CN111654914A

CN111654914A - Method, network equipment and terminal equipment for uplink data transmission

Info

Publication number: CN111654914A
Application number: CN202010295393.9A
Authority: CN
Inventors: 曾广珠
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-09-08
Filing date: 2015-09-08
Publication date: 2020-09-11
Anticipated expiration: 2035-09-08
Also published as: CN106507486A; CN106507486B; CN111654914B; WO2017041683A1

Abstract

The invention discloses a method, terminal equipment and network equipment for uplink data transmission, wherein the method comprises the following steps: the network equipment generates configuration information of a Competitive Transmission Unit (CTU) of a first uplink sub-band, wherein the first sub-band is one of a plurality of uplink sub-bands, the plurality of uplink sub-bands have respective specific configurations, and the CTU is a resource unit used for performing authorization-free transmission on the first sub-band; the network device transmits the configuration information of the CTU. The method, the terminal device and the network device for transmitting the uplink data, provided by the embodiment of the invention, enable the terminal device to quickly and effectively acquire the information of the CTU, so as to perform authorization-free transmission, thereby improving the efficiency of system data transmission.

Description

Method, network equipment and terminal equipment for uplink data transmission

Technical Field

The present invention relates to the field of communications, and in particular, to a method, a network device, and a terminal device for uplink data transmission in the field of communications.

Background

With the continuous evolution of wireless cellular networks, the next generation mobile Communication system will support not only conventional Communication but also Machine to Machine (Machine to Machine, abbreviated as "M2M") Communication, or so-called Machine Type Communication (abbreviated as "MTC") Communication. By the year 2020, MTC devices connected to the network are predicted to reach 500 to 1000 billion, which is far beyond the number of connections at present. For M2M type services, the requirements for the network are very different due to the wide variety of services. In general, there are several requirements as follows: (I) reliable transmission, but not sensitive to delay; (II) low latency, high reliability transmission.

In order to solve a large amount of MTC services in a future network and meet low-delay and high-reliability service transmission, a scheme of uplink Grant Free (Grant Free) transmission is provided. The Grant Free transmission can be understood as a contention-based uplink service data transmission, which is substantially different from data transmission of a Wireless Local Area Network (WLAN) and an existing random access procedure in a Long Term Evolution LTE (Long Term Evolution) system. The uplink unlicensed transmission can be applied to various existing communication systems, and in each communication system, especially in a communication system adopting a frequency division multiplexing technology or an improved frequency division multiplexing technology, there is no mechanism for enabling the terminal device to quickly and efficiently obtain and use Grant Free transmission resources.

Disclosure of Invention

The embodiment of the invention provides a method for transmitting uplink data, network equipment and terminal equipment, which can enable the terminal equipment to quickly and effectively acquire information of an authorization-free transmission resource, thereby improving the efficiency of a system for transmitting data.

In a first aspect, a method for uplink data transmission is provided, including:

the network equipment generates configuration information of a Competitive Transmission Unit (CTU) of a first uplink sub-band, wherein the first sub-band is one of a plurality of uplink sub-bands, the plurality of uplink sub-bands have respective specific configurations, and the CTU is a resource unit used for performing authorization-free transmission on the first sub-band;

and the network equipment transmits the configuration information of the CTU.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the sending, by the network device, the configuration information of the CTU includes:

and the network equipment transmits the configuration information of the CTU in a broadcasting mode through a system information block.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the sending, by the network device, the configuration information of the CTU includes:

and the network equipment sends the configuration information of the CTU to terminal equipment through a downlink control channel of a downlink second sub-band corresponding to the first sub-band.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the sending, by the network device, the configuration information of the CTU to a terminal device through a downlink control channel of a downlink second subband corresponding to the first subband includes:

and the network equipment sends the configuration information of the CTU in the corresponding frame of the first sub-band to the terminal equipment by using a frame as a period through a downlink control channel of a downlink second sub-band corresponding to the first sub-band.

With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the sending, by the network device, the configuration information of the CTU to a terminal device through a downlink control channel of a downlink second subband corresponding to the first subband includes:

and the network equipment sends the configuration information of the CTU in the corresponding subframe of the first sub-band to the terminal equipment through a downlink control channel in the subframe of a downlink second sub-band corresponding to the first sub-band.

With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the sending, by the network device, the configuration information of the CTU includes:

and the network equipment transmits the configuration information of the CTU to terminal equipment through Radio Resource Control (RRC) signaling.

With reference to the first aspect and any one possible implementation manner of the first to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner of the first aspect, the configuration information of the CTU of the first subband includes configuration information of at least one CTU, and the configuration information of the at least one CTU includes time-frequency resources, a transmission multiplexing mode, a code division multiplexing mode, and code information.

With reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

With reference to the sixth or seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the code division multiplexing mode is code division multiple access CDMA, low density signature LDS, or sparse code multiple access SCMA, and the code information corresponds to the code division multiplexing mode and is a CDMA code, an LDS sequence, or an SCMA codebook.

With reference to the first aspect and any one possible implementation manner of the first to eighth possible implementation manners of the first aspect, in a ninth possible implementation manner of the first aspect, the first subband is a subband in an uplink frequency band in a frequency division multiplexing FDD system; or

The first sub-band is a sub-band in a frequency band corresponding to an uplink time period in a time division multiplexing TDD system.

In a second aspect, a method for uplink data transmission is provided, including:

a terminal device receives configuration information of a Contention Transmission Unit (CTU) of a first sub-band sent by a network device, wherein the first sub-band is one of a plurality of uplink sub-bands, the plurality of uplink sub-bands have respective specific configurations, and the CTU is a resource unit used for performing authorization-free transmission on the first sub-band;

and the terminal equipment determines the CTU used for the authorization-free transmission on the first sub-band according to the configuration information of the CTU.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the receiving, by the terminal device, configuration information of a contention transmission unit CTU of a first subband, where the configuration information is sent by a network device, includes:

and the terminal equipment receives the configuration information of the CTU, which is sent by the network equipment in a broadcast mode through a system information block.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the receiving, by the terminal device, configuration information of a contention transmission unit CTU of a first subband, where the configuration information is sent by a network device, includes:

and the terminal equipment receives the configuration information of the CTU, which is sent to the terminal equipment by the network equipment through a downlink control channel of the second sub-band, on a downlink second sub-band corresponding to the first sub-band.

With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the receiving, by the terminal device, configuration information of the CTU, sent by the network device to the terminal device through a downlink control channel of the second subband, on a downlink second subband corresponding to the first subband includes:

and the terminal equipment receives the configuration information of the CTU in the corresponding frame of the first sub-band, which is sent to the terminal equipment by the network equipment through a downlink control channel of the second sub-band by taking a frame as a period, on a downlink second sub-band corresponding to the first sub-band.

With reference to the second possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the receiving, by the terminal device, configuration information of the CTU, sent by the network device to the terminal device through a downlink control channel of the second subband, on a downlink second subband corresponding to the first subband includes:

and the terminal equipment receives the configuration information of the CTU in the corresponding subframe of the first subband, which is sent to the terminal equipment by the network equipment through a downlink control channel in the subframe of the second subband, on a downlink second subband corresponding to the first subband.

With reference to the second aspect, in a fifth possible implementation manner of the second aspect, the receiving, by the terminal device, configuration information of a contention transmission unit CTU of a first subband, where the configuration information is sent by a network device, includes:

and the terminal equipment receives the configuration information of the CTU, which is sent to the terminal equipment by the network equipment through a Radio Resource Control (RRC) signaling.

With reference to the second aspect and any one possible implementation manner of the first to fifth possible implementation manners of the second aspect, in a sixth possible implementation manner of the second aspect, the configuration information of the CTU of the first subband includes configuration information of at least one CTU, and the configuration information of the at least one CTU includes time-frequency resources, a transmission multiplexing mode, a code division multiplexing mode, and code information.

With reference to the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

With reference to the sixth or seventh possible implementation manner of the second aspect, in an eighth possible implementation manner of the second aspect, the code division multiplexing mode is code division multiple access CDMA, low density signature LDS, or sparse code multiple access SCMA, and the code information corresponds to the code division multiplexing mode and is a CDMA code, an LDS sequence, or an SCMA codebook.

With reference to the second aspect and any one possible implementation manner of the first to eighth possible implementation manners of the second aspect, in a ninth possible implementation manner of the second aspect, the first subband is a subband in an uplink frequency band in a frequency division multiplexing FDD system; or

In a third aspect, a network device is provided, including:

a generating module, configured to generate configuration information of a contention transmission unit CTU of a first uplink subband, where the first subband is one of multiple uplink subbands, the multiple uplink subbands have respective specific configurations, and the CTU is a resource unit for unlicensed transmission on the first subband;

and the sending module is used for sending the configuration information of the CTU generated by the generating module.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the sending module is specifically configured to:

transmitting configuration information of the CTU in a broadcast form through a system information block.

With reference to the third aspect, in a second possible implementation manner of the third aspect, the sending module is specifically configured to:

and sending the configuration information of the CTU to terminal equipment through a downlink control channel of a downlink second sub-band corresponding to the first sub-band.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the sending module is specifically configured to:

and sending the configuration information of the CTU in the corresponding frame of the first sub-band to the terminal equipment by using a frame as a period through a downlink control channel of a downlink second sub-band corresponding to the first sub-band.

With reference to the second possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the sending module is specifically configured to:

and sending the configuration information of the CTU in the corresponding subframe of the first sub-band to the terminal equipment through a downlink control channel in the subframe of a downlink second sub-band corresponding to the first sub-band.

With reference to the third aspect, in a fifth possible implementation manner of the third aspect, the sending module is specifically configured to:

and transmitting the configuration information of the CTU to terminal equipment through Radio Resource Control (RRC) signaling.

With reference to the third aspect and any one possible implementation manner of the first to fifth possible implementation manners of the third aspect, in a sixth possible implementation manner of the third aspect, the configuration information of the CTU of the first subband includes configuration information of at least one CTU, and the configuration information of the at least one CTU includes a time-frequency resource, a transmission multiplexing mode, a code division multiplexing mode, and code information.

