CN108809586B

CN108809586B - Information sending method, information receiving method, network side equipment and terminal equipment

Info

Publication number: CN108809586B
Application number: CN201710313803.6A
Authority: CN
Inventors: 吴凯; 沈晓冬; 丁昱
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-05-05
Filing date: 2017-05-05
Publication date: 2021-01-08
Anticipated expiration: 2037-05-05
Also published as: CN108809586A

Abstract

The invention provides a method for sending and receiving information, network side equipment and terminal equipment, wherein the method comprises the following steps: and respectively mapping reference signals on a first OFDM symbol and a second OFDM symbol in each resource group in a synchronization signal resource block, and transmitting all the OFDM symbols in the synchronization signal resource block, wherein the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group represents at least one bit of information. Different information bits are represented by the phase difference between the two OFDM symbol reference signals, so that information is prevented from being carried through a channel, and the transmission performance is improved.

Description

Information sending method, information receiving method, network side equipment and terminal equipment

Technical Field

The present invention relates to wireless communication technologies, and in particular, to a method for sending and receiving information, a network side device, and a terminal device.

Background

In a fifth Generation mobile communication technology (5th-Generation, abbreviated as 5G) system, also referred to as a New Radio (NR) system, in the design of the NR system, the design of a Broadcast Channel is different from that of a Long Term Evolution (LTE) system, a Physical Broadcast Channel-PBCH (Physical Broadcast Channel-PBCH) of the NR system needs to indicate that a terminal device (User Equipment, UE) currently transmits (beam index) in addition to transmitting partial minimum information, and the beam identifier has 128 possible at most, that is, 7-bit information needs to be transmitted.

The current way to transmit the beam id is: the beam identifier is carried in the NR-PBCH and is transmitted by channel coding together with part of the minimum system information carried by the NR-PBCH.

However, this method increases the number of information bits carried by the NR-PBCH transmission, thereby degrading the transmission performance.

Disclosure of Invention

Embodiments of the present invention provide an information sending method, an information receiving method, a network side device, and a terminal device, so as to solve the problem that the transmission performance is reduced due to the increase of the information bit number carried by NR-PBCH transmission in the existing transmission mode of beam identifiers.

In a first aspect, an embodiment of the present invention provides an information sending method, which is applied to a network side device, and the method includes:

mapping reference signals on a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second OFDM symbol in each resource group in a synchronous signal resource block respectively;

sending all OFDM symbols in the synchronous signal resource block;

and the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group represents at least one bit of information.

In a second aspect, an embodiment of the present invention provides an information receiving method, which is applied to a terminal device, and the method includes:

receiving and detecting a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second OFDM symbol in each resource group in a synchronous signal resource block by network side equipment to obtain a reference signal corresponding to the first OFDM symbol and a reference signal corresponding to the second OFDM symbol in each resource group;

performing channel estimation on the reference signals in each resource group to acquire a phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group;

acquiring information sent by the network side equipment according to the phase difference corresponding to each resource group;

wherein a phase difference between the reference signal of the first OFDM symbol and the reference signal corresponding to a second OFDM symbol in each resource group represents at least one bit of the information.

In a third aspect, an embodiment of the present invention provides a network side device, including:

the first processing module is used for mapping reference signals on a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol in each resource group in a synchronous signal resource block respectively;

a sending module, configured to send all OFDM symbols in the synchronization signal resource block;

In a fourth aspect, an embodiment of the present invention provides a terminal device, including:

a receiving module, configured to perform receiving detection on a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol in each resource group in a synchronization signal resource block by a network side device, and obtain a reference signal corresponding to the first OFDM symbol and a reference signal corresponding to the second OFDM symbol in each resource group;

the first processing module is used for performing channel estimation on the reference signals in each resource group to acquire a phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group;

the second processing module is used for acquiring the information sent by the network side equipment according to the phase difference corresponding to each resource group;

In a fifth aspect, an embodiment of the present invention provides a network side device, including:

the information processing system comprises a memory, a processor, a transmitter and a computer program, wherein the computer program is stored in the memory, and the processor runs the computer program to execute the information sending method provided by any implementation mode of the first aspect.

In a sixth aspect, an embodiment of the present invention provides a terminal device, including:

a memory, a processor and a computer program, the computer program being stored in the memory, the processor running the computer program to perform the method of receiving information as provided in any of the implementations of the second aspect.

In the above embodiments of the network side device and the terminal device, it should be understood that the memory may also be integrated inside the processor.

In a seventh aspect, an embodiment of the present invention provides a storage medium, including: a readable storage medium and a computer program for implementing the method of transmitting information provided by the first aspect.

In an eighth aspect, an embodiment of the present invention provides a storage medium, including: a readable storage medium and a computer program for implementing the method of receiving information provided by the second aspect.

In a ninth aspect, an embodiment of the present invention provides a program product, which includes a computer program (i.e., execution instructions), and the computer program is stored in a readable storage medium. The computer program may be read from a readable storage medium by at least one processor of the network side device, and the computer program may be executed by the at least one processor to cause the network side device to implement the information transmission method provided in the various embodiments of the first aspect.

In a tenth aspect, an embodiment of the present invention provides a program product, which includes a computer program (i.e., execution instructions), and the computer program is stored in a readable storage medium. The computer program may be read from a readable storage medium by at least one processor of the terminal device, and execution of the computer program by the at least one processor causes the terminal device to implement the method of receiving information provided by the various embodiments of the second aspect described above.

In this way, in the embodiment of the present invention, reference signals are respectively mapped on the first OFDM symbol and the second OFDM symbol in each resource group in the synchronization signal resource block, and all OFDM symbols in the synchronization signal resource block are transmitted, where a phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group represents information of at least one bit. The terminal equipment obtains the phase difference between the reference signals on the two symbols through channel estimation to obtain information, does not need to additionally carry through a channel, and expresses different information bits through the phase difference between the two OFDM symbols, thereby avoiding carrying the information through the channel and improving the transmission performance.

