WO2018137219A1

WO2018137219A1 - Information transmission method and apparatus

Info

Publication number: WO2018137219A1
Application number: PCT/CN2017/072703
Authority: WO
Inventors: 汲桐; 金哲; 张维良
Original assignee: 华为技术有限公司
Priority date: 2017-01-25
Filing date: 2017-01-25
Publication date: 2018-08-02
Also published as: CN109479287A

Abstract

An information transmission method and apparatus. The method comprises: a network side device acquiring a first signal; and the network side device sending the first signal on a first resource, wherein the first resource comprises at least one time domain symbol from among nine time domain symbols of at least one radio frame in a narrow-band Internet of Things, and the nine time domain symbols comprise the first three time domain symbols of a No. 5 subframe, the first three time domain symbols of a No. 0 subframe and the first three time domain symbols of a No. 9 subframe. By means of the method, waste of resources can be prevented.

Description

Information transmission method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.

Background technique

The Narrow Band Internet of Things (NB-IoT) is built on a cellular network and can consume at least 180KHz of bandwidth. It can be deployed directly on the Global System for Mobile Communication (GSM) network and universal mobile communications. A Universal Mobile Telecommunications System (UMTS) network or a Long Term Evolution (LTE) network to reduce deployment costs and achieve smooth upgrades. The NB-IoT uses the licensed frequency band and can be deployed in the in-band, guard-band or standalone mode to coexist with the existing network.

In the prior art, three deployment modes are in the synchronization signal, such as Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), and Resource Mapping of Master Information Block (MIB). No distinction is made, and resource mapping is performed according to the in-band mode, that is, only the last 11 orthogonal frequency division multiplexing (OFDM) symbols of the subframe 5 are used to transmit the PSS, and only the subframe 9 is used. The 11 OFDM symbols transmit the SSS, and only the last 11 OFDM symbols of the 0th subframe are used to transmit the MIB.

The first three OFDM symbols of the subframes 5, 0, and 9 are in an idle state in the protection mode and the independent carrier deployment mode, so that resources are wasted.

Summary of the invention

The embodiment of the invention provides an information transmission method and device, which are used to solve the technical problem of resource waste existing in the prior art.

In a first aspect, an embodiment of the present invention provides an information transmission method, where the method includes: a network side device first signal; a network side device sends the first signal on a first resource; wherein the first resource includes a narrowband At least one of the nine time domain symbols of at least one radio frame in the Internet of Things, the nine time domain symbols including the first three time domain symbols of the fifth subframe, and the first three of the zero subframes The time domain symbol and the first 3 time domain symbols of the 9th subframe. Because the first signal is transmitted by using the idle time domain symbol, on the one hand, the idle resource is effectively utilized, the resource waste is avoided, and on the other hand, the information transmission performance of the system can be improved.

In a second aspect, an embodiment of the present invention provides an information transmission method, where the method includes: determining, by a terminal device, a first resource, where the first resource includes nine time domain symbols of at least one radio frame in a narrowband Internet of Things At least one time domain symbol, the first three time domain symbols of the fifth subframe, the first three time domain symbols of the zero subframe, and the first three time domain symbols of the subframe 9 . The terminal device then receives the first signal on the first resource. Because the first signal is transmitted by using the idle time domain symbol, on the one hand, the idle resource is effectively utilized, the resource waste is avoided, and on the other hand, the information transmission performance of the system can be improved.

In the above-described embodiment of the present application, in one possible design, the first signal includes at least one of a synchronization signal and a system message. By this method, the transmission performance of the synchronization signal and/or system message can be improved.

In the above embodiment of the present application, in one possible design, the synchronization signal is a complete synchronization signal or a partial synchronization signal; and/or

The system message is a complete master information block or a partial master information block. With this method, it is possible to design the synchronization signal and/or the system message separately, or to extend the existing synchronization signal and/or system message.

In the above embodiment of the present application, in one possible design, the synchronization signal is a primary synchronization signal or a secondary synchronization signal. By this method, the synchronization performance of the existing communication system can be improved.

In the above embodiment of the present application, in a possible design, the first signal includes at least one sub-signal, each of the sub-signals is a Zadoff-Chu sequence, or a Zadoff-Chu sequence and a complex number The product of. Through this design, the cross-correlation of the synchronization signal is good, and good synchronization performance and reliability can be obtained.

In the above embodiment of the present application, in one possible design, the Zadoff-Chu sequence corresponding to each of the sub-signals is the same. With this design, the processing complexity on the receiving side can be reduced.

