink data transmission according to an embodiment of the present invention; FIG.

FIG. 14 is a schematic block diagram of an apparatus for uplink data transmission according to another embodiment of the present invention; FIG.

FIG. 15 is a schematic block diagram of an apparatus for uplink data transmission according to still another embodiment of the present invention; FIG.

16 is a schematic block diagram of an apparatus for uplink data transmission according to still another embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

The terms "component," "module," "system," and the like, as used in this specification, are used to mean a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside within a process and/or execution thread, and the components can be located on one computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on signals having one or more data packets (eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems) Communicate through local and/or remote processes.

The solution of the embodiment of the present invention can be applied to an existing cellular communication system, such as Global System for Mobile Communication (GSM), and Wideband Code Division Multiple Access (WCDMA). In the system of Long Term Evolution (LTE), the supported communication is mainly for voice and data communication. In general, a traditional base station supports a limited number of connections and is easy to implement.

The next-generation mobile communication system will support not only traditional communication, but also machine-to-machine (M2M) communication, or Machine Type Communication (MTC) communication. According to forecasts, by 2020, the number of MTC devices connected to the network will reach 500 to 100 billion, which will far exceed the current number of connections. For M2M services, due to the wide variety of services, there is a big difference in network requirements. In general, there are several needs:

Reliable transmission, but not sensitive to delay;

Low latency, high reliability transmission.

For reliable transmission, and for delay-insensitive services, it is easier to handle. However, for low latency, high A reliable transmission type of service requires not only a short transmission time but also a reliable one, such as a vehicle to vehicle (V2V) service. If the transmission is unreliable, it will cause retransmission and the transmission delay will be too large to meet the requirements.

Due to the existence of a large number of connections, there is a big difference between future wireless communication systems and existing communication systems. A large number of connections require more resources to access the terminal device and need to consume more resources for the transmission of scheduling signaling related to the data transmission of the terminal device. The solution according to the embodiment of the present invention can effectively solve the above resource consumption problem.

Optionally, the network device is a base station, and the terminal device is a user equipment.

The present invention describes various embodiments in connection with a terminal device. A terminal device may also be referred to as a user equipment (User Equipment, abbreviated as "UE") user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, and a terminal. , a wireless communication device, a user agent, or a user device. The terminal device may be a station (Station, simply referred to as "ST") in a Wireless Local Area Networks ("WLAN"), and may be a cellular phone, a cordless phone, or a Session Initiation Protocol (Session Initiation Protocol). SIP") telephone, Wireless Local Loop ("WLL") station, Personal Digital Assistant ("PDA"), handheld device with wireless communication capabilities, computing device or connected to Other processing devices for wireless modems, in-vehicle devices, wearable devices, and terminal devices in future 5G networks.

Moreover, the present invention describes various embodiments in connection with a network device. The network device may be a device for communicating with the mobile device, such as a network device, and the network device may be an Access Point (AP) in the WLAN, and Code Division Multiple Access (referred to as “Code Division Multiple Access”). A base station (Base Transceiver Station, abbreviated as "BTS") in GSM or "CDMA", or a base station (NodeB, abbreviated as "NB") in WCDMA, or a Long Term Evolution (Long Term Evolution) It is an Evolution Base Node B ("eNB" or "eNodeB") in "LTE"), or a relay station or an access point, or an in-vehicle device, a wearable device, and a network device in a future 5G network.

Furthermore, various aspects or features of the present invention can be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, a computer readable medium can include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), an optical disk (eg, a compact disk ("CD"), a digital versatile disk (Digital Versatile) Disk, referred to as "DVD"), etc., smart cards and flash memory devices (for example, Erasable Programmable Read-Only Memory ("EPROM"), cards, sticks or key drivers, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, without limitation, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.

FIG. 1 shows a schematic architectural diagram of a communication system to which an embodiment of the present invention is applied. As shown in FIG. 1, the communication system 100 can include a network device 102 and terminal devices 104-114 (referred to as UEs in the figure) connected by a wireless connection or a wired connection or other means.

The communication system 100 may refer to a Public Land Mobile Network (PLMN) or a D2D network or an M2M network or other network. FIG. 1 is only a simplified schematic diagram of an example, and other network devices may be included in the communication system. , not shown in Figure 1.

In order to solve a large number of MTC-type services in the future network, and to meet low-latency, highly reliable service transmission, this patent proposes a scheme for unauthorized transmission. Unauthorized transmission of English can be expressed as Grant Free. The exemption here can be targeted for uplink data transmission. An unauthorized transfer can be understood as any of the following meanings, or multiple meanings, or a combination of some of the various technical meanings, or other similar meanings:

1. The unlicensed transmission may be: the network device pre-allocates and informs the terminal device of multiple transmission resources; when the terminal device has the uplink data transmission requirement, select at least one transmission resource from the plurality of transmission resources pre-allocated by the network device, and use the selected one. The transmission resource sends the uplink data; the network device detects the uplink data sent by the terminal device on one or more of the pre-assigned multiple transmission resources. The detection may be blind detection, or may be performed according to one of the control domains in the uplink data, or may be detected in other manners.

2. The unlicensed transmission may be: the network device pre-allocates and informs the terminal device of multiple transmission resources, so that when the terminal device has an uplink data transmission requirement, at least one transmission resource is selected from a plurality of transmission resources pre-allocated by the network device, and used. The selected transmission resource sends uplink data.

3. The unlicensed transmission may be: acquiring information of a plurality of pre-assigned transmission resources, selecting at least one transmission resource from the plurality of transmission resources when the uplink data transmission request is required, and transmitting the uplink data by using the selected transmission resource. . The method of obtaining can be obtained from a network device.

4. The unlicensed transmission may refer to a method for realizing uplink data transmission of the terminal device without dynamic scheduling of the network device, and the dynamic scheduling may refer to the network device being the terminal device each time. The data transmission of the line indicates a scheduling mode of the transmission resource by signaling. Optionally, implementing uplink data transmission of the terminal device may be understood as allowing data of two or more terminal devices to perform uplink data transmission on the same time-frequency resource. Optionally, the transmission resource may be one or more transmission time units of transmission resources after the time when the UE receives the signaling. A transmission time unit may refer to a minimum time unit for one transmission, such as a Transmission Time Interval ("TTI"), the value may be 1 ms, or may be a preset transmission time unit.

5. Unauthorized transmission may refer to: the terminal device performs uplink data transmission without requiring network device authorization. The authorization may be performed by the terminal device sending an uplink scheduling request to the network device. After receiving the scheduling request, the network device sends an uplink grant to the terminal device, where the uplink grant indicates the uplink transmission resource allocated to the terminal device.

6. The unlicensed transmission may be a competitive transmission mode. Specifically, multiple terminals may simultaneously perform uplink data transmission on the same time-frequency resources allocated in advance, without requiring the base station to perform authorization.

The data may be included in service data or signaling data.

The blind detection can be understood as the detection of data that may arrive without predicting whether or not data has arrived. The blind detection can also be understood as detection without explicit signaling indication. The transmission resource may include, but is not limited to, a combination of one or more of the following resources:

- time domain resources such as radio frames, subframes, symbols, etc.;

- frequency domain resources, such as subcarriers, resource blocks, etc.;

- airspace resources such as transmit antennas, beams, etc.;

- Code domain resources, such as Sparse Code Multiple Access ("SCMA") codebook, Low Density Signature (LDS) serial number, CDMA code, etc.;

- Uplink pilot resources.

The above transmission resources may be transmitted according to a control mechanism including, but not limited to, the following:

- uplink power control, such as uplink transmit power upper limit control, etc.

- Modulation coding mode setting, such as transmission block size, code rate, modulation order setting, etc.;

- Retransmission mechanisms, such as the HARQ mechanism.

The above transmission resources may be further divided into one or more Contention Transmission Units ("CTUs"). CTU can be the basic transmission of unlicensed transmission source. A CTU may refer to a transmission resource combining time, frequency, and code domain, or may refer to a transmission resource combining time, frequency, and pilot, or may refer to a transmission resource combining time, frequency, code domain, and pilot. The access area of the CTU may refer to a time-frequency area for unauthorized transmission.

Patent No. PCT/CN2014/073084, the patent application entitled "System and Method for Uplink Grant-free Transmission Scheme", provides a technical solution for uplink grant-free transmission. The PCT/CN2014/073084 application describes that radio resources can be divided into various CTUs, and the UE is mapped to a certain CTU. Each CTU may be assigned a set of codes, and the assigned set of codes may be a set of CDMA codes, or may be an SCMA codebook set or an LDS group or a signature group. Each code can correspond to a set of pilots. The user can select a code and one of the pilot groups corresponding to the code for uplink transmission. The content of the PCT/CN2014/073084 application is also to be understood as a part of the content of the embodiments of the present invention, and is not described again.

FIG. 2 shows a schematic flow chart of a method for uplink data transmission according to an embodiment of the present invention. The method is performed by a network device, as shown in FIG. 2, the method 200 includes:

S210, determining that the terminal device is capable of performing hybrid automatic repeat request (HARQ transmission), and the initial transmission corresponding to the HARQ transmission is an unauthorized transmission;

S220. Determine indication information related to a transmission resource used by the terminal device to perform HARQ transmission.