Drawings

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

Fig. 1 is a schematic diagram of a system architecture of a method for sending and a method for receiving information according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method of sending information according to an embodiment of the invention;

fig. 3 is a flowchart of a method for receiving information according to another embodiment of the present invention;

FIG. 4 is a diagram illustrating reference signal mapping for a resource group according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating reference signal mapping for a resource group according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 7 is a second schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 8 is a third schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 9 is a fourth schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a terminal device according to another embodiment of the present invention;

fig. 12 is a fifth schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this invention, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The information sending method and the information receiving method provided by the invention can be applied to systems such as Long Term Evolution (LTE), 5G systems (also called New Radio (NR) systems), other newly designed OFDM wireless access systems and the like to transmit information.

Fig. 1 is a schematic diagram of a system architecture of a method for sending and a method for receiving information according to an embodiment of the present invention. As shown in fig. 1, the network side device involved in the scheme may be a Base Transceiver Station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (evolved Node B, eNB, or eNodeB) in LTE, a relay Station, an Access point, or a Base Station in a future 5G network, and the like, which is not limited herein.

The terminal device may be a wireless terminal or a wired terminal, and a wireless terminal may refer to a device that provides voice and/or other traffic data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a Terminal Device (User Device or User Equipment), which are not limited herein.

The scheme of transmission beam identification provided at present is: the beam identity is carried in the NR-PBCH and transmitted by channel coding with a portion of the minimum system information carried by the NR-PBCH. However, this method increases the number of information bits carried by the NR-PBCH transmission, thereby degrading the transmission performance. Meanwhile, because the beam identifications of the consecutive multiple transmissions of the NR-PBCH are different and are channel-coded together with a part of the minimum system information, the terminal device at the receiving end cannot combine the reception of the part of the minimum system information of the multiple transmissions of the NR-PBCH, or the complexity of the combination is improved and the reception performance is reduced.

Based on the existing problems, the invention provides an information sending method and an information receiving method, which can effectively improve the transmission performance and facilitate the terminal equipment at the receiving end to carry out merging processing on part of minimum system information transmitted by PBCH.

Before describing specific embodiments of the present invention, the terminology involved in the present invention is explained:

the reference signal of the NR-PBCH, also referred to as a reference signal, is mainly used for demodulation of the NR-PBCH, and is mapped on Orthogonal Frequency Division Multiplexing (OFDM) symbol resources of a synchronization signal resource block (SS block) of the NR system.

An NR SS block consists of NR-Primary Synchronization Signal (PSS), NR-Secondary Synchronization Signal (SSs), NR-PBCH, and is a continuous OFDM symbol in time.

One specific definition of NR SS block is: four OFDM symbols arranged time-domain consecutively (2 symbols NR-PBCH, 1 symbol NR-PSS and 1 symbol NR-SSS); the NR-PBCH bandwidth is 4.32M and occupies 288 subcarriers; the NR-PSS and NR-SSS bandwidths are 2.16M, and occupy 127 subcarriers.

NR SS block use: and acquiring timing through NR-PSS in the NR SS block, and acquiring a cell ID and minimum system information through an NR-PBCH part through the NR-SSS.

In order to improve coverage of the NR SS block, the NR SS block may perform multiple transmissions, and the receiving end may combine information transmitted by the NR SS block multiple times.

In an NR SS block, the bandwidth of NR-PSS and NR-SSS are different from the bandwidth of NR-PBCH.

The following describes the technical solution of the present invention and how to solve the above technical problems with specific examples. The following embodiments may be combined with each other and may not be described in detail in some embodiments for the same or similar concepts or processes. Embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 2 is a flowchart of a method for sending information according to an embodiment of the present invention. As shown in fig. 2, the method is applied to a network side device, and includes the steps of:

s101: and mapping the reference signals on the first OFDM symbol and the second OFDM symbol in each resource group in the synchronous signal resource block respectively.

Specifically, before this step, the network side device may divide the synchronization signal resource block into at least two resource groups (the group is a group in the frequency domain), where each resource group includes at least one group of 12 consecutive subcarriers.

The implication is that the number of subcarriers in each resource group is an integer multiple of 12, and all subcarriers within a resource group may be contiguous. The set of resources may also be made up of several small groups of 12 consecutive subcarriers. For example: each resource group has 36 subcarriers, and the subcarriers may be formed by three groups of consecutive 12 subcarriers, i.e., 1 to 36, or 1 to 12, 24 to 36, and 48 to 60, which is not limited in this embodiment.

After grouping the synchronization signal resource blocks, different reference signals may be transmitted in a resource group, that is, the transmitted reference signals may also be grouped and mapped to symbols in different resource groups for transmission.

In the above steps, as can be seen from the foregoing background description, four OFDM symbols transmitting PSS, SSS and PBCH are included in each resource group. And the network side equipment respectively maps two groups of reference signals to be sent on preset resource particles of a first OFDM symbol and preset resource particles of a second OFDM symbol. The phase difference between the reference signal on the first OFDM symbol and the reference signal on the second OFDM symbol in this scheme may carry one bit or multiple bits of information. In particular, it may be predefined that different phase differences represent different bit values.

That is, when the network side device needs to send some information to the terminal device, it does not need to carry over channel resources, and can be carried over directly by the phase difference between different symbols of the reference signal. Multiple resource groups may carry multiple bits of information simultaneously.

The network side equipment carries information through the phase difference between two symbols in each resource group, and the mode can avoid carrying excessive information in a channel, reduce the information bit number carried by NR-PBCH resources, reduce the code rate of minimum system information channel coding, reduce the receiving processing complexity of terminal equipment, save transmission resources and improve the transmission performance.