With reference to the sixth possible implementation manner of the third aspect, in a seventh possible implementation manner of the third aspect, the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

With reference to the sixth or seventh possible implementation manner of the third aspect, in an eighth possible implementation manner of the third aspect, the code division multiplexing mode is code division multiple access CDMA, low density signature LDS, or sparse code multiple access SCMA, and the code information corresponds to the code division multiplexing mode and is a CDMA code, an LDS sequence, or an SCMA codebook.

With reference to the third aspect and any one possible implementation manner of the first to eighth possible implementation manners of the third aspect, in a ninth possible implementation manner of the third aspect, the first subband is a subband in an uplink frequency band in a frequency division multiplexing FDD system; or

In a fourth aspect, a terminal device is provided, which includes:

a receiving module, configured to receive configuration information of a contention transmission unit CTU of a first sub-band sent by a network device, where the first sub-band is one of multiple uplink sub-bands, the multiple uplink sub-bands have respective specific configurations, and the CTU is a resource unit used for unlicensed transmission on the first sub-band;

a determining module, configured to determine, according to the configuration information of the CTU received by the receiving module, the CTU used for the unlicensed transmission on the first subband.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the receiving module is specifically configured to:

and receiving the configuration information of the CTU, which is sent by the network equipment in a broadcast mode through a system information block.

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the receiving module is specifically configured to:

and receiving, on a downlink second subband corresponding to the first subband, configuration information of the CTU, which is sent by the network device through a downlink control channel of the second subband.

With reference to the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the receiving module is specifically configured to:

and receiving, on a downlink second subband corresponding to the first subband, configuration information of the CTU in a frame corresponding to the first subband, where the frame is sent by the network device through a downlink control channel of the second subband in a frame period.

With reference to the second possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the receiving module is specifically configured to:

and receiving, on a downlink second subband corresponding to the first subband, configuration information of the CTU in a corresponding subframe of the first subband, where the configuration information is sent by the network device through a downlink control channel in a subframe of the second subband.

With reference to the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the receiving module is specifically configured to:

and receiving the configuration information of the CTU, which is sent by the network equipment through Radio Resource Control (RRC) signaling.

With reference to the fourth aspect and any one possible implementation manner of the first to fifth possible implementation manners of the fourth aspect, in a sixth possible implementation manner of the fourth aspect, the configuration information of the CTU of the first subband includes configuration information of at least one CTU, and the configuration information of the at least one CTU includes time-frequency resources, a transmission multiplexing mode, a code division multiplexing mode, and code information.

With reference to the sixth possible implementation manner of the fourth aspect, in a seventh possible implementation manner of the fourth aspect, the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

With reference to the sixth or seventh possible implementation manner of the fourth aspect, in an eighth possible implementation manner of the fourth aspect, the code division multiplexing mode is code division multiple access CDMA, low density signature LDS, or sparse code multiple access SCMA, and the code information corresponds to the code division multiplexing mode and is a CDMA code, an LDS sequence, or an SCMA codebook.

With reference to the fourth aspect and any one possible implementation manner of the first to eighth possible implementation manners of the fourth aspect, in a ninth possible implementation manner of the fourth aspect, the first subband is a subband in an uplink frequency band in a frequency division multiplexing FDD system; or

Based on the above technical solution, in a system including multiple sub-bands with respective specific configurations, the network device, and the network device according to the embodiments of the present invention generate and transmit configuration information of a CTU of an uplink sub-band, so that the terminal device can quickly and effectively obtain information of the CTU to perform authorization-free transmission, thereby improving data transmission efficiency of the system.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic architecture diagram of a communication system to which an embodiment of the present invention is applied.

Fig. 2 is a schematic diagram of the definition of a CTU according to an embodiment of the present invention.

Fig. 3 is a new 5G technique based on F-OFDM time-frequency resource allocation.

Fig. 4 is a schematic flow chart of a method for uplink data transmission according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of an encoding process of uplink transmission according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of a mapping process of an LDS according to an embodiment of the present invention.

Fig. 7 is a diagram illustrating a method for uplink data transmission according to an embodiment of the present invention.

Fig. 8 is a schematic flow chart of a method for uplink data transmission according to an embodiment of the present invention.

Fig. 9 is a diagram illustrating a method for uplink data transmission according to another embodiment of the present invention.

Fig. 10 is a diagram illustrating a method for uplink data transmission according to another embodiment of the present invention.

Fig. 11 is a diagram illustrating a method for uplink data transmission according to another embodiment of the present invention.

Fig. 12 is a schematic block diagram of a network device of one embodiment of the present invention.

Fig. 13 is a schematic block diagram of a terminal device of one embodiment of the present invention.

Fig. 14 is a schematic block diagram of a network device of yet another embodiment of the present invention.

Fig. 15 is a schematic block diagram of a terminal device of still another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on 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 the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) System, a Long Term Evolution (LTE) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a world wide microwave Access (world wide Interoperability for microwave communications (WiMAX) Communication System, and a future 5G Communication System.

It should be further understood that the technical solution of the embodiment of the present invention may also be applied to various communication systems based on non-orthogonal Multiple Access technologies, such as Sparse Code Multiple Access (SCMA) systems, where SCMA may also be referred to as other names in the communication field; further, the technical solution of the embodiment of the present invention may be applied to a Multi-Carrier transmission system using a non-Orthogonal multiple access technology, for example, a non-Orthogonal multiple access technology Orthogonal Frequency Division Multiplexing (OFDM for short), a Filter Bank Multi-Carrier (FBMC for short), a general Frequency Division Multiplexing (GFDM for short), a Filtered Orthogonal Frequency Division Multiplexing (Filtered-OFDM for short) system, and the like.

Various embodiments are described herein in connection with a terminal device. A terminal device may communicate with one or more core networks via a Radio Access Network (RAN), and a terminal device may refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G network, etc.

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

Moreover, various aspects or features of the invention may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard Disk, floppy Disk, magnetic strips, etc.), optical disks (e.g., CD (Compact Disk), DVD (Digital Versatile Disk), etc.), smart cards, and flash Memory devices (e.g., EPROM (Erasable Programmable Read-Only Memory), card, stick, or key drive, etc.). In addition, 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" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

The next-generation mobile Communication system will support not only conventional Communication but also Machine-to-Machine (Machine to Machine, abbreviated as "M2M") Communication, or so-called Machine Type Communication (abbreviated as "MTC") Communication. By the year 2020, MTC devices connected to the network are predicted to reach 500 to 1000 billion, which is far beyond the number of connections at present. For M2M type services, the requirements for the network are very different due to the wide variety of services. In general, there are several requirements as follows: (I) reliable transmission, but not sensitive to delay; (II) low latency, high reliability transmission.

And the method is easy to process for reliable transmission and delay insensitive services. However, for low-delay and high-reliability traffic, not only the transmission delay is required to be short, but also the reliability is required, such as V2V (Vehicle to Vehicle) traffic. If the transmission is unreliable, the transmission delay is too large due to retransmission, and the requirement cannot be met.

Due to the large number of connections, there is a great difference between future wireless communication systems and existing communication systems. A large number of connections requires more resources to be consumed for accessing the terminal device and more resources to be consumed for the transmission of scheduling signaling related to the data transmission of the terminal device.

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

The network in the embodiment of the present invention may be a Public Land mobile network (PLMN, which is simply referred to as "PLMN"), a D2D network, an M2M network, or other networks, and fig. 1 is a simplified schematic diagram of an example, and the network may further include other network devices, which are not shown in fig. 1.

In order to solve a large amount of MTC services in a future network and meet the requirements of low-delay and high-reliability service transmission, the invention provides a scheme of uplink Grant Free (Grant Free) transmission. The unlicensed transmission here may be for uplink data transmission. The unauthorized transmission can be understood as any one of the following meanings, or a plurality of meanings, or a combination of partial technical features in the plurality of meanings or other similar meanings:

1. the unlicensed transmission may refer to: the network equipment allocates and informs the terminal equipment of a plurality of transmission resources in advance; when the terminal equipment has the requirement of uplink data transmission, selecting at least one transmission resource from a plurality of transmission resources pre-allocated by the network equipment, and sending uplink data by using the selected transmission resource; and the network equipment detects the uplink data sent by the terminal equipment on one or more transmission resources in the plurality of pre-allocated transmission resources. The detection may be blind detection, or detection according to a certain control field in the uplink data, or detection in other manners.

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

3. The unlicensed transmission may refer to: the method comprises the steps of obtaining information of a plurality of pre-allocated transmission resources, selecting at least one transmission resource from the plurality of transmission resources when uplink data transmission is required, and sending the uplink data by using the selected transmission resource. The manner of acquisition may be acquired from a network device.

4. The unlicensed transmission may refer to: the method for realizing uplink data transmission of the terminal equipment without dynamic scheduling of the network equipment can be a scheduling mode that the network equipment indicates transmission resources for each uplink data transmission of the terminal equipment through signaling. Alternatively, implementing uplink data transmission of a terminal device may be understood as allowing data of two or more terminal devices to be transmitted on the same time-frequency resource. Alternatively, the transmission resource may be one or more transmission time units of transmission time after the time when the UE receives the signaling. One TTI may refer to the minimum time unit of one Transmission, such as a Transmission Time Interval (TTI), which may be 1ms, or may be a predetermined TTI.

5. The unlicensed transmission may refer to: the terminal equipment carries out uplink data transmission without authorization of the network equipment. The authorization may refer to that the terminal device sends an uplink scheduling request to the network device, and the network device sends an uplink authorization to the terminal device after receiving the scheduling request, where the uplink authorization indicates an uplink transmission resource allocated to the terminal device.

6. The unlicensed transmission may refer to: a contention transmission mode, specifically, may refer to that multiple terminals perform uplink data transmission simultaneously on the same pre-allocated time-frequency resource without requiring a base station to perform authorization.