Optionally, before determining the indication information related to the transmission resource used by the terminal device to perform the HARQ transmission, the transmission resource used by the terminal device to perform the HARQ transmission may be determined, and then the determined terminal device is used to perform the transmission resource. The transmission resource of the HARQ transmission is used to determine the indication information related to the transmission resource, and optionally, the indication information related to the transmission resource used by the terminal device to perform the HARQ transmission may be directly determined, and the alternative may be applied to other embodiments. , no longer repeat them one by one.

S230. Send a first message, where the first message includes the indication information.

Specifically, the network device determines, when the terminal device is capable of performing the hybrid automatic repeat request (HARQ) transmission, the indication information related to the transmission resource used by the terminal device to perform the HARQ transmission, and sends the indication information including the indication information to the terminal device. The first message, wherein the initial transmission corresponding to the HARQ transmission is an unlicensed transmission. After receiving the first message, the terminal device may determine the transmission resource used for the HARQ transmission according to the indication information included in the first message when the HRAQ transmission is enabled.

Therefore, in the method for uplink data transmission in the embodiment of the present invention, the network device determines that the terminal device can The hybrid automatic repeat request HARQ transmission is performed, and the initial transmission corresponding to the HARQ transmission is an unlicensed transmission; and after determining the indication information related to the transmission resource used by the terminal device for performing the HARQ transmission, sending the indication to the terminal device The first message of the message. Therefore, when the terminal device is capable of performing HARQ transmission, the transmission resource for performing HARQ transmission can be determined according to the indication information, thereby improving the reliability of data transmission and reducing system resource overhead.

In the embodiment of the present invention, optionally, the HARQ transmission is an unauthorized transmission.

Alternatively, the method of the embodiments of the present invention can be applied to any one or more of the following fields: device to device D2D domain, machine to machine M2M domain, machine type communication MTC domain. However, the invention is not limited to this.

In the embodiment of the present invention, optionally, as shown in FIG. 3, the method 200 further includes:

S240. Receive a second message, where the second message includes transmission requirement indication information used to indicate whether the terminal device needs to perform HARQ transmission.

Correspondingly, S210 is specifically configured to: according to the transmission requirement indication information, determine that the terminal device is capable of performing HARQ transmission.

Specifically, in S210, the network device determines, according to the transmission requirement indication information sent by the terminal device and other system conditions, whether the terminal device can perform HARQ transmission.

It should be understood that the size of the sequence numbers of the above processes does not imply a sequence of executions, and the order of execution of the processes should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiments of the present invention. For example, S240 is executed before S210.

In the embodiment of the present invention, the terminal device that does not need to perform the HRAQ transmission may send the transmission requirement indication information to the network device, indicating that the HARQ transmission is not required, and the terminal device that needs to perform the HARQ transmission does not send the transmission requirement to the network device. Instructing the information that the network device does not receive the transmission requirement indication information sent by the terminal device within a certain period of time, and the terminal device may be considered to perform HARQ transmission. Alternatively, the terminal device that needs to perform the HARQ transmission sends the transmission requirement indication information to the network device, indicating that the HARQ transmission is required, and the terminal device that does not need to perform the HARQ transmission does not send the transmission requirement indication information to the network device, and the network device does not receive the transmission within a certain period of time. The transmission requirement indication information sent to the terminal device may be considered that the terminal device does not need to perform HARQ transmission, but the present invention is not limited thereto.

In the embodiment of the present invention, the terminal device may determine whether the HARQ transmission needs to be performed according to the importance of the uplink data, or the terminal device may determine whether the HARQ transmission needs to be performed according to the quality of the channel used for transmitting the uplink data. Can also judge according to other conditions Whether the HARQ transmission needs to be performed or not is not limited by the present invention.

It should be understood that, in the embodiment of the present invention, if the terminal device does not need to perform HARQ transmission, when the network device does not successfully receive the initial uplink data transmitted by the terminal device, the terminal device does not perform HARQ transmission; if the terminal device needs to perform HARQ transmission, but the network device determines that the terminal device cannot perform HARQ transmission according to system conditions, and when the network device fails to receive the initial uplink data transmitted by the terminal device, the terminal device does not perform HARQ transmission.

In the embodiment of the present invention, optionally, when the terminal device performs initial transmission or HARQ transmission, the terminal device may perform redundant transmission by using multiple CTUs, and the multiple CTUs may correspond to the same transmission time interval TTI, or may correspond to different TTIs. The multiple CTUs may correspond to the same antenna, or may correspond to different antennas, which is not limited by the present invention.

Optionally, when the network device determines that the terminal device cannot perform the HARQ transmission, the network device also sends a message including the indication information to the terminal device, and the terminal device may determine, according to the indication information, the normal transmission. Transfer resources and transmit uplink data. That is, when the terminal device cannot perform the HARQ transmission, the message that the network device sends to the terminal device related to the transmission resource used by the terminal device for uplink data transmission does not include the indication information related to the transmission resource of the HARQ transmission. .

Optionally, in S240, the network device may receive the second message sent by the terminal device by using a certain uplink common control channel, where the second message may further include the corresponding requirement of the terminal device for performing the HARQ, which is not limited by the disclosure. .

For example, the terminal device may add a field related to the HARQ transmission in an RRC Connection Request message. For example, any indication information including but not limited to the following indication information may be added to the RRC connection setup request message: grantFreeCapability BITSTRING (SIZE (8)), indicating different Grant Free support capabilities, the indication information One of the 8 bits included is used to indicate whether the terminal device needs to perform HARQ transmission. For example, when the value of the one bit is taken as 1, the terminal device is required to perform HARQ transmission (1-Enable), in the one. When the value of the bit is 0, it indicates that the terminal device does not need to perform HARQ transmission (0-Disable); the candidateMappingRule indicates the candidate CTU sequence number mapping rule set, and the redundancyTransmissionPattern indicates the HARQ transmission mode.

In the embodiment of the present invention, optionally, the Grant Free HARQ transmission mode may be added in the definition of the existing standard transmission mode to determine the transmission during the HARQ transmission. The pattern, for example, can be defined as shown in Table 1:

Table 1

Optionally, in S220, the indication information includes at least one of the following information: information of a dedicated connection signature DCS of the terminal device; information of a contention transmission unit CTU; and a CTU of the terminal device that can be used to transmit uplink data. Number; CTU access area information; CTU access quantity information in the CTU access area; initial CTU information in the CTU access area; CTU sequence number mapping rule information;

The CTU refers to a transmission resource combining time, frequency, and code domain, or a transmission resource combining time, frequency, and pilot, or a transmission resource combining time, frequency, code domain, and pilot.

It should be understood that the network device may allocate a unique dedicated connection signature DCS to the terminal device, and the network device may directly notify the terminal device of the value of the exclusive connection signature, or notify the terminal device of the index value of the exclusive connection signature, and the terminal device according to the The index value may determine the DCS allocated by the network device for itself; the information of the CTU may be specifically the sequence number of the CTU; the information of the CTU access area may be specifically the sequence number of the CTU access area; the CTU sequence number mapping rule information may be specific. The mapping rule may also be a sequence number corresponding to a specific mapping rule. For example, the CTU sequence number mapping rule set {f _UE-CTU (·)} may be predefined by a standard specification or a manner agreed by the communication parties in advance, and the CTU sequence number mapping The rule set includes different CTU mapping rules. In the communication process, the network device sends the sequence number of the corresponding mapping rule to the UE by signaling, or the network device can also send the CTU sequence number mapping rule to the UE by using the display signaling. The invention is not limited thereto. In an embodiment of the invention, one form of the sequence number may be an index.

Specifically, in the embodiment of the present invention, the network device may only notify the terminal device of the DCS allocated to the UE, and the terminal device may determine, according to the correspondence between the DCS and the CTU specified by the standard or in advance, for transmitting the uplink data. The CTU may also inform the UE of the sequence number display of the determined CTU access area, and the UE specifies according to the serial number and standard of the CTU access area. Or the number of CTUs in the CTU access area and the number of the starting CTUs in the CTU access area and the number of CTUs that can be used to transmit uplink data, determine the CTU used to transmit the uplink data; The device may also inform the UE only the number of CTUs in the CTU access area, and the UE may use the CTU access area specified in the standard or the pre-agreed, the sequence number of the initial CTU in the CTU access area, and can be used for transmitting uplink data. The number of CTUs and the number of CTUs in the CTU access area determine the CTU for transmitting uplink data; the network device may also inform the UE of any one or more of the above seven kinds of information, and the UE may The standard specification or prior agreement determines several other types of information and determines the CTU used to transmit the uplink data based on the information obtained and implicitly determined. The invention is not limited thereto.

Optionally, in S230, the network device may use a broadcast channel, such as a Broadcast Control Channel (BCCH) in the Long Term Evolution (LTE) system, to broadcast all or part of the terminal devices in the system. Sending a message including the indication information; or using a dedicated control channel, such as a Dedicated Control Channel ("DCCH") in the LTE system, transmitting the indication to the specific one or a group of terminal devices in a unicast manner Messages of information, etc.; other channels may be used to deliver messages including indication information to all terminal devices in the system, or part of the terminal devices, or a specific terminal device or a group of terminal devices. Not limited.

In the embodiment of the present invention, optionally, the first message includes, in addition to the indication information, an enabling information of whether the network device supports Grant Free transmission and Grant Free HARQ transmission, and the Grant Free HARQ transmission enables The information includes whether the network device supports Grant Free HARQ transmission, and supports the code-single-slot (Singnature-Pilot) and Modulation and Coding Scheme (MCS) of the Grant Free HARQ transmission. Other information is included, which is not limited by the present invention.