In the specific implementation of this step, at least the following two implementation manners are included:

in a first implementation manner, at least one of two groups of reference signals is subjected to phase rotation processing; mapping two groups of reference signals after phase rotation processing on preset Resource Elements (RE) of the first OFDM symbol and preset RE of a second OFDM symbol respectively; one of the two groups of reference signals is a reference signal to be mapped to a first OFDM symbol, and the other group is a reference signal to be mapped to a second OFDM symbol.

The method includes that when network side equipment maps two groups of reference signals in a resource group, at least one group of reference signals is subjected to phase rotation processing, and then two groups of reference signals after phase rotation are mapped on preset resource particles of a first OFDM symbol and preset resource particles of a second OFDM symbol respectively. The specific rotation is determined according to the bit value of the information to be transmitted.

In a second implementation manner, two groups of reference signals to be mapped are mapped on a preset RE of the first OFDM symbol and a preset RE of the second OFDM symbol respectively; and carrying out phase rotation processing on the first OFDM symbol and/or the second OFDM symbol.

The method includes that after two groups of reference signals to be mapped are directly mapped on preset resource particles of a first OFDM symbol and preset resource particles of a second OFDM symbol respectively by network side equipment, phase rotation processing is carried out on the mapped first OFDM symbol and second OFDM symbol, and therefore the phase difference between the two groups of reference signals corresponds to the bit value of information to be transmitted.

Optionally, the first OFDM symbol is a symbol for transmitting a secondary synchronization signal, and the second OFDM symbol is any one symbol for transmitting a reference signal of a PBCH.

Optionally, the first OFDM symbol and the second OFDM symbol are both symbols for transmitting PBCH.

The first OFDM symbol and the second OFDM symbol may both be symbols for transmitting PBCH, or one of the symbols may be a symbol for transmitting PBCH, and the other is a secondary synchronization signal, which is not limited in this scheme.

S102: and transmitting all OFDM symbols in the synchronous signal resource block.

In this step, after mapping the PSS, SSS, PBCH, and reference signal with transmission on the corresponding resources, the network side device sends the OFDM symbols in the synchronization signal resource block.

Therefore, when receiving and detecting, the terminal device can obtain the required information according to the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group.

The network side equipment maps the reference signals on the preset resource particles on the first OFDM symbol and the second OFDM symbol in each resource group, and transmits all the OFDM symbols in the synchronous signal resource block after phase rotation, and the information to be transmitted to the terminal equipment by the network side equipment is carried by the phase difference between the reference signals without occupying channel resources.

In the method for sending information provided by this embodiment, the network side device maps two groups of reference signals on the first OFDM symbol and the second OFDM symbol in each resource group, where a phase difference between the two groups of reference signals indicates a certain information bit, so that the terminal device can obtain the information bit according to the phase difference between the two groups of reference signals after channel estimation, and the phase difference of the reference signals is used to carry information, thereby reducing the complexity of PBCH sending and receiving, and effectively improving transmission performance.

Fig. 3 is a flowchart of a method for receiving information according to another embodiment of the present invention, as shown in fig. 3, the method is applied to a terminal device, and includes the following specific steps:

s201: and performing receiving detection on the first OFDM symbol and the second OFDM symbol in each resource group in the synchronous signal resource block by the network side equipment, and acquiring a reference signal corresponding to the first OFDM symbol and a reference signal corresponding to the second OFDM symbol in each resource group.

Specifically, before this step, the grouping mechanism of the resources by the terminal device and the network side device is the same, that is, the terminal device also divides the synchronization signal resource block into at least two resource groups; wherein, each resource group comprises at least one group of continuous 12 subcarriers. The specific grouping mode is consistent with the network side equipment.

In this step, the terminal device performs reception detection on a resource in a predetermined synchronization signal resource block, in this scheme, the terminal device may also detect reference signals mapped on a first OFDM symbol and a second OFDM symbol of each resource group while acquiring the PSS, the SSS, and the PBCH, where each resource group corresponds to two sets of reference signals.

In a specific receiving detection process, the terminal device obtains one group of reference signals from the predefined resource particles on the first OFDM symbol, and obtains another group of reference signals from the predefined resource particles on the second OFDM symbol.

The phase difference between the two groups of reference signals corresponding to each resource group acquired by the terminal device in this step carries information to be transmitted by the network side device, and the terminal device does not need to estimate and demodulate other channels additionally, thereby reducing the complexity of receiving processing.

S202: and performing channel estimation on the reference signals in each resource group, and acquiring a phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group.

S203: and acquiring the information sent by the network side equipment according to the phase difference corresponding to each resource group.

In the above step, after acquiring the two groups of reference signals in each resource group, the terminal device performs channel estimation to acquire a phase difference between the two groups of reference signals in each resource group. And then, the terminal equipment determines the information bits carried by each resource group according to the corresponding relation between the predefined phase difference and the information bits. The plurality of resource groups can obtain a plurality of information bits, so that the information transmitted by the network side equipment is obtained.

The terminal equipment can acquire a plurality of bits carried by the network side through the phase difference between the two groups of reference signals corresponding to each resource group, namely, the information sent by the network side equipment is acquired, the terminal equipment does not need to perform extra decoding processing, the complexity of multiple NR-PBCH receiving combination is reduced, the receiving algorithm is simple, and the receiving performance is improved.

Similarly, on the terminal device side, the first OFDM symbol is a symbol for transmitting a secondary synchronization signal, and the second OFDM symbol is any one of symbols for transmitting a reference signal of a PBCH.

Optionally, the first OFDM symbol and the second OFDM symbol are both symbols for transmitting a reference signal of PBCH.

In the information receiving method provided by this embodiment, the terminal device performs receiving detection on the first OFDM symbol and the second OFDM symbol in each resource group on the network side device, obtains two groups of reference signals corresponding to each resource group, and then obtains information bits by using a phase difference between the two groups of reference signals, and uses the phase difference of the reference signals to carry information, thereby reducing complexity of PBCH sending and receiving and effectively improving transmission performance.

