WO2019056332A1

WO2019056332A1 - Method and device for transmitting data on unlicensed spectrum

Info

Publication number: WO2019056332A1
Application number: PCT/CN2017/103060
Authority: WO
Inventors: 张武荣; 李振宇; 南杨; 韩金侠
Original assignee: 华为技术有限公司
Priority date: 2017-09-23
Filing date: 2017-09-23
Publication date: 2019-03-28
Also published as: CN111034311A; CN111034311B

Abstract

A method and device for transmitting data on an unlicensed spectrum so as to improve the utilization of unlicensed spectrum resources and the capacity of wireless communication systems. The method comprises: a network side device sending broadcast information in an unlicensed spectrum on a carrier wave that is used to transmit broadcast information such that a first terminal device receives resource configuration information on an anchor point carrier wave; the network side device sending the resource configuration information on the anchor point carrier wave, the resource configuration information being used to indicate a first logic carrier wave identifier, and the first logic carrier wave identifier being used to determine a first carrier wave that is used by the network side device to transmit data with the first terminal device during a next cycle of a current cycle, wherein the first logic carrier wave identifier is used to uniquely identify the first carrier wave among N carrier waves, and the anchor point carrier wave is one from among the N carrier waves; the network side device frequency hopping during the next cycle onto the first carrier wave that is determined according to the first logic carrier wave identifier so as to transmit data with the first terminal device.

Description

Data transmission method and device on unlicensed spectrum

Technical field

The present application relates to the field of wireless communication technologies, and in particular, to a data transmission method and device on an unlicensed spectrum.

Background technique

With the rapid increase of communication services, the 3rd generation partnership project (3GPP) authorized spectrum gradually becomes insufficient to provide higher network quality. Moreover, according to the latest international spectrum white paper released by the Federal Communications Commission (FCC), the unlicensed spectrum resources are larger than the licensed spectrum resources. If the unlicensed spectrum can be effectively utilized, the spectrum efficiency of wireless communication will be greatly improved. Provide users with higher network quality.

Therefore, how to use unlicensed spectrum resources to provide more efficient wireless access to meet the growing demand for mobile broadband services is an urgent problem to be solved.

Summary of the invention

The embodiment of the present application provides a data transmission method on an unlicensed spectrum to improve the utilization of unlicensed spectrum resources and the capacity of the wireless communication system.

In a first aspect, the present application provides a data transmission method on an unlicensed spectrum, the method comprising: the network side device transmitting broadcast information on a carrier for transmitting broadcast information in an unlicensed spectrum, and transmitting the resource on an anchor carrier. The configuration information, where the resource configuration information is used to indicate the first logical carrier identifier, where the first logical carrier identifier is used to determine the number used by the network side device and the first terminal device to transmit data in the next cycle of the current cycle. a first carrier device that acquires the first logical carrier identifier configured by the network side device for the first terminal; the network side device and the first terminal device hop in the next cycle Performing data transmission on the first carrier determined according to the first logical carrier identifier, where the first logical carrier identifier is used to uniquely identify the first carrier in the N carriers, where the N carriers are a carrier used by the network side device and the plurality of terminal devices to transmit data, where the anchor carrier is one of the N carriers, and the first terminal device is Any one of said plurality of terminal devices, N being a positive integer greater than 1.

Through the above method, the network side device sends broadcast information on a carrier for transmitting broadcast information in an unlicensed spectrum, and sends the resource configuration information on the anchor carrier, where the broadcast information includes an anchor carrier Information, the resource configuration information is used to indicate a first logical carrier identifier, where the first logical carrier identifier is used to determine a first used by the network side device and the first terminal device to transmit data in a next cycle of the current cycle. a carrier, the first terminal device is configured to acquire a first logical carrier identifier configured by the network side device for the first terminal device, and the network side device and the first terminal device are in the next cycle Performing data transmission on the first carrier determined according to the first logical carrier identifier, where the first logical carrier identifier is used to uniquely identify the first carrier in the N carriers, and the N carriers a carrier used when the network side device and the plurality of terminal devices respectively transmit data, where the anchor carrier is one of the N carriers, so that the network Equipment under the premise of meeting the spectral requirements of unauthorized use of data transmission via a plurality of carriers with the terminal device, and further improving unlicensed spectrum resource capacity utilization and a wireless communication system. And the network side device and the first terminal device perform data transmission on the first carrier determined by the first logical carrier identifier in the next period, and may also be reduced. interference.

In a possible implementation, the first terminal device obtains, by using the following steps, the first logical carrier identifier configured by the network side device for the first terminal: used to transmit broadcast information in the unlicensed spectrum The broadcast information is received on the carrier, and the resource configuration information is received on the anchor carrier according to the information of the anchor carrier carried in the broadcast information.

In a possible implementation, the network side device sends system information on the anchor carrier, and the first terminal device receives the system information on the anchor carrier, which may be reduced according to the first logic. The system information transmitted on the first carrier determined by the carrier identifier enables the network side device and the first terminal device to transmit more data.

In a possible implementation manner, when the network side device transmits the broadcast information and the synchronization information in a time division multiplexing manner, the network side device hops to the next cycle according to the foregoing step. Data transmission with the first terminal device on a first carrier determined by a logical carrier identifier; jumping to a second for transmitting broadcast information and the synchronization information within a first duration included in the next period Transmitting the broadcast information and the synchronization information on a carrier; and skipping from the second carrier to the first carrier to continue data transmission with the first terminal device in a second duration included in the next period The synchronization information is used to indicate that the first terminal device synchronizes with the network side device.

In a possible implementation manner, when the network side device transmits the broadcast information and the synchronization information by means of frequency division multiplexing, the network side device hops to follow the next cycle in the following cycle. Data transmission with the first terminal device on the first carrier determined by the first logical carrier identifier: the network side device determines, according to the first logical carrier identifier, that the next cycle is to be redirected to The first carrier; within the first duration included in the next period, hopping to transmit the broadcast information on a second carrier for transmitting broadcast information, and jumping to a third for transmitting synchronization information The synchronization information is transmitted on the carrier; in the second duration included in the next period, data is transmitted from the second carrier and the third carrier to the first carrier to continue data transmission with the first terminal device.

In a possible implementation, the first terminal device performs data transmission with the network side device on the first carrier determined according to the first logical carrier identifier by using the following steps: Determining, by the first terminal device, the first carrier to be hopped to in the next period according to the first logical carrier identifier, jumping to the first time period included in the next period The first carrier continues to perform data transmission with the network side device.

In a possible implementation manner, the network side device and the first terminal device may determine, by using any one of the following four manners, the first carrier to be redirected to in the next period:

Method 1 : Calculate, according to the first logical carrier identifier, a first physical carrier identifier according to a preset calculation rule, and use the carrier corresponding to the first physical carrier identifier as the to-be-hopped to the next period First carrier.

The second physical carrier identifier is calculated according to the preset calculation rule, and the first physical identifier is obtained according to the first logical carrier identifier and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum. The carrier corresponding to the carrier identifier is used as the first carrier to which the next cycle is to be jumped.

The third physical carrier identifier is calculated according to the first logical carrier identifier and the identifier of the current period, and the carrier corresponding to the first physical carrier identifier is used as the next period. The first carrier to be jumped to.

Method 4: Calculate the first physical carrier identifier according to the preset calculation rule according to the first logical carrier identifier, the identifier of the current period, and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum. And identifying, the carrier corresponding to the first physical carrier identifier is used as the first carrier to which the next cycle is to be redirected.

The physical carrier identifier is used to uniquely identify each of the M carriers obtained by the unlicensed spectrum division, where M is a positive integer greater than N.

In a possible implementation manner, the identifier of the period includes one or more of a superframe number, a frame number, and a subframe number.

In a possible implementation, if the network side device or the first terminal device determines the first carrier to which the next cycle is to be redirected, and the next determined according to the second logical carrier identifier a fourth carrier to be jumped to in a cycle, the network side device selecting a carrier in the unlicensed spectrum that is not occupied in the next cycle, as the The first carrier, the second logical carrier identifier is any one of the logical carrier identifiers of the N carriers except the first logical carrier identifier.

In a possible implementation, the network side device and the first terminal device determine, according to the first logical carrier identifier, after the first carrier to be jumped to in the next cycle, for the N carriers. Determining, by the second logical carrier identifier in the logical carrier identifier, a pre-configured center frequency point of the first carrier to be jumped to in the next period determined according to the first logical carrier identifier, and according to the second The frequency interval that needs to be satisfied between the center frequency points of the fourth carrier to be jumped to in the next cycle determined by the logical carrier identifier; according to the center frequency of the first carrier to be jumped to in the next cycle and the frequency And determining, according to the second logical carrier identifier, the fourth carrier to be jumped to in the next cycle.