For example, the network device may add indication information related to the HARQ transmission in a RRC message. For example, you can add "grantFreeCapability BITSTRING(SIZE(8))" to the existing standard "SystemInformationBlockTypeX" to define different Grant Free support capabilities. One of the 8 bits is used to indicate whether the network device can support HARQ transmission. For example, when the value of the one bit takes 1, it indicates that the network device can support HARQ transmission (1-Enable), and when the value of the one bit takes 0, it indicates that the network device cannot support HARQ transmission (0-Disable). ). The network device may add any one of the following indication information including but not limited to the RRC connection setup message. The information is: ueDCSIndex, indicating the DCS sequence number unique to the UE; the ctuAccessRegion indicating the CTU access area; the ctuNumber indicating the number of CTUs in the CTU access area; and the ctuMappingRule indicating the UE-CTU sequence number mapping rule.

In the embodiment of the present invention, optionally, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information of a DCS of the terminal device; the terminal device can be used for transmitting uplink The number of CTUs of data; the number of CTUs in the CTU access zone; the sequence number of the starting CTU in the CTU access zone.

In the embodiment of the present invention, optionally, the rule for determining the CTU sequence number is any one or more of the following formulas:

I _CTU-ij = (I _CTU-INT + DCS _i + j) mod N _CTU , or

I _CTU-ij =f(I _CTU-INT +DCS _i +j)mod N _CTU ,

Where j=0,1,...,Δ _i -1,DCS ₁ =0,DCS _i =DCS _i-1 +Δ _i-1 ,i=2,3...,f(·) is an interleaving function, interleaving The range is [0...N _CTU -1], I _CTU-ij is the sequence number of the CTU, I _{CTU-INT is} the sequence number of the starting CTU in the CTU access area, and DCS _i is the DCS of the terminal device UE _i , Δ _i For the number of CTUs that the UE _i can use to transmit uplink data, the N _{CTU is} the number of _{CTUs in} the CTU access area.

In the embodiment of the present invention, optionally, a dedicated area of the HARQ transmission may be demarcated, and the dedicated area only allows the terminal equipment capable of performing HARQ transmission to contend for access and perform uplink data transmission. That is to say, the CTU access area is a CTU access area for HARQ transmission. Since Grant Free regular transmission is separated from HARQ transmission, the complexity of HARQ transmission resource allocation can be reduced, and the complexity of conventional transmission and Grant Free HARQ retransmission detection can be reduced. The present invention does not limit the division of the HARQ exclusive area.

For example, the HARQ-specific area may be demarcated according to the method shown in FIG. 4. For example, the access area 412 may be selected as the HARQ-specific area in the access area 402 according to the method shown in FIG. The access area 414 is selected as the HARQ-specific area, the access area 416 is selected as the HARQ-specific area in the access area 406, and the area 418 is selected as the HARQ-specific area in the access area 408, but the present invention is not limited thereto.

Correspondingly, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information of a DCS of the terminal device; a number of CTUs that the terminal device can use for transmitting HARQ uplink data; The number of CTUs in the CTU access area for HARQ transmission; the preamble of the starting CTU in the CTU access area for HARQ transmission number.

Optionally, the rule for determining the CTU sequence number is any one or more of the following formulas:

I _CTU-ij = (I _CTU-HARQ-INT + DCS _i +j) mod N _CTU-HARQ , or

I _CTU-ij =f(I _CTU-HARQ-INT +DCS _i +j)mod N _CTU-HARQ ,

Wherein, j = 0, 1, ..., Δ _i -1, DCS ₁ =0, DCS _i = DCS _i-1 + Δ _i-1 , i = 2, 3 ..., f (·) is an interleaving function The interleaving range is [0...N _CTU -1], I _CTU-ij is the sequence number of the CTU, and I _{CTU-HARQ-INT is} the sequence number of the starting CTU in the CTU access area for HARQ transmission, DCS _i is The DCS of the terminal device UE _i , Δ _{i is} the number of CTUs that the UE _i can use for HARQ transmission uplink data, and the N _{CTU-HARQ is} the number of CTUs in the CTU access region for the HARQ transmission.

In the embodiment of the present invention, optionally, when the CTU access area is a CTU access area for HARQ transmission, the rule for determining the CTU sequence number may also be expressed as:

I _CTU-ij = [(DCS _i + j) mod N _CTU-HARQ ] + I _{CTU-HARQ-INIT} ,

Where j=0,1,...,Δ _i -1,DCS ₁ =0, DCS _i =DCS _i-1 +Δ _i-1 ,i=2,3..., I _CTU-ij is the serial number of the CTU, DCS _i is the DCS of the terminal device UE _i , Δ _{i is} the number of CTUs that the UE _i can use for HARQ transmission uplink data, and N _{CTU-HARQ is} the number of CTUs in the CTU access region for HARQ transmission, I _{The CTU-HARQ-INIT is} the sequence number of the starting CTU in the CTU access area for the HARQ transmission, and the CTU number in the CTU access area for the HARQ transmission is in the range of [I _{CTU-HARQ-INIT} , I _{CTU-HARQ-INIT} +1,...,I _{CTU-HARQ-INIT} +N _CTU-HARQ -1].

In the embodiment of the present invention, optionally, the terminal device capable of performing HARQ transmission and the terminal device capable of performing HARQ transmission may have the same CTU access area, thereby improving the utilization of transmission resources.

In the embodiment of the present invention, optionally, a group of terminal devices may determine a CTU for performing initial transmission or HARQ transmission according to the indication information. For example, as shown in FIG. 5, each terminal device performs regular transmission in TTI1, and then according to In the case of ACK/NACK feedback, HARQ transmission is performed in one or more subsequent TTIs. Specifically, Figure 5 includes Grant Free initial transmission 512 and Grant Free HARQ transmission 514. Eight terminal devices are mapped to four CTUs, each There are two different terminal transmissions on each CTU. Within TTI1, UE1-8 maps to 4 CTUs 502-508 according to the first combination, and performs Grant Free initial transmission 512. Among them, UE1 and UE2 are mapped to CTU 502, UE3 and UE4 are mapped to CTU 504, UE5 and UE6 are mapped to CTU 506, and UE7 and UE8 are mapped to CTU 508. Within TTI2, UE 1-8 maps to 4 CTUs 502-508 in a second combination, performing a first Grant Free HARQ transmission 514. Among them, UE1 and UE5 Mapped to CTU 502, UE2 and UE6 are mapped to CTU 504, UE3 and UE7 are mapped to CTU 506, and UE4 and UE8 are mapped to CTU 508. Within TTI3, UE1-8 maps to four CTUs 502-508 in a third combination, for a second Grant Free HARQ transmission 514. Among them, UE1 and UE3 are mapped to CTU 502, UE5 and UE7 are mapped to CTU 504, UE2 and UE4 are mapped to CTU 506, and UE6 and UE8 are mapped to CTU 508.

In the embodiment of the present invention, optionally, when the terminal device fails to transmit the uplink data, the CTU for performing the HARQ transmission may be determined according to the new CTU sequence number mapping rule, where the new CTU sequence number mapping rule may be specified by the standard. Or the UE and the network device agree in advance, or the network device may send the UE to the UE through a broadcast channel or other downlink channel. For example, when the terminal device fails to transmit the uplink data, the network device may receive the CTU remapping rule. The message is that the terminal device determines the CTU for performing the HARQ transmission according to the CTU re-mapping rule, which is not limited by the present invention.

For example, the new CTU sequence number mapping rule may be a new mapping rule reselected from the optional mapping scheme set {f _UE-CTU (·)}. It is also possible to re-allocate DCS _i for UE _{i and} update according to the currently adopted rule for determining the CTU sequence number.

Assignment, thereby mapping UE _i to a new CTU, and providing UE _i with new CTU transmission resources. Can also be partially changed

The assignment of one or more elements in the medium provides a partial new CTU transmission resource for UE _i . However, the invention is not limited to this.

In the embodiment of the present invention, if the UE and the network device (for example, the base station BS) agree to confirm the reception detection by the ACK mode, the network device sends an ACK to the UE after the successful detection. If the UE does not receive an ACK after waiting for a certain period of time, it considers that the uplink transmission conflicts, and the network device fails to successfully receive the uplink data. If the UE and the network device agree to acknowledge the reception detection failure in the NACK manner, the network device will send a NACK to the UE after the detection fails. If the UE receives the NACK, it considers that the uplink transmission conflicts, and the network device fails to successfully receive the uplink data.

It should be understood that in the embodiment of the present invention, the network device receives the uplink Grant Free transmission of the plurality of terminal devices. The network device identifies the CTUs for performing the Grant Free HARQ transmission according to the correspondence between the I _{CTU, ij} and the CTU access area, and the correspondence between the I _{CTU, ij} and the DCS of the terminal device, and performs data reception on the CTUs.

In the receiving process, the ACK/NACK feedback for the UE _i is not detected for the I _CTU, and each CTU indicated by _{ij is} performed separately, but a unified ACK/NACK is performed after the UE _i redundant merge reception is completed.