In the above two embodiments, it should be understood that the phase difference between the two sets of reference signals in each resource group may carry one bit, and may also carry two or more bits. Meanwhile, the specific value of the phase difference can be configured according to the actual situation, and the scheme is not limited.

For example, when the phase difference between two sets of reference signals in each resource group represents one bit:

when the phase difference between the two groups of reference signals is 0, the phase difference represents the information bit 0; when the phase difference between the two reference signals is pi, the phase difference represents information bit 1.

Or when the phase difference between the two groups of reference signals is pi, the phase difference represents the information bit 0; when the phase difference between the two reference signals is 0, the phase difference represents information bit 1.

When the phase difference between the two sets of reference signals in each resource group represents two bits:

the phase difference between the two groups of reference signals belongs to the set {0, pi/2, pi 3, pi/2 }, and the information bits represented by the phase difference belong to the set {00, 01, 11, 10 }; wherein the phase difference corresponds to the information bits one to one.

For example: when the phase difference between the two groups of reference signals is 0, the phase difference represents the information bit 00; when the phase difference between the two groups of reference signals is pi/2, the phase difference represents information bit 01; when the phase difference between the two sets of reference signals is pi, the phase difference represents bit 11; the phase difference between the two sets of reference signals is 3 pi/2, which phase difference represents the information bit 10.

Alternatively, when the phase difference between the two sets of reference signals is 0, the phase difference may indicate any one of information bits 01, 10, and 11, and when the phase difference is another value, the phase difference may indicate another bit.

According to the scheme, when the synchronous signal resource blocks are divided into eight groups, each resource group carries one bit of information, and 8 bits of information can be transmitted in total; each resource group carries two bits of information, and a total of 16 bits of information can be transmitted.

The information sending method and the information receiving method provided by the invention can be used for at least transmitting at least one of the following information:

the system comprises beam identification information, partial beam identification information, TRP (transmission reception point) identification information, a PBCH merging indication signal, a system frame number, an extended cell identification, time-frequency position information of a common search space, idle reservation information, system bandwidth information, synchronous signal burst group period indication information, a transmission measurement period, a transmission measurement duration, a Physical Hybrid automatic repeat request Indicator Channel (PHICH), antenna configuration information, check information and cell independent access indication information.

In accordance with the above description of the embodiments, the following describes several specific embodiments of a method for transmitting and receiving information provided by the present invention.

In a specific implementation of the scheme, the network side device may configure a function of turning on or off the phase rotation of the NR-PBCH reference signal, and the network side device configures the phase rotation of the reference signal as 0 and regards the phase rotation as turning off the pilot phase rotation, and at this time, a certain combination of bit information sequences carried by the phase rotation, for example, a full 0 sequence or a full 1 sequence, may be predefined, and implicitly indicates that the phase rotation function is turned off. When the terminal device side detects the combination of the bit sequences carried by the NR-PBCH reference signal phase rotations, it can be considered that no phase rotation is introduced by the network side. If the network side device turns on the NR-PBCH reference signal phase rotation function, the transmission of information may be performed according to the following implementation.

For example, mapping the NR-PBCH reference signal on 2 OFDM symbols of 4 OFDM symbols in the NR SS block. The grouping condition of the NR SS block is as follows: and dividing into 8 resource groups, wherein each resource group occupies 36 continuous subcarriers, or 3 groups of 12 continuous subcarriers.

Fig. 4 is a schematic diagram of reference signal mapping for one resource group according to an example of the present invention, as shown in fig. 4, one of OFDM symbols for mapping NR-PBCH reference signals in the resource group is a symbol for transmitting SSS, and the other is a symbol for transmitting PBCH, and phase rotation is introduced for the NR-PBCH reference signals on one of the OFDM symbols. Mapping reference signals of the NR-PBCH on OFDM symbols for transmitting the NR-SSS, wherein the phase rotation is not introduced on the reference signal symbols, namely the rotation value is 0; the NR-PBCH reference signals are mapped on one of the two OFDM symbols of the NR-PBCH, with phase rotation introduced on these reference signal symbols. Then there may be the following specific carrying modes:

first, the phase rotation value (i.e., phase difference) is 0 or π. Where a phase rotation of 0 represents a transmitted bit 0/1 and a phase rotation of π represents a transmitted bit 1/0. The scheme transmits 1 bit information in each NR SS block resource group, and 8 resource groups transmit 8 bit information.

Second, the phase rotation value (i.e., phase difference) is 0, π/2, π, 3 π/2. Where a phase rotation of 0 represents a transmission bit 00; the phase rotation of π/2 represents the transmission of a bit of 01; the phase rotation pi represents the transmission bit 11; a phase rotation of 3/2 indicates that bit 10 is transmitted. The scheme transmits 2-bit information in each NR SS block resource group, and 8 resource groups transmit 16-bit information.

Fig. 5 is a schematic diagram of reference signal mapping for a resource group according to another example of the present invention, and as shown in fig. 5, phase rotation is introduced on part or all of the NR-PBCH reference signals mapped on two OFDM symbols of the NR-PBCH. Then at least the following implementations are included:

first, mapping NR-PBCH reference signals on two OFDM symbols of the NR-PBCH introduces no phase rotation on the reference signal symbols mapped on one of the OFDM symbols and phase rotation on the reference signal symbols mapped on the other OFDM symbol, as shown in fig. 5. The phase rotation value is 0 or pi. Where a phase rotation of 0 represents a transmitted bit 0/1 and a phase rotation of π represents a transmitted bit 1/0. The scheme transmits 1 bit information in each NR SS block resource group, and 8 resource groups transmit 8 bit information.

Second, mapping NR-PBCH reference signals on two OFDM symbols of the NR-PBCH introduces no phase rotation on the reference signal symbols mapped on one OFDM symbol and phase rotation on the reference signal symbols mapped on the other OFDM symbol, as shown in fig. 5. The phase rotation values are 0, pi/2, pi, 3 pi/2. Where a phase rotation of 0 represents a transmitted bit of 00, a phase rotation of pi/2 represents a transmitted bit of 01, a phase rotation of pi represents a transmitted bit of 11, and a phase rotation of 3/2 represents a transmitted bit of 10. The scheme transmits 2-bit information in each NR SS block resource group, and 8 resource groups transmit 16-bit information.