In the above embodiment of the present application, in one possible design, the length of the Zadoff-Chu sequence is an integer greater than or equal to 11. With this design, better synchronization performance can be obtained.

In the above embodiment of the present application, in one possible design, the Zadoff-Chu sequence satisfies the following formula:

e ^{-jπun(n+1)/L} , n=0,1,...,L-1, where the integer u is the root index of the Zadoff-Chu sequence, e is a natural constant, j is an imaginary unit, π For the pi, a positive integer L is the length of the Zadoff-Chu sequence, and an integer n is the element number of the Zadoff-Chu sequence. With this design, the cross-correlation of the first signal is good, so that better synchronization performance can be obtained.

In the above embodiment of the present application, in one possible design, the Zadoff-Chu sequence has a root index of 5. In the case of a root index of 5, the cross-correlation of the first signal is good, so that better synchronization performance can be obtained; and the existing NB-IoT PSS is also a Zadoff-Chu sequence using a root index of 5, The continued use of the Zadoff-Chu sequence of the root index 5 in the embodiment can reduce the processing complexity of the terminal.

In the above embodiment of the present application, in one possible design, the at least one sub-signal includes 3 sub-signals respectively carried in the first 3 subframes of the 5th subframe of the at least one radio frame. On the time domain symbol. With this design, since the PSS in the existing NB-IoT is carried on the last 11 time-domain symbols of the subframe 5 of each radio frame, this embodiment uses the first three time-domain symbols of the subframe 5, which can The terminal device detects a complete subframe number 5 to obtain a PSS signal, which is beneficial to improve synchronization performance.

In the above embodiment of the present application, in one possible design, the sub-signals carried on the first, second, and third time-domain symbols of the subframe number 5 are respectively used as (1, 1, 1). ), (1, -1, 1), (1, -1, -1), (-1, 1, 1), (-1, -1, 1) or (-1, -1, -1) . Through this design, the complexity of the synchronization process of the terminal device can be reduced; and the above complex selection can be better combined with the complex number used by the PSS in the existing NB-IoT, that is, the sequence correlation of the PSS can be maintained by the symbol level scrambling code. To ensure good synchronization performance.

In a third aspect, an embodiment of the present invention provides an information transmission apparatus, which is used to implement a function of a network side device behavior in the foregoing method design, and the function may be implemented by hardware, or may be implemented by hardware corresponding software. . The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the information transmission device includes a processor and a transmitter configured to support the network side device to perform a corresponding function in the above method. The transmitter is configured to support communication between the network side device and the terminal device, and send information or instructions involved in the foregoing method to the terminal device. The network side device may also be packaged A memory is provided for coupling with the processor, which holds program instructions and data necessary for the network side device.

In a fourth aspect, an embodiment of the present invention provides a terminal device. The terminal device has a function of realizing the behavior of the terminal device in the above method design. 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. The modules can be software and/or hardware.

In one possible design, the terminal device includes a processor and a receiver. The processor is configured to determine a first resource, and the receiver is configured to receive a first signal on the first resource. The terminal device may further include a memory for coupling with the processor, which stores program instructions and data necessary for the network side device.

In a fifth aspect, an embodiment of the present invention provides a communication system, which is used to include a network side device and a terminal device in the foregoing device embodiment.

In a sixth aspect, an embodiment of the present invention provides a non-volatile computer storage medium, where the non-volatile computer storage medium stores program code, where the program code includes the first aspect to the second Any of the possible methods of the method in the design.

DRAWINGS

1 is a structural diagram of a communication network system according to an embodiment of the present invention;

2 is a structural diagram of a communication device according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for transmitting information on a device side of a network side according to an embodiment of the present disclosure;

FIG. 4 is a flowchart of a method for transmitting information on a terminal device side according to an embodiment of the present invention;

FIG. 5 is a functional block diagram of an information transmission apparatus according to an embodiment of the present invention;

FIG. 6 is a functional block diagram of another information transmission apparatus according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention.

An information transmission method provided by an embodiment of the present invention can be applied to a communication network system. Please refer to FIG. 1 , which is a structural diagram of a possible communication network system according to an embodiment of the present invention. As shown in the structure of FIG. 1, the communication network system includes a network side device and a plurality of terminal devices. The network side device is a service network side device of the terminal device, and the service side network side device refers to the radio resource control (RRC) connection and the non-access stratum (Non-Access Stratum) for the terminal device through the wireless air interface protocol. Abbreviation: NAS) Network-side devices for services such as mobility management and security input. The network side device and the terminal device can communicate through the air interface protocol.