The data may include service data or signaling data.

The blind detection may be understood as a detection of data that may arrive without predicting whether data arrives. The blind detection may also be understood as a detection without an explicit signaling indication.

The transmission resources may include, but are not limited to, a combination of one or more of the following: time domain resources such as radio frames, subframes, symbols, etc.; frequency domain resources such as subcarriers, resource blocks, etc.; spatial domain resources such as transmit antennas, beams, etc.; code domain resources such as SCMA codebooks, Low Density Signature (LDS) groups, CDMA code groups, etc.; and (4) uplink pilot frequency resources.

The transmission resources as above may be transmitted according to control mechanisms including, but not limited to: uplink power control, such as uplink transmit power upper limit control; setting a modulation coding mode, such as the size of a transmission block, a code rate, a modulation order and the like; a retransmission mechanism, such as a Hybrid Automatic Repeat reQuest (HARQ) mechanism.

A Contention Transmission Unit (CTU) may be a basic Transmission resource for unlicensed Transmission. The CTU may refer to transmission resources combining time, frequency and code domain, or may refer to transmission resources combining time, frequency and pilot, or may refer to transmission resources combining time, frequency, code domain and pilot. The access region of the CTU may refer to a time-frequency region for unlicensed transmission.

The patent application with the application name of "System and Method for uplink grant-free Transmission Scheme" of the patent number PCT/CN2014/073084 provides a technical Scheme of uplink authorization-free Transmission.

The PCT/CN2014/073084 application introduces that radio resources can be divided into various CTUs, and a UE is mapped to a certain CTU. Each CTU may be assigned a set of codes, which may be a set of CDMA codes, a set of SCMA codebooks, or a set of LDS or a set of signatures (signatures), etc. Each code may correspond to a set of pilots. The user may select a code and a pilot in the set of pilots corresponding to the code for uplink transmission. The contents of the application PCT/CN2014/073084 may also be understood as being incorporated by reference as part of the contents of the embodiments of the present invention, and will not be described in detail.

After accessing the network device 102, the terminal device 104 may report its own capability information to the network device 102, where the capability information may include information indicating whether there is an uplink capability for unlicensed transmission. Thus, the network device 102 may communicate with the terminal device by using an uplink authorization-free transmission mechanism or a conventional request-authorization mechanism according to the capability information reported by each terminal device. Optionally, the network device 102 may notify the terminal device of necessary information for uplink unlicensed transmission, for example, the network device 102 may instruct the terminal device to perform uplink unlicensed transmission, and send search space information, CAR information, CTU information, modulation and coding scheme information to the terminal device, where each terminal device is mapped to one or more CTUs, and the mapping rule may be predefined or configured by the network device. The terminal device may select a code and a pilot in a pilot group corresponding to the code for uplink transmission, which is not limited in this embodiment of the present invention. It should be understood that the embodiment of the present invention may also be applied to other communication systems besides fig. 1, and the embodiment of the present invention is not limited thereto.

Fig. 2 exemplarily shows four CARs 202-208, wherein the system available bandwidth is divided into a plurality of different time-frequency regions, each CAR occupies different Resource blocks, wherein optionally the number of Resource blocks occupied by each CAR may be predefined, e.g. Resource Blocks (RB) 1-4 of the frequency band occupied by CAR 202. As shown in fig. 2, each CAR may be further divided into at least one CTU, where each CTU is a combination of a specific time, frequency, signature, and pilot, and each CAR in fig. 2 corresponds to the same CTU mapping relationship, and here, for illustration, the mapping relationships of four CARs are shown from different perspectives, respectively, but the embodiment of the present invention is not limited thereto. As shown in fig. 2, each CAR supports 6 signatures (S1-S6), each signature may correspond to 6 pilots, thus forming 36 pilots (P1-P36) corresponding to 36 CTUs, but the embodiment of the invention is not limited thereto.

It should be understood that fig. 2 exemplarily shows four CARs and each CAR includes 36 CTUs, but embodiments of the present invention may also include other numbers of CARs and each CAR may include other numbers of CTUs, which are not limited by the embodiments of the present invention.

A filtered orthogonal frequency Division multiplexing (F-OFDM) technique applied to an embodiment of the present invention will be described below.

In future wireless communication systems, a mobile broadband network requires a wide spectrum resource to realize high-speed and large-capacity data transmission. The expected spectral bandwidth in the 5G technology may reach 100MHz-400MHz, and in the high frequency band above 6GHz, the maximum spectral bandwidth may even reach 1 GHz. Such a large spectral bandwidth, although meaningful for satisfying high-rate and high-capacity data transmission, is not easily applicable to a variety of application scenarios in 5G technology.

Fig. 3 shows a new 5G technique based on F-OFDM time-frequency resource allocation. F-OFDM divides the frequency spectrum into a plurality of sub-bands, each having a specific sub-carrier bandwidth, a Transmission Time Interval (TTI) length, a symbol length or number of symbols in a TTI, and a Cyclic Prefix (CP) length. The parameter configuration of each sub-band is not invariable, but can be flexibly adapted according to the condition of the traffic load. Each parameter configuration sub-band is suitable for some specific Service types, as shown in fig. 3, conventional voice/video, Internet of Things (IOT), real-time Internet of vehicles, Multimedia Broadcast Multicast Service (MBMS) Service are respectively distributed in the specific sub-bands. It is easy to see that the sub-band configuration of the IOT service has a narrow sub-carrier bandwidth and a large transmission delay, which is of great significance to the IOT devices with low power consumption and high density distribution; and the subband configuration of the real-time Internet of vehicles service has the maximum subcarrier bandwidth and the minimum transmission time delay.

In the F-OFDM technique according to the embodiment of the present invention, the frequency spectrum may be divided into a plurality of subbands, and one subband has a set of subband parameters (the parameter may be numerology). The parameters (numerology) of different subbands may be the same or different. The parameters of the sub-band may include at least one of sub-carrier interval, Transmission Time Interval (TTI) length, symbol number, and Cyclic Prefix (CP) length. The parameters of the sub-band can be configured in advance, and can also be flexibly adapted according to the condition of the service load. Different types of traffic may use different subbands. Such as: traditional voice/video, Internet of Things (IOT), real-time Internet of vehicles, and Multimedia Broadcast Multicast Service (MBMS) are respectively distributed in different sub-bands.

However, the F-OFDM technique shown in fig. 3 has difficulty in supporting Grant Free transmission. In a system using the F-OFDM technology, resource blocks CTU for Grant Free transmission are distributed on different sub-bands, parameters such as TTI length, sub-carrier bandwidth, number of symbols in TTI, CP length, etc. of the resource blocks on different sub-bands are not completely the same, and the sub-band configuration in the system may be adjusted along with the change of the system load. The influence of the above factors makes it difficult to realize Grant Free transmission of the terminal device in a system using the F-OFDM technology, and it is difficult for the terminal device to obtain a CTU suitable for its own needs. If the network device simply notifies the terminal device of the resource blocks CTU of Grant Free transmission required by the terminal device, the terminal device contends. The network device informs the terminal device of the information of the CTUs, which consumes a lot of downlink resources, the system transmission efficiency is low, and the terminal device does not select among a lot of different CTUs.

Thus, the terminal device may receive the subband configuration information broadcast by the network device. The subband configuration information describes not only all frequency bands of the current system, but also parameter configuration information of each frequency band, including subcarrier bandwidth of the subband, TTI length, symbol length or number of symbols in TTI, CP length, and the like. And the terminal equipment selects a proper sub-band from the frequency band of the system according to the sub-band configuration information, acquires the configuration information of the CTU on the sub-band so as to acquire the CTU, and uses the acquired CTU to transmit Grant Free.

The embodiment of the invention is used for solving the problems of how to acquire the CTU and use the acquired CTU for the Grant Free transmission when the terminal equipment adopts the Grant Free transmission mode in the uplink direction in a system using the F-OFDM technology.

Fig. 4 shows a method 300 for uplink data transmission according to an embodiment of the present invention. The method 300 is performed by a network device, the method 300 comprising:

s310, a network device generates configuration information of a Competitive Transmission Unit (CTU) of a first uplink sub-band, wherein the first sub-band is one of a plurality of uplink sub-bands, the plurality of uplink sub-bands have respective specific configurations, and the CTU is a resource unit used for license-free transmission on the first sub-band;

s320, the network device sends the configuration information of the CTU.

Preferably, the first subband is one of a plurality of subbands used for uplink in the filtered orthogonal frequency division multiplexing F-OFDM system.

Therefore, in the method for uplink data transmission according to the embodiment of the present invention, in a system including a plurality of subbands having respective specific configurations, a network device generates and transmits configuration information of a CTU of an uplink subband, so that a terminal device can quickly and effectively acquire information of the CTU to perform authorization-free transmission, thereby improving efficiency of data transmission of the system.

Optionally, in this embodiment of the present invention, the first subband is a subband in an uplink frequency band in an FDD system; or

The first sub-band is a sub-band in a frequency band corresponding to an uplink time period in the time division multiplexing TDD system.

Specifically, the F-OFDM system according to the embodiment of the present invention may include a Frequency Division Duplex (FDD) system or a Time Division Duplex (TDD) system. In an FDD system, a spectrum resource may consist of a downlink frequency band and an uplink frequency band; in a TDD system, a spectrum resource may be composed of a downlink period and an uplink period. That is, the downlink frequency band referred to herein is a set of transmission resources including time domain resources and frequency domain resources for performing downlink transmission in the FDD system; the downlink time period referred to herein refers to a set of transmission resources including time domain resources and frequency domain resources for downlink transmission in the TDD system. The uplink frequency band referred to herein is a group of transmission resources including time domain resources and frequency domain resources for performing uplink transmission in an FDD system; the uplink time period referred to herein refers to a set of transmission resources including time domain resources and frequency domain resources for uplink transmission in the TDD system.