In the embodiment of the present invention, optionally, different terminal devices may perform uplink data transmission through the same CTU, thereby causing conflicts between the Grant Free initial transmission or the HARQ transmission, and a corresponding mechanism is needed to be solved. For example, as shown in FIG. 6(a), UE1 and UE2 are mapped to CTU 602 in TTI1 for initial transmission, and thus there is a collision on CTU 602. To resolve the Grant Free transmission conflict, the conflicting terminal devices can be mapped to the new HARQ resources separately in TTI2. For example, UE1 is mapped to CTU 602 and UE2 is mapped to CTU 604. Only UE2 on the CTU 604 performs HARQ transmission, so it can be successfully detected. There is still a collision on the CTU 602 due to the simultaneous HARQ transmission of UE1 and the initial transmission of UE5. To resolve the Grant Free HARQ transmission conflict, the conflicting terminal devices can be mapped to the new HARQ resources in TTI3. For example, UE1 is mapped to CTU 608, and UE5 is mapped to CTU 602.

In FIG. 6(b), UE1 and UE2 are mapped to CTU 602 for initial transmission, and thus there is a collision on CTU 602. The conflicting terminal devices are respectively mapped to new HARQ resources in TTI2. For example, UE1 is mapped to CTU 602 and UE2 is mapped to CTU 604. Only UE2 on the CTU 604 performs HARQ transmission, so it can be successfully detected. There is still a collision on the CTU 602 due to the simultaneous HARQ transmission of UE1 and the initial transmission of UE5. To resolve the Grant Free HARQ transmission collision, the signal on the CTU 602 within the conflicting TTI1 may be stored first, and then the UE2 and UE5 detected by the TTI2 solved UE2 signal.

Specifically, in Figure 6(b), the received signal model on CTU 602 within TTI1 is:

y ₁₁ =h ₁₁₁ x ₁ +h ₁₂₁ x ₂ +n ₁₁ (1)

The received signals on CTU602 and CTU604 in TTI2 are:

y ₁₂ =h ₁₁₂ x ₁ +h ₁₅₂ x ₅ +n ₁₂ (2)

y ₂₂ =h ₂₂₂ x ₂ +n ₂₂ (3)

Where y _ik is the received signal on the i-th CTU in the kth TTI, h _ijk represents the channel information from the UE _j to the network device on the i-th CTU of the kth TTI, and X _j represents the transmission of UE _j The signal, n _{ik ,} represents the receiver noise on the ith CTU within the kth TTI.

One way to solve equations (1) to (3) is to first obtain the estimated value of X ₂ from its independent equation (3).

Then based on the estimated value

Eliminate X ₂ from equation (1) and subtract the equation after X ₂

The solution to the estimated value of X ₁

Finally based on estimates

After canceling the interference from equation (2), solve the equation

That is, to solve the Grant Free HARQ transmission conflict, the UE2 information may be first solved from the CTU 604 in the TTI2 where the collision does not occur, and then the UE2 information is removed from the received signal of the CTU 602 in the TTI1 by using the solved UE2 information. UE1 interference, thereby releasing UE1 The information finally uses the information of the solved UE1 to cancel the interference of UE1 from the received signal of the CTU 602 in the TTI2 and finally solves the UE5.

The embodiments of the present invention are described in detail below with reference to the specific examples.

FIG. 7 shows a schematic flow chart of a method for uplink data transmission according to another embodiment of the present invention. As shown in FIG. 7, the method 300 includes:

S301. The network device receives the report information sent by the terminal device (for example, the UE).

Optionally, the reporting information may be transmitted by the UE on a certain uplink common channel, and may include the enabling information of the UE multi-antenna Grant Free transmission, such as whether to support the Grant Free transmission, and the enabling of the UE Grant Free HARQ transmission. Information such as whether to support Grant Free HARQ transmission and the corresponding requirements for Grant Free HARQ transmission. And the network device allocates a unique dedicated connection DCS sequence number to each UE according to the UE reporting information and other system conditions, delimits the CTU access area, and assigns a unique CTU sequence number to each CTU in the access area.

S302. The network device sends the Grant Free enable information by using the high layer signaling.

Optionally, the network device may send the enabling information by using a broadcast channel, where the enabling information may include the enabling information of the Grant Free transmission, where the enabled information of the transmission includes whether the network device supports the Grant Free transmission, the CTU access area, The information about the number of CTUs in the CTU access area, the DCS of the UE, and the CTU number mapping rule may also include the enabling information of the Grant Free HARQ transmission, including whether the network device supports Grant Free HARQ transmission, and the Signature supporting the Grant Free HARQ transmission. - Pilot set and modulation coding method MCS and other information.

S303. The network device receives uplink data transmitted by the terminal device.

S304. The network device sends an ACK/NACK to the terminal device.

Optionally, after receiving the uplink data, the network device performs normal transmission UE detection or HARQ transmission UE detection, and informs the terminal device whether the uplink data is successfully transmitted by using ACK/NACK.

Optionally, if the terminal device and the network device agree to confirm that the receiving detection succeeds in the ACK mode, the network device sends an ACK to the terminal device after the successful detection. If the terminal device does not receive an ACK after waiting for a certain period of time, it considers that the uplink transmission conflicts. If the terminal device and the network device agree to confirm the reception detection failure in the NACK manner, the network device will send a NACK to the terminal device after the detection fails. If the terminal device receives the NACK, it considers that the uplink transmission conflicts.

S305. The network device informs the terminal device of the CTU remapping rule by using high layer signaling.

S306. The network device receives uplink data that is sent by the terminal device according to the CTU re-mapping rule.

S307. The network device sends an ACK/NACK to the UE.

Optionally, the method 300 for the uplink data transmission may not include the S305. In this case, the CTU remapping rule may be a mapping rule specified by the standard or a mapping rule agreed by the network device and the terminal device in advance.

FIG. 8 is a schematic flowchart of a method for uplink data transmission according to still another embodiment of the present invention. As shown in FIG. 8, the method 400 can be performed by a network device, the method 400 comprising:

S401. Receive the report information sent by the UE.

S402. Determine a CTU access area of the UE.

S403. Determine a sequence number of each CTU in the CTU access area.

S404. Send broadcast information to the UE.

S405. Receive uplink data that is sent by the UE according to the broadcast information.

S406. Detecting the received uplink data.

S407. Determine, according to the detection result, whether the uplink data is successfully transmitted.

S408. When determining that the uplink data transmission is successful, send, to the UE, information that confirms that the uplink data is successfully received.

Optionally, when it is determined that the uplink data is not successfully transmitted, S407 proceeds to S409 to notify the UE that the uplink data is not successfully received, and then executes S410 to determine a conflict resolution solution.

Optionally, the solution one determined in S410 is: directly executing S405 and subsequent steps.

Optionally, the solution 2 determined in S410 is: performing S411, re-determining the CTU sequence number mapping rule; and then performing the steps S404 and subsequent steps in sequence.

It should be understood that the content of the information included in the relevant steps in the method 400 is the same as the content of the information included in the related steps in the method 300. To avoid repetition, details are not described herein again.

In the embodiment of the present invention, optionally, the foregoing operation steps and algorithms may be performed on a Building Base Band Unite (BBU) in a network device, or may be in a cloud communication center architecture ( Cloud-RAN) is processed in the processing pool. However, the invention is not limited to this.

Therefore, in the method for uplink data transmission in the embodiment of the present invention, the network device determines that the terminal device can perform hybrid automatic repeat request (HARQ) transmission, and the initial transmission corresponding to the HARQ transmission is an unauthorized transmission; and determining that the terminal device is used for performing HARQ After the indication information related to the transmitted transmission resource, the first message including the indication information is sent to the terminal device. Thus, at the terminal When the device is capable of performing HARQ transmission, the transmission resource for performing HARQ transmission can be determined according to the indication information, thereby improving the reliability of data transmission and reducing system resource overhead.

The method for uplink data transmission according to the embodiment of the present invention is described in detail above with reference to FIG. 2 to FIG. 8. Referring to FIG. 9 and FIG. 10, the uplink data transmission according to the embodiment of the present invention is described in detail from the terminal device side. Methods. It should be understood that the interaction between the terminal device and the network device described in the network device side and related features, functions, and the like correspond to the description on the terminal device side, and the repeated description is omitted as appropriate for brevity.

FIG. 9 shows a schematic flow chart of a method for uplink data transmission according to still another embodiment of the present invention. The method is performed by a terminal device. As shown in FIG. 9, the method 500 includes:

S510: Receive a first message, where the first message includes indication information related to a transmission resource used by the terminal device to perform HARQ transmission, where the initial transmission corresponding to the HARQ transmission is an unauthorized transmission;

S520. When the HARQ transmission is enabled, perform HARQ transmission according to the indication information included in the first message.

Specifically, the terminal device receives, by the network device, a first message that includes indication information, where the indication information is related to a transmission resource used by the terminal device to perform HARQ transmission, and when the terminal device is capable of performing HARQ transmission, the terminal device is configured according to the The indication information included in the first message determines a transmission resource for performing HARQ transmission, and performs HARQ transmission.

Therefore, in the uplink data transmission method of the embodiment of the present invention, the terminal device receives the first message that is sent by the network device and includes indication information related to the transmission resource used for performing the HARQ transmission, thereby enabling the terminal device to perform HARQ transmission. The transmission resource for performing the HARQ transmission can be determined according to the indication information, so that the reliability of the data transmission can be improved, and the system resource overhead can be reduced.

In the embodiment of the present invention, optionally, as shown in FIG. 10, the method 500 further includes:

S530. Send a second message, where the second message includes transmission requirement indication information used to indicate whether the terminal device needs to perform HARQ transmission.