It should be understood that only four terminal devices (isolated terminals) and one network side device are shown in the communication system shown in FIG. 1, but the present invention is not limited thereto. Other numbers of terminal devices may also be included in the coverage of the network side device. Further, the communication system in which the network side device and the terminal device are located in FIG. 1 may further include other network entities, such as a network controller and/or a mobility management entity, which are not limited in the embodiment of the present invention.

It should be understood that the communication network system shown in FIG. 1 may be an existing NB-IoT, or may be a communication system similar to NB-IoT as the system evolves, so the Internet of Things or NB mentioned in the embodiment of the present invention. IoT is a system of this type Generally speaking, it is not limited to the NB-IoT referred to in the prior art.

The network side device mentioned in this document may be in a base station (Base Transceiver Station, BTS) in GSM or Code Division Multiple Access (CDMA), or may be a Wideband Code Division Multiple (Wideband Code Division Multiple). Base station (English: NodeB; NB for short) in Access, WCDMA), and may also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an access point, or a base station in a future 5G network, etc. This article is not limited.

The terminal device mentioned herein may be a wireless terminal device or a wired terminal device, and the wireless terminal device may be a device that provides voice and/or other service data connectivity to the user, a handheld device with wireless connection function, or Connect to other processing devices of the wireless modem. The wireless terminal device 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 computers, for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (Personal Digital Assistant, PDA) and other equipment. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, or a remote terminal. Access Terminal, User Terminal, User Agent, User Device or User Equipment.

In addition, the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist at the same time. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

The description of the embodiments of the present invention is made by using the LTE system as an example, which may change with the evolution of the network. For specific evolution, refer to the description in the corresponding standard.

Referring to FIG. 2, FIG. 2 is a schematic structural diagram of a communication device according to an embodiment of the present invention. The communication device is, for example, the above network side device and terminal device. As shown in FIG. 2, the communication device includes a processor 10, a transmitter 20, a receiver 30, a memory 40, and an antenna 50. The memory 40, the transmitter 20 and the receiver 30 and the processor 10 can be connected via a bus. Of course, in actual use, the memory 40, the transmitter 20, and the receiver 30 and the processor 10 may not be a bus structure, but may be other structures, such as a star structure, which is not specifically limited in the present application.

Optionally, the processor 10 may be a general-purpose central processing unit or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be A hardware circuit developed using a Field Programmable Gate Array (FPGA) can be a baseband processor.

Alternatively, processor 10 may include at least one processing core.

Optionally, the memory 40 may include one or more of a read only memory (English: Read Only Memory, ROM for short), a random access memory (English: Random Access Memory, RAM), and a disk storage. Memory 40 is used to store data and/or instructions needed by processor 10 to operate. The number of memories 40 may be one or more.

Alternatively, the transmitter 20 and the receiver 30 may be physically independent of each other or integrated. Transmitter 20 can transmit data via antenna 50. Receiver 30 can receive data via antenna 50.

Please refer to FIG. 3, which is a flowchart of a method for transmitting information on the network side device side in this embodiment. The method includes the following:

Step 101: The network side device acquires the first signal.

Step 102: The network side device sends the first signal on the first resource, where the first resource includes at least one time domain symbol of the nine time domain symbols of the at least one radio frame in the narrowband Internet of Things. The time domain symbols include the first 3 time domain symbols of the 5th subframe, the first 3 time domain symbols of the 0th subframe, and the first 3 time domain symbols of the 9th subframe.

Correspondingly, a flowchart of the information transmission method on the terminal device side is shown in FIG. 4, and the method includes:

Step 201: The terminal device determines a first resource, where the first resource includes at least one time domain symbol of the nine time domain symbols of the at least one radio frame in the narrowband Internet of Things, and the nine time domain symbols include the fifth sub- The first 3 time domain symbols of the frame, the first 3 time domain symbols of the 0th subframe, and the first 3 time domain symbols of the 9th subframe;

Step 202: The terminal device receives the first signal on the first resource.

Optionally, the first signal may include a synchronization signal and/or a system message.

Optionally, the synchronization signal may be a PSS or an SSS.

Optionally, the synchronization signal is a complete synchronization signal or a partial synchronization signal. For example, if the synchronization signal is PSS, the first signal in step 101 may be a complete PSS or a partial PSS. For another example, if the synchronization signal is SSS, the first signal in step 101 may be a complete SSS or a partial SSS.

Optionally, the first signal may include a partial synchronization signal, for example, the first signal includes a partial PSS and a partial SSS, and may also include a partial PSS and a complete SSS, and may also include a complete PSS and a partial SSS. It can also include a full PSS and a full SSS.