It should be understood that the embodiment of the present invention is exemplified by the F-OFDM system, but is not limited to the F-OFDM system, and can also be applied to other similar systems, and the embodiment of the present invention is not limited thereto.

The downlink frequency band (or downlink period) and the uplink frequency band (or uplink period) each have a plurality of sub-bands. The plurality of sub-bands have respective specific configurations. I.e., each subband has a subband bandwidth, TTI length, symbol length or number of symbols in the TTI, and CP length specific to that subband. The parameter configuration of each sub-band is not invariable, but can be flexibly adapted according to the condition of the traffic load.

The embodiment of the present invention is described by taking an FDD system as an example, and the TDD system is similar to the FDD system in the scheme, and the difference is that the uplink time period of the TDD system corresponds to the uplink frequency band of the FDD system, and the downlink time period of the TDD system corresponds to the downlink frequency band of the FDD system, which is not described herein again.

In S310, the network device generates configuration information of a contention transmission unit CTU of a first subband in the uplink. Specifically, the network device generates configuration information of CTUs of a sub-band of the uplink frequency band. The presentation form of the CTU may be various, and the configuration information of the CTU may include information of a subband to which the CTU belongs, and information such as a subcarrier bandwidth, a TTI length, a symbol length or number in a TTI, and a CP length of the CTU can be determined according to the information of the subband. The time-frequency range of the CTU in the sub-band may be a time-frequency resource block of one atom, a time-frequency resource block in multiple frequency domains, or a time-frequency resource block in multiple time domains. The system defines a combination form of a plurality of codes and pilot frequencies, and each CTU can simultaneously support a plurality of users to transmit data in a code division multiplexing mode.

Optionally, in this embodiment of the present invention, the configuration information of the CTU of the first subband (i.e., the subband of the uplink frequency band) includes configuration information of at least one CTU, where the configuration information of the at least one CTU includes time-frequency resources, a transmission multiplexing mode, a code division multiplexing mode, and code information.

Specifically, the configuration information of the CTUs of the first sub-band may include an identification of the first sub-band, the number of CTUs in the first sub-band, and configuration information of each CTU in the first sub-band. The configuration information of each CTU may include time-frequency resources, such as a starting Resource Block (RB) and the number of RBs; a feedback mode, for example, whether the CTU supports Hybrid Automatic Repeat reQuest (HARQ) feedback or not; code division multiplexing modes, such as specific code division multiplexing modes supported by the CTU, CDMA, LDS, SCMA, or the like; code information, which the network device informs the terminal device of the code information that it can use, such as CDMA codes, LDS sequences or SCMA codebooks, etc.; a transmission multiplexing mode, such as a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode, etc., by which the network device informs the terminal device whether the CTU allows a certain multiplexing scheme.

It should be understood that the SCMA codebook in the embodiment of the present invention includes at least two codewords, the SCMA codebook is used for indicating mapping relations between at least two data combinations and the at least two codewords, the codewords are multidimensional complex vectors and are used for indicating mapping relations between data and a plurality of modulation symbols, and the modulation symbols include at least one zero modulation symbol and at least one non-zero modulation symbol.

Specifically, Sparse Code Multiple Access (SCMA) is a non-orthogonal Multiple Access technology, and those skilled in the art may refer to this technology as SCMA or other technology names instead of SCMA. According to the technology, a plurality of different data streams are transmitted on the same transmission resource by means of codebooks, wherein the codebooks used by the different data streams are different, and therefore the utilization rate of the resource is improved. The data streams may be from the same terminal device or from different terminal devices.

The SCMA employs a codebook that is a collection of two or more codewords.

The codeword may be a multi-dimensional complex field vector, the number of dimensions of which is two or more than two dimensions, and is used to represent a mapping relationship between data and two or more modulation symbols, the mapping relationship may be a direct mapping relationship, the modulation symbols include at least one zero modulation symbol and at least one non-zero modulation symbol, the data may be binary bit data or multivariate data, and the relationship between the zero modulation symbol and the non-zero modulation symbol may be that the number of the zero modulation symbols is not less than the number of the non-zero modulation symbols.

The codebook consists of two or more codewords. The codebook may represent a mapping of possible data combinations of data of a certain length to codewords in the codebook, which may be a direct mapping.

The SCMA technique implements extended transmission of data on multiple resource units by directly mapping data in a data stream into codewords, i.e., multidimensional complex vectors, in a codebook according to a certain mapping relationship. Direct mapping in SCMA techniques may be understood as meaning that the data in the data stream need not be mapped to intermediate modulation symbols, or have other intermediate processing. The data may be binary bit data or multivariate data, and the plurality of resource units may be resource units of time domain, frequency domain, space domain, time-frequency domain, time-space domain, and time-frequency space domain.

The code word adopted by the SCMA may have a certain sparsity, for example, the number of zero elements in the code word may be not less than the number of modulation symbols, so that a receiving end may utilize a multi-user detection technique to perform decoding with a lower complexity. Here, the above-listed relationship between the number of zero elements and the modulation symbol is only an exemplary sparse description, and the present invention is not limited thereto, and the ratio of the number of zero elements to the number of non-zero elements may be arbitrarily set as necessary.

In a communication system using SCMA, a plurality of users multiplex the same time-frequency resource block for data transmission. Each resource block is composed of a plurality of resource REs, where the REs may be subcarrier-symbol units in the OFDM technology, or resource units in time domain or frequency domain in other air interface technologies. For example, in an SCMA system including L terminal devices, the available resources are divided into several orthogonal time-frequency resource blocks, each resource block contains U REs, where the U REs may be located at the same position in the time domain. When terminal # L transmits data, the data to be transmitted is first divided into data blocks of S bit size, and each data block is searched by a codebook (determined by the network device and transmitted to the terminal device)Mapping of a data block into a set of modulation symbol sequences X # L ═ X # L comprising U modulation symbols₁，X#L₂，…，X#L_UAnd each modulation symbol in the sequence corresponds to one RE in the resource block, and then a signal waveform is generated according to the modulation symbol. For data blocks of size S bits, each codebook contains 2S different modulation symbol groups, corresponding to 2S possible data blocks.

The codebook may also be referred to as an SCMA codebook, which is a SCMA codeword set, and an SCMA codeword is a mapping relation from information bits to modulation symbols. That is, the SCMA codebook is a set of the above mapping relationships.

In the SCMA, a group modulation symbol X # k corresponding to each terminal device is { X # k ═ X # k-₁，X#k₂，…，X#k_LAt least one symbol is a zero symbol and at least one symbol is a non-zero symbol. That is, for data of one terminal device, only a part of REs (at least one RE) among the L REs carries the data of the terminal device.

Fig. 5 is a schematic diagram illustrating a bit mapping process (or coding process) of the SCMA by taking an example of multiplexing 6 data streams with 4 resource units, where as shown in fig. 5, 6 data streams form a packet and 4 resource units form a coding unit. One resource unit may be one subcarrier, or one RE, or one antenna port. In fig. 5, a connection line exists between a data stream and a resource unit to indicate that at least one data combination of the data stream will send a non-zero modulation symbol on the resource unit after codeword mapping, and no connection line exists between the data stream and the resource unit to indicate that all possible data combinations of the data stream will send zero modulation symbols on the resource unit after codeword mapping. The data combination of the data stream can be understood as set forth below, for example, in a binary bit data stream, 00, 01, 10, 11 are all possible two-bit data combinations. For convenience of description, data of each data stream is denoted as s1 to s6, a symbol transmitted by each resource unit is denoted as x1 to x4, and a connection between a data stream and a resource unit denotes that data of the data stream is spread to transmit a modulation symbol on the resource unit, where the modulation symbol may be a zero symbol (corresponding to a zero element) or a non-zero symbol (corresponding to a non-zero element), and a lack of a connection between a data stream and a resource unit denotes that data of the data stream is spread to not transmit a modulation symbol on the resource unit.

As can be seen from fig. 5, the data of each data stream is spread and transmitted on multiple resource units, and the symbol transmitted by each resource unit is a superposition of the spread non-zero symbols of the data from multiple data streams. For example, data s3 of data stream 3 is spread to send non-zero symbols on resource unit 1 and resource unit 2, and data x2 sent by resource unit 3 is a superposition of the non-zero symbols obtained by spreading data s2, s4 and s6 of data stream 2, data stream 4 and data stream 6, respectively. Because the number of data streams can be larger than the number of resource units, the SCMA system can effectively increase the network capacity, including the number of accessible users and the spectrum efficiency of the system.

The codewords in the codebook are typically of the form:

moreover, the corresponding codebook typically has the form:

n is a positive integer greater than 1, and may be represented as the number of resource units included in one coding unit, or may be understood as the length of a codeword; q_mIs a positive integer greater than 1, indicates the number of codewords contained in the codebook, and corresponds to the modulation order, e.g., Q in Quadrature Phase Shift Keying (QPSK) or 4-order modulation_mIs 4; q is a positive integer, and Q is not less than 1 and not more than Q_m(ii) a Element c contained in codebook and codeword_n,qIs a plurality of c_n,qMathematically it can be expressed as:

c_n,q∈{0,α*exp(j*β)},1≤n≤N,1≤q≤Q_m

α can be any real number, β can be any value, N and Q_mMay be a positive integer.

And, the code word in the codebook may form a certain mapping relation with the data, for example, the code word in the codebook may form a mapping relation with 2-bit data.

For example, "00" may correspond to codeword 1, i.e.

"01" may correspond to codeword 2, i.e.

"10" may correspond to codeword 3, i.e.

"11" may correspond to codeword 4, i.e.