In a specific implementation manner of the foregoing embodiment, the network side device sends all OFDM symbols in the synchronization signal resource block, which may specifically be implemented as: mapping the PBCH in each resource group and the reference signal of the PBCH to a transmitting unit of an antenna for transmitting; and the reference signals of the PBCH and the PBCH are mapped to the transmitting units of the antennas through preset precoding vectors.

For example, the transmitted NR-PBCH and NR-PBCH reference signals are mapped to antenna transmission units using one precoding vector for 8 resource groups. The precoding vector within each resource packet is cyclically selected from a set of precoding codebooks, as shown in table-1, which gives a set of precoding vectors mapped onto 2 antenna transmission units. The 8 resource groups may be mapped to the 2-antenna transmitting units using precoding vectors corresponding to codebook identifiers of 0, 1, 2, 3, 0, 1, 2, and 3, respectively.

TABLE-1 precoding vector set

The 2 OFDM symbols mapping the NR-PBCH reference signals within each resource group introduce a phase rotation for the NR-PBCH reference signal on one of the OFDM symbols, as shown in fig. 4 and 5. Similar to the two previous examples, the phase rotation value is 0 or π. Where a phase rotation of 0 indicates a transmission bit of 0 and a phase rotation of pi indicates a transmission bit of 1. The scheme transmits 1-bit information within each NR SS block resource group, 1-bit information per phase rotation value, and 8-bit information per 8 resource group.

Alternatively, the phase rotation value is 0, π/2, π, 3 π/2. Where a phase rotation of 0 indicates a transmission bit of 00, a phase rotation of pi/2 indicates a transmission bit of 01, a phase rotation of pi indicates a transmission bit of 11, and a phase rotation of 3 pi/2 indicates a transmission bit of 10. The scheme transmits 2-bit information in each NR SS block resource group, and 8 resource groups transmit 16-bit information.

Based on all the above implementation manners, it can be known that the network side device can perform information transmission through the phase difference between the NR-PBCH reference signals in the resource group, and the transmittable information in this manner in practical applications includes, but is not limited to, beam identification information, TRP identification information, or other information. A variety of combinations of information may be transmitted. Several carrying modes are exemplified below:

(1) NR SS block, where 7 bits convey beam identification information.

(2) And information carried by the reference signal of the NR-PBCH in the NR SS block, wherein 7 bits transmit beam identification information, and the other 1 bit is a parity check bit of the 7-bit beam identification information.

(3) And information carried by the reference signal of the NR-PBCH in the NR SS block, wherein 1 bit is merging indication information which indicates whether the information of the current transmission of the NR-PBCH in the NR SS block is the same or not, and if the information is the same, a receiving end can carry out multiple times of NR-PBCH receiving merging.

(4) The information carried by the reference signal of the NR-PBCH in the NR SS block is coded information, for example, a bit sequence output after coding (parity check coding, CRC check coding, polar coding, tail-biting convolutional coding, repetition coding, padding bits, etc.) such as beam identification information, TRP identification information, merging indication information, etc.

(5) Information carried by the reference signal of the NR-PBCH in the NR SS block for transmission of the partial SFN or the extended SFN.

(6) And information carried by the reference signal of the NR-PBCH in the NR SS block is used for transmitting the extended Cell ID and is used for an ultra-dense networking or mMTC scene.

(7) And information carried by the reference signal of the NR-PBCH in the NR SS block is used for transmitting the time-frequency position information of the common search space.

(8) Information carried by the reference signal of the NR-PBCH in the NR SS block is used for transmitting idle reservation information for forward compatibility.

(9) And information carried by the reference signal of the NR-PBCH in the NR SS block is used for transmitting system bandwidth information.

(10) And information carried by the reference signal of the NR-PBCH in the NR SS block is used for transmitting the NR-SS burst set period indication information.

(11) Information carried by the reference signal of the NR-PBCH in the NR SS block for transmitting measurement period or duration information.

(12) And information carried by the reference signal of the NR-PBCH in the NR SS block is used for transmitting the PHICH.

(13) And information carried by the reference signal of the NR-PBCH in the NR SS block is used for transmitting the antenna configuration information of the g-NB.

(14) And information carried by the reference signal of the NR-PBCH in the NR SS block is used for transmitting indication information of whether the cell can be accessed independently (NSA/SA).

(15) Information carried by the reference signal of the NR-PBCH in the NR SS block, with or without a CRC Mask, is used to transmit a combination of the above information.

In the above embodiments, the set of phase rotation values may include different phase rotation values, and the different phase rotation values may correspond to other transmitted bit information.

Based on the various implementation manners, the method for sending and receiving information provided by the invention realizes the transmission of the information through the signal difference between the reference signals of the PBCH, reduces the information bit number carried by the NR-PBCH resource, reduces the code rate of the minimum system information channel coding, and improves the performance of the minimum system information transmission of the NR-PBCH part. Meanwhile, the complexity of multiple NR-PBCH receiving combination can be reduced, the receiving algorithm is simple, and the receiving performance is improved.

Fig. 6 is a schematic structural diagram of a network-side device according to an embodiment of the present invention; as shown in fig. 6, the network-side device includes:

a first processing module 001, configured to map reference signals on a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol in each resource group in a synchronization signal resource block, respectively;

a sending module 002, configured to send all OFDM symbols in the synchronization signal resource block;

The network side device provided in this embodiment is configured to implement the technical solutions in any of the foregoing embodiments, and the implementation principle and technical effects are similar, and different information bits are represented by a phase difference between two OFDM symbols, so that information is prevented from being carried by a channel, and transmission performance is improved.