Optionally, the synchronization signal is not limited to the PSS and the SSS in the present invention, and the synchronization signal may be any signal that the terminal device can complete the synchronization process according to the synchronization process, including time synchronization, frequency synchronization, and radio frame number synchronization. At least one process in the cell identity acquisition.

It should be noted that the complete synchronization signal means that the terminal device can complete the synchronization process by parsing the first signal, and the partial synchronization signal means that the terminal device needs to analyze the first signal and other synchronization signals to complete the synchronization process.

Optionally, the system message includes a main information block and/or at least one System Information Block (SIB).

Optionally, the main information block is a complete main information block or a part of the main information block. For example, a complete master block can convey all the information passed by the full MIB, while a partial master block can pass some of the information passed by the full MIB.

Optionally, each SIB in the at least one SIB is a complete SIB or a partial SIB. For example, a complete SIB can pass all the information transmitted by the SIB, and a part of the SIB can transmit a complete part of the information transmitted by the SIB.

Optionally, the first signal may include other signals, such as a paging indication signal, used to indicate a paging condition of the terminal device.

Optionally, the time domain symbol is, for example, an OFDM symbol. Of course, as the system evolves, it can also be a time domain symbol of other names.

Optionally, in step 101, the network side device may acquire a corresponding first signal according to a transmission period specified by the protocol, for example, when the current time is a periodic time when the PSS is sent, the PSS is acquired.

The above limitation on the first signal is only an example. In actual use, the first signal may also be other signals, the present invention. The embodiment is not specifically limited.

Optionally, the first resource is at least one time domain symbol of the nine time domain symbols in the at least one radio frame in the narrowband Internet of Things, and the nine time domain symbols include the first three time slots of the fifth subframe. The domain symbol, the first 3 time domain symbols of the 0th subframe, and the first 3 time domain symbols of the 9th subframe. Specifically, in one radio frame, the first resource is the first 3 time domain symbols of one subframe. At least one of the time domain symbols, for example, the first resource is one, two, or three time domain symbols in the first three time domain symbols of the fifth subframe, and may be the first three of the zero subframes. One, two or three time domain symbols in the domain symbol may also be one, two or three time domain symbols in the first three time domain symbols of the subframe 9. Certainly, the first resource may also be at least two time domain symbols of the first three time domain symbols of different subframes, for example, the first resource is the first time domain symbol of the subframe 5 and the first subframe of the number 0 subframe. Time domain symbols, for example, the first resource is the first time domain symbol of the 0th subframe and the first time domain symbol of the 9th subframe, for example, the first resource is the first time domain symbol of the 5th subframe. The first time domain symbol of the 0th subframe and the second time domain symbol of the 9th subframe. For the sake of simplicity of the description, other combinations are not listed one by one.

For example, the subframe 0 of the at least one radio frame may be the first subframe in the radio frame, that is, the subframe with the highest absolute time. Other situations in the embodiments of the present invention are similar to this and will not be described again.

Optionally, the occupied time domain symbols of the first resource in different radio frames may be different. For example, in the radio frame 0, the first resource is the first three time domains of the 0th subframe in the radio frame. The symbol and the first three time domain symbols of the subframe No. 5, in the radio frame 1, the first resource is the first three time domain symbols of the 0th subframe in the radio frame, and the first three time slots of the fifth subframe The domain symbol and the first 3 time domain symbols of subframe 9. In the above example, the number of the radio frame has no practical meaning, but only the time domain symbols used to indicate that the first resource is occupied in different radio frames may be different.

Optionally, the nine time domain symbols in the at least one radio frame are the first three time domain symbols of the 0th subframe of each radio frame, the first three time domain symbols of the fifth subframe, and the double radio frame. The first 3 time domain symbols of the 9th subframe.

Optionally, the first signal includes at least one sub-signal, and each sub-signal may be a sequence, where the sequence may be a set of elements consisting of a general complex number; for example, the sub-signal may be a pseudo-random sequence, a Zadoff-Chu sequence, a Gold sequence, a Had code sequence, a Walsh code, an m sequence, an M sequence, or a random sequence, etc., may also be a variant of the above sequence, such as a cyclic shift, a conjugate, a sequence, a product with at least one other sequence, and at least A sequence of other additions or the like, or a combination of the above various modifications, and the like.

Optionally, the at least one sub-signal may be the same or different. The fact that at least one sub-signal is the same means that any two sub-signals are the same. The difference in at least one sub-signal means that at least two sub-signals are different in at least one sub-signal.