With reference to fig. 5, when there is a connection between a data stream and a resource unit, a codebook corresponding to the data stream and a codeword in the codebook should have the following characteristics: there is at least one codeword in the codebook to transmit a non-zero modulation symbol on the corresponding resource unit, e.g., there is a connection between the data stream 3 and the resource unit 1, then at least one codeword in the codebook corresponding to the data stream 3 satisfies c_1,q≠0，1≤q≤Q_m；

When there is no connection between the data stream and the resource unit, the codebook corresponding to the data stream and the codeword in the codebook should have the following characteristics: all code words in the codebook transmit zero modulation symbols on corresponding resource units, e.g. there is no connection between data stream 3 and resource unit 3, and then any code word in the codebook corresponding to data stream 3 satisfies c_3,q＝0，1≤q≤Q_m。

In summary, when the modulation order is QPSK, the codebook corresponding to data stream 3 in fig. 5 may have the following form and characteristics:

wherein, c_n,qα × exp (j × β),1 ≦ n ≦ 2,1 ≦ q ≦ 4, α and β may be any real number, for any q, 1 ≦ q ≦ 4, c_1,qAnd c_2,qNot simultaneously zero, and at least one group q₁And q is₂，1≤q₁，q₂Less than or equal to 4, so that

And is

For example, if the data s3 of the data stream 3 is "10", the data combination is mapped to a codeword, i.e. a 4-dimensional complex vector, according to the aforementioned mapping rule:

it should be understood that the LDS sequence in embodiments of the present invention may be at least one signature sequence in the LDS set. The LDS group comprises at least two signature sequences, the LDS group is used for indicating the mapping relation between at least two data combinations and the at least two signature sequences, the signature sequences are multidimensional complex vectors, the multidimensional vectors comprise at least one zero element and at least one non-zero element, the signature sequences are used for adjusting the amplitude and the phase of modulation symbols, and the modulation symbols are obtained by constellation mapping of data through modulation constellations.

Specifically, a Low Density Signature (LDS) technology is also a non-orthogonal multiple access and transmission technology, and may be referred to as other names in the field of communications. The technology superposes O (O is an integer not less than 1) data streams from one or more users on P (P is an integer not less than 1) subcarriers for transmission, wherein each data of each data stream is spread on the P subcarriers by means of sparse spreading. When the value of O is larger than P, the technology can effectively improve the network capacity, including the number of users which can be accessed by the system, the spectrum efficiency and the like. Therefore, LDS technology has attracted more and more attention as an important non-orthogonal access technology, and becomes an important alternative access technology for future wireless cellular network evolution.

As shown in fig. 5, the explanation is given by taking an example that 6 data streams multiplex 4 resource units, that is, O is 6 and P is 4, where O is a positive integer and indicates the number of data streams; p is a positive integer representing the number of resource units. One Resource Element may be a subcarrier, or a Resource Element (RE), or an antenna port. Wherein 6 data streams constitute a packet and 4 resource units constitute a coding unit.

In the bipartite graph shown in fig. 6, a connection line exists between a data stream and a resource unit to indicate that at least one data combination of the data stream exists, the data combination is constellation-mapped and amplitude-and-phase-adjusted to transmit a non-zero modulation symbol on the resource unit, and no connection line exists between the data stream and the resource unit to indicate that all possible data combinations of the data stream are constellation-mapped and amplitude-and-phase-adjusted to transmit a zero modulation symbol on the resource unit. The data combination of the data stream can be understood as set forth below, for example, in a binary bit data stream, 00, 01, 10, 11 are all possible data combinations of two bits of data. For convenience of description, data combinations to be transmitted for 6 data streams in the bipartite graph are sequentially denoted by s1 to s6, and modulation symbols transmitted on 4 resource elements in the bipartite graph are sequentially denoted by x1 to x 4.

As can be seen from the bipartite graph, after constellation mapping and amplitude and phase adjustment, the data combination of each data stream transmits modulation symbols on two or more resource units, and meanwhile, the modulation symbol transmitted by each resource unit is a superposition of the modulation symbols of the data combination of two or more data streams after respective constellation mapping and amplitude and phase adjustment. For example, the data combination s3 to be transmitted of the data stream 3 may be a non-zero modulation symbol transmitted on the resource unit 1 and the resource unit 2 after constellation mapping and amplitude and phase adjustment, and the modulation symbol x3 transmitted by the resource unit 3 is a superposition of the non-zero modulation symbols obtained after the data combinations s2, s4, and s6 to be transmitted of the data streams 2, 4, and 6 are respectively constellation mapping and amplitude and phase adjustment. Because the number of data streams can be larger than the number of resource units, the non-orthogonal multiple access system can effectively improve the network capacity, including the number of accessible users and the spectrum efficiency of the system.

Further, as shown in fig. 6, a modulation symbol obtained by constellation mapping of data (b1, b2) of the data stream is q, and each element in the signature sequence, that is, an adjustment factor, is used to adjust the phase and amplitude of the modulation symbol q, so as to obtain modulation symbols transmitted on each resource unit, which are q _ s1, q _ s2, q _ s3, and q _ s4, respectively.

It should be understood that the above list of SCMA codebook and LDS sequence is only an exemplary illustration, the present invention is not limited thereto, and CDMA codes, etc. may be listed, where the CDMA code may be at least one code in a CDMA code group. The specific role and usage of the CDMA code may be similar to those of the prior art, and a detailed description thereof is omitted here for the sake of avoiding redundancy.

It should be understood that the embodiment of the present invention may flexibly determine the configuration information of the CTU according to a specific implementation situation. For example, when the network device and the terminal device mutually agree on a transmission multiplexing mode (e.g., a space division multiplexing mode), the configuration information of the CTU may not include the transmission multiplexing mode. The network device and the terminal device directly perform transmission in a space division multiplexing mode by default, which is not limited in the embodiment of the present invention.

In S320, the network device sends the generated configuration information of the CTU of the sub-band of the uplink frequency band to the terminal device, so that the terminal device selects an appropriate CTU according to the configuration information of the CTU of the sub-band of the uplink frequency band, and performs the license-exempt transmission on the selected CTU. For the terminal device on the first sub-band, the network device sends the generated configuration information of the CTU of the first sub-band to the terminal device on the first sub-band.

The network device sends the configuration information of the CTU of the sub-band of the uplink frequency band, which may be in a broadcast or multicast manner or in a unicast manner, and this is not limited in this embodiment of the present invention. The terminal device may then select the CTUs on the subbands and determine at least one parameter of the code information, pilot, and modulation coding mode employed. And the terminal equipment performs authorization-free transmission on the CTU of the selected sub-band. In other words, the configuration information of the CTUs of a sub-band is all CTUs in a certain frame or sub-frame of a specific sub-band, the CTUs are used for uplink unlicensed transmission by the terminal device, the terminal device selects one or a group of CTUs randomly or according to a certain rule during transmission, and selects code and pilot resources in the CTUs from the selected CTUs.

Optionally, as an embodiment, the S320 network device sends the configuration information of the CTU, where the configuration information includes:

the network device transmits the configuration information of the CTU in the form of broadcasting through a system information block.

Specifically, a System Information Block (SIB) is included in the common control subband of the downlink band. In a specific example, it is assumed that the downlink frequency band is divided into a sub-band one, a common control sub-band and a sub-band three, and the uplink frequency band is divided into a sub-band one, a sub-band two and a sub-band three. It should be understood that the number of the sub-bands is only an example, and in practical applications, the number of the sub-bands, configuration parameters, and the like are dynamically configured by the system, and may be dynamically adjusted according to the traffic load.

In this example, the network device broadcasts configuration information of CTUs of a subband of an uplink frequency band to the terminal device through an SIB of a common control subband of a downlink frequency band. The configuration information of the CTUs of the sub-band is broadcasted and transmitted in the cell range through SIB.

As can be seen from a specific example shown in FIG. 7, the configuration information of CTUs in one frame for sub-band one and sub-band three of the uplink frequency band (CTU-11-5 to CTU-16-5, and the configuration information of CTU-31-5 and CTU-32-5) can be transmitted in the same SIB-1-5 of the common control sub-band of the downlink frequency band, and the configuration information of CTUs in one frame for sub-band two of the uplink frequency band (the configuration information of CTU-21-5 to CTU-24-5) can be transmitted in another separate SIB-2-5 of the common control sub-band of the downlink frequency band. Whether the configuration information of the CTUs of the sub-bands is transmitted in combination in the SIB may be determined according to whether the size of the SIB information container can accommodate the CTU configuration information of the multiple sub-bands.

When broadcasting in the common control sub-band (or referred to as a master sub-band), the network device may broadcast configuration information of a CTU of only one sub-band of the downlink frequency band at a time, or may also broadcast configuration information of CTUs of a group of sub-bands of the downlink frequency band at a time, which is not limited in this embodiment of the present invention.

The SIB is generally transmitted at a period of one or several frames, and indicates configuration information of the CTUs in the uplink frequency band within the range of one or several frames. All CTUs of the corresponding subband or subbands in the slot range of the next uplink frame or uplink frames can be included in one SIB. Specifically, the network device broadcasts the configuration information of the CTU through the SIB, and the organization form of the SIB is as follows:

wherein CTUConfigList includes all CTUs in the specified sub-band, and subbandID specifies the identity of the sub-band. In the CTUConfigList, there may be at most maxCTU ctuconfo resources, and each CTU is determined by parameters such as startRB, sizeInRB, harqMode, codeType, codeSetIndex, multipleMode, and the like. It should be noted that each CTU supports multiple users to transmit data simultaneously in a code division multiplexing manner, and the network device may specifically adopt a CDMA, LDS, or SCMA manner. The codeSetIndex specifies a range of sets of codes that can be selected by the user of the terminal device, which elements in the set can be defined in the standard. The user of the terminal device may select individual CTUs for transmission, or may select a group of CTUs at a time for transmission by Frequency Division Multiplexing (FDMA), Time Division Multiplexing (TDMA) or Space Division Multiplexing (SDMA), and the network device informs the terminal device via the multipleMode whether the CTU allows a certain transmission multiplexing mode, and if not, the multipleMode should be set to NONE. It should be understood that multipleMode may be set to FDMA, TDMA or SDMA only if the network equipment device allows the terminal device to use the transport multiplexing mode. And the network equipment determines whether to feed back the message of successful transmission according to the HarqMode for the user successfully transmitted in the CTU, and if the terminal equipment requires to feed back whether to successfully transmit in time, the CTU supporting HARQ feedback should be selected.

