WO2017132993A1 - 一种控制信息的传输方法及装置 - Google Patents

一种控制信息的传输方法及装置 Download PDF

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Publication number
WO2017132993A1
WO2017132993A1 PCT/CN2016/073665 CN2016073665W WO2017132993A1 WO 2017132993 A1 WO2017132993 A1 WO 2017132993A1 CN 2016073665 W CN2016073665 W CN 2016073665W WO 2017132993 A1 WO2017132993 A1 WO 2017132993A1
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pss
control information
sss
synchronization sequence
symbol
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PCT/CN2016/073665
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English (en)
French (fr)
Inventor
赵雅琪
赵悦莹
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华为技术有限公司
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Priority to PCT/CN2016/073665 priority Critical patent/WO2017132993A1/zh
Publication of WO2017132993A1 publication Critical patent/WO2017132993A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

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  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and an apparatus for transmitting control information.
  • 5G fifth-generation
  • LTE Long Term Evolution
  • 5G adopts massive multi-input and multi-output technology (massive Multiple- Input Multiple-Output (massive MIMO) and beamforming technology
  • the base station can simultaneously transmit information on multiple beams.
  • control information such as downlink synchronization signals can be simultaneously transmitted on multiple beams.
  • Embodiments of the present invention provide a method and an apparatus for transmitting control information.
  • a method for transmitting a synchronization sequence comprising:
  • the base station sends control information to the terminal, where the length of the symbol occupied by the control information is N times of the symbol carrying the data information; and the N is a positive rational number.
  • the method for transmitting the control information is adjusted to N times of the normal symbol by using the method described in the first aspect of the embodiment, that is, the symbols of different lengths are supported in one subframe, and the length of the symbol occupied by the control information may be longer than the length of the normal symbol. Or shorter, so that the manner of transmitting the control information is more flexible, ensuring that the terminal can effectively receive the control information, thereby improving the efficiency of the terminal accessing the base station, and effectively saving channel resources.
  • control information may include a synchronization sequence and/or broadcast information.
  • the symbol of the transmission synchronization sequence may be two to three times the normal symbol in the existing LTE system, so a synchronization sequence More information can be carried, thereby extending the downlink coverage and user capacity of the synchronization sequence.
  • the time slot for transmitting the synchronization sequence for different modes of the cell may be different, because the transmission mode of the synchronization sequence is repeated, so
  • the description uses a data frame as an example to illustrate:
  • the synchronization sequence includes a local primary synchronization sequence PSS and a local secondary synchronization sequence SSS.
  • the specific implementation manner further includes:
  • sending the synchronization sequence includes:
  • the PSS When the cyclic prefix (Cyclic Prefix, CP for short) of the radio frame that sends the control information is a regular CP, the PSS is sent on the fifth symbol of the first and eleventh slots of the radio frame, and is sent.
  • the previous symbol of the PSS transmits the SSS; wherein the first and eleventh slots respectively comprise five symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the PSS is sent on a fourth symbol of the first and eleventh slots of the radio frame, and the SSS is sent before transmitting the PSS; wherein
  • the 1st and 11th time slots include four symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • sending the synchronization sequence includes:
  • the PSS is transmitted on the third symbol of the third and thirteenth slots of the radio frame, and the SSS is sent in the last symbol of the previous slot in which the PSS is transmitted;
  • the time slot for transmitting the PSS and the SSS includes six symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • Transmitting the PSS on a third symbol of the third and thirteenth time slots of the radio frame transmitting the SSS in a last symbol of a previous time slot in which the PSS is transmitted; wherein the PSS is transmitted
  • the slot of the SSS includes five symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • control information when the control information includes the broadcast information, the value of N may be 1/2; then the sending, by the base station, the control information to the terminal includes:
  • the slot of the broadcast information is sent when the CP of the radio frame transmitting the control information is a regular CP
  • the eleven symbols are included, and when the CP is an extended CP, the time slot includes ten symbols.
  • the base station can send the synchronization sequence and the broadcast information on different symbols according to different application environments.
  • a control information transmission apparatus comprising a functional module for performing the method of the first aspect.
  • a base station for performing the control information transmission method described in the first aspect.