According to the method, the network side device and the first terminal device determine, according to the first logical carrier identifier, the first carrier to be jumped to in the next period, according to the preset N The frequency interval of the carrier and the carrier determined by the other frequency carrier identifier determined by the center frequency of the first carrier to be jumped to in the next period may reduce the time when determining the carrier to which the other logical carrier identifier is to be redirected Calculated amount.

In a second aspect, the embodiment of the present application further provides a network side device, where the network side device has the function of implementing the network side device in the foregoing method embodiment. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible implementation, the structure of the network side device includes a processing unit and a transmission unit, and the units may perform corresponding functions in the foregoing method examples. For details, refer to the detailed description in the method example, and details are not described herein.

In a possible implementation, the structure of the network side device includes a processor and a transceiver, and the processor is configured to support the network side device to perform a corresponding function in the foregoing method. The processor is coupled to a memory that stores program instructions and data necessary for the network side device.

In a third aspect, the embodiment of the present application further provides a terminal device, where the terminal device has the function of implementing the network side device in the foregoing method embodiment. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible implementation, the structure of the terminal device includes a processing unit and a transmission unit, and the units may perform corresponding functions in the foregoing method examples. For details, refer to the detailed description in the method example, and details are not described herein.

In a possible implementation, the structure of the terminal device includes a processor and a transceiver, and the processor is configured to support the network side device to perform a corresponding function in the foregoing method. The processor is coupled to a memory that stores program instructions and data necessary for the network side device.

In a fourth aspect, the embodiment of the present application further provides a wireless communication system, where the communication system includes: the network side device of the second aspect and the terminal device of the third aspect.

In a fifth aspect, the embodiment of the present application further provides a computer storage medium, where the software medium stores a software program, and the software program can implement any one of any aspect when being read and executed by one or more processors. Design provided Methods.

In a sixth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform any of the methods of the first aspect above.

In this embodiment, the network side device sends broadcast information on a carrier for transmitting broadcast information in an unlicensed spectrum, and sends the resource configuration information on the anchor carrier, where the broadcast information includes an anchor point. The information of the carrier, where the resource configuration information is used to indicate the first logical carrier identifier, where the first logical carrier identifier is used to determine the data used by the network side device and the first terminal device to transmit data in the next cycle of the current cycle. The first carrier, the first terminal device receives the broadcast information on a carrier for transmitting broadcast information in the unlicensed spectrum, according to the information of the anchor carrier carried in the broadcast message to the Receiving the resource configuration information on the anchor carrier, and determining, according to the resource configuration information, the first logical carrier identifier configured by the network side device as the first terminal device; the network side device and the first terminal device Performing, in the next period, frequency hopping to the first carrier determined according to the first logical carrier identifier, where the first logical carrier identifier The N carrier is used to uniquely identify the first carrier, where the N carriers are respectively used by the network side device and multiple terminal devices, and the anchor carrier is the N carriers. One of the carriers enables the network side device to perform data transmission with the terminal device through multiple carriers on the premise of satisfying the use requirements of the unlicensed spectrum, thereby improving the utilization of the unlicensed spectrum resources and the capacity of the wireless communication system. . Moreover, the network side device and the first terminal device perform data transmission on the first carrier determined by the first period in the next period, and the interference may also be reduced.

DRAWINGS

1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present application;

2 is a data transmission method on an unlicensed spectrum according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a super frame according to an embodiment of the present disclosure;

4 is a schematic diagram of time-frequency resources occupied by a base station and a first terminal device for performing data transmission in a frequency band below 1 GHz according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of time-frequency resources occupied by a base station and a first terminal device for performing data transmission in a frequency band below 1 GHz according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of time-frequency resources occupied by a base station and a first terminal device for performing data transmission in a frequency band below 1 GHz according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a method for data transmission between a base station and a first terminal device in a frequency band below 1 GHz according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of time-frequency resources occupied by a base station and a first terminal device for data transmission in a 2.4 GHz frequency band according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of time-frequency resources occupied by a base station and a first terminal device during data transmission in a frequency band of 2.4 GHz according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of a method for data transmission between a base station and a first terminal device in a 2.4 GHz frequency band according to an embodiment of the present disclosure;

FIG. 11 is a network side device according to an embodiment of the present application;

FIG. 12 is a terminal device according to an embodiment of the present application.

Detailed ways

The embodiments of the present application provide a data method and device for unlicensed spectrum to improve utilization of unlicensed spectrum resources and capacity of a wireless network system. The method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.

In the embodiment of the present application, the network side device sends broadcast information on a carrier for transmitting broadcast information in an unlicensed spectrum, and sends the resource configuration information on the anchor carrier, where the broadcast information includes an anchor carrier. Information, the resource configuration information is used to indicate a first logical carrier identifier, where the first logical carrier identifier is used to determine a first used by the network side device and the first terminal device to transmit data in a next cycle of the current cycle. The first terminal device receives the broadcast information on the carrier for transmitting the broadcast information in the unlicensed spectrum, and receives the resource configuration on the anchor carrier according to the information of the anchor carrier carried in the broadcast message. Determining, according to the resource configuration information, that the network side device hops to the first carrier determined according to the first logical carrier identifier for data transmission in the next period, where the first logical carrier identifier The first carrier is uniquely identified in the N carriers, and the N carriers are used to transmit data by the network side device and multiple terminal devices. The carrier used, the anchor carrier is one of the N carriers, the first terminal device is any one of the multiple terminal devices, and N is a positive integer greater than 1, so that the network side device The device can transmit data through multiple carriers on the unlicensed spectrum and more terminal devices on the premise of satisfying the requirements of the unlicensed spectrum, thereby improving the utilization of unlicensed spectrum resources and the capacity of the wireless communication system. Moreover, the network side device and the first terminal device perform data transmission on the first carrier determined by the first period in the next period, and the interference may also be reduced.

Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

(1) Frequency hopping refers to a communication mode in which the carrier frequency used for data transmission between the receiving end and the transmitting end is discretely changed according to a predetermined rule.

(2) A logical carrier identifier, which is used for uniquely identifying N carriers used for data transmission between the network side device and the plurality of terminal devices. Each of the N carriers corresponds to one logical carrier identifier, and the logical carrier identifier corresponding to the N carriers before and after frequency hopping is unchanged, and N is a positive integer greater than 1. The logical carrier identifiers corresponding to the N carriers may be represented by numbers, for example, the N carriers are sequentially numbered as 1, 2, 3, ..., N. At this time, the logical carrier identifiers corresponding to the N carriers are respectively 1,2,3...,N.

(3) A physical carrier identifier, which is used to uniquely identify the M carriers obtained by dividing the unlicensed spectrum according to the set bandwidth, and M is a positive integer greater than N. The physical carrier identifiers of the M carriers may be represented by numbers or letters, for example, the unlicensed spectrum is divided into M carriers according to a set carrier bandwidth, and the M carriers are changed from small to large according to a central frequency point. The sequence numbers are 1, 2, 3, ..., M, and the physical carrier identifiers of the M carriers are 1, 2, 3, ..., M, respectively.

(4) Multiple means two or more.

In addition, it should be understood that in the description of the present application, the terms "first", "second" and the like are used only to distinguish the purpose of description, and are not to be understood as indicating or implying relative importance, nor as an indication. Or suggest the order.

The architecture of the wireless communication system involved in the embodiment of the present application is as shown in FIG. 1. The wireless communication system includes: a network side device 101 and a terminal device 102.

The wireless communication system may be a cellular mobile communication system. For example, the wireless communication system may be a 3th generation mobile communication (3G) system or a fourth generation mobile communication technology (the 4th). Generation mobile communication, 4G) system, also known as long term evolution (LTE) system, or the wireless communication system can also be a 5G system, also known as the new air interface (new Radio, NR) system. The network side device 101 may be a base station (BS) in a 3G system or an evolved base station (eNB) employed in a 4G system. Alternatively, the network side device 101 may also be a base station (gNB) that adopts a centralized distributed architecture in a 5G system. When the network side device 101 adopts a centralized distributed architecture, it generally includes a central unit (CU) and at least two distributed units (DUs). a centralized data unit is provided with a packet data convergence protocol (PDCP) layer, a radio link control protocol (RLC) layer, and a media access control (MAC) layer protocol stack; A physical (physical, PHY) layer protocol stack is provided in the unit. The specific implementation manner of the network side device 101 is not limited in this embodiment.

Alternatively, the wireless communication system may also be a Bluetooth low energy (BLE) system, the network side device 101 may be a BLE master device, and the terminal device 102 may be a BLE slave device.

Alternatively, the wireless communication system may also be a wireless local area networks (WLAN) system, and the network side device 101 may be an access point (AP) or a transmission reception point in a wireless local area network. TRP).

Alternatively, the wireless communication system can be other types of wireless communication systems as well.