Fig. 7 is a second schematic structural diagram of a network-side device according to an embodiment of the present invention; as shown in fig. 7, on the basis of the foregoing embodiment, the network-side device further includes:

a second processing module 003, configured to divide the synchronization signal resource block into at least two resource groups;

wherein, each resource group comprises at least one group of continuous 12 subcarriers.

Fig. 8 is a third schematic structural diagram of a network-side device according to an embodiment of the present invention; as shown in fig. 8, on the basis of the foregoing embodiment, the first processing module 001 of the network side device includes:

a first phase rotation submodule 0011, configured to perform phase rotation processing on at least one of the two groups of reference signals;

a first mapping sub-module 0012, configured to map two sets of reference signals after phase rotation processing on preset resource elements RE of the first OFDM symbol and preset RE of the second OFDM symbol, respectively;

one of the two groups of reference signals is a reference signal to be mapped to a first OFDM symbol, and the other group is a reference signal to be mapped to a second OFDM symbol.

Fig. 9 is a fourth schematic structural diagram of a network-side device according to an embodiment of the present invention; as shown in fig. 9, on the basis of the foregoing embodiment, the first processing module 001 of the network side device includes:

a second mapping submodule 0013, configured to map two groups of reference signals to be mapped on a preset RE of the first OFDM symbol and a preset RE of the second OFDM symbol, respectively;

a second phase rotation submodule 0014 is configured to perform phase rotation processing on the first OFDM symbol and/or the second OFDM symbol.

Optionally, the sending module is specifically configured to map the PBCH and the reference signal of the PBCH in each resource group to a sending unit of an antenna for sending;

and the reference signals of the PBCH and the PBCH are mapped to the transmitting units of the antennas through preset precoding vectors.

Optionally, when the phase difference between the two groups of reference signals is 0, the phase difference represents an information bit 0; when the phase difference between the two groups of reference signals is pi, the phase difference represents an information bit 1;

alternatively, the first and second electrodes may be,

when the phase difference between the two groups of reference signals is pi, the phase difference represents an information bit 0; when the phase difference between the two sets of reference signals is 0, the phase difference represents information bit 1.

Optionally, the phase difference between the two groups of reference signals belongs to a set {0, pi/2, pi 3, pi/2 }, and the information bits represented by the phase difference belong to a set {00, 01, 11, 10 }; wherein the phase difference corresponds to the information bits one to one.

Optionally, the at least one information bit includes at least one of:

the method comprises the steps of beam identification information, partial beam identification information, TRP (transmission and reception node) identification information, PBCH (physical broadcast channel) merging indication signals, system frame numbers, extended cell identifications, time-frequency position information of a public search space, idle reservation information, system bandwidth information, synchronous signal burst group period indication information, transmission measurement periods, transmission measurement duration, a physical hybrid automatic repeat indicator channel (PHICH), antenna configuration information, check information and cell independent access indication information.

The network side device provided in any of the embodiments above implements information transmission by using a signal difference between reference signals of the PBCH, reduces the number of information bits carried by the NR-PBCH resource, reduces a code rate of minimum system information channel coding, and improves performance of minimum system information transmission of the NR-PBCH portion. Meanwhile, the complexity of multiple NR-PBCH receiving combination can be reduced, the receiving algorithm is simple, and the receiving performance is improved.

Fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention; as shown in fig. 10, the terminal device includes:

a receiving module 111, configured to perform receiving detection on a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol in each resource group in a synchronization signal resource block by a network side device, and obtain a reference signal corresponding to the first OFDM symbol and a reference signal corresponding to the second OFDM symbol in each resource group;

a third processing module 112, configured to perform channel estimation on the reference signals in each resource group, and obtain a phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group;

a fourth processing module 113, configured to obtain information sent by the network-side device according to the phase difference corresponding to each resource group;

The terminal device provided in this embodiment is configured to execute the technical solution in any of the foregoing method embodiments, and the implementation principle and technical effect of the terminal device are similar, where the terminal device performs receiving detection on a first OFDM symbol and a second OFDM symbol in each resource group on a network-side device, obtains two groups of reference signals corresponding to each resource group, and then obtains information bits by using a phase difference between the two groups of reference signals, and uses the information carried by the phase difference of the reference signals to reduce complexity of PBCH sending and receiving, thereby effectively improving transmission performance.

Fig. 11 is a schematic structural diagram of a terminal device according to another embodiment of the present invention; as shown in fig. 11, the terminal device further includes:

a fifth processing module 114, configured to divide the synchronization signal resource block into at least two resource groups;

Optionally, when a phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol is 0, the phase difference represents an information bit 0; when the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol is pi, the phase difference represents information bit 1;

alternatively, the first and second electrodes may be,

when the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol is pi, the phase difference represents an information bit 0; and when the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol is 0, the phase difference represents information bit 1.

Optionally, a phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol belongs to a set {0, pi/2, pi 3, pi/2 }, and information bits represented by the phase difference belong to a set {00, 01, 11, 10 }; wherein the phase difference corresponds to the information bits one to one.

Optionally, the information includes at least one of:

Any of the embodiments described above provides a terminal device, configured to execute the technical solution of any of the method embodiments described above, and the implementation principle and the technical effect are similar, which are not described herein again.

It should be noted that the division of each module of the network side device and the terminal device is only a division of a logical function, and all or part of the actual implementation may be integrated on one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the determining module may be a processing element separately set up, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the determining module is called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

Fig. 12 is a fifth schematic structural diagram of a network-side device according to an embodiment of the present invention. The details of the information sending method in any of the foregoing embodiments can be realized, and the same effect can be achieved. As shown in fig. 12, the network-side device includes: a processor 121, a transceiver 124, a memory 122, a user interface 123, and a bus interface, wherein:

the processor 2601 is configured to read the program stored in the memory 2603 and execute the following processes:

sending all OFDM symbols in the synchronous signal resource block;

In fig. 12, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 121 and various circuits of memory represented by memory 122 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 124 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 123 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 121 is responsible for managing the bus architecture and general processing, and the memory 122 may store data used by the processor 2601 in performing operations.