Optionally, in S510, the indication information includes at least one of the following information: the terminal Information about the unique connection signature DCS of the device; information of the CTU of the contention transmission unit; the number of CTUs that the terminal device can use to transmit uplink data; information of the CTU access area; the number of CTUs in the CTU access area; CTU connection Information about the initial CTU in the inbound area; CTU sequence number mapping rule information;

Specifically, in the embodiment of the present invention, the terminal device may only receive the DCS allocated by the network device, and the terminal device may determine, according to the correspondence between the DCS and the CTU specified by the standard or in advance, for transmitting the uplink data. The CTU may also receive only the sequence number of the CTU access area sent by the network device, and the number of CTUs in the CTU access area specified or pre-agreed according to the serial number and standard of the CTU access area and the CTU. The sequence number of the initial CTU in the access area and the number of CTUs that can be used to transmit uplink data determine the CTU for transmitting uplink data; the terminal device can only receive the number of CTUs in the CTU access area, the terminal device Determining for the CTU access area specified or pre-agreed by the standard, the sequence number of the starting CTU in the CTU access area, the number of CTUs that can be used to transmit uplink data, and the number of CTUs in the CTU access area are determined for Performing CTU for transmitting uplink data; the terminal device may also receive any one or more of the above seven kinds of information, and according to standard regulations or prior agreements Given several other information, and after obtaining the information for determining implicitly determined uplink data transmission according to the display CTU. The invention is not limited thereto.

Optionally, when the terminal device is unable to perform the HARQ transmission, the terminal device also receives the message that is sent by the network device, including the indication information. At this time, the terminal device may determine, according to the indication information, the transmission used for the normal transmission. Resources and transfer of upstream data. That is to say, when the terminal device is unable to perform the HARQ transmission, the message for performing uplink data transmission sent by the network device received by the terminal device does not include the indication information related to the transmission resource of the HARQ transmission.

In the implementation of the present invention, optionally, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information of a DCS of the terminal device; the terminal device can be used to transmit uplink data. The number of CTUs; the number of CTUs in the CTU access area; the sequence number of the starting CTU in the CTU access area.

I _CTU-ij = (I _CTU-INT + DCS _i + j) mod N _CTU , or

I _CTU-ij =f(I _CTU-INT +DCS _i +j)mod N _CTU ,

In the embodiment of the present invention, optionally, the CTU access area is a CTU access area for HARQ transmission. That is to say, the dedicated area of the HARQ transmission can be demarcated, and the HARQ-specific area only allows the terminal equipment capable of performing HARQ transmission to compete for access and perform uplink data transmission. Since Grant Free regular transmission is separated from HARQ transmission, the complexity of HARQ resource allocation can be reduced, and the complexity of conventional transmission and Grant Free HARQ retransmission detection can be reduced.

Optionally, in S510, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information of a DCS of the terminal device; The number of CTUs that can be used for HARQ transmission of uplink data; the number of CTUs in the CTU access area for HARQ transmission; the sequence number of the starting CTU in the CTU access area for HARQ transmission.

I _CTU-ij = (I _CTU-HARQ-INT + DCS _i +j) mod N _CTU-HARQ , or

I _CTU-ij =f(I _CTU-HARQ-INT +DCS _i +j)mod N _CTU-HARQ ,

I _CTU-ij = [(DCS _i + j) mod N _CTU-HARQ ] + I _{CTU-HARQ-INIT} ,

FIG. 11 is a schematic flowchart of a method for uplink data transmission according to still another embodiment of the present invention. As shown in FIG. 11, the method 600 can be performed by a terminal device, and the method 600 includes:

S601. Send the report information to the network device.

S602. Receive broadcast information sent by a network device.

S603. Determine, according to the broadcast information, a CTU for transmitting uplink data.

S604. Transmit uplink data by using the determined CTU.

S605. Determine whether a conflict occurs during uplink transmission.

S606. Determine a conflict resolution when determining that a conflict occurs;

Optionally, the solution one determined in S606 is: directly executing S604 and subsequent steps thereof.

Optionally, the solution 2 determined in S606 is: performing S602 and subsequent steps.

Optionally, in S601, the UE may transmit the report information to the network device on a certain uplink common channel, where the report information may include the enable information of the UE Grant Free transmission, such as whether to support the Grant Free transmission, and the UE. Grant Free HARQ transmission enable information, such as whether you need Grant Free HARQ transmission, and the corresponding requirements of Grant Free HARQ transmission.

Optionally, in S602, the broadcast information received by the UE may include the enable information of the Grant Free transmission, where the enabled information of the transmission includes whether the network device supports the Grant Free transmission, the CTU access area, and the CTU access area. The number of CTUs, the DCS of the UE, the CTU sequence number mapping rule, etc., also includes the enabling information of the Grant Free HARQ transmission, including whether the network device supports Grant Free HARQ transmission, and Signature-Pilot and modulation coding supporting Grant Free HARQ transmission. Ways such as MCS.

Optionally, in S605, if the UE and the network device agree to confirm the reception detection by the ACK mode, the network device sends an ACK to the UE after the successful detection. If the UE does not receive an ACK after waiting for a certain time, it considers that the uplink transmission conflicts. If the UE and the network device agree to acknowledge the reception detection failure in the NACK manner, the network device will send a NACK to the UE after the detection fails. If the UE receives a NACK, it considers that the uplink transmission conflicts.

It should be understood that, in the embodiment of the present invention, the foregoing operation steps and algorithms related to the UE may be performed on the CPU of the UE side, but the present invention is not limited thereto.

The method for uplink data transmission according to an embodiment of the present invention is described in detail above with reference to FIG. 2 to FIG. 11. The uplink data transmission according to the embodiment of the present invention will be described in detail below with reference to FIG. 12 to FIG. Lost device.

Figure 12 illustrates an apparatus for uplink data transmission in accordance with an embodiment of the present invention. As shown in Figure 12, the apparatus 10 includes:

The first determining module 11 is configured to determine that the terminal device is capable of performing hybrid automatic repeat request (HARQ transmission), and the initial transmission corresponding to the HARQ transmission is an unauthorized transmission;

a second determining module 12, configured to determine indication information related to a transmission resource used by the terminal device to perform HARQ transmission;

The sending module 13 is configured to send a first message, where the first message includes the indication information determined by the second determining module 12.

Specifically, when determining that the terminal device can perform the hybrid automatic repeat request (HARQ transmission), the apparatus for determining the uplink data transmission determines the indication information related to the transmission resource used by the terminal device to perform the HARQ transmission, and sends the indication information to the terminal device, including The first message of the indication information, wherein the initial transmission corresponding to the HARQ transmission is an unauthorized transmission. After receiving the first message, the terminal device may determine the transmission resource used for the HARQ transmission according to the indication information included in the first message when the HRAQ transmission is enabled.

Therefore, the apparatus for uplink data transmission in the embodiment of the present invention determines that the terminal device can perform hybrid automatic repeat request (HARQ) transmission, and the initial transmission corresponding to the HARQ transmission is an unlicensed transmission; and determining that the terminal device is used for performing HARQ transmission transmission. After the indication information related to the resource, the first message including the indication information is sent to the terminal device. Therefore, when the terminal device is capable of performing HARQ transmission, the transmission resource for performing HARQ transmission can be determined according to the indication information, thereby improving the reliability of data transmission and reducing system resource overhead.

In the embodiment of the present invention, optionally, as shown in FIG. 13, the device 10 further includes:

The receiving module 14 is configured to receive a second message, where the second message includes transmission requirement indication information used to indicate whether the terminal device needs to perform HARQ transmission;

Correspondingly, the first determining module 11 is specifically configured to:

Determining that the terminal device can perform HARQ transmission according to the transmission requirement indication information included in the second message received by the receiving module 14.

In the embodiment of the present invention, optionally, the indication information includes at least one of the following information: information of a dedicated connection signature DCS of the terminal device; information of a contention transmission unit CTU; the terminal device can be used to transmit uplink data. Number of CTUs; CTU access area information; CTU number information in the CTU access area; initial CTU information in the CTU access area; CTU Sequence number mapping rule information;

I _CTU-ij = (I _CTU-INT + DCS _i + j) mod N _CTU , or

I _CTU-ij =f(I _CTU-INT +DCS _i +j)mod N _CTU ,

In the embodiment of the present invention, optionally, the CTU access area is a CTU access area for HARQ transmission.

In the embodiment of the present invention, optionally, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information of a DCS of the terminal device; the terminal device can be used for HARQ transmission. The number of CTUs of the uplink data; the number of CTUs in the CTU access area for HARQ transmission; the sequence number of the starting CTU in the CTU access area for HARQ transmission.

I _CTU-ij = (I _CTU-HARQ-INT + DCS _i +j) mod N _CTU-HARQ , or

I _CTU-ij =f(I _CTU-HARQ-INT +DCS _i +j)mod N _CTU-HARQ ,

In the embodiment of the present invention, the device can be applied to any one or more of the following fields: device to device D2D domain, machine to machine M2M domain, and machine type communication MTC domain.

In the embodiment of the present invention, optionally, the device is a network device.

It should be understood that the apparatus 10 for uplink data transmission according to an embodiment of the present invention may correspond to the method 200 of performing uplink data transmission in the embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the apparatus 10 are respectively The corresponding processes of the various methods in FIG. 2 and FIG. 3 are implemented, and are not described herein for brevity.