The terminal device 102 can be a device that provides voice and/or data connectivity to the user. The terminal device 102 can communicate with one or more core networks via a radio access network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and has a mobile terminal The computer, for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device. For example, a station (STA), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, and a remote terminal ( Remote terminal), an access terminal, a user terminal, a user agent, a user device, or a user equipment (UE).

It should be noted that, in the wireless communication system shown in FIG. 1, a plurality of network side devices 101 and/or a plurality of terminal devices 102 may be included, and one network side device 101 and one terminal 120 are illustrated in FIG. The description is not limited to this embodiment.

Based on the wireless communication system shown in FIG. 1, the embodiment of the present application provides a data transmission method on an unlicensed spectrum. Referring to FIG. 2, the method specifically includes the following steps:

S201: The network side device sends broadcast information on a carrier for transmitting broadcast information in an unlicensed spectrum, where the broadcast information includes information of an anchor carrier.

The information of the anchor carrier is used to indicate current time-frequency resource information occupied by the anchor carrier, for example, the information of the anchor carrier is a logical carrier identifier of the anchor carrier.

In a specific implementation, the information of the anchor carrier is carried in a master information block (MIB) or a system information block (SIB) 1.

S202: The network side device sends resource configuration information on the anchor carrier, where the resource configuration information is used to indicate the first logical carrier identifier.

The first logical carrier identifier is used to determine a first carrier used by the network side device and the first terminal device to transmit data in a next cycle of the current period, and to uniquely identify the N carriers. a first carrier, where the N carriers are respectively used by the network side device and the plurality of terminal devices, where the anchor carrier is one of the N carriers, and the first terminal device For any of the plurality of terminal devices, N is a positive integer greater than one.

In an implementation, the network side device sends the system configuration information on the anchor carrier, and the system information is used to provide the first terminal device with the information of the access layer and the non-access layer. The first terminal device is configured to perform various operations in the radio access network to reduce system information, such as SIB2 and SIB3, transmitted on the first carrier determined according to the first logical carrier identifier.

In an implementation, before the network side device sends the resource configuration information on the anchor carrier, the network side device further sends synchronization information on the second carrier used to transmit the broadcast information in the unlicensed spectrum, or is used for transmission. The synchronization information is sent on the third carrier of the synchronization information, where the synchronization information is used to indicate that the first terminal device synchronizes with the network side device. Correspondingly, the first terminal receives the synchronization information on a second carrier for transmitting the broadcast information, or receives the third carrier on the third carrier used to transmit the synchronization information in the unlicensed spectrum. The synchronization information is synchronized with the network side device according to the synchronization information. The synchronization information includes: a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and the network side device may send the PSS and the SSS on a third carrier. The PSS and the SSS may also be separately transmitted on two third carriers.

In an implementation, the network side device may transmit the broadcast information and the synchronization information on a fixed carrier in the unlicensed spectrum (that is, the network side device transmits on a fixed frequency band in the unlicensed frequency band) The broadcast information and the synchronization information may also be transmitted on the unlicensed spectrum by means of frequency hopping.

In a specific implementation manner, the network side device sends a discovery reference signal (DRS) in a fixed carrier in the unlicensed spectrum, where the DRS includes a PSS, an SSS, and the broadcast information, so that the The first terminal device is capable of receiving the DRS on the fixed carrier, synchronizing with the network side device according to the DRS, and obtaining information of the anchor carrier, so that the anchor carrier can be received on the anchor carrier. The resource configuration information is obtained, and the first logical carrier identifier is obtained.

S203: The first terminal acquires a first logical carrier identifier that is configured by the network side device to be configured by the first terminal device.

Specifically, the first terminal acquires, by using the following steps, the first logical carrier identifier configured by the network side device for the first terminal device in the process of initially accessing the network: (1) the first terminal device is in Receiving the broadcast information on a carrier for transmitting broadcast information in the unlicensed spectrum; (2) the first terminal, according to the information of the anchor carrier carried in the broadcast information, to the anchor carrier Receiving the resource configuration information; (3) the first terminal device determines, according to the resource configuration information, the first logic used by the network side device to configure the first terminal device to transmit data with the network side device Carrier identification.

It should be noted that, the first terminal device may obtain the first logical subcarrier identifier by using the foregoing method in the process of initially accessing the network, and does not need to send the broadcast information to each of the network side devices. The first logical carrier identifier is obtained in each cycle.

S204: The network side device and the first terminal device perform frequency data transmission on the first carrier determined according to the first logical carrier identifier in the next period.

The spectrum is the basis of wireless communication. In order to ensure the fair use of unlicensed spectrum, different countries have different legal rules. To use wireless communication equipment in different regions, it is necessary to comply with the spectrum regulations of the corresponding regions. In this embodiment, after the first terminal device obtains the first logical carrier identifier, the network side device and the first terminal device determine, according to the first logical carrier identifier, by using a frequency hopping manner. Data transmission is performed on the first carrier, so that the network side device and the first terminal comply with the regulations corresponding to the unlicensed spectrum, and can also be reduced. interference.

Specifically, if the network side device transmits the broadcast information and the synchronization message in each period, when the network side device sends the broadcast information and the synchronization information in a time division multiplexing manner, The network side device performs data transmission with the first terminal device on the first carrier determined according to the first logical carrier identifier by using the following steps: (1) the network side device according to the Determining, by the first logical carrier identifier, the first carrier to be redirected to in the next period; (2) the network side device skipping to use within a first duration included in the next period Transmitting the broadcast information and the synchronization information on a second carrier that transmits the broadcast information and the synchronization information, where the synchronization information is used to indicate that the first terminal device synchronizes with the network side device; During the second period of time included in the next period, the network side device skips from the second carrier to the first carrier to continue data transmission with the first terminal device.

When the network side device sends the broadcast information and the synchronization information by using a frequency division multiplexing manner, the network side device performs frequency hopping in the next cycle to determine according to the first logical carrier identifier by using the following steps: Data transmission with the first terminal device on the first carrier: (1) the network side device determines, according to the first logical carrier identifier, the first carrier to be redirected in the next period (2) the network side device hops to transmit the broadcast information on the second carrier for transmitting broadcast information within a first duration included in the next period, and jumps to use for transmitting synchronization information. And transmitting the synchronization information on the third carrier; (3) the network side device skips from the second carrier and the third carrier to the first carrier to continue and the first time in the second duration included in the next period A terminal device performs data transmission. It should be noted that, in the embodiment of the present invention, the network side device does not transmit the broadcast information to the second carrier for transmitting the broadcast information within the first duration included in the next period, and jumps to the The sequence of transmitting synchronization information on the third carrier for transmitting synchronization information is limited. The network side device may firstly jump to a second carrier for transmitting broadcast information to transmit broadcast information within a first duration included in the next period, and then jump to a third carrier for transmitting synchronization information. The transmission synchronization information may also first jump to the third carrier for transmitting the synchronization information to transmit the synchronization information, and then jump to the third carrier for transmitting the synchronization information to transmit the synchronization information to the transmission for the broadcast information. The second carrier may also simultaneously jump to the second carrier and the third carrier to separately transmit the broadcast information and the synchronization information.

Specifically, if the network side device transmits the broadcast information only in a period corresponding to the initial access network of the first terminal, the network side device hops to the next cycle in the next cycle by using the following steps. Data transmission with the first terminal device on the first carrier determined by the first logical carrier identifier: (1) the network side device determines to jump in the next cycle according to the first logical carrier identifier The first carrier to be sent; (2) the network side device hops to transmit the broadcast information on the second carrier for transmitting broadcast information within a first duration included in the next period, and jumps Transmitting synchronization information on a third carrier for transmitting synchronization information; (3) jumping, by the network side device from the second carrier and the third carrier, to the second duration included in the next period A carrier continues to perform data transmission with the first terminal device.

Correspondingly, the first terminal device performs data transmission with the network side device by hopping to the first carrier determined according to the first logical carrier identifier in the next period: the first terminal Determining, according to the first logical carrier identifier, the first carrier to be hopped to in the next period, and skipping to the first carrier to continue in the first duration included in the next period Data transmission is performed with the network side device.

In an implementation, the uplink data and the downlink data in the first carrier determined according to the first logical carrier identifier in each period may be transmitted in a time division multiplexing manner, where each cycle is based on the first logical carrier. Determining the duration of the uplink (UL) transmission for the second duration occupied by the determined first carrier and for downlinking The duration of the (downlink, DL) transmission may be flexibly configured. The configuration information may be included in the broadcast information, and used to indicate the duration of the uplink transmission and the downlink transmission in the second duration. The duration corresponding to each period, and the first duration and the second duration included in one cycle can be configured according to actual needs. For example, the period may be 100 ms, wherein the first time duration is 20 ms, the second duration is 80 ms, and the period may be 80 ms, wherein the first duration is 3 ms, and the second duration is 75ms and so on.