Optionally, each sub-signal can be carried on at least one time domain symbol. The number of time domain symbols that the at least one sub-signal is carried may be the same or different. For example, the first signal includes three sub-signals, each of which is carried on one time domain symbol; or the first signal includes two sub-signals, the first sub-signal is carried on one time domain symbol, and the second sub-signal The signal is carried on two time domain symbols.

Optionally, if the first signal is a synchronization signal, each sub-signal may be a Zadoff-Chu sequence, or each sub-signal is a product of a Zadoff-Chu sequence and a complex number.

It should be noted that the product of a Zadoff-Chu sequence and a complex number means that each element in the Zadoff-Chu sequence is multiplied by the complex number, and then a new sequence is obtained, and the new sequence is a sub-signal.

Optionally, the Zadoff-Chu sequence corresponding to each sub-signal is the same. For example, if each sub-signal is a Zadoff-Chu sequence, then each sub-signal is identical. If each sub-signal is a product of a Zadoff-Chu sequence and a complex number, then the Zadoff-Chu sequence used by each sub-signal is the same. Corresponding to each sub-signal In the case where the Zadoff-Chu sequence is the same, the processing complexity of the receiving side, such as the terminal device, can be reduced.

Of course, in the actual application, the Zadoff-Chu sequence corresponding to each sub-signal may also be different, which is not specifically limited in the embodiment of the present invention.

It should be noted that the two Zadoff-Chu sequences are the same, that is, the lengths of the two Zadoff-Chu sequences are the same, and the elements at each corresponding position are all the same. Otherwise, the two Zadoff-Chu sequences are considered to be different.

Optionally, if the first signal is a partial synchronization signal, for example, a partial PSS, the Zadoff-Chu sequence carried on at least one time domain symbol in the first three time domain symbols of the subframe 5 may also be The Zadoff-Chu sequence used for the synchronization signal carried on the last 11 time domain symbols of the subframe 5 may be the same or different. In the case of the same two, the terminal device is convenient to perform unified processing on the new synchronization signal carried by the 14 time domain symbols, thereby reducing complexity.

Optionally, when each sub-signal is a product of a Zadoff-Chu sequence and a complex number, the reliability of the terminal device synchronization process can be ensured because of the cross-correlation of the symbol level scrambling code.

Alternatively, the complex number can be 1 and/or -1. In this case, the complexity of detecting the synchronization signal by the terminal device can be greatly reduced.

Optionally, the length of the Zadoff-Chu sequence is an integer greater than or equal to 11. For example, if the length of the Zadoff-Chu sequence is 11, for example, the 11 elements of the Zadoff-Chu sequence can be respectively mapped to subcarrier 0 to subcarrier 10 corresponding to one time domain symbol. When the length of the Zadoff-Chu sequence is greater than or equal to 11, the reliability of the synchronization process is high.

In the existing academic definitions, the Zadoff-Chu sequence is generally considered to be a sequence that satisfies the following expression:

e ^{-jπun(n+1+2q)/L} , where L is a positive integer representing the length of the sequence; u is a positive integer representing the root index of the sequence; j is the imaginary unit, π is the pi, q is an integer; An integer representing the sequence element number, ranging from 0 to L-1.

Optionally, the Zadoff-Chu sequence has a root index of 5.

Of course, in the actual application, the root index of the Zadoff-Chu sequence can also take other values according to the actual requirements, which is not specifically limited in the embodiment of the present invention.

In one possible example, the Zadoff-Chu sequence satisfies the following formula: e ^{-jπun(n+1)/L} , n=0,1,...,L-1, where the integer u is the Zadoff-Chu sequence The root index, e is a natural constant, j is an imaginary unit, π is a pi, a positive integer L is the length of the Zadoff-Chu sequence, and an integer n is the element number of the Zadoff-Chu sequence.

It should be noted that, in the case that the Zadoff-Chu sequence corresponding to each sub-signal is the same, the values of u and L corresponding to each sub-signal are the same. If the Zadoff-Chu sequence corresponding to each sub-signal is not the same, the values of u and L may be different in the formula.

Optionally, the first signal includes three sub-signals, that is, the number of the at least one sub-signal is three, and the three signals are respectively carried on the first three time-domain symbols of the fifth subframe of the at least one radio frame. In this case, the first signal is, for example, a PSS.

Optionally, the first signal includes three sub-signals respectively carried on the first three time-domain symbols of the subframe 9 of the at least one radio frame. In this case, the first signal is, for example, an SSS.