  • the base station includes a memory and a processor and a receiver coupled to the memory, wherein: the processor reads an instruction stored in the memory for performing the following steps:
  • the processor sends the control information to the terminal by using the transmitter, where the length of the symbol occupied by the control information is N times of the symbol carrying the data information; and the N is a positive rational number.
  • the method for transmitting the control information is adjusted to N times of the normal symbol by using the method described in the first aspect of the embodiment, that is, the symbols of different lengths are supported in one subframe, and the length of the symbol occupied by the control information may be longer than the length of the normal symbol. Or shorter, so that the manner of transmitting control information is more flexible, and the effect of channel resources can be effectively saved.
  • the control information may include a synchronization sequence and/or broadcast information.
  • the control information includes a synchronization sequence
  • the synchronization sequence includes a local primary synchronization sequence PSS And the local secondary synchronization sequence SSS, and the N is equal to 2; then in the frequency division duplex FDD cell, when the CP is a regular CP, the processor utilizes the transmitter in the first and eleventh of the radio frame Transmitting the PSS on a fifth symbol of a time slot, transmitting the SSS in a previous symbol transmitting the PSS; wherein the first and eleventh time slots respectively comprise five symbols, and The symbols occupied by PSS and SSS are the same length.
  • the processor when the CP is an extended CP, the processor sends, by using the transmitter, the fourth symbol of the first and eleventh time slots of the radio frame.
  • the PSS transmits the SSS one before the transmitting of the PSS; wherein the first and eleventh time slots include four symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the base station is in the time division duplex cell, and when the CP is a regular CP, the processor uses the transmitter in the 3rd and 13th time slots of the radio frame. Transmitting the PSS on a third symbol, transmitting the SSS in a last symbol of a previous time slot in which the PSS is transmitted; wherein a time slot for transmitting the PSS and the SSS includes six symbols, and The symbols occupied by PSS and SSS are the same length.
  • the processor uses the transmitter to transmit the PSS on a third symbol of the third and thirteenth slots of the radio frame, before transmitting the PSS
  • the last symbol of the time slot transmits the SSS; wherein the time slot in which the PSS and the SSS are transmitted includes five symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the processor uses the transmitter to transmit the broadcast on the first to eighth symbols of the second slot of the radio frame.
  • Information wherein when the CP of the radio frame transmitting the control information is a regular CP, the time slot in which the broadcast information is transmitted includes eleven symbols, and when the CP is an extended CP, the time slot includes ten symbol.
  • the base station adjusts the symbol for transmitting the control information to N times of the normal symbol, that is, supports symbols of different lengths in one subframe, and the symbols occupied by the control information
  • the length can be longer or shorter than the normal symbol length, so that the manner of transmitting the control information is more flexible, the terminal can effectively receive the control information, and the channel resources can be effectively saved.
  • the length of the symbol of the synchronization sequence transmitted by the base station is N times (2 times or 3 times) the length of the common symbol, and the base station can support a longer synchronization sequence when the length of the symbol used for carrying the downlink synchronization sequence becomes longer. , thereby improving the downlink coverage and user capacity of the base station.
  • FIG. 1 is a schematic structural diagram of PSS and SSS frames and time slots in the time domain in the FDD mode in the prior art
  • FIG. 2 is a schematic structural diagram of PSS and SSS frames and time slots in a time domain in an FDD mode according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of PSS and SSS frame and time slot structures in the time domain in the TDD mode in the prior art
  • FIG. 4 is a schematic structural diagram of PSS and SSS frames and time slots in a time domain in a TDD mode according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a broadcast information time slot according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a control information transmission apparatus according to an embodiment of the present invention.
  • the method provided by the embodiment of the present invention is applied to a communication system in which a base station and a terminal synchronize with each other, wherein the base station and the terminal communicate with each other through some air interface technology.
  • the air interface technology may include: existing 4G (such as FDD LTE, TDD LTE) and 4.5G, 5G systems to be launched in the future.
  • the base station may include: an eNB in an LTE communication system, a NodeB in a UMTS communication system, and a GSM communication A BS (Base Station) in a letter system, or a base station device in a communication network of an LTE subsequent evolution, such as a base station device in a 5G system.
  • the terminal mentioned in the embodiment of the present invention may also be referred to as a user equipment (UE), and may include a wireless terminal such as a mobile phone or a tablet computer (with a SIM card), or may be a machine-to-machine (M2M, Machine). To Machine) Wireless terminals in communication (such as sensors, meters that can be metered remotely), and other mobile communication devices.