Optionally, the first terminal device and the network side device may determine, by, but not limited to, the following four methods: the first carrier to be redirected to in the next period:

Method 2: Calculate, according to the first logical carrier identifier and the identifier of the current period, a first physical carrier identifier according to a preset calculation rule, and use the carrier corresponding to the first physical carrier identifier as the next period The first carrier to be jumped to.

The third physical carrier identifier is calculated according to the preset calculation rule, and the first physical identifier is obtained according to the first physical carrier identifier and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum. The carrier corresponding to the carrier identifier is used as the first carrier to which the next cycle is to be jumped.

Method 4: Calculate the first physical carrier identifier according to the preset calculation rule according to the first logical carrier identifier, the identifier of the current period, and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum. And the carrier corresponding to the first physical carrier identifier is used as the first carrier to which the next cycle is to be redirected.

The available carrier is a carrier whose energy on the carrier in the unlicensed spectrum is less than a set value, so that the available carrier can normally transmit data. Therefore, the first terminal device or the network side device determines that the carrier in the unlicensed spectrum is considered when the first carrier to be jumped to in the next period is determined by using the foregoing method three or method four. The communication quality can further improve the data transmission quality of the network side device and the first terminal device.

Specifically, the identifier of the period includes one or more of a superframe number, a frame number, and a subframe number. For example, as shown in FIG. 3, the period is a superframe, the superframe is composed of a plurality of frames, each frame is composed of a plurality of subframes, and the identifier of the period is the superframe number.

It should be noted that, the network side device and the first terminal device determine, according to the first logical carrier identifier, that the calculation rule used when the first carrier in the next cycle is the same.

In an implementation, the network side device or the first terminal device determines that the first carrier to which the next cycle is to be redirected, and the next cycle determined according to the second logical carrier identifier is to be redirected to The fourth carrier is the same, the network side device selects a carrier in the unlicensed spectrum that is not occupied in the next period, as the first carrier to be jumped to in the next period, or The network side device and the first terminal device do not perform data transmission in the next period (abandon data transmission in the next period), and the second logical carrier identifier is a logical carrier identifier of the N carriers. Any one of the logical carrier identifiers except the first logical carrier identifier. If the network side device and the first terminal device abandon transmitting data in the next cycle, determining, according to the first logical identifier, a fifth carrier to be redirected to in a next cycle of the next cycle And hopping to the fifth carrier determined according to the first logical carrier identifier to perform data transmission with the first terminal device at the end of the next period.

Specifically, for the first terminal device, in addition to identifying the first carrier to be jumped to according to the first logical carrier, determining another logical carrier identifier of the N logical carriers to determine the next one. The other logical carriers in the cycle identify the corresponding carriers. The first terminal device may acquire other logical carrier identifiers of the N logical carriers except the first logical carrier identifier by using, but not limited to, the following three manners to determine the next one. The other logical carriers in the cycle identify the corresponding carriers:

The network side device carries the N logical carrier identifiers in the broadcast information sent on the second carrier that is used to send the broadcast information in the authorized spectrum, where the first terminal device is in the Receiving the broadcast message on a second carrier for transmitting the broadcast information in the licensed spectrum, and acquiring the N logical carrier identifiers from the broadcast message.

Manner 2: The network side device sends the other logical carrier identifier on the anchor carrier, where the first terminal device sends the anchor carrier information carried in the broadcast message to the anchor carrier The other logical carrier identifier is received.

Manner 3: The network side device carries the number N of logical carrier identifiers of the N carriers in the broadcast information sent on the carrier for transmitting the broadcast information in the licensed spectrum, where the N carriers are The logical carrier identifier and the number of logical carrier identifiers N satisfy a set relationship, and the first terminal device receives the broadcast message on the carrier for transmitting the broadcast information in the licensed spectrum, from the broadcast message. Obtaining the number N of the logical carrier identifiers, and determining the N logical carrier identifiers according to the setting relationship. For example, if the logical carrier identifies the number N, the N logical carrier identifiers are respectively determined to be

numbers

1, 2, 3, . . . , N according to the setting relationship.

Optionally, the network side device and the first terminal device determine, according to the first logical carrier identifier, a logical carrier for the N carriers after the first carrier to be jumped to in a next cycle. a second logical carrier identifier in the identifier, where the network side device determines a pre-configured center frequency point of the first carrier to be jumped to in the next period according to the first logical carrier identifier, and according to the The second logical carrier identifier determines a frequency interval to be satisfied between the center frequency points of the fourth carrier to be jumped to in the next cycle; according to the center frequency point of the first carrier to be jumped to in the next cycle Determining the frequency interval, determining the fourth carrier to be jumped to in the next cycle determined according to the second logical carrier identifier.

For example, when the network side device configures the difference between the center frequency points of the carriers determined according to any two of the N logical carrier identifiers to be fixed values in any two periods, the network side Determining, according to the first logical carrier identifier, the first carrier to be jumped to, according to the first logical carrier identifier, according to a center frequency of the first carrier, and according to the second logic And a difference between a center frequency point of the carrier determined by the carrier identifier and a center frequency point of the first carrier, and determining a carrier corresponding to the second logical carrier identifier in the next period. Or, when the network side device configures the difference between the center frequency points of the carriers corresponding to any two of the logical carrier identifiers of the N carriers, which are fixed values in any two periods, and configure the The N logical carriers identify the same hopping pattern, and the network side device or the first terminal device determines the second logical carrier in the next cycle according to the hopping pattern and the first logical carrier identifier. Identify the corresponding carrier.

Specifically, when the network side device configures, the difference between the center frequency points of the carriers corresponding to any two of the N logical carrier identifiers is a fixed value in any two periods, and the arbitrary two If the difference between the center frequency points of the corresponding carriers is the bandwidth of the carrier in the unlicensed spectrum, if the physical carrier identifier of the M carriers obtained by dividing the unlicensed spectrum is the M carriers According to the sequence of the central frequency points from small to large, the logical carrier identifiers of the M carriers are 1, 2, ..., M, and the carrier of the network side device transmitting the broadcast information and the synchronization information is fixed as a logical carrier. If the carrier is identified as 1 to n, the physical carrier identifier of the carrier corresponding to any one of the N logical carrier identifiers satisfies i mod N=0, i=1, 2, . . . , N, n is A positive integer, n+1≤i≤M-N+1.

In the implementation, when the communication is performed through the unlicensed spectrum, in order to reduce the interference between the transmitters, before the network side device sends the data to the first terminal device, the carrier corresponding to the first logical carrier identifier needs to be evaluated first. usage of In the case, the Listen before talk (LBT) technique is a commonly used carrier evaluation technique. Specifically, before the network side device hops to the first carrier determined according to the first logical carrier identifier, perform a clear channel assessment (CCA) on the first carrier, according to the assessment of the CCA. As a result, it is determined that when the first carrier is idle, data is transmitted on the first carrier.

In summary, in the embodiment of the present application, the network side device sends broadcast information on a carrier for transmitting broadcast information in an unlicensed spectrum, and sends the resource configuration information on the anchor carrier. The broadcast information includes information of an anchor carrier, where the resource configuration information is used to indicate a first logical carrier identifier, where the first logical carrier identifier is used to determine the network side device and the first terminal device in a next cycle of a current period. And transmitting, by the first terminal device, the broadcast information on a carrier for transmitting broadcast information in the unlicensed spectrum, according to the anchor carrier carried in the broadcast message, Receiving the resource configuration information on the anchor carrier, and determining, according to the resource configuration information, the first logical carrier identifier configured by the network side device for the first terminal device; the network side device and the Transmitting, by the first terminal device, data transmission on the first carrier determined according to the first logical carrier identifier in the next period, where the first The carrier identifier is used to uniquely identify the first carrier in the N carriers, where the N carriers are respectively used by the network side device and multiple terminal devices when transmitting data, and the anchor carrier is Determining one of the N carriers, so that the network side device performs data transmission with the terminal device through multiple carriers on the premise of satisfying the use requirement of the unlicensed spectrum, thereby improving utilization of unlicensed spectrum resources and wireless communication. The capacity of the system. Moreover, the network side device and the first terminal device perform data transmission on the first carrier determined by the first period in the next period, and the interference may also be reduced.

The following takes the network side device as the base station as an example, and the data transmission method on the unlicensed spectrum provided by the present application is described in detail by using two specific embodiments, where the base station and the terminal device comply with the FCC-related correlation on the unlicensed spectrum. Regulations.