Optionally, the first signal includes three sub-signals respectively carried on the first three time domain symbols of the 0th subframe of the at least one radio frame. In this case, the first signal is for example MIB or SIB.

Optionally, the complex numbers used by the three sub-signals are (1, 1, 1), (1, 1, -1), (1, -1, 1), (1, -1, -1), ( -1,1,1), (-1,1,-1), (-1,-1,1) or (-1,-1,-1). For example, when the complex number of the three sub-signals is (-1, 1, 1), the sub-signal carried on the first time-domain symbol of the subframe 5 uses a complex number of -1, which is carried at 5 The sub-signal on the second time-domain symbol of the sub-frame uses a complex number of 1, and the sub-signal carried on the third time-domain symbol of the sub-frame 5 uses a complex number of one. In this case, the symbol level scrambling code is in the form of 1 or -1, which is advantageous for reducing the complexity of the terminal device synchronization process. The first, second, and third time-domain symbols of the first three time-domain symbols of the subframe No. 5 mentioned here are arranged in the order of absolute time, that is, the first time-domain symbol is at the second time. Before the domain symbol, the second time domain symbol precedes the third time domain symbol. For example, in a narrowband physical network system, the first time domain symbol of the subframe 5 refers to the number 0 symbol, and the second time domain symbol of the subframe 5 refers to the number 1 symbol. The third time domain symbol of the frame refers to the number 2 symbol. Other situations in the embodiment of the present invention are similar to this and will not be described again.

Optionally, in step 201, the terminal device may determine the first resource according to the configuration information specified by the protocol or the pre-configured configuration information, or may determine the first resource according to the indication information sent by the network side device.

It can be seen from the above description that, by using the solution in the embodiment of the present invention, the first resource can be reasonably utilized to avoid waste of the first resource. Further, if the first signal is part of the synchronization signal, the length of the synchronization signal can be increased, the resources are increased, and the synchronization performance of the narrowband Internet of Things is improved.

Based on the same inventive concept, an embodiment of the present invention further provides an information transmission apparatus, where the information transmission apparatus includes a function for performing network side device behavior in the foregoing method steps shown in FIG. 3 and/or FIG. 4, as shown in FIG. The information transmission device includes a processing unit 301 and a transmission unit 302.

The processing unit 301 is configured to acquire a first signal, and the sending unit 302 is configured to send, by using the first resource, the first signal acquired by the processing unit 301, where the first resource includes at least one radio frame in the narrowband Internet of Things. At least one of the nine time domain symbols, the first three time domain symbols of the fifth subframe, the first three time domain symbols of the zero subframe, and the subframe 9 The first 3 time domain symbols.

Correspondingly, in the embodiment shown in FIG. 5, the physical device corresponding to the processing unit 301 is a processor, and the physical device corresponding to the sending module is a transmitter.

FIG. 6 is an information transmission device according to an embodiment of the present invention, where the information transmission device is configured to perform the function of the terminal device in the foregoing method embodiment, where the device includes: a processing unit 401, configured to determine a first resource; The first resource includes nine time domain symbols of at least one radio frame in the narrowband Internet of Things, and the nine time domain symbols include the first three time domain symbols of the fifth subframe, and the first three subframes of the zero subframe. The first time domain symbol and the first three time domain symbols of the number 9 subframe; the receiving unit 402 is configured to receive the first signal on the first resource determined by the processing unit 401.

Correspondingly, in the embodiment shown in FIG. 6, the physical device corresponding to the processing unit 401 is a processor, and the physical device corresponding to the receiving unit 402 is a receiver.

Optionally, in the foregoing device embodiment, the first signal is a synchronization signal and/or a system message.

Optionally, in the foregoing apparatus embodiment, the synchronization signal is a complete synchronization signal or a partial synchronization signal; and/or

The system message is a complete master information block or a partial master information block.

Optionally, in the foregoing apparatus embodiment, the first signal includes at least one sub-signal, each of the sub-signals is a Zadoff-Chu sequence, or a product of a Zadoff-Chu sequence and a complex number.

Optionally, in the foregoing apparatus embodiment, the Zadoff-Chu sequence corresponding to each of the sub-signals is the same.

Optionally, in the foregoing apparatus embodiment, the length of the Zadoff-Chu sequence is an integer greater than or equal to 11.

Optionally, in the foregoing device embodiment, the Zadoff-Chu sequence satisfies the following formula:

e ^{-jπun(n+1)/L} , n=0,1,...,L-1, where the integer u is the root index of the Zadoff-Chu sequence, e is a natural constant, j is an imaginary unit, π For the pi, a positive integer L is the length of the Zadoff-Chu sequence, and an integer n is the element number of the sequence formed by the complex number.