Specifically, the processor 121 is further configured to divide the synchronization signal resource block into at least two resource groups;

Optionally, the processor 121 is specifically configured to:

performing phase rotation processing on at least one of the two groups of reference signals;

mapping two groups of reference signals after phase rotation processing on preset Resource Elements (RE) of the first OFDM symbol and preset RE of a second OFDM symbol respectively;

Optionally, the processor 121 is specifically configured to:

mapping two groups of reference signals to be mapped on preset RE of the first OFDM symbol and preset RE of the second OFDM symbol respectively;

and carrying out phase rotation processing on the first OFDM symbol and/or the second OFDM symbol.

Optionally, the sending all OFDM symbols in the synchronization signal resource block includes:

mapping the PBCH in each resource group and the reference signal of the PBCH to a transmitting unit of an antenna for transmitting;

Optionally, when the phase difference between the two groups of reference signals is 0, the phase difference represents an information bit 0; when the phase difference between the two reference signals is pi, the phase difference represents an information bit 1;

alternatively, the first and second electrodes may be,

when the phase difference between the two groups of reference signals is pi, the phase difference represents an information bit 0; when the phase difference between the two reference signals is 0, the phase difference represents information bit 1.

Optionally, the at least one information bit includes at least one of:

The network side equipment respectively maps reference signals on a first OFDM symbol and a second OFDM symbol in each resource group in a synchronization signal resource block, and transmits all the OFDM symbols in the synchronization signal resource block, wherein the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group represents at least one bit of information. The terminal equipment obtains the phase difference between the reference signals on the two symbols through channel estimation to obtain information, does not need to additionally carry through a channel, and expresses different information bits through the phase difference between the two OFDM symbols, thereby avoiding carrying the information through the channel and improving the transmission performance.

Fig. 13 is a schematic structural diagram of a terminal device according to another embodiment of the present invention. As shown in fig. 13, the terminal device includes: a processor 131, a memory 132, a network interface 133, and a user interface 134.

The various components described above in the terminal equipment are coupled by a bus system 135. It will be appreciated that the bus system 135 is used to enable communications among the components. The bus system 135 may include a power bus, a control bus, and a status signal bus in addition to the data lines. For clarity of illustration, however, the various buses are labeled as the bus system 135 in FIG. 13.

Alternatively, part or all of the above components may be implemented by embedding a Field Programmable Gate Array (FPGA) on a chip of the terminal. And they may be implemented separately or integrated together.

The user interface 1304 is used for connecting peripheral devices or interface circuits connected with the peripheral devices, respectively. May include interfaces for devices such as a display, keyboard, or pointing device, such as a mouse, trackball (trackball), touch pad, or touch screen.

The processor 131 here may be a general-purpose processor, such as a CPU, and may also be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. The storage element may be a single storage device or may be a collective term for a plurality of storage elements.

The memory 132 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a Read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (staticlam, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DoubleDataRateSDRAM, ddr SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM), and direct memory bus random access memory (DRRAM). The memory 132 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Optionally, the memory 132 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 1321 and application programs 1322.

The operating system 1321 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is configured to implement various basic services and process hardware-based tasks.

The application programs 1322 include various application programs such as a media player (MediaPlayer), a Browser (Browser), and the like, for implementing various application services. Programs that implement methods in accordance with embodiments of the invention may also be included within application 1322.

Specifically, the processor 131 calls a program in the memory 132 to execute the aforementioned information receiving method, which includes: receiving and detecting a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second OFDM symbol in each resource group in a synchronous signal resource block by network side equipment to obtain a reference signal corresponding to the first OFDM symbol and a reference signal corresponding to the second OFDM symbol in each resource group;

Optionally, the processor 131 is further configured to:

dividing the synchronization signal resource blocks into at least two resource groups;

alternatively, the first and second electrodes may be,

Optionally, the information includes at least one of:

In the above scheme, the terminal device performs reception detection on the first OFDM symbol and the second OFDM symbol in each resource group on the network side device, acquires two groups of reference signals corresponding to each resource group, and then uses the information bits acquired by the phase difference between the two groups of reference signals to carry information by using the phase difference of the reference signals, thereby reducing the complexity of PBCH transmission and reception and effectively improving transmission performance.

In addition, the present invention also provides a network side device, including: a memory, a processor, a transmitter, and a computer program, the computer program being stored in the memory, the processor running the computer program to perform a method of transmitting information.

The present invention also provides a terminal device, including: a memory, a processor and a computer program, the computer program being stored in the memory, the processor running the computer program to perform a method of receiving information.

The present invention also provides a storage medium comprising: a readable storage medium and a computer program for implementing the method of receiving information.

The present invention also provides a program product comprising a computer program (i.e., executing instructions) stored in a readable storage medium. The computer program may be read from a readable storage medium by at least one processor of the network-side device, and the computer program may be executed by the at least one processor to cause the network-side device to implement the method for transmitting information.

The present invention also provides a program product comprising a computer program (i.e., executing instructions) stored in a readable storage medium. The computer program can be read from a readable storage medium by at least one processor of the terminal device, and execution of the computer program by the at least one processor causes the terminal device to implement the above-described information receiving method.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An information sending method is applied to a network side device, and is characterized in that the method comprises the following steps:

sending all OFDM symbols in the synchronous signal resource block;

wherein a phase difference between a reference signal corresponding to the first OFDM symbol and a reference signal corresponding to the second OFDM symbol in each resource group represents at least one bit of information;

the at least one bit of information comprises at least one of:

2. The method of claim 1, wherein prior to mapping reference signals on a first orthogonal frequency division multiplexing, OFDM, symbol and a second OFDM symbol, respectively, in each resource group in a synchronization signal resource block, the method further comprises:

3. The method of claim 1, wherein mapping reference signals on a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second OFDM symbol in each resource group in a synchronization signal resource block respectively comprises:

4. The method of claim 1, wherein mapping reference signals on a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second OFDM symbol in each resource group in a synchronization signal resource block respectively comprises:

5. Method according to claim 3 or 4, wherein said first OFDM symbol is a symbol for transmitting a secondary synchronization signal and said second OFDM symbol is any one of symbols for transmitting a reference signal of PBCH.