The spectrum regulations divide communication devices using the spectrum into frequency hopping spread spectrum (FHSS) devices, digital modulation (DM), and hybrid mode devices. Different modes of communication devices must be different. the rule of. Among them, the FCC regulations on the use of communication equipment in the frequency band below 1 GHz include: (1) If the communication equipment is authenticated as FHSS, the carrier needs to be pseudo-randomly hopped, and one of the following two must be satisfied: if the carrier bandwidth is 25KHz-250kHz , the number of carriers is required to be no less than 25 and not more than 50, and the dwell time limit is to be observed. The dwell time of each carrier does not exceed 400 ms in 20 s; if the carrier bandwidth is 250 kHz-500 kHz, then The number of carriers required is not less than 50, and the dwell time of each carrier does not exceed 400 ms in 10s; (2) if the communication device is authenticated as DM, the carrier bandwidth needs to be not less than 500KHz, the number of carriers is not less than one, and needs to be satisfied. Power spectral density (PSD) limits, the power per 3 kHz spectrum does not exceed 8 dBm; (3) If the communication device is certified as a hybrid mode, the system can work in both HFSS and DM modes, when the system works in FHSS mode Meet FHSS requirements and meet DM requirements when working in DM mode

The regulatory restrictions imposed by the FCC on communication devices using the 2.4 GHz band include: if the authentication is FHSS, the carrier bandwidth is not less than 25 kHz, the number of carriers M is not less than 15, and the dwell time on a carrier within M seconds does not exceed 1 second. If the authentication is DM, the carrier bandwidth is not less than 500 kHz, the number of carriers is not less than one, and the PSD does not exceed the limit of 8 dBm/3 kHz; if the authentication is mixed mode, the system can work in both HFSS and DM modes, when the system When working in FHSS mode, it meets FHSS requirements, and when working in DM mode, it meets DM requirements. When the base station is in the FHSS mode, the N carriers used for data transmission by the base station and the plurality of terminal devices in each period are adjacent in the frequency domain, and when the base station is in the DM mode, the base station and the base station in each period When multiple terminal devices perform data transmission The N carriers used may or may not be adjacent in the frequency domain.

In a first specific embodiment, the base station and the terminal device operate in a frequency band below 1 GHz (902 MHz-928 MHz), and the bandwidth of each carrier in the frequency band is set to 180 kHz, each period is 100 ms, and the first time period in one cycle is 20 ms, and the second The duration is 80ms. In order to ensure that the base station transmits DRS on a fixed frequency band and meets the FCC requirements for the use of the frequency spectrum below 1 GHz, the base station needs to occupy at least three carriers in the frequency band below 1 GHz to transmit the DRS. In this embodiment, the base station occupies 3 carriers in the frequency band to transmit DRS, that is, the bandwidth of the carrier transmitting the DRS is 3×180 KHz=540 KHz, and the base station authenticates to the DM mode according to the FCC regulations for the spectrum below 1 GHz.

The base station uses N carriers to transmit data with multiple terminal devices. When N<3, the bandwidth of the N carriers is less than 360KHz. According to the FCC regulations for the spectrum below 1GHz, the base station is authenticated to the FHSS mode. The time-frequency resource occupied by the data transmission with the terminal device is as shown in FIG. 4, where D represents downlink data and U represents uplink data. When N≥3, the N carrier bandwidths are >500 kHz. According to the FCC regulations for the spectrum below 1 GHz, the base station authentication is also in the DM mode. At this time, the time-frequency resources occupied by the base station and the terminal device for data transmission may be As shown in FIG. 5 or FIG. 6, only three carriers are taken as an example in FIG. 5 and FIG. 6.

The process of data transmission between the base station and the first terminal device in the frequency band below 1 GHz is as shown in FIG. 3, and the first terminal device is any one of a plurality of terminal devices that perform data transmission with the base station, and specifically includes the following steps:

S701: The base station sends a DRS on a fixed carrier for transmitting a DRS, where the DRS includes: a primary synchronization signal PSS, a secondary synchronization signal SSS, and broadcast information, where the broadcast information includes information of an anchor carrier;

S702: The base station sends resource configuration information on the anchor carrier, where the resource configuration information is used to indicate a first logical carrier identifier.

S703: The first terminal acquires the first logical carrier identifier on the anchor carrier according to the DRS in a process of initially accessing a network, where the first logical carrier identifier is used to determine a current period. The first carrier used by the network side device and the first terminal device to transmit data in a cycle.

S704: The base station and the first terminal device perform frequency data transmission on the first carrier determined according to the first logical carrier identifier in the next period.

The first terminal device and the base station repeatedly perform step S704 until the data transmission process of the first terminal device and the base station ends.

In a second specific embodiment, the base station and the terminal device work in the 2.4 GHz frequency band (2400 MHz-2483.5 MHz), and the bandwidth of each carrier in the frequency band is 1.4 MHz, each period is 80 ms, and the first duration in one cycle is 3 ms. The second time is 75ms. There is a total of 83.5MHz available bandwidth in the 2.4GHz band, and the number of carriers in this band is greater than 15 (83.5/5.6>15). In this embodiment, the base station occupies one carrier in the frequency band to transmit DRS, that is, the bandwidth of the carrier transmitting the DRS is 1.4 MHz, according to the requirement that the base station transmit the DRS on the fixed frequency band and meet the requirements of the FCC for the 2.4 GHz spectrum. The FCC regulates the 2.4 GHz spectrum and the base station is certified to the DM mode.

The base station uses N carriers to perform data transmission with multiple terminal devices. When N≤4, the bandwidth of the N carriers is less than or equal to 5.6 MHz. According to the FCC regulations on the 2.4 GHz spectrum, the base station is authenticated in the FHSS mode. When N=4, the time-frequency resources occupied by the base station and the terminal device for data transmission are as shown in FIG. 8. FIG. 8 only takes 4 carriers as an example. When N>4, the N carrier bandwidth is greater than 500 kHz. According to the FCC's regulatory constraints on the 2.4 GHz spectrum, the base station authentication is also a DM mode, when N=5 and the N carriers are in the frequency domain in each period. The time-frequency resources occupied by the base station and the terminal device for data transmission are as shown in FIG. 9 , and FIG. 9 only takes 6 carriers as an example.

The process of data transmission between the base station and the first terminal device in the 2.4 GHz frequency band is as shown in FIG. 10, and specifically includes the following steps:

S1001: The base station performs CCA on a fixed carrier used for transmitting the DRS.

S1002: The base station sends, according to the result of the CCA, that the fixed carrier is idle, and sends a DRS on the fixed carrier, where the DRS includes: a primary synchronization signal PSS, a secondary synchronization signal, and broadcast information, and the broadcast information includes an anchor. Point carrier information.

S1003: The base station performs CCA on the anchor carrier.

S1004: The base station sends resource configuration information on the anchor carrier when the anchor carrier is idle according to the result of the CCA, where the resource configuration information is used by the first logical carrier identifier.

S1005: The first terminal acquires the first logical carrier identifier on the anchor carrier according to the DRS in a process of initially accessing a network, where the first logical carrier identifier is used to determine a current period. The first carrier used by the network side device and the first terminal device to transmit data in a cycle.

S1006: The network side device and the first terminal device perform frequency data transmission on the first carrier determined according to the first logical carrier identifier in the next period.

When the base station hops to send data to the first terminal device according to the first carrier to be hopped in the next period determined according to the first logical carrier identifier, the base station first refers to the first The carrier performs CCA, and determines, according to the result of the CCA, that the first carrier is idle, and sends data to the first terminal device on the first carrier.

The first terminal device and the base station repeatedly perform step S1006 until the data transmission process of the first terminal device and the base station ends.

Based on the above embodiment, the embodiment of the present application further provides a network side device, where the network side device is used to implement a data transmission method on an unlicensed frequency band as shown in FIG. 2, as shown in FIG. The 1100 includes a transceiver 1101 and a processor 1102.

The transceiver 1101 is configured to send broadcast information on a carrier for transmitting broadcast information in an unlicensed spectrum according to the indication of the processor 1102, where the broadcast information includes information of an anchor carrier, so that the first terminal device Receiving resource configuration information on the anchor carrier according to the information of the anchor carrier; and transmitting the resource configuration information on the anchor carrier; wherein the resource configuration information is used to indicate a first logical carrier identifier The first logical carrier identifier is used to determine a first carrier used by the network side device and the first terminal device to transmit data in a next cycle of a current period; the first logical carrier identifier is used for N carriers The first carrier is uniquely identified, and the N carriers are respectively used carriers when the network side device and the plurality of terminal devices transmit data, and the anchor carrier is one of the N carriers. The first terminal device is any one of the plurality of terminal devices, and N is a positive integer greater than one;

The processor 1102 is configured to control the transceiver to perform data transmission with the first terminal device on the first carrier determined according to the first logical carrier identifier by hopping in the next period.

Optionally, the network side device 1100 may further include a memory 1103. The memory 1103 can be used to store a software program that can be executed by the processor 1102 to implement a data transfer method on the unlicensed frequency band described above. In addition, various types of service data or user data may also be stored in the memory 1103.

Optionally, the memory 1103 may include a volatile memory, such as a random-access memory (RAM); the memory 1103 may also include a non-volatile memory. For example, a flash memory (also called a flash memory), a hard disk drive (HDD) or a solid-state drive (SSD); the memory 1103 may also include a combination of the above types of memories.