A specific example according to an embodiment of the present invention is described below. Fig. 8 shows a schematic flow chart of a method for uplink data transmission according to a specific embodiment of the present invention. When the terminal device and the network device perform uplink transmission in the F-OFDM using the unlicensed transmission mode, the following process 400 may be adopted:

s410, the network device sends SIB X including the configuration information of the subband to the terminal device. In other words, the network device broadcasts the configuration information of the subband of the uplink frequency band to the terminal device through the SIB on the downlink common control subband. The terminal device can acquire which sub-bands are configured in the current uplink frequency band in the system by acquiring the configuration information of the sub-bands. The terminal device generally selects a sub-band to transmit service data according to the characteristics of the service type.

S420, the network device sends SIB Y including the configuration information of the subband to the terminal device. In other words, the network device broadcasts the configuration information of the CTU of the subband of the uplink frequency band to the terminal device through the SIB on the downlink common control subband.

S430, the terminal device obtains the configuration information of the CTU in the subband according to the subband selected in S410 and the configuration information of the subband received in S420, selects a CTU time-frequency resource used for unlicensed transmission from the configuration information, and selects one or more codes from the plurality of codes according to a mode corresponding to the selected CTU to process the data. If the terminal device selects multiple codes, multiple data streams can be transmitted in the CTU in a code division multiplexing manner. If the terminal device determines to transmit data in a frequency division multiplexing, time division multiplexing or space division multiplexing manner to increase the reliability of transmission, the terminal device needs to select a plurality of CTUs corresponding to multipleMode.

Specifically, before performing uplink unlicensed transmission, the terminal device selects a subband for uplink transmission according to the characteristics of the service type, and then obtains configuration information of the CTU in the subband. The terminal equipment determines whether to transmit in one CTU or a group of CTUs according to the size of the data packet and the requirement of transmission quality. If the transmission is performed in a group of CTUs, it is further determined whether the transmission is performed in a frequency multiplexing manner or a time multiplexing manner, so as to determine whether the transmission is performed in a time-frequency resource block of one atom, or in time-frequency resource blocks of multiple frequency domains, or in time-frequency resource blocks of multiple time domains. Further, the terminal may randomly select the adopted CTU in these time-frequency resource blocks. The terminal equipment also selects and determines codes and pilot frequencies in the CTU in the selected CTU time-frequency resources, one CTU can simultaneously support the transmission of a plurality of users in a code division multiplexing mode, and a system defines a combination form of a plurality of codes and pilot frequencies.

And S440, the terminal equipment transmits the uplink data in an authorization-free transmission mode. The terminal device transmits data according to the CTU and the transmission mode thereof determined in S430. The network device receives data for unlicensed transmission in a CTU predetermined on a subband. If the CTU supports frequency, time, or space division multiplexing transmission, the network device may combine multiple possible similar CTUs for joint decoding. When the network equipment decodes, the blind detection is carried out according to the possible combination of the codes and the pilot frequency.

and the network equipment sends the configuration information of the CTU to the terminal equipment through a downlink control channel of a downlink second sub-band corresponding to the first sub-band.

Specifically, in the embodiment of the present invention, the CTU configuration information of the sub-band of the uplink frequency band may be broadcast and transmitted in each corresponding sub-band of the downlink frequency band. For example, CTU configuration Information of a sub-band of an uplink frequency band may be carried in Downlink Control Information (DCI) using a Physical Downlink Control Channel (PDCCH). The procedure for the physical uplink unlicensed transport channel is as follows:

TABLE 1 PDCCH configured by CTU-RNTI

DCI format	Search Space
		DCI format for grant free CTU	Common

The DCI format of the unlicensed transmission CTU is used for an uplink unlicensed channel. Transmitting the following information by means of the DCI format of the unlicensed transmission CTU:

wherein, Number of CTUs is the Number of CTUs, and the specific configuration of each CTU comprises: resource block allocation represents allocation of Resource blocks, Code type represents a Code type, codeSetIndex represents a set range of codes selectable by a user of the terminal equipment, Multiple mode represents a transmission multiplexing mode, Modulation and coding scheme represents a Modulation coding scheme, and Hart mode represents whether to feed back a message of successful transmission.

There are two methods for sending the CTU configuration information of the sub-band of the uplink frequency band in the sub-band of the uplink frequency band, one method is that a network device sends the CTU configuration information to a terminal device through a downlink control channel of a downlink second sub-band corresponding to the first sub-band, and the method includes:

In general, the subbands in the downlink frequency band of the F-OFDM system according to the embodiment of the present invention correspond to the subbands in the uplink frequency band one to one. And the sub-band of each downlink frequency band transmits the configuration information of the CTU of the corresponding sub-band of the uplink frequency band by taking one frame or several frames as a period. The configuration information of the CTUs of the sub-band of the uplink frequency band may include configuration information of all CTUs in one or several frames of the sub-band of the corresponding uplink frequency band. When the terminal device in the current sub-band transmits uplink data in an authorization-free transmission mode, one or more appropriate CTUs are selected from the configuration information of the CTUs in the sub-band for transmission, and the CTUs can be combined in a frequency division multiplexing, time division multiplexing or space division multiplexing mode to perform authorization-free transmission on the selected CTUs.

As shown in fig. 9, the sub-band one, the common control sub-band, and the sub-band three of the downlink frequency band correspond to the sub-band one, the sub-band two, and the sub-band three of the uplink frequency band, respectively. And the sub-band of each downlink frequency band transmits the configuration information of the CTU of the corresponding sub-band of the uplink frequency band by taking one frame as a period. The configuration information of the CTU of the sub-band one of the uplink frequency band in one frame (the configuration information of the CTU-11-7 to the CTU-16-7) can be transmitted in the resource block-1-7 in the sub-band one of the downlink frequency band; the configuration information of the CTU of the sub-band II of the uplink frequency band in one frame (the configuration information of the CTU-21-7 to the CTU-24-7) can be transmitted in the resource block-2-7 in the common control sub-band of the downlink frequency band; similarly, the configuration information of the CTU in sub-band three of the uplink frequency band (the configuration information of CTU-31-7 and CTU-32-7) in one frame can be transmitted in resource block-3-7 in the common control sub-band of the downlink frequency band.

Another method is that, a network device sends configuration information of the CTU to a terminal device through a downlink control channel of a downlink second sub-band corresponding to the first sub-band, including:

Specifically, the subbands in the downlink frequency band may correspond to the subbands in the uplink frequency band one to one. And the sub-band of the downlink frequency band transmits the configuration information of the CTU of the sub-frame of the sub-band of the uplink frequency band in a downlink control channel of one or more sub-frames. The configuration information of the CTUs of the sub-frame of the sub-band of the uplink frequency band includes configuration information of the CTUs of one or several sub-frames. When the terminal equipment in the sub-band of the current uplink frequency band transmits uplink data in an uplink sub-frame in an authorization-free transmission mode, selecting one or more appropriate CTUs from the CTUs of the corresponding downlink sub-frame for transmission. Multiple CTUs may be combined in a frequency, time, or space division multiplexed manner for unlicensed transmission over a selected CTU.

It should be understood that the embodiments of the present invention do not require that the configuration information of the CTU is transmitted in all the frames or subframes of the downlink sub-band. In particular, in a TDD system, the ratio of uplink and downlink subframes may not be the same. When the downlink subframes are more than the uplink subframes, some of the redundant downlink subframes do not have corresponding uplink subframes, and the downlink subframes may not transmit the configuration information of the CTU. When the downlink subframe is less than the uplink subframe, one downlink subframe may bind to a plurality of consecutive uplink subframes, and the downlink subframe may transmit configuration information of CTUs of the corresponding plurality of uplink subframes.

For example, in a TDD system, subframes of a downlink subband may not correspond to subframes of an uplink subband one to one. The number ratio of the uplink and downlink subframes may be 5:5, 8:2, 2:8, etc. If the number ratio of the uplink sub-frame to the downlink sub-frame is 5:5, the configuration information of the CTU of the sub-frame of the uplink sub-band corresponding to the downlink sub-frame may be transmitted. If the number ratio of uplink and downlink subframes is 8:2, the configuration information of CTUs of 8 uplink subframes may be transmitted in 2 downlink subframes. If the number ratio of the uplink and downlink subframes is 2:8, the configuration information of the CTU is transmitted only in the 2 downlink subframes corresponding to the uplink subframes. In addition, if one CTU occupies multiple subframes, the configuration information of the CTU may be sent only in a corresponding subframe, for example, only in a downlink subframe corresponding to a first uplink subframe corresponding to the CTU, which is not limited in this embodiment of the present invention.

As shown in fig. 10, the sub-band one, the common control sub-band, and the sub-band three of the downlink frequency band correspond to the sub-band one, the sub-band two, and the sub-band three of the uplink frequency band, respectively. And each sub-band of the downlink frequency band transmits the configuration information of the CTU of the sub-frame of the corresponding sub-band of the uplink frequency band on the sub-frame. The configuration information of the CTU of each subframe in the sub-band one of the uplink frequency band can be transmitted in the corresponding subframe in the sub-band one of the downlink frequency band, for example, the configuration information of the CTU-11-8 is transmitted on the resource block-1-8 of the first subframe of the frame, the configuration information of the CTU-12-8 is transmitted on the resource block of the third subframe of the frame, the configuration information of the CTU-13-8 is transmitted on the resource block of the second subframe of the frame, and so on. The transmission of the configuration information of the CTUs of the subframes of other subbands is similar and is not described herein again.

and the network equipment transmits the configuration information of the CTU to the terminal equipment through Radio Resource Control (RRC) signaling.

Specifically, the configuration information of the CTU of the sub-band of the uplink frequency band is separately transmitted to the terminal device by the network device through Radio Resource Control (RRC) connection with the terminal device. In one example, the configuration information of the CTU of the sub-band may include CTU resources selectable by the terminal device for license-exempt transmission, and may also specify an identifier of the sub-band when the terminal device communicates.