FIG. 14 shows an apparatus for uplink data transmission according to another embodiment of the present invention. As shown in FIG. 14, the apparatus 20 includes:

The receiving module 21 is configured to receive a first message, where the first message includes indication information related to a transmission resource used by the apparatus for performing HARQ transmission, where the initial transmission corresponding to the HARQ transmission is an unauthorized transmission;

The sending module 22 is configured to perform HARQ transmission according to the indication information included in the first message received by the receiving module 21 when the HARQ transmission is enabled.

Specifically, the apparatus for uplink data transmission receives a first message, including indication information, sent by the network device, where the indication information is related to a transmission resource used by the terminal device to perform HARQ transmission, when the apparatus is capable of performing HARQ transmission. And determining, by the device according to the indication information included in the first message, a transmission resource for performing HARQ transmission, and performing HARQ transmission.

Therefore, the apparatus for uplink data transmission in the embodiment of the present invention receives the inclusion and the transmission sent by the network device. a first message for performing transmission resource related indication information for performing HARQ transmission, whereby when the apparatus is capable of performing HARQ transmission, the transmission resource for performing HARQ transmission can be determined according to the indication information, thereby improving reliability of data transmission, And can reduce system resource overhead.

In the embodiment of the present invention, the sending module 22 is further configured to: send a second message, where the second message includes transmission requirement indication information used to indicate whether the device needs to perform HARQ transmission.

In an embodiment of the present invention, optionally, the indication information includes at least one of the following information: information of a dedicated connection signature DCS of the apparatus; information of a contention transmission unit CTU; and a CTU that the apparatus can transmit for uplink data. Number of information; CTU access area information; CTU access area information in the CTU access area; initial CTU information in the CTU access area; CTU sequence number mapping rule information;

In the embodiment of the present invention, optionally, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information of a DCS of the device; the device can be used to transmit uplink data. The number of CTUs; the number of CTUs in the CTU access area; the sequence number of the starting CTU in the CTU access area.

I _CTU-ij = (I _CTU-INT + DCS _i + j) mod N _CTU , or

I _CTU-ij =f(I _CTU-INT +DCS _i +j)mod N _CTU ,

Where j=0,1,...,Δ _i -1,DCS ₁ =0,DCS _i =DCS _i-1 +Δ _i-1 ,i=2,3...,f(·) is an interleaving function, interleaving The range is [0...N _CTU -1], I _CTU-ij is the sequence number of the CTU, I _{CTU-INT is} the sequence number of the starting CTU in the CTU access area, DCS _i is the DCS of the device UE _i , and Δ _i is The number of _CTUs that the UE _i can use to transmit uplink data, and the N _{CTU is} the number of _{CTUs in} the CTU access area.

In the embodiment of the present invention, optionally, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: DCS information of the device; the device can be used for transmitting HARQ uplink data. Number of CTUs; the CTU used for HARQ transmission The number of CTUs in the access zone; the sequence number of the starting CTU in the CTU access zone for HARQ transmission.

I _CTU-ij = (I _CTU-HARQ-INT + DCS _i +j) mod N _CTU-HARQ , or

I _CTU-ij =f(I _CTU-HARQ-INT +DCS _i +j)mod N _CTU-HARQ ,

Wherein, j = 0, 1, ..., Δ _i -1, DCS ₁ =0, DCS _i = DCS _i-1 + Δ _i-1 , i = 2, 3 ..., f (·) is an interleaving function The interleaving range is [0...N _CTU -1], I _CTU-ij is the sequence number of the CTU, and I _{CTU-HARQ-INT is} the sequence number of the starting CTU in the CTU access area for HARQ transmission, DCS _i is The DCS of the device UE _i , Δ _{i is} the number of CTUs that the UE _i can use for HARQ transmission of uplink data, and the N _{CTU-HARQ is} the number of CTUs in the CTU access region for HARQ transmission.

In the embodiment of the present invention, optionally, the device is a terminal device.

In the embodiment of the present invention, optionally, the above operation steps and algorithms may be executed on the CPU of the device, but the present invention is not limited thereto.

It should be understood that the apparatus 20 for uplink data transmission in accordance with embodiments of the present invention may correspond to the method 500 of performing uplink data transmission in embodiments of the present invention, and that the above and other operations and/or functions of the various modules in the apparatus 20 are respectively The corresponding processes of the various methods in FIG. 9 and FIG. 10 are implemented, and are not described herein for brevity.

Therefore, the apparatus for uplink data transmission in the embodiment of the present invention receives a first message that is sent by the network device and includes indication information related to a transmission resource used for performing HARQ transmission, thereby, when the apparatus is capable of performing HARQ transmission, The indication information determines the transmission resource for performing the HARQ transmission, thereby improving the reliability of the data transmission and reducing the system resource overhead.

As shown in FIG. 15, an embodiment of the present invention further provides an apparatus 30 for uplink data transmission. The apparatus 30 includes a processor 31, a memory 32, a receiver 33, a transmitter 34, and a bus system 35. The bus system 35 is selected. The processor 31, the memory 32, the receiver 33 and the transmitter 34 may be connected by a bus system 35 for storing instructions for executing instructions stored in the memory 32 to control the receiver 33. Receive signal and transmitter 34 send signal. The processor 31 is configured to determine that the terminal device is capable of performing hybrid automatic repeat request (HARQ) transmission, where the initial transmission corresponding to the HARQ transmission is an unlicensed transmission, and the processor 31 is further configured to determine that the terminal device is used for performing HARQ transmission. The transmitter 34 is configured to send a first message, where the first message includes the indication information determined by the processor 31.

It should be understood that, in the embodiment of the present invention, the processor 31 may be a central processing unit ("CPU"), and the processor 31 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 32 can include read only memory and random access memory and provides instructions and data to the processor 31. A portion of the memory 32 may also include a non-volatile random access memory. For example, the memory 32 can also store information of the device type.

The bus system 35 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 35 in the figure.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 31 or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 32, and the processor 31 reads the information in the memory 32 and, in conjunction with its hardware, performs the steps of the above method. To avoid repetition, it will not be described in detail here.

Optionally, as an embodiment, the receiver 33 is configured to: receive a second message, where the second message includes a transmission requirement indication message for indicating whether the terminal device needs to perform HARQ transmission. interest;

Correspondingly, the processor 31 is specifically configured to:

And determining, according to the transmission requirement indication information included in the second message received by the receiver 33, that the terminal device is capable of performing HARQ transmission.

Optionally, as an embodiment, the indication information includes at least one of the following information: information of a dedicated connection signature DCS of the terminal device; information of a contention transmission unit CTU; and a CTU that the terminal device can use to transmit uplink data. Number of information; CTU access area information; CTU access area information in the CTU access area; initial CTU information in the CTU access area; CTU sequence number mapping rule information;

Optionally, as an embodiment, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information of a DCS of the terminal device; the terminal device can be used to transmit uplink data. The number of CTUs; the number of CTUs in the CTU access area; the sequence number of the starting CTU in the CTU access area.

Optionally, as an embodiment, the rule for determining the CTU sequence number is any one or more of the following formulas:

I _CTU-ij = (I _CTU-INT + DCS _i + j) mod N _CTU , or

I _CTU-ij =f(I _CTU-INT +DCS _i +j)mod N _CTU ,

Optionally, as an embodiment, the CTU access area is a CTU access area for HARQ transmission.

Optionally, as an embodiment, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information of a DCS of the terminal device; the terminal device can be used for transmitting HARQ uplink data. The number of CTUs; the number of CTUs in the CTU access area for HARQ transmission; this is used in the CTU access area for HARQ transmission The serial number of the starting CTU.

I _CTU-ij = (I _CTU-HARQ-INT + DCS _i +j) mod N _CTU-HARQ , or

I _CTU-ij =f(I _CTU-HARQ-INT +DCS _i +j)mod N _CTU-HARQ ,

Optionally, as an embodiment, the HARQ transmission is an unlicensed transmission.

Alternatively, as an embodiment, the apparatus can be applied to any one or more of the following fields: device to device D2D domain, machine to machine M2M domain, machine type communication MTC domain.

Optionally, as an embodiment, the device is a network device.

It should be understood that the apparatus 30 for uplink data transmission according to an embodiment of the present invention may correspond to the apparatus 10 for uplink data transmission in the embodiment of the present invention, and may correspond to a corresponding body in a method according to an embodiment of the present invention, and the apparatus The above and other operations and/or functions of the respective modules in the 30 are respectively implemented in order to implement the respective processes of the respective methods in FIG. 2 and FIG. 3, and are not described herein again for brevity.

As shown in FIG. 25, an embodiment of the present invention further provides an apparatus 40 for uplink data transmission. The apparatus 40 includes a processor 41, a memory 42, a transmitter 43, a receiver 44, and a bus system 45. The bus system 45 is selected. The processor 41, the memory 42, the transmitter 43, and the receiver 44 may be connected by a bus system 45 for storing instructions for executing instructions stored in the memory 42 to control the transmitter 43. Transmit signal and receiver 44 receive signal. The receiver 44 is configured to receive a first message, where the first message includes indication information related to a transmission resource used by the apparatus for performing HARQ transmission, where the initial transmission corresponding to the HARQ transmission is an unauthorized transmission; the transmitter 43 And configured to perform HARQ transmission according to the indication information included in the first message received by the receiving module when the HARQ transmission is enabled.