Optionally, the processor 1102 can be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP. The processor 1102 can also further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.

Alternatively, the processor 1102 and the transceiver 1101 and the memory 1103 may be connected to each other through a bus 1104. The bus 1104 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 11, but it does not mean that there is only one bus or one type of bus.

Optionally, the transceiver 1101 is further configured to: send system information on the anchor carrier according to the indication of the processor 1102.

Optionally, the processor 1102 is specifically configured to: determine, according to the first logical carrier identifier, the first carrier to be jumped to in the next period; and include in the next period Transmitting, by the transceiver, the broadcast information and the synchronization information on a second carrier for transmitting broadcast information and synchronization information, the synchronization information being used to indicate the first terminal device and the location The network side device performs synchronization; in the second duration included in the next period, instructing the transceiver to continue to perform data transmission with the first terminal device by jumping from the second carrier to the first carrier.

Optionally, the processor 1102 is specifically configured to: determine, according to the first logical carrier identifier, the first carrier to be jumped to in the next period; and include in the next period Within a period of time, instructing the transceiver to jump to a second carrier for transmitting broadcast information to transmit the broadcast information, and to jump to a third carrier for transmitting synchronization information to transmit synchronization information; Within a second duration of the period, the transceiver is instructed to hop from the second carrier and the third carrier to the first carrier to continue data transmission with the first terminal device.

Optionally, the processor 1102 is specifically configured to:

Determining, according to the first logical carrier identifier, a first physical carrier identifier according to a preset calculation rule, and using the carrier corresponding to the first physical carrier identifier as the first carrier to be redirected to the next period ;or

And determining, according to the preset calculation rule, the first physical carrier identifier according to the first physical carrier identifier and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum, and corresponding to the first physical carrier identifier The carrier is used as the first carrier to which the next cycle is to be redirected; or

Determining, according to the first logical carrier identifier and the identifier of the current period, a first physical carrier identifier according to a preset calculation rule, and using the carrier corresponding to the first physical carrier identifier as the next period to jump The first carrier to which it arrives; or,

And calculating, according to the preset calculation rule, the first physical carrier identifier according to the first physical carrier identifier, the identifier of the current period, and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum, The carrier corresponding to the first physical carrier identifier is used as the first carrier to which the next period is to be redirected;

Optionally, the identifier of the period includes one or more of a superframe number, a frame number, and a subframe number.

Optionally, the processor 1102 is specifically configured to: if the first carrier to be jumped to the next period is determined, and the next period determined according to the second logical carrier identifier is to be redirected to The fourth carrier is the same, and the carrier in the unlicensed spectrum that is not occupied in the next period is selected as the first carrier to be jumped to in the next period, or the transceiver 1101 is instructed to The next period does not perform data transmission with the first terminal device, and the second logical carrier identifier is any one of the logical carrier identifiers of the N carriers except the first logical carrier identifier. .

Optionally, the processor 1102 is further configured to: determine, according to the first logical carrier identifier, a logical carrier for the N carriers after the first carrier to which the next cycle is to be redirected Determining, by the second logical carrier identifier in the identifier, a pre-configured central frequency point of the first carrier to be jumped to in the next period according to the first logical carrier identifier, and identifying according to the second logical carrier identifier Determining a frequency interval to be satisfied between the center frequency points of the fourth carrier to be jumped to in the next cycle;

Determining, according to the center frequency point of the first carrier to be jumped to in the next cycle, and the frequency interval, determining the fourth carrier to be jumped to in the next cycle according to the second logical carrier identifier.

Based on the above embodiment, the embodiment of the present application further provides a terminal device, where the terminal device is used to implement a data transmission method on an unlicensed frequency band as shown in FIG. 2, and the terminal device 1200 is shown in FIG. The transceiver includes a transceiver 1201 and a processor 1202.

The processor 1202 is configured to acquire a first logical carrier identifier configured by the network side device, and in the next period, the transceiver 1201 is hopped to the first carrier determined according to the first logical carrier identifier. Performing data transmission with the network side device, where the first logical carrier identifier is used to determine a first carrier used by the network side device and the terminal device to transmit data in a next cycle of a current period, The first logical carrier identifier is used to uniquely identify the first carrier in the N carriers, where the N carriers are carriers used when the network side device and the plurality of the terminal devices transmit data respectively, the anchor The point carrier is one of the N carriers, and N is a positive integer greater than one.

The transceiver 1201 is configured to perform frequency-hopping on the next period according to the indication of the processor 1202 to perform data transmission with the network-side device on the first carrier determined according to the first logical carrier identifier.

Optionally, the terminal device 1200 may further include a memory 1203. The memory 1203 can be used to store a software program that can be executed by the processor 1202 to implement a data transmission method on the unlicensed frequency band described above. In addition, various types of service data or user data may also be stored in the memory 1203.

Alternatively, the memory 1203 may include volatile memory such as RAM; the memory 1203 may also include non-volatile memory such as flash memory, HDD or SSD). The memory 1103 may also include a combination of the above types of memories.

Optionally, the processor 1202 may be a CPU, an NP or a combination of a CPU and an NP. The processor 1202 may further include a hardware chip. The above hardware chip may be an ASIC, a PLD, or a combination thereof. The above PLD can be CPLD, FPGA, GAL or any combination thereof.

Optionally, the processor 1202 and the transceiver 1201 and the memory 1203 may be connected to each other through a bus 1204. The bus 1204 may be a PCI bus or EIS) bus or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12, but it does not mean that there is only one bus or one type of bus.

Optionally, the processor 1202 is specifically configured to: indicate, by the transceiver 1201, carrier receiving broadcast information for transmitting broadcast information in an unlicensed spectrum, where the broadcast information includes information of an anchor carrier; Point carrier The information indicates that the transceiver 1201 is on the anchor carrier, and receives resource configuration information that is sent by the network side device on the anchor carrier; and determines the first logical carrier identifier according to the resource configuration information.

Optionally, the transceiver 1201 is further configured to: receive the system information sent by the network side device on the anchor carrier according to the instruction of the processor 1202.

Optionally, the processor 1202 is specifically configured to: determine, according to the first logical carrier identifier, the first carrier to be jumped to in the next period; and include the first period in the next period Within a period of time, the transceiver is instructed to jump to the first carrier to continue data transmission with the network side device.

Optionally, the processor 1202 is configured to: calculate, according to the preset calculation rule, a first physical carrier identifier calculated according to a preset calculation rule according to the first logical carrier identifier, where the first physical The carrier corresponding to the carrier identifier is used as the first carrier to which the next cycle is to be redirected; or

Optionally, the processor 1202 is further configured to: if the first carrier to which the next cycle is to be redirected is determined, and the next cycle determined according to the second logical carrier identifier is to be redirected to The second carrier is the same, and the carrier that is not occupied in the next period in the unlicensed spectrum is selected as the first carrier to be jumped to in the next period, or the transceiver 1201 is instructed to The second cycle is not used to perform data transmission with the network side device, and the second logical carrier identifier is any one of the logical carrier identifiers of the N carriers except the first logical carrier identifier.

Optionally, the processor 1202 is further configured to: determine, according to the first logical carrier identifier, a logical carrier for the N carriers after the first carrier to which the next cycle is to be redirected Determining, by the second logical carrier identifier in the identifier, a pre-configured central frequency point of the first carrier to be jumped to in the next period according to the first logical carrier identifier, and identifying according to the second logical carrier identifier Determining a frequency interval to be satisfied between center frequency points of the second carrier to be jumped to in the next cycle; according to a center frequency point of the first carrier to be jumped to in the next cycle and the frequency interval Determining, according to the second logical carrier identifier, the second carrier to be redirected to in a next cycle.