The configuration information of the CTU of the sub-band may be sent to the terminal device through the network device during RRC connection configuration (RRCConnectionSetup) or RRC connection reconfiguration (RRCConnectionReconfiguration), or may be sent through a special message. After receiving the configuration information of the CTU of the sub-band, the terminal device may perform uplink grant-free transmission in a time period allowed by the configuration information of the CTU of the sub-band. The configuration information of the CTU of the sub-band in the RRC signaling may be subbbandcttuconfig, which is as follows:

therefore, in the method for uplink data transmission according to the embodiment of the present invention, in an F-OFDM system including multiple subbands having respective specific configurations, a network device generates and transmits configuration information of CTUs of an uplink subband, so that a terminal device can quickly and effectively acquire the information of the CTUs to perform authorization-free transmission, thereby improving the efficiency of system data transmission.

It should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.

The method for uplink data transmission according to the embodiment of the present invention is described in detail from the perspective of the network device in the above with reference to fig. 4 to 10, and the method for uplink data transmission according to the embodiment of the present invention is described from the perspective of the terminal device in the following with reference to fig. 11.

Fig. 11 illustrates a method 500 for uplink data transmission according to an embodiment of the present invention. The method 500 is performed by a terminal device, and the method 500 includes:

s510, a terminal device receives configuration information of a contention transmission unit CTU of a first sub-band sent by a network device, where the first sub-band is one of multiple uplink sub-bands, the multiple uplink sub-bands have respective specific configurations, and the CTU is a resource unit on the first sub-band for unlicensed transmission;

s520, the terminal device determines the CTU for unlicensed transmission on the first subband according to the configuration information of the CTU.

Therefore, in the method for uplink data transmission according to the embodiment of the present invention, in a system including a plurality of subbands having respective specific configurations, a terminal device receives configuration information of a CTU of an uplink subband to which the terminal device belongs, which is sent by a network device, so that a CTU for unlicensed transmission can be determined quickly and effectively, and thus, the efficiency of data transmission of the system can be improved.

Optionally, as an embodiment, the S510 that the terminal device receives configuration information of a contention transmission unit CTU of a first sub-band, where the configuration information is sent by the network device, includes:

the terminal device receives the configuration information of the CTU, which is transmitted by the network device in a broadcast form through a system information block.

Optionally, as an embodiment, the receiving, by the terminal device, the configuration information of the CTU, sent by the network device to the terminal device through the downlink control channel of the second subband, on the downlink second subband corresponding to the first subband includes:

Optionally, in this embodiment of the present invention, the configuration information of the CTU of the first subband includes configuration information of at least one CTU, and the configuration information of the at least one CTU includes time-frequency resources, a transmission multiplexing mode, a code division multiplexing mode, and code information.

Optionally, in this embodiment of the present invention, the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

Optionally, in this embodiment of the present invention, the code division multiplexing mode is code division multiple access CDMA, low density signature LDS, or sparse code multiple access SCMA, and the code information corresponds to the code division multiplexing mode and is a CDMA code, an LDS sequence, or an SCMA codebook.

Therefore, in the method for uplink data transmission according to the embodiment of the present invention, in an F-OFDM system including multiple subbands having respective specific configurations, a terminal device receives configuration information of a CTU of an uplink subband to which the terminal device belongs, which is sent by a network device, so that a CTU for unlicensed transmission can be determined quickly and efficiently, and thus, the efficiency of system data transmission can be improved.

The method for uplink data transmission according to the embodiment of the present invention is described in detail above with reference to fig. 4 to 11, and the network device and the terminal device according to the embodiment of the present invention are described below with reference to fig. 12 to 15.

Fig. 12 illustrates a network device 600 according to an embodiment of the invention. As shown in fig. 12, the network device 600 includes:

a generating module 610, configured to generate configuration information of a contention transmission unit CTU of a first uplink subband, where the first subband is one of multiple uplink subbands, the multiple uplink subbands have respective specific configurations, and the CTU is a resource unit on the first subband for unlicensed transmission;

a sending module 620, configured to send the configuration information of the CTU generated by the generating module 610.

Therefore, in the network device according to the embodiment of the present invention, in a system including a plurality of subbands having respective specific configurations, the network device generates and transmits configuration information of CTUs of an uplink subband, so that the terminal device can quickly and effectively acquire information of the CTUs to perform authorization-free transmission, thereby improving data transmission efficiency of the system.

Optionally, as an embodiment, the sending module 620 is specifically configured to: transmitting configuration information of the CTU in a broadcast form through a system information block.

Optionally, as an embodiment, the sending module 620 is specifically configured to: and sending the configuration information of the CTU to terminal equipment through a downlink control channel of a downlink second sub-band corresponding to the first sub-band.

Optionally, as an embodiment, the sending module 620 is specifically configured to: and sending the configuration information of the CTU in the corresponding frame of the first sub-band to the terminal equipment by using a frame as a period through a downlink control channel of a downlink second sub-band corresponding to the first sub-band.

Optionally, as an embodiment, the sending module 620 is specifically configured to: and sending the configuration information of the CTU in the corresponding subframe of the first sub-band to the terminal equipment through a downlink control channel in the subframe of a downlink second sub-band corresponding to the first sub-band.

Optionally, as an embodiment, the sending module 620 is specifically configured to: and transmitting the configuration information of the CTU to terminal equipment through Radio Resource Control (RRC) signaling.

Optionally, as an embodiment, the configuration information of the CTU of the first subband includes configuration information of at least one CTU, and the configuration information of the at least one CTU includes time-frequency resources, a transmission multiplexing mode, a code division multiplexing mode, and code information.

Optionally, as an embodiment, the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

Optionally, as an embodiment, the code division multiplexing mode is code division multiple access CDMA, low density signature LDS, or sparse code multiple access SCMA, and the code information corresponds to the code division multiplexing mode and is a CDMA code, an LDS sequence, or an SCMA codebook.

Optionally, as an embodiment, the first subband is a subband in an uplink frequency band in a frequency division multiplexing FDD system; or the first sub-band is a sub-band in a frequency band corresponding to an uplink time period in the time division multiplexing TDD system.

It should be understood that the network device 600 according to the embodiment of the present invention may correspond to an execution subject in the embodiment of the method of the present invention, and the above-mentioned and other operations and/or functions of each module in the network device 600 are respectively for implementing corresponding flows of each method in fig. 4 to fig. 11, and are not described herein again for brevity.

Fig. 13 shows a terminal device 700 according to an embodiment of the invention. As shown in fig. 13, the terminal device 700 includes:

a receiving module 710, configured to receive configuration information of a contention transmission unit CTU of a first subband, where the first subband is one of multiple uplink subbands, the multiple uplink subbands have respective specific configurations, and the CTU is a resource unit on the first subband for unlicensed transmission;

a determining module 720, configured to determine, according to the configuration information of the CTU received by the receiving module 710, the CTU used for the unlicensed transmission on the first subband.

Therefore, in the terminal device according to the embodiment of the present invention, in a system including a plurality of subbands having respective specific configurations, the terminal device receives configuration information of a CTU of an uplink subband to which the terminal device belongs, which is sent by a network device, so that a CTU for unlicensed transmission can be determined quickly and effectively, and thus, the efficiency of data transmission by the system can be improved.

Optionally, as an embodiment, the receiving module 710 is specifically configured to: and receiving the configuration information of the CTU, which is sent by the network equipment in a broadcast mode through a system information block.

Optionally, as an embodiment, the receiving module 710 is specifically configured to: and receiving, on a downlink second subband corresponding to the first subband, configuration information of the CTU, which is sent by the network device through a downlink control channel of the second subband.

Optionally, as an embodiment, the receiving module 710 is specifically configured to: and receiving, on a downlink second subband corresponding to the first subband, configuration information of the CTU in a frame corresponding to the first subband, where the frame is sent by the network device through a downlink control channel of the second subband in a frame period.

Optionally, as an embodiment, the receiving module 710 is specifically configured to: and receiving, on a downlink second subband corresponding to the first subband, configuration information of the CTU in a corresponding subframe of the first subband, where the configuration information is sent by the network device through a downlink control channel in a subframe of the second subband.

Optionally, as an embodiment, the receiving module 710 is specifically configured to: and receiving the configuration information of the CTU, which is sent by the network equipment through Radio Resource Control (RRC) signaling.

It should be understood that the terminal device 700 according to the embodiment of the present invention may correspond to an execution body in the embodiment of the method of the present invention, and the above and other operations and/or functions of each module in the terminal device 700 are respectively for implementing corresponding flows of each method in fig. 4 to fig. 11, and are not described herein again for brevity.

As shown in fig. 14, an embodiment of the present invention further provides a network device 800, where the network device 800 includes a processor 820 and a transceiver 840, and optionally further includes a bus 810 and a memory 830, and the processor 820, the memory 830, and the transceiver 840 are connected via the bus 810. The processor 820 invokes a program stored in the memory 830 through the bus 810 to generate configuration information of a contention transmission unit CTU of a first uplink sub-band, where the first sub-band is one of multiple uplink sub-bands, the multiple uplink sub-bands have respective specific configurations, and the CTU is a resource unit for unlicensed transmission on the first sub-band; the transceiver 840 calls a program stored in the memory 830 through the bus 810 for transmitting configuration information of the CTU.

It should be understood that, in the embodiment of the present invention, the Processor 820 may be a Central Processing Unit (CPU), and the Processor 820 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 830 may include both read-only memory and random access memory and provides instructions and data to the processor 820. A portion of memory 830 may also include non-volatile random access memory. For example, memory 830 may also store device type information.

The bus 810 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. But for clarity of illustration the various busses are labeled in the figures as bus 810.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 820. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 830, and the processor 820 reads the information in the memory 830 and performs the steps of the above method in combination with the hardware thereof. To avoid repetition, it is not described in detail here.