It should be understood that, in the embodiment of the present invention, the processor 41 may be a central processing unit ("CPU"), and the processor 41 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 42 can include read only memory and random access memory and provides instructions and data to the processor 41. A portion of the memory 42 may also include a non-volatile random access memory. For example, the memory 42 can also store information of the device type.

The bus system 45 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 45 in the figure.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 41 or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 42, and the processor 41 reads the information in the memory 42 and performs the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.

Optionally, as an embodiment, the transmitter 43 is further configured to: send a second message, where the second message includes transmission requirement indication information used to indicate whether the device needs to perform HARQ transmission.

Optionally, as an embodiment, the indication information includes at least one of the following information: information of a dedicated connection signature DCS of the apparatus; information of a contention transmission unit CTU; a number of CTUs that the apparatus can use to transmit uplink data ; CTU access area information; CTU access area Number information of the CTU; information of the initial CTU in the CTU access area; CTU sequence number mapping rule information;

Optionally, as an embodiment, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information about a DCS of the device; and the device can be used to transmit a CTU of the uplink data. Quantity; the number of CTUs in the CTU access area; the sequence number of the starting CTU in the CTU access area.

I _CTU-ij = (I _CTU-INT + DCS _i + j) mod N _CTU , or

I _CTU-ij =f(I _CTU-INT +DCS _i +j)mod N _CTU ,

Optionally, as an embodiment, the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters: information of a DCS of the device; the device can be used for a CTU of the HARQ transmission uplink data. The number of CTUs in the CTU access area for HARQ transmission; the sequence number of the starting CTU in the CTU access area for HARQ transmission.

I _CTU-ij = (I _CTU-HARQ-INT + DCS _i +j) mod N _CTU-HARQ , or

I _CTU-ij =f(I _CTU-HARQ-INT +DCS _i +j)mod N _CTU-HARQ ,

Optionally, as an embodiment, the device is a terminal device.

It should be understood that the apparatus 40 for uplink data transmission according to an embodiment of the present invention may correspond to the apparatus 20 for uplink data transmission in the embodiment of the present invention, and may correspond to a corresponding body in performing the method according to an embodiment of the present invention, and the apparatus The above and other operations and/or functions of the respective modules in 40 are respectively implemented in order to implement the respective processes of the respective methods in FIG. 9 and FIG. 10, and are not described herein again for brevity.

It is to be understood that the phrase "one embodiment" or "an embodiment" or "an" Thus, "in one embodiment" or "in an embodiment" or "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the various embodiments of the present invention, it should be understood that the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention. The implementation process constitutes any limitation.

Additionally, the terms "system" and "network" are used interchangeably herein. It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined from A. But it should also be understood that determining B according to A does not mean only root According to A, B can also be determined based on A and/or other information.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

An integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. And before The storage medium includes: a USB flash drive, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk, or an optical disk. A medium that can store program code.

The technical features and descriptions in the above embodiments are applicable to other embodiments in order to make the application documents clear and clear. For example, the technical features of the method embodiments may be applied to device embodiments or other method embodiments, in other embodiments. I will not repeat them one by one.

The sending module or the sending unit or the sender in the above embodiment may refer to sending on the air interface, but may not send on the air interface, but send it to other devices to facilitate other devices to send on the air interface. The receiving module or the receiving unit or the receiver in the above embodiment may refer to receiving on the air interface, and may not receive on the air interface, but receive from other devices received on the air interface.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

A method for uplink data transmission, characterized in that the method is performed by a network device, the method comprising:

Determining that the terminal device is capable of performing hybrid automatic repeat request (HARQ transmission), and the initial transmission corresponding to the HARQ transmission is an unauthorized transmission;

Determining, by the terminal device, indication information related to a transmission resource used for performing HARQ transmission;

Sending a first message, where the first message includes the indication information.
The method of claim 1 further comprising:

Receiving a second message, where the second message includes transmission requirement indication information used to indicate whether the terminal device needs to perform HARQ transmission;

The determining that the terminal device is capable of performing hybrid automatic repeat request (HARQ) transmission is specifically:

Determining, according to the transmission requirement indication information, that the terminal device is capable of performing HARQ transmission.
The method according to claim 1 or 2, wherein the indication information comprises at least one of the following information:

The information of the exclusive connection signature DCS of the terminal device;

Competing for the transmission unit CTU information;

The number of CTUs that the terminal device can use to transmit uplink data;

Information about the CTU access area;

The number of CTUs in the CTU access area;

Information about the starting CTU in the CTU access area;

CTU sequence mapping rule information;

The CTU refers to a transmission resource combining time, frequency, and code domain, or a transmission resource combining time, frequency, and pilot, or a transmission resource combining time, frequency, code domain, and pilot. .
The method according to claim 3, wherein the CTU access area is a CTU access area for HARQ transmission.
The method according to claim 3, wherein the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters:

Information about the DCS of the terminal device;

The number of CTUs that the terminal device can use to transmit uplink data;

The number of CTUs in the CTU access area;

The sequence number of the starting CTU in the CTU access area.
The method according to claim 4, wherein the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters:

Information about the DCS of the terminal device;

The number of CTUs that the terminal device can use for HARQ to transmit uplink data;

The number of CTUs in the CTU access area for HARQ transmission;

The sequence number of the starting CTU in the CTU access area for HARQ transmission.
The method according to claim 5, wherein the rule for determining the CTU sequence number is any one or more of the following formulas:

I CTU-ij = (I CTU-INT + DCS i + j) mod N CTU , or

I CTU-ij =f(I CTU-INT +DCS i +j)mod N CTU ,

Where j=0,1,...,Δ i -1,DCS 1 =0,DCS i =DCS i-1 +Δ i-1 ,i=2,3...,f(·) is an interleaving function, interleaving The range is [0...N CTU -1], I CTU-ij is the sequence number of the CTU, I CTU-INT is the sequence number of the starting CTU in the CTU access area, and DCS i is the DCS of the terminal device UE i , Δ i is the number of CTUs that the UE i can use to transmit uplink data, and the N CTU is the number of CTUs in the CTU access area.
The method according to claim 6, wherein the rule for determining the CTU sequence number is any one or more of the following formulas:

I CTU-ij = (I CTU-HARQ-INT + DCS i +j) mod N CTU-HARQ , or

I CTU-ij =f(I CTU-HARQ-INT +DCS i +j)mod N CTU-HARQ ,

Wherein, j = 0, 1, ..., Δ i -1, DCS 1 =0, DCS i = DCS i-1 + Δ i-1 , i = 2, 3 ..., f (·) is an interleaving function The interleaving range is [0...N CTU -1], I CTU-ij is the sequence number of the CTU, and I CTU-HARQ-INT is the sequence number of the starting CTU in the CTU access area for HARQ transmission, DCS i For the DCS of the terminal device UE i , Δ i is the number of CTUs that the UE i can use for HARQ transmission uplink data, and N CTU-HARQ is the number of CTUs in the CTU access region for the HARQ transmission.
The method according to any one of claims 1 to 8, wherein the HARQ transmission is an unlicensed transmission.
The method according to any one of claims 1 to 9, wherein the method can be applied to any one or more of the following fields: device to device D2D domain, machine to machine M2M domain, machine class Communication MTC field.
A method for uplink data transmission, characterized in that the method is performed by a terminal device The method includes:

Receiving a first message, where the first message includes indication information related to a transmission resource used by the terminal device to perform HARQ transmission, and the initial transmission corresponding to the HARQ transmission is an unauthorized transmission;

When the HARQ transmission is enabled, the HARQ transmission is performed according to the indication information included in the first message.
The method of claim 11 wherein the method further comprises:

Sending a second message, where the second message includes transmission requirement indication information indicating whether the terminal device needs to perform HARQ transmission.
The method according to claim 11 or 12, wherein the indication information comprises at least one of the following information:

The information of the exclusive connection signature DCS of the terminal device;

Competing for the transmission unit CTU information;

The number of CTUs that the terminal device can use to transmit uplink data;

Information about the CTU access area;

The number of CTUs in the CTU access area;

Information about the starting CTU in the CTU access area;

CTU sequence mapping rule information;

The CTU refers to a transmission resource combining time, frequency, and code domain, or a transmission resource combining time, frequency, and pilot, or a transmission resource combining time, frequency, code domain, and pilot. .
The method according to claim 13, wherein the CTU access area is a CTU access area for HARQ transmission.
The method according to claim 13, wherein the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters:

Information about the DCS of the terminal device;

The number of CTUs that the terminal device can use to transmit uplink data;

The number of CTUs in the CTU access area;

The sequence number of the starting CTU in the CTU access area.
The method according to claim 14, wherein the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters:

Information about the DCS of the terminal device;

The number of CTUs that the terminal device can use for HARQ to transmit uplink data;

The number of CTUs in the CTU access area for HARQ transmission;

The sequence number of the starting CTU in the CTU access area for HARQ transmission.
The method according to claim 15, wherein the rule for determining the CTU sequence number is any one or more of the following formulas:

I CTU-ij = (I CTU-INT + DCS i + j) mod N CTU , or

I CTU-ij =f(I CTU-INT +DCS i +j)mod N CTU ,

Where j=0,1,...,Δ i -1,DCS 1 =0,DCS i =DCS i-1 +Δ i-1 ,i=2,3...,f(·) is an interleaving function, interleaving The range is [0...N CTU -1], I CTU-ij is the sequence number of the CTU, I CTU-INT is the sequence number of the starting CTU in the CTU access area, and DCS i is the DCS of the terminal device UE i , Δ i is the number of CTUs that the UE i can use to transmit uplink data, and the N CTU is the number of CTUs in the CTU access area.
The method according to claim 16, wherein the rule for determining the CTU sequence number is any one or more of the following formulas:

I CTU-ij = (I CTU-HARQ-INT + DCS i +j) mod N CTU-HARQ , or

I CTU-ij =f(I CTU-HARQ-INT +DCS i +j)mod N CTU-HARQ ,

Wherein, j = 0, 1, ..., Δ i -1, DCS 1 =0, DCS i = DCS i-1 + Δ i-1 , i = 2, 3 ..., f (·) is an interleaving function The interleaving range is [0...N CTU -1], I CTU-ij is the sequence number of the CTU, and I CTU-HARQ-INT is the sequence number of the starting CTU in the CTU access area for HARQ transmission, DCS i For the DCS of the terminal device UE i , Δ i is the number of CTUs that the UE i can use for HARQ transmission uplink data, and N CTU-HARQ is the number of CTUs in the CTU access region for the HARQ transmission.
The method according to any one of claims 11 to 18, wherein the HARQ transmission is an unlicensed transmission.
The method according to any one of claims 11 to 19, wherein the method can be applied to any one or more of the following fields: device to device D2D domain, machine to machine M2M domain, machine class Communication MTC field.
An apparatus for uplink data transmission, comprising:

a first determining module, configured to determine that the terminal device is capable of performing hybrid automatic repeat request (HARQ) transmission, where the initial transmission corresponding to the HARQ transmission is an unauthorized transmission;

a second determining module, configured to determine indication information related to a transmission resource used by the terminal device to perform HARQ transmission;

And a sending module, configured to send the first message, where the first message includes the indication information that is determined by the second determining module.
The device of claim 21, wherein the device further comprises:

a receiving module, configured to receive a second message, where the second message includes transmission requirement indication information used to indicate whether the terminal device needs to perform HARQ transmission;

The first determining module is specifically configured to:

Determining, according to the transmission requirement indication information included in the second message received by the receiving module, that the terminal device is capable of performing HARQ transmission.
The apparatus according to claim 21 or 22, wherein said indication information comprises at least one of the following information:

The information of the exclusive connection signature DCS of the terminal device;

Competing for the transmission unit CTU information;

The number of CTUs that the terminal device can use to transmit uplink data;

Information about the CTU access area;

The number of CTUs in the CTU access area;

Information about the starting CTU in the CTU access area;

CTU sequence mapping rule information;

The CTU refers to a transmission resource combining time, frequency, and code domain, or a transmission resource combining time, frequency, and pilot, or a transmission resource combining time, frequency, code domain, and pilot. .
The apparatus according to claim 23, wherein the CTU access area is a CTU access area for HARQ transmission.
The apparatus according to claim 23, wherein the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters:

Information about the DCS of the terminal device;

The number of CTUs that the terminal device can use to transmit uplink data;

The number of CTUs in the CTU access area;

The sequence number of the starting CTU in the CTU access area.
The apparatus according to claim 24, wherein the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters:

Information about the DCS of the terminal device;

The number of CTUs that the terminal device can use for HARQ to transmit uplink data;

The number of CTUs in the CTU access area for HARQ transmission;

The sequence number of the starting CTU in the CTU access area for HARQ transmission.
The apparatus according to claim 25, wherein the rule for determining the CTU sequence number is any one or more of the following formulas:

I CTU-ij = (I CTU-INT + DCS i + j) mod N CTU , or

I CTU-ij =f(I CTU-INT +DCS i +j)mod N CTU ,

Where j=0,1,...,Δ i -1,DCS 1 =0,DCS i =DCS i-1 +Δ i-1 ,i=2,3...,f(·) is an interleaving function, interleaving The range is [0...N CTU -1], I CTU-ij is the sequence number of the CTU, I CTU-INT is the sequence number of the starting CTU in the CTU access area, and DCS i is the DCS of the terminal device UE i , Δ i is the number of CTUs that the UE i can use to transmit uplink data, and the N CTU is the number of CTUs in the CTU access area.
The apparatus according to claim 26, wherein the rule for determining the CTU sequence number is any one or more of the following formulas:

I CTU-ij = (I CTU-HARQ-INT + DCS i +j) mod N CTU-HARQ , or

I CTU-ij =f(I CTU-HARQ-INT +DCS i +j)mod N CTU-HARQ ,

Wherein, j = 0, 1, ..., Δ i -1, DCS 1 =0, DCS i = DCS i-1 + Δ i-1 , i = 2, 3 ..., f (·) is an interleaving function The interleaving range is [0...N CTU -1], I CTU-ij is the sequence number of the CTU, and I CTU-HARQ-INT is the sequence number of the starting CTU in the CTU access area for HARQ transmission, DCS i For the DCS of the terminal device UE i , Δ i is the number of CTUs that the UE i can use for HARQ transmission uplink data, and N CTU-HARQ is the number of CTUs in the CTU access region for the HARQ transmission.
Apparatus according to any one of claims 21 to 28, wherein the HARQ transmission is an unlicensed transmission.
The device according to any one of claims 21 to 29, wherein the device can be applied to any one or more of the following fields: device to device D2D domain, machine to machine M2M domain, machine class Communication MTC field.
Apparatus according to any one of claims 21 to 30, wherein the apparatus is a network device.
An apparatus for uplink data transmission, comprising:

a receiving module, configured to receive a first message, where the first message includes indication information related to a transmission resource used by the apparatus to perform HARQ transmission, where the initial transmission corresponding to the HARQ transmission is an unauthorized transmission;

And a sending module, configured to perform HARQ transmission according to the indication information included in the first message received by the receiving module when the HARQ transmission is enabled.
The device according to claim 32, wherein the sending module is further configured to:

And transmitting a second message, where the second message includes transmission requirement indication information used to indicate whether the device needs to perform HARQ transmission.
The apparatus according to claim 32 or 33, wherein said indication information comprises at least one of the following information:

The information of the unique connection signature DCS of the device;

Competing for the transmission unit CTU information;

The number of CTUs that the apparatus can use to transmit uplink data;

Information about the CTU access area;

The number of CTUs in the CTU access area;

Information about the starting CTU in the CTU access area;

CTU sequence mapping rule information;

The CTU refers to a transmission resource combining time, frequency, and code domain, or a transmission resource combining time, frequency, and pilot, or a transmission resource combining time, frequency, code domain, and pilot. .
The apparatus according to claim 34, wherein the CTU access area is a CTU access area for HARQ transmission.
The apparatus according to claim 34, wherein the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters:

Information of the DCS of the device;

The number of CTUs that the apparatus can use to transmit uplink data;

The number of CTUs in the CTU access area;

The sequence number of the starting CTU in the CTU access area.
The apparatus according to claim 35, wherein the CTU sequence number mapping rule information is a rule for determining a CTU sequence number according to any one or more of the following parameters:

Information of the DCS of the device;

The device can be used for the number of CTUs for HARQ transmission of uplink data;

The number of CTUs in the CTU access area for HARQ transmission;

The sequence number of the starting CTU in the CTU access area for HARQ transmission.
The apparatus according to claim 36, wherein said rule for determining a CTU sequence number is any one or more of the following formulas:

I CTU-ij = (I CTU-INT + DCS i + j) mod N CTU , or

I CTU-ij =f(I CTU-INT +DCS i +j)mod N CTU ,

Where j=0,1,...,Δ i -1,DCS 1 =0,DCS i =DCS i-1 +Δ i-1 ,i=2,3...,f(·) is an interleaving function, interleaving The range is [0...N CTU -1], I CTU-ij is the sequence number of the CTU, I CTU-INT is the sequence number of the starting CTU in the CTU access area, and DCS i is the DCS of the device UE i , Δ i For the number of CTUs that the UE i can use to transmit uplink data, the N CTU is the number of CTUs in the CTU access area.
The apparatus according to claim 37, wherein the rule for determining the CTU sequence number is any one or more of the following formulas:

I CTU-ij = (I CTU-HARQ-INT + DCS i +j) mod N CTU-HARQ , or

I CTU-ij =f(I CTU-HARQ-INT +DCS i +j)mod N CTU-HARQ ,

Wherein, j = 0, 1, ..., Δ i -1, DCS 1 =0, DCS i = DCS i-1 + Δ i-1 , i = 2, 3 ..., f (·) is an interleaving function The interleaving range is [0...N CTU -1], I CTU-ij is the sequence number of the CTU, and I CTU-HARQ-INT is the sequence number of the starting CTU in the CTU access area for HARQ transmission, DCS i For the DCS of the device UE i , Δ i is the number of CTUs that the UE i can use for HARQ transmission uplink data, and N CTU-HARQ is the number of CTUs in the CTU access region for the HARQ transmission.
Apparatus according to any one of claims 32 to 39, wherein the HARQ transmission is an unlicensed transmission.
The device according to any one of claims 32 to 40, wherein the device can be applied to any one or more of the following fields: device to device D2D domain, machine to machine M2M domain, machine class Communication MTC field.
A device according to any one of claims 32 to 41, wherein the device is a terminal device.