  • UE user equipment
  • M2M machine-to-machine
  • M2M Machine-to-machine
  • Wireless terminals in communication such as sensors, meters that can be metered remotely
  • the base station sends the control information to the terminal, and the length of the symbol occupied by the control information is existing. N times the length of the symbol is specified, that is, the length of the symbol occupied by the control information is increased or shortened, so that the manner in which the base station transmits the control information can be more flexible.
  • the embodiment of the invention provides a method for transmitting control information, which can be implemented by the following methods:
  • the base station sends control information to the terminal, where the length of the symbol occupied by the control information is N times of the symbol carrying the data information; and the N is a positive rational number.
  • N is a positive rational number, so N can take a positive integer and a positive fraction, and the symbol carrying the data information is a common symbol length specified in the protocol.
  • the common symbol length can be LTE protocol 36.211 6.2.3
  • OFDM Orthogonal Frequency Division Multiple
  • control information in the example may be a synchronization sequence and/or broadcast information, etc., respectively
  • the specific implementation of the method provided by the embodiment of the present invention is further described in detail by taking the synchronization sequence and the broadcast information as an example:
  • control information is a synchronization sequence
  • specific implementation may be:
  • the base station can be in a frequency division duplex (FDD) mode and a time division duplex (TDD) mode, cells in different modes are used.
  • the time slot for sending the synchronization sequence will be different.
  • one data frame is divided into 10 subframes in LTE, and one subframe is divided into two slots, that is, 20 data frames.
  • the time slots, the time slots in the subsequent description are all based on 20 time slots in a data frame:
  • the specific implementation of the synchronization sequence transmission may be:
  • the synchronization sequence includes a Primary Synchronization Sequence (PSS) and a Secondary Synchronization Sequence (SSS), and the length of the OFDM symbol occupied by the synchronization sequence is twice that of the symbol carrying the data information.
  • PSS Primary Synchronization Sequence
  • SSS Secondary Synchronization Sequence
  • the symbol may be an OFDM symbol
  • FIG. 1 is a manner of transmitting a synchronization sequence in a conventional CP
  • FIG. 2 is a position of a PSS and an SSS in a slot according to an embodiment of the present invention.
  • a slot Five OFDM symbols are included, the first OFDM symbol (OFDM symbol number 0#) to the third OFDM symbol (OFDM symbol number 2#) are the normal length OFDM symbols specified in the protocol 36.211 6.2.3, and the SSS is occupied.
  • the fourth OFDM symbol (3#) and the fifth OFDM symbol (4#) occupied by the PSS are twice as long as the normal length.
  • the first and eleventh time slots include four symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the slot includes four OFDM symbols, and the first OFDM symbol (0#) to the second OFDM symbol. (1#) Both are normal length OFDM symbols specified by the protocol, and the third OFDM symbol (2#) occupied by the SSS and the fourth OFDM symbol (3#) occupied by the PSS are twice the normal length.
  • the specific implementation of the synchronization sequence transmission may be:
  • the synchronization sequence includes a local primary synchronization sequence PSS and a local secondary synchronization sequence SSS; and the length of the OFDM symbol occupied by the synchronization sequence is twice the symbol symbol of the data information, including:
  • the CP when the CP is a regular CP, transmitting the PSS on a third symbol of the third and thirteenth slots of the radio frame, and transmitting the last symbol in a previous slot of the PSS SSS; wherein the time slot for transmitting the PSS and the SSS comprises six symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the subframe-based description may be that the PSS transmits the PSS on the third OFDM symbol in the first slot in the second subframe and the first slot in the sixth subframe.
  • the OFDM symbols occupied by the PSS and the SSS are in different time slots of the same subframe (as shown in FIG. 3).
  • the OFDM symbols occupied by the PSS and the SSS are in two adjacent time slots.
  • the CP when the CP is an extended CP, transmitting the PSS on a third symbol of the third and thirteenth slots of the radio frame, and sending the last symbol in the previous slot of the PSS The SSS; wherein, the time slot in which the PSS and the SSS are transmitted includes five symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • each slot includes five OFDM symbols in this mode.
  • the transmission mode of the above PSS sequence and the SSS sequence is described in the time domain.