Optionally, in the foregoing apparatus embodiment, the root index of the Zadoff-Chu sequence is 5.

Optionally, in the foregoing apparatus embodiment, the at least one sub-signal includes three sub-signals, where the three sub-signals are respectively carried on the first three time-domain symbols of the fifth subframe of the at least one radio frame. .

Optionally, in the foregoing apparatus embodiment, the sub-signals carried on the first, second, and third time domain symbols of the subframe No. 5 are respectively used as (1, 1, 1), (1) , -1, 1), (1, -1, -1), (-1, 1, 1), (-1, -1, 1) or (-1, -1, -1).

The various changes and specific examples in the information transmission method in the foregoing embodiments are also applicable to the information transmission apparatus of the present embodiment and the communication apparatus in FIG. 2, and those skilled in the art can use the foregoing detailed description of the information transmission method. The information transmission apparatus in the present embodiment and the implementation method of the communication apparatus in FIG. 2 are clearly known, so that the details of the description will not be described in detail herein.

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

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

Claims

An information transmission method, comprising:

The network side device acquires the first signal;

The network side device sends the first signal on a first resource;

The first resource includes at least one of 9 time domain symbols of at least one radio frame in the narrowband Internet of Things, and the 9 time domain symbols include the first 3 time domain symbols of the 5th subframe. The first 3 time domain symbols of the 0th subframe and the first 3 time domain symbols of the 9th subframe.
The method of claim 1 wherein said first signal comprises at least one of a synchronization signal and a system message.
The method of claim 2 wherein said synchronization signal is a complete synchronization signal or a portion of a synchronization signal; and/or

The system message is a complete master information block or a partial master information block.
The method according to any one of claims 1 to 3, wherein the first signal comprises at least one sub-signal, each of the sub-signals being a Zadoff-Chu sequence, or a Zadoff- The product of the Chu sequence and a complex number.
The method of claim 4 wherein the Zadoff-Chu sequence corresponding to each of said sub-signals is the same.
The method according to claim 4 or 5, wherein the length of the Zadoff-Chu sequence is an integer greater than or equal to 11.
The method according to any one of claims 4 to 6, wherein the Zadoff-Chu sequence satisfies the following formula:

e -jπun(n+1)/L , n=0,1,...,L-1, where the integer u is the root index of the Zadoff-Chu sequence, e is a natural constant, j is an imaginary unit, π For the pi, a positive integer L is the length of the Zadoff-Chu sequence, and an integer n is the element number of the Zadoff-Chu sequence.
The method according to any one of claims 4 to 7, wherein the Zadoff-Chu sequence has a root index of 5.
The method according to any one of claims 4 to 8, wherein the at least one sub-signal comprises three sub-signals, and the three sub-signals are respectively carried in the fifth sub-carrier of the at least one radio frame. The first 3 time domain symbols of the frame.
The method according to claim 9, wherein the sub-signals carried on the first, second, and third time-domain symbols of the subframe 5 of the at least one radio frame are respectively used as (1, 1) , 1), (1, -1, 1), (1, -1, -1), (-1, 1, 1), (-1, -1, 1) or (-1, -1, - 1).
An information transmission method, comprising:

The terminal device determines the first resource, where the first resource includes at least one of 9 time domain symbols of at least one radio frame in the narrowband Internet of Things, and the 9 time domain symbols include subframe 5 The first 3 time domain symbols, the first 3 time domain symbols of the 0th subframe, and the first 3 time domain symbols of the 9th subframe;

The terminal device receives the first signal on the first resource.
The method of claim 11 wherein said first signal comprises at least one sub-signal, each The sub-signal is a Zadoff-Chu sequence, or a product of a Zadoff-Chu sequence and a complex number.
The method according to claim 12, wherein said at least one sub-signal comprises 3 sub-signals respectively carrying the first 3 time-domain symbols of subframe 5 of said at least one radio frame on.
The method according to claim 13, wherein the sub-signals carried on the first, second, and third time-domain symbols of the subframe No. 5 are respectively used as (1, 1, 1), ( 1,-1,1), (1,-1,-1), (-1,1,1), (-1,-1,1) or (-1,-1,-1).
The method according to any one of claims 12 to 14, wherein each of the at least one sub-signals corresponds to a Zadoff-Chu sequence.
The method according to any one of claims 12 to 15, wherein the Zadoff-Chu sequence satisfies the following formula:

e -jπun(n+1)/L , n=0,1,...,L-1, where the integer u is the root index of the Zadoff-Chu sequence, e is a natural constant, j is an imaginary unit, π For the pi, a positive integer L is the length of the Zadoff-Chu sequence, and an integer n is the element number of the Zadoff-Chu sequence.
The method according to any one of claims 12 to 16, wherein the Zadoff-Chu sequence has a root index of 5.
The method according to any one of claims 12 to 17, wherein the length of the Zadoff-Chu sequence is an integer greater than or equal to 11.
An information transmission device, comprising:

a processing unit, configured to acquire a first signal;

a sending unit, configured to send, by using the first resource, the first signal acquired by the processing unit;