In summary, the embodiment of the present application provides a data transmission method and device on an unlicensed frequency band, in which the network side device sends a broadcast on a carrier for transmitting broadcast information in an unlicensed spectrum. And transmitting the resource configuration information on the anchor carrier, where the broadcast information includes information of an anchor carrier, where the resource configuration information is used to indicate a first logical carrier identifier, where the first logical carrier identifier is used. Determining, by using the first carrier used by the network side device and the first terminal device to transmit data, in the next period of the current period, so that the first terminal device is used to transmit broadcast information on the carrier in the unlicensed spectrum Receiving the broadcast information, and carrying according to the broadcast message The information of the anchor carrier is received on the anchor carrier to receive resource configuration information, and the first logical carrier identifier configured by the network side device for the first terminal device is determined according to the resource configuration information; And the network side device and the first terminal device perform data transmission on the first carrier determined by the first logical carrier identifier in the next period, where the first logical carrier identifier is used in the N The first carrier is uniquely identified by the carrier, and the N carriers are respectively used by the network side device and the plurality of terminal devices, and the anchor carrier is one of the N carriers. Therefore, the network side device performs data transmission with the terminal device through multiple carriers on the premise of satisfying the use requirement of the unlicensed spectrum, thereby improving the utilization of the unlicensed spectrum resources and the capacity of the wireless communication system. Moreover, the network side device and the first terminal device perform data transmission on the first carrier determined by the first period in the next period, and the interference may also be reduced.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A data transmission method on an unlicensed spectrum, characterized in that the method comprises:

The network side device sends broadcast information on a carrier for transmitting broadcast information in an unlicensed spectrum, where the broadcast information includes information of an anchor carrier, so that the first terminal device sends the anchor point according to the information of the anchor carrier. Receiving resource configuration information on a carrier;

The network side device sends the resource configuration information on the anchor carrier, where the resource configuration information is used to indicate a first logical carrier identifier, where the first logical carrier identifier is used to determine a next period in a current period. The first carrier used by the network side device and the first terminal device to transmit data; the first logical carrier identifier is used to uniquely identify the first carrier among the N carriers, and the N carriers are the network a carrier used by the side device and the plurality of terminal devices to transmit data, the anchor carrier is one of the N carriers, and the first terminal device is any one of the multiple terminal devices, where Is a positive integer greater than one;

And the network side device performs data transmission with the first terminal device by hopping to the first carrier determined according to the first logical carrier identifier in the next period.
The method of claim 1 wherein the method further comprises:

The network side device sends system information on the anchor carrier.
The method according to claim 1 or 2, wherein the network side device hops to the first carrier determined according to the first logical carrier identifier in the next cycle and the first terminal device Data transfer, including:

Determining, by the network side device, the first carrier to be redirected in the next period according to the first logical carrier identifier;

The network side device hops to transmit the broadcast information and the synchronization information on a second carrier for transmitting broadcast information and synchronization information within a first duration included in the next period, where the synchronization information is used. Instructing the first terminal device to synchronize with the network side device;

The network side device continues to perform data transmission with the first terminal device by jumping from the second carrier to the first carrier within the second duration included in the next period.
The method according to claim 1 or 2, wherein the network side device hops to the first carrier determined according to the first logical carrier identifier in the next cycle and the first terminal device Data transfer, including:

Determining, by the network side device, the first carrier to be redirected in the next period according to the first logical carrier identifier;

Transmitting, by the network side device, the broadcast information to a second carrier for transmitting broadcast information, and jumping to a third carrier for transmitting synchronization information, within a first duration included in the next period Transfer synchronization information;

The network side device continues to perform data transmission with the first terminal device by jumping from the second carrier and the third carrier to the first carrier within the second duration included in the next period.
The method according to claim 3 or 4, wherein the network side device determines, according to the first logical carrier identifier, the first carrier to be redirected to in the next period, including:

The network side device calculates, according to the first logical carrier identifier, a first physical carrier identifier according to a preset calculation rule, and uses a carrier corresponding to the first physical carrier identifier as a jump to the next period. The first carrier; or,

The network side device calculates, according to the first physical carrier identifier and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum, the first physical carrier identifier according to a preset calculation rule, where the a carrier corresponding to a physical carrier identifier as the first carrier to which the next cycle is to be redirected; or

The network side device calculates, according to the first logical carrier identifier and the identifier of the current period, a first physical carrier identifier according to a preset calculation rule, and uses a carrier corresponding to the first physical carrier identifier as the lower The first carrier to which a cycle is to be jumped; or,

The network side device calculates the first physics according to the preset calculation rule according to the first logical carrier identifier, the identifier of the current period, and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum. a carrier identifier, where the carrier corresponding to the first physical carrier identifier is used as the first carrier to which the next period is to be redirected;

The physical carrier identifier is used to uniquely identify each of the M carriers obtained by the unlicensed spectrum division, where M is a positive integer greater than N.
The method of any of claims 3-5, wherein the method further comprises:

And if the network side device determines that the first carrier to be jumped to by the next period is the same as the fourth carrier to be jumped to according to the second logical carrier identifier, The network side device selects, in the unlicensed spectrum, a carrier that is not occupied in the next period, as the first carrier to be jumped to in the next period, or the network side device is in the next One cycle does not perform data transmission with the first terminal device, and the second logical carrier identifier is any one of the logical carrier identifiers of the N carriers except the first logical carrier identifier.
The method according to any one of claims 3-5, wherein the network side device determines, after the first carrier to be jumped to in the next cycle, according to the first logical carrier identifier, The method also includes:

Determining, by the second logical carrier identifier, the logical carrier identifier of the N carriers, the network side device determining, according to the first logical carrier identifier, the first carrier to be jumped to in the next period a center frequency point, and a frequency interval to be satisfied between a center frequency point of a fourth carrier to be jumped to in the next period determined according to the second logical carrier identifier;

Determining, according to the center frequency point of the first carrier to be jumped to in the next cycle, and the frequency interval, determining the fourth carrier to be jumped to in the next cycle according to the second logical carrier identifier.
The method of claim 5 wherein the identification of the period comprises one or more of a superframe number, a frame number, and a subframe number.
A data transmission method on an unlicensed spectrum, characterized in that the method comprises:

The first terminal device acquires a first logical carrier identifier configured by the network side device for the first terminal device, where the first logical carrier identifier is used to determine the network side device and the first terminal device in a next cycle of the current period a first carrier used for transmitting data, where the first logical carrier identifier is used to uniquely identify the first carrier among N carriers, where the N carriers are when the network side device transmits data with multiple terminal devices a carrier used by the carrier, the anchor carrier is one of the N carriers, the first terminal device is any one of the multiple terminal devices, and N is a positive integer greater than 1.

And transmitting, by the first terminal device, data transmission to the network side device on the first carrier determined according to the first logical carrier identifier in the next period.
The method according to claim 9, wherein the first terminal device acquires a first logical carrier identifier configured by the network side device for the first terminal device, and includes:

The first terminal device receives broadcast information in a carrier for transmitting broadcast information in an unlicensed spectrum, where the broadcast information includes information of an anchor carrier;

Receiving, by the first terminal device, the resource configuration information sent by the network side device on the anchor carrier according to the information of the anchor carrier to the anchor carrier;

Determining, by the first terminal device, the first logical carrier identifier according to the resource configuration information.
The method of claim 9 or 10, wherein the method further comprises:

The first terminal device sends the system information sent by the network side device on the anchor carrier according to the information of the anchor carrier to the anchor carrier.
The method according to any one of claims 9-11, wherein the first terminal device hops to the first carrier determined according to the first logical carrier identifier in the next cycle and The network side device performs data transmission, including:

Determining, by the first terminal device, the first carrier to be jumped to in the next period according to the first logical carrier identifier;

The first terminal device skips to the first carrier to continue data transmission with the network side device within a first duration included in the next period.
The method according to claim 12, wherein the first terminal device determines, according to the first logical carrier identifier, the first carrier to be redirected to in the next period, including:

According to the first logical carrier identifier, the first terminal device calculates, according to a preset calculation rule, that the first physical carrier identifier is calculated according to a preset calculation rule, and the carrier corresponding to the first physical carrier identifier is used as a Said first carrier to which the next cycle is to be jumped; or

The first terminal device calculates, according to the first physical carrier identifier and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum, a first physical carrier identifier according to a preset calculation rule, where the The carrier corresponding to the first physical carrier identifier is used as the first carrier to which the next period is to be redirected; or

The first terminal device calculates, according to the first logical carrier identifier and the identifier of the current period, a first physical carrier identifier according to a preset calculation rule, and uses the carrier corresponding to the first physical carrier identifier as the The first carrier to which the next cycle will jump; or,

The first terminal device calculates, according to the first logical carrier identifier, the identifier of the current period, and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum, according to a preset calculation rule. a physical carrier identifier, where the carrier corresponding to the first physical carrier identifier is used as the first carrier to which the next period is to be redirected;

The physical carrier identifier is used to uniquely identify each of the M carriers obtained by the unlicensed spectrum division, where M is a positive integer greater than N.
The method of claim 12 or 13, wherein the method further comprises:

And if the first terminal device determines that the first carrier to be jumped to by the next period is the same as the second carrier to be jumped to according to the second logical carrier identifier, The first terminal device selects, in the unlicensed spectrum, a carrier that is not occupied in the next period, as the first carrier to which the next period is to be redirected, or the first terminal device is in the The second cycle is not used to perform data transmission with the network side device, and the second logical carrier identifier is any one of the logical carrier identifiers of the N carriers except the first logical carrier identifier.
The method according to any one of claims 12-14, wherein the first terminal device is After the first logical carrier identifier is determined, after the first carrier to be redirected to the next period, the method further includes:

Determining, according to the second logical carrier identifier of the logical carrier identifiers of the N carriers, a pre-configured center frequency point of the first carrier to be jumped to in the next period determined according to the first logical carrier identifier, a frequency interval to be satisfied between a center frequency point of the second carrier to be jumped to in the next cycle determined according to the second logical carrier identifier;

Determining, according to the center frequency point of the first carrier to be jumped to in the next cycle, and the frequency interval, determining the second carrier to be jumped to in the next cycle according to the second logical carrier identifier.
The method of claim 13 wherein the identification of the period comprises one or more of a superframe number, a frame number, and a subframe number.
A network side device, comprising: a transceiver and a processor;

The transceiver is configured to send broadcast information on a carrier for transmitting broadcast information in an unlicensed spectrum according to an indication of the processor, where the broadcast information includes information of an anchor carrier, so that the first terminal device according to the The information of the anchor carrier is received on the anchor carrier to receive resource configuration information; and the resource configuration information is sent on the anchor carrier; wherein the resource configuration information is used to indicate the first logical carrier identifier, where Determining, by the first logical carrier identifier, a first carrier used by the network side device and the first terminal device to transmit data in a next cycle of the current period; the first logical carrier identifier is used to be unique among the N carriers Identifying the first carrier, where the N carriers are carriers used when the network side device and the plurality of terminal devices transmit data, and the anchor carrier is one of the N carriers, where the A terminal device is any one of the plurality of terminal devices, where N is a positive integer greater than one;

The processor is configured to control, by the transceiver, frequency hopping to the first carrier determined according to the first logical carrier identifier to perform data transmission with the first terminal device in the next period.
The network side device according to claim 17, wherein the transceiver is further configured to: send system information on the anchor carrier according to an indication of the processor.
The network side device according to claim 17 or 18, wherein the processor is specifically configured to:

Determining, according to the first logical carrier identifier, the first carrier to be jumped to in the next period;

Transmitting, by the transceiver, to the second carrier for transmitting broadcast information and synchronization information, the broadcast information and the synchronization information, in the first duration included in the next period, where the synchronization information is used Instructing the first terminal device to synchronize with the network side device;

And indicating, in the second duration included in the next period, that the transceiver skips from the second carrier to the first carrier to continue data transmission with the first terminal device.
The network side device according to claim 17 or 18, wherein the processor is specifically configured to:

Determining, according to the first logical carrier identifier, the first carrier to be jumped to in the next period;

Within the first duration included in the next period, instructing the transceiver to hop to transmit the broadcast information on a second carrier for transmitting broadcast information, and to jump to a third carrier for transmitting synchronization information Transfer synchronization information;

And indicating, in the second duration included in the next period, that the transceiver skips from the second carrier and the third carrier to the first carrier to continue data transmission with the first terminal device.
The network side device according to claim 19 or 20, wherein the processor is specifically configured to:

Determining, according to the first logical carrier identifier, a first physical carrier identifier according to a preset calculation rule, and using the carrier corresponding to the first physical carrier identifier as the first carrier to be redirected to the next period ;or

And corresponding to each of the available carriers included in the unlicensed spectrum according to the first logical carrier identifier The carrier identifier is obtained, and the first physical carrier identifier is calculated according to a preset calculation rule, and the carrier corresponding to the first physical carrier identifier is used as the first carrier to be jumped to in the next period; or

Determining, according to the first logical carrier identifier and the identifier of the current period, a first physical carrier identifier according to a preset calculation rule, and using the carrier corresponding to the first physical carrier identifier as the next period to jump The first carrier to which it arrives; or,

And calculating, according to the preset calculation rule, the first physical carrier identifier according to the first physical carrier identifier, the identifier of the current period, and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum, The carrier corresponding to the first physical carrier identifier is used as the first carrier to which the next period is to be redirected;

The physical carrier identifier is used to uniquely identify each of the M carriers obtained by the unlicensed spectrum division, where M is a positive integer greater than N.
The network side device according to any one of claims 19 to 21, wherein the processor is specifically configured to:

If it is determined that the first carrier to which the next cycle is to be redirected is the same as the fourth carrier to which the next cycle is to be jumped according to the second logical carrier identifier, selecting the unlicensed spectrum The carrier that is not occupied in the next period is used as the first carrier to be redirected to the next period, or indicates that the transceiver does not perform with the first terminal device in the next period. Data transmission, where the second logical carrier identifier is any one of the logical carrier identifiers of the N carriers except the first logical carrier identifier.
The network side device according to any one of claims 19 to 21, wherein the processor is further configured to:

Determining, according to the first logical carrier identifier, a pre-configured second logical carrier identifier of the logical carrier identifiers of the N carriers after the first carrier to which the next period is to be redirected a center frequency point of the first carrier to be jumped to in the next period determined according to the first logical carrier identifier, and a fourth carrier to be redirected to be determined in the next period according to the second logical carrier identifier The frequency interval between the center frequency points to be met;

Determining, according to the center frequency point of the first carrier to be jumped to in the next cycle, and the frequency interval, determining the fourth carrier to be jumped to in the next cycle according to the second logical carrier identifier.
A terminal device, comprising: a transceiver and a processor;

The processor is configured to acquire a first logical carrier identifier configured by the network side device, and instruct the transceiver to hop to the first carrier determined according to the first logical carrier identifier in the next period The network side device performs data transmission;

The transceiver is configured to perform frequency-hopping on the next period according to an indication of the processor to perform data transmission with the network-side device on the first carrier determined according to the first logical carrier identifier;

The first logical carrier identifier is used to determine a first carrier used by the network side device and the terminal device to transmit data in a next cycle of a current period, where the first logical carrier identifier is used in N The first carrier is uniquely identified by the carrier, and the N carriers are respectively used by the network side device and the plurality of the terminal devices, and the anchor carrier is the N carriers. One, N is a positive integer greater than one.
The terminal device according to claim 24, wherein the processor is specifically configured to:

Transmitting, by the transceiver, carrier information for transmitting broadcast information in an unlicensed spectrum, the broadcast information including information of an anchor carrier;

And indicating, according to the information of the anchor carrier, the transceiver to the anchor carrier, and receiving resource configuration information sent by the network side device on the anchor carrier;

Determining the first logical carrier identifier according to the resource configuration information.
The terminal device according to claim 24 or 25, wherein the transceiver is further configured to:

Receiving system information sent by the network side device on the anchor carrier according to an indication of the processor.
The terminal device according to any one of claims 24 to 26, wherein the processor is specifically configured to:

Determining, according to the first logical carrier identifier, the first carrier to be jumped to in the next period;

Within the first duration included in the next period, the transceiver is instructed to skip to the first carrier to continue data transmission with the network side device.
The terminal device according to claim 27, wherein the processor is specifically configured to:

According to the first logical carrier identifier, the first physical carrier identifier is calculated according to a preset calculation rule, and the carrier corresponding to the first physical carrier identifier is to be skipped as the next period. Going to the first carrier; or,

And determining, according to the preset calculation rule, the first physical carrier identifier according to the first physical carrier identifier and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum, and corresponding to the first physical carrier identifier The carrier is used as the first carrier to which the next cycle is to be redirected; or

Determining, according to the first logical carrier identifier and the identifier of the current period, a first physical carrier identifier according to a preset calculation rule, and using the carrier corresponding to the first physical carrier identifier as the next period to jump The first carrier to which it arrives; or,

And calculating, according to the preset calculation rule, the first physical carrier identifier according to the first physical carrier identifier, the identifier of the current period, and the physical carrier identifier corresponding to each available carrier included in the unlicensed spectrum, The carrier corresponding to the first physical carrier identifier is used as the first carrier to which the next period is to be redirected;

The physical carrier identifier is used to uniquely identify each of the M carriers obtained by the unlicensed spectrum division, where M is a positive integer greater than N.
The terminal device according to claim 27 or 28, wherein the processor is further configured to:

If it is determined that the first carrier to which the next cycle is to be redirected is the same as the second carrier to which the next cycle is to be jumped according to the second logical carrier identifier, selecting the unlicensed spectrum The carrier that is not occupied in the next period is used as the first carrier to be redirected to the next period, or indicates that the transceiver does not perform with the first terminal device in the next period. Data transmission, where the second logical carrier identifier is any one of the logical carrier identifiers of the N carriers except the first logical carrier identifier.
The terminal device according to claim 27 or 28, wherein the processor is further configured to:

Determining, according to the first logical carrier identifier, a pre-configured second logical carrier identifier of the logical carrier identifiers of the N carriers after the first carrier to which the next period is to be redirected a center frequency point of the first carrier to be jumped to in the next cycle determined according to the first logical carrier identifier, and the first to be jumped to in the next cycle determined according to the second logical carrier identifier The frequency interval to be satisfied between the center frequencies of the two carriers;

Determining, according to the center frequency point of the first carrier to be jumped to in the next cycle, and the frequency interval, determining the second carrier to be jumped to in the next cycle according to the second logical carrier identifier.