6. Method according to claim 3 or 4, wherein said first OFDM symbol and said second OFDM symbol are both symbols transmitting PBCH.

7. The method of claim 1, wherein the transmitting all OFDM symbols in the synchronization signal resource block comprises:

8. The method according to claim 3 or 4, wherein when the phase difference between the two sets of reference signals is 0, the phase difference represents an information bit of 0; when the phase difference between the two reference signals is pi, the phase difference represents an information bit 1;

alternatively, the first and second electrodes may be,

9. The method according to claim 3 or 4, characterized in that the phase difference between the two sets of reference signals belongs to the set {0, pi/2, pi 3, pi/2 }, and the information bits represented by the phase difference belong to the set {00, 01, 11, 10 }; wherein the phase difference corresponds to the information bits one to one.

10. A method for receiving information is applied to a terminal device, and comprises the following steps:

wherein a phase difference between a reference signal of the first OFDM symbol and a reference signal corresponding to a second OFDM symbol in each resource group represents at least one bit of the information;

the information includes at least one of:

11. The method of claim 10, wherein before the detecting the network-side device on the predefined Resource Elements (REs) of the first Orthogonal Frequency Division Multiplexing (OFDM) symbol and the second OFDM symbol in each resource group in the synchronization signal resource blocks, the method further comprises:

12. The method of claim 10 or 11, wherein the first OFDM symbol is a symbol for transmitting a secondary synchronization signal, and wherein the second OFDM symbol is any one of symbols for transmitting a reference signal of a PBCH.

13. The method of claim 10 or 11, wherein the first OFDM symbol and the second OFDM symbol are both symbols transmitting reference signals of PBCH.

14. The method according to claim 10 or 11, wherein when the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol is 0, the phase difference represents information bit 0; when the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol is pi, the phase difference represents information bit 1;

alternatively, the first and second electrodes may be,

15. The method according to claim 10 or 11, wherein the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol belongs to a set {0, pi/2, pi 3, pi/2 }, and the information bits represented by the phase difference belong to a set {00, 01, 11, 10 }; wherein the phase difference corresponds to the information bits one to one.

16. A network-side device, comprising:

the at least one bit of information comprises at least one of:

17. The network-side device of claim 16, wherein the network-side device further comprises:

the second processing module is used for dividing the synchronous signal resource block into at least two resource groups;

18. The network-side device of claim 16, wherein the first processing module comprises:

the first phase rotation submodule is used for carrying out phase rotation processing on at least one of the two groups of reference signals;

a first mapping sub-module, configured to map two sets of reference signals after phase rotation processing on preset resource elements RE of the first OFDM symbol and preset RE of the second OFDM symbol, respectively;

19. The network-side device of claim 16, wherein the first processing module comprises:

a second mapping sub-module, configured to map two groups of reference signals to be mapped onto preset REs of the first OFDM symbol and preset REs of the second OFDM symbol, respectively;

and the second phase rotation submodule is used for performing phase rotation processing on the first OFDM symbol and/or the second OFDM symbol.

20. The network-side device of claim 18 or 19, wherein the first OFDM symbol is a symbol for transmitting a secondary synchronization signal, and the second OFDM symbol is any one of symbols for transmitting a reference signal of a PBCH.

21. The network-side device of claim 18 or 19, wherein the first OFDM symbol and the second OFDM symbol are both symbols transmitting reference signals of PBCH.

22. The network-side device of claim 20, wherein the sending module is specifically configured to map PBCH and reference signals of PBCH in each resource group to a sending unit of an antenna for sending;

23. The network-side device according to claim 18 or 19, wherein when a phase difference between the two sets of reference signals is 0, the phase difference represents an information bit of 0; when the phase difference between the two groups of reference signals is pi, the phase difference represents an information bit 1;

alternatively, the first and second electrodes may be,

24. The network-side device of any one of claims 16 to 19, wherein the phase difference between the two sets of reference signals belongs to the set {0, pi/2, pi 3, pi/2 }, and the information bits represented by the phase difference belong to the set {00, 01, 11, 10 }; wherein the phase difference corresponds to the information bits one to one.

25. A terminal device, comprising:

the third processing module is used for performing channel estimation on the reference signals in each resource group to acquire a phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol in each resource group;

the fourth processing module is used for acquiring the information sent by the network side equipment according to the phase difference corresponding to each resource group;

the information includes at least one of:

26. The terminal device of claim 25, wherein the terminal device further comprises:

a fifth processing module, configured to divide the synchronization signal resource block into at least two resource groups;

27. The terminal device of claim 25 or 26, wherein the first OFDM symbol is a symbol in which a secondary synchronization signal is transmitted, and wherein the second OFDM symbol is any one of symbols in which a reference signal of a PBCH is transmitted.

28. The terminal device of claim 25 or 26, wherein the first OFDM symbol and the second OFDM symbol are both symbols transmitting reference signals of PBCH.

29. The terminal device according to claim 25 or 26, wherein when a phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol is 0, the phase difference represents an information bit of 0; when the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol is pi, the phase difference represents information bit 1;

alternatively, the first and second electrodes may be,

30. The terminal device according to claim 25 or 26, wherein the phase difference between the reference signal corresponding to the first OFDM symbol and the reference signal corresponding to the second OFDM symbol belongs to a set {0, pi/2, pi 3, pi/2 }, and the information bits represented by the phase difference belong to a set {00, 01, 11, 10 }; wherein the phase difference corresponds to the information bits one to one.