The first resource includes at least one of 9 time domain symbols of at least one radio frame in the narrowband Internet of Things, and the 9 time domain symbols include the first 3 time domain symbols of the 5th subframe. The first 3 time domain symbols of the 0th subframe and the first 3 time domain symbols of the 9th subframe.
The apparatus of claim 19, wherein the first signal acquired by the processing unit comprises at least one of a synchronization signal and a system message.
The apparatus according to claim 20, wherein said synchronization signal is a complete synchronization signal or a partial synchronization signal; and/or

The system message is a complete master information block or a partial master information block.
The apparatus according to any one of claims 19 to 21, wherein the first signal acquired by the processing unit comprises at least one sub-signal, each of the sub-signals being a Zadoff-Chu sequence, or The product of a Zadoff-Chu sequence and a complex number.
The apparatus of claim 22 wherein the Zadoff-Chu sequence corresponding to each of said sub-signals is the same.
The apparatus according to claim 22 or 23, wherein the length of the Zadoff-Chu sequence is an integer greater than or equal to 11.
The apparatus according to any one of claims 22 to 24, wherein the Zadoff-Chu sequence satisfies the following formula:

e -jπun(n+1)/L , n=0,1,...,L-1, where the integer u is the root index of the Zadoff-Chu sequence, e is a natural constant, j is an imaginary unit, π For the pi, a positive integer L is the length of the Zadoff-Chu sequence, and an integer n is the element number of the sequence formed by the complex number.
The apparatus according to any one of claims 22 to 25, wherein the Zadoff-Chu sequence has a root index of 5.
The apparatus according to any one of claims 22 to 26, wherein the at least one sub-signal comprises 3 sub-signals, and the 3 sub-signals are respectively carried in the 5th sub-frame of the at least one radio frame. The first 3 time domain symbols of the frame.
The apparatus according to claim 27, wherein the sub-signals carried on the first, second, and third time-domain symbols of the subframe No. 5 are respectively used as (1, 1, 1), ( 1,-1,1), (1,-1,-1), (-1,1,1), (-1,-1,1) or (-1,-1,-1).
A data transmission device, comprising:

a processing unit, configured to determine a first resource, where the first resource includes nine time domain symbols of at least one radio frame in a narrowband Internet of Things, and the nine time domain symbols include the first three subframes of the fifth subframe Time domain symbol, first 3 time domain symbols of subframe 0, and first 3 time domain symbols of subframe 9;

And a receiving unit, configured to receive the first signal on the first resource determined by the processing unit.
The apparatus according to claim 29, wherein said first signal comprises at least one sub-signal, each of said sub-signals being a Zadoff-Chu sequence, or a product of a Zadoff-Chu sequence and a complex number.
The apparatus according to claim 30, wherein said at least one sub-signal comprises three sub-signals respectively carrying the first three time-domain symbols of subframe 5 of said at least one radio frame on.
The apparatus according to claim 31, wherein the sub-signals carried on the first, second, and third time-domain symbols of the subframe number 5 are respectively used as (1, 1, 1), ( 1,-1,1), (1,-1,-1), (-1,1,1), (-1,-1,1) or (-1,-1,-1).
The apparatus according to any one of claims 30 to 32, wherein each of the at least one sub-signals has a same Zadoff-Chu sequence.
The apparatus according to any one of claims 30 to 33, wherein the Zadoff-Chu sequence satisfies the following formula:

e -jπun(n+1)/L , n=0,1,...,L-1, where the integer u is the root index of the Zadoff-Chu sequence, e is a natural constant, j is an imaginary unit, π For the pi, a positive integer L is the length of the Zadoff-Chu sequence, and an integer n is the element number of the Zadoff-Chu sequence.
The apparatus according to any one of claims 30 to 34, wherein the Zadoff-Chu sequence has a root index of 5.
The apparatus according to any one of claims 30 to 35, wherein the length of the Zadoff-Chu sequence is an integer greater than or equal to 11.