Optionally, as an embodiment, the transceiver 840 is specifically configured to: transmitting configuration information of the CTU in a broadcast form through a system information block.

Optionally, as an embodiment, the transceiver 840 is specifically configured to: and sending the configuration information of the CTU to terminal equipment through a downlink control channel of a downlink second sub-band corresponding to the first sub-band.

Optionally, as an embodiment, the transceiver 840 is specifically configured to: and sending the configuration information of the CTU in the corresponding frame of the first sub-band to the terminal equipment by using a frame as a period through a downlink control channel of a downlink second sub-band corresponding to the first sub-band.

Optionally, as an embodiment, the transceiver 840 is specifically configured to: and sending the configuration information of the CTU in the corresponding subframe of the first sub-band to the terminal equipment through a downlink control channel in the subframe of a downlink second sub-band corresponding to the first sub-band.

Optionally, as an embodiment, the transceiver 840 is specifically configured to: and transmitting the configuration information of the CTU to terminal equipment through Radio Resource Control (RRC) signaling.

It should be understood that the network device 800 according to the embodiment of the present invention may correspond to a main body for executing the method in the embodiment of the present invention, and may also correspond to the network device 600 according to the embodiment of the present invention, and the above and other operations and/or functions of each module in the network device 800 are for implementing the corresponding flows of the methods in fig. 4 to fig. 11, and are not described herein again for brevity.

As shown in fig. 15, an embodiment of the present invention further provides a terminal device 900, where the terminal device 900 includes a processor 920 and a transceiver 940, and optionally may further include a bus 910 and a memory 930, and the processor 920, the memory 930, and the transceiver 940 are connected via the bus 910. The transceiver 940 invokes, through the bus 910, a program stored in the memory 930, so as to receive configuration information of a contention transmission unit CTU of a first sub-band sent by a network device, where the first sub-band is one of multiple uplink sub-bands, the multiple uplink sub-bands have respective specific configurations, and the CTU is a resource unit on the first sub-band for unlicensed transmission; the processor 920 invokes, via the bus 910, a program stored in the memory 930 to determine, according to the configuration information of the CTUs, the CTUs on the first sub-band for unlicensed transmission.

It should be understood that, in the embodiment of the present invention, the Processor 920 may be a Central Processing Unit (CPU), and the Processor 920 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 930 may include a read-only memory and a random access memory, and provides instructions and data to the processor 920. A portion of the memory 930 may also include non-volatile random access memory. For example, the memory 930 may also store device type information.

The bus 910 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. But for clarity of illustration the various busses are labeled in the drawings as busses 910.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 920. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 930, and the processor 920 reads the information in the memory 930, and performs the steps of the above method in combination with the hardware thereof. To avoid repetition, it is not described in detail here.

Optionally, as an embodiment, the transceiver 940 is specifically configured to: and receiving the configuration information of the CTU, which is sent by the network equipment in a broadcast mode through a system information block.

Optionally, as an embodiment, the transceiver 940 is specifically configured to: and receiving, on a downlink second subband corresponding to the first subband, configuration information of the CTU, which is sent by the network device through a downlink control channel of the second subband.

Optionally, as an embodiment, the transceiver 940 is specifically configured to: and receiving, on a downlink second subband corresponding to the first subband, configuration information of the CTU in a frame corresponding to the first subband, where the frame is sent by the network device through a downlink control channel of the second subband in a frame period.

Optionally, as an embodiment, the transceiver 940 is specifically configured to: and receiving, on a downlink second subband corresponding to the first subband, configuration information of the CTU in a corresponding subframe of the first subband, where the configuration information is sent by the network device through a downlink control channel in a subframe of the second subband.

Optionally, as an embodiment, the transceiver 940 is specifically configured to: and receiving the configuration information of the CTU, which is sent by the network equipment through Radio Resource Control (RRC) signaling.

It should be understood that the terminal device 900 according to the embodiment of the present invention may correspond to a main body for executing the method in the embodiment of the present invention, and may also correspond to the terminal device 700 according to the embodiment of the present invention, and the above and other operations and/or functions of each module in the terminal device 900 are for implementing the corresponding flows of the methods in fig. 4 to fig. 11, and are not described herein again for brevity.

It should be understood that, in the embodiment of the present invention, preferably, the terminal device is a user equipment, and the network device is a base station.

It should also be understood that the transmitting module or transmitter in the above embodiments may refer to transmitting over an air interface, and may transmit over an air interface instead of transmitting to other devices so that the other devices may transmit over the air interface. The receiving module or receiver in the above embodiments may refer to receiving over an air interface, and may receive over an air interface instead of receiving over an air interface, from another device receiving over an air interface.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

Technical features and descriptions in one embodiment above can be understood and applied to other embodiments for brevity and clarity of the application document, and are not described in detail in other embodiments.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

For brevity and clarity of the application, technical features and descriptions in one embodiment may be applied to other embodiments, for example, technical features of a method embodiment may be applied to an apparatus embodiment or other method embodiments, and are not described in detail in other embodiments.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of sub-tape deployment, comprising:

receiving configuration information of a first subband in one or more subbands in an uplink, wherein the configuration information comprises:

one or more Contention Transmission Unit (CTU) configuration information of the first sub-band, each CTU configuration information being used for configuring a CTU, the CTU being a resource unit for unlicensed transmission on the first sub-band, and

at least one of the following parameter configurations of the first sub-band: subcarrier interval, transmission time interval TTI, cyclic prefix CP;

and determining the CTU used for the authorization-free transmission on the first sub-band according to the configuration information.

2. The method of claim 1, wherein the configuration information further comprises: a sub-band identification of the first sub-band.

3. The method according to claim 1 or 2, wherein each CTU is a resource unit combining time, frequency and pilot.

4. The method of claim 1, further comprising:

and sending capability information, wherein the capability information is used for indicating the capability of the uplink unlicensed transmission.

5. The method of claim 1, wherein the plurality of CTU configuration information is configured via a CTU configuration list CTUConfigList.

6. The method according to any of claims 1-5, wherein the configuration information is sent by radio resource control, RRC, signaling.

7. The method of claim 1, wherein if multiple CTUs are configured, the method further comprises: selecting one or a group of CTUs randomly or according to a certain rule for license-free transmission of the first sub-band.

8. The method of claim 1, wherein the CTU configuration information comprises configuration information of time-frequency resources, configuration information of transmission multiplexing mode, and configuration information of code division multiplexing mode and codes.

9. The method of claim 8, wherein the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

10. A method of sub-tape deployment, comprising:

generating configuration information of a first subband in one or more subbands in an uplink, wherein the configuration information comprises:

and sending the configuration information.

11. The method of claim 10, wherein the configuration information further comprises: a sub-band identification of the first sub-band.

12. The method according to claim 10 or 11, wherein each CTU is a resource unit combining time, frequency and pilot.

13. The method of claim 10, further comprising:

and receiving capability information, wherein the capability information is used for indicating the capability of the terminal equipment for uplink unauthorized transmission.

14. The method of claim 10, wherein the plurality of CTU configuration information is configured via a CTU configuration list CTUConfigList.

15. The method according to any of claims 10-14, wherein the configuration information is sent by radio resource control, RRC, signaling.

16. The method of claim 10, wherein the CTU configuration information comprises configuration information of time-frequency resources, configuration information of transmission multiplexing mode, and configuration information of code division multiplexing mode and codes.

17. The method of claim 16, wherein the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

18. An apparatus for deploying a sub-tape, comprising:

a transceiver unit, configured to receive configuration information of a first subband in one or more subbands in an uplink, where the configuration information includes:

and the processing unit is used for determining the CTU used for the authorization-free transmission on the first sub-band according to the configuration information.

19. The apparatus of claim 18, wherein the configuration information further comprises: a sub-band identification of the first sub-band.

20. The apparatus according to claim 18 or 19, wherein each CTU is a resource unit combining time, frequency and pilot.

21. The apparatus of claim 18, wherein the transceiver unit is further configured to:

22. The apparatus of claim 18, wherein the plurality of CTU configuration information are configured via a CTU configuration list CTUConfigList.

23. The apparatus according to any of claims 18-22, wherein the configuration information is sent by radio resource control, RRC, signaling.

24. The apparatus of claim 18, wherein if configured with multiple CTUs, the processing unit is further configured to: selecting one or a group of CTUs randomly or according to a certain rule for license-free transmission of the first sub-band.

25. The apparatus of claim 18, wherein the CTU configuration information comprises configuration information of time-frequency resources, configuration information of transmission multiplexing mode, and configuration information of code division multiplexing mode and codes.

26. The apparatus of claim 25, wherein the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

27. An apparatus for deploying a sub-tape, comprising:

a processing unit, configured to generate configuration information of a first subband in one or more subbands in an uplink, where the configuration information includes:

and the transceiving unit is used for sending the configuration information.

28. The apparatus of claim 27, wherein the configuration information further comprises: a sub-band identification of the first sub-band.

29. The apparatus according to claim 27 or 28, wherein each CTU is a resource unit combining time, frequency and pilot.

30. The apparatus of claim 27, wherein the transceiver unit is further configured to:

31. The apparatus of claim 27, wherein the plurality of CTU configuration information are configured via a CTU configuration list CTUConfigList.

32. The apparatus according to any of claims 27-31, wherein the configuration information is sent by radio resource control, RRC, signaling.

33. The apparatus of claim 27, wherein the CTU configuration information comprises configuration information of time-frequency resources, configuration information of transmission multiplexing mode, and configuration information of code division multiplexing mode and codes.

34. The apparatus of claim 33, wherein the transmission multiplexing mode is a frequency division multiplexing mode, a time division multiplexing mode, or a space division multiplexing mode.

35. A computer-readable storage medium, having stored thereon a computer program which, when executed on a computer, causes the method of any one of claims 1-17 to be implemented.

36. A computer program product, comprising a computer program which, when executed on a computer, causes the method of any one of claims 1-17 to be carried out.