  • the PSS sequence and the SSS sequence are still transmitted in the center 6 RBs of the entire system bandwidth, and the corresponding PSS sequence and The length of the SSS sequence is twice the length of the PSS and SSS signal sequences in the existing LTE technology; then the subcarrier spacing becomes half of the normal subcarrier; for example, if the signal subcarrier spacing in the existing LTE technology is 15 kHz, the present invention
  • the subcarrier spacing of the PSS sequence and the SSS sequence in the embodiment is 7.5 kHz.
  • N is equal to 2.
  • the implementation manner in which N is equal to 3 is the same as the implementation in which N is equal to 2 in the case of the above unified solution, and details are not described herein again.
  • the length of the OFDM symbol in which the base station transmits the synchronization sequence is N times the symbol length of the general downlink signal, and is used in the OFDM for carrying the downlink synchronization sequence.
  • the base station can support a longer synchronization sequence, and since one synchronization sequence can carry more information, the downlink coverage and user capacity of the synchronization sequence can be extended.
  • control information is broadcast information
  • specific implementation can be:
  • the control information includes the broadcast information, and the N is equal to 1/2.
  • the specific implementation of the base station sending the control information to the terminal may be:
  • the time slot in which the broadcast information is transmitted includes eleven symbols, and when the CP is an extended CP, the time slot includes ten symbols.
  • the existing broadcast information in LTE is transmitted on the first 4 symbols on the second time slot.
  • the broadcast information may be sent twice in the first eight symbols of the second time slot, where the broadcast information is also referred to as a Physical Broadcast Channel (PBCH).
  • PBCH Physical Broadcast Channel
  • the PBCH is sent once in the first four symbols, and the PBCH is sent again in the last four symbols (specifically in the conventional CP, the PBCH transmission in one slot is as shown in FIG. 5, PBCH1 is the first broadcast information, and the PBCH 2 bits.
  • the PBCH sent twice in this scheme may be the same or different, but each time the PBCH is sent is a complete broadcast information.
  • N is a fraction
  • the length of each symbol is shortened to a fraction of the normal symbol, so under the resource limitation of the original symbol length, more control information can be sent, so that it can be realized in a short time, for example, a sub- Broadcast information is transmitted multiple times within a frame to improve the transmission efficiency of broadcast information.
  • an embodiment of the present invention provides a base station.
  • the base station 600 can include: a network interface 601, a processor 602, a transmitter 603, a receiver 604, a coupler 605, an antenna 606, and a memory 607.
  • these components may be connected by a bus or other means, wherein the connection by bus is exemplified in FIG.
  • the network interface 601 is used for the base station 600 to perform data communication with the terminal (the terminals in the mobile stations MS, 3G, and 4G in the 2G).
  • the network interface 601 may include one or more of a GSM (2G) wireless network interface, a WCDMA (3G) wireless network interface, and an LTE (4G) wireless network interface, etc., or may be a future 4.5G or 5G wireless network interface.
  • the antenna 606 is configured to convert electromagnetic energy in the transmission line into electromagnetic waves in free space, or convert electromagnetic waves in free space into electromagnetic energy in the transmission line;
  • the coupler 605 is configured to divide the mobile communication signal into multiple paths and distribute the signals to multiple Receiver 604.
  • the transmitter 603 is configured to perform transmission processing (eg, modulation) on the mobile communication signal generated by the base station processor 602, and the receiver 604 is configured to perform reception processing (eg, demodulation) on the mobile communication signal received by the antenna 606, which can be regarded as A wireless modem.
  • the number of the transmitter 603 or the receiver 604 may be one or more.
  • the memory 607 is used to store program code.
  • the memory 607 can be a read only memory (ROM), and can be used to store program code.
  • the base station processor 602 is configured to perform radio channel management, implement call and communication link establishment and teardown, and control the handover of the terminal in the control area.
  • the base station processor 602 may include: an AM/CM module (a center for voice switching and information exchange), and a BM module (for completing call processing, signaling processing, radio resource management, and wireless link management). And circuit maintenance functions), TCSM module (for multiplexing and demultiplexing and code conversion functions) and other modules.
  • the base station processor 602 is further configured to invoke the program code stored in the memory 607 to perform the following steps:
  • the processor 602 sends the control information to the terminal by using the transmitter 603, where the length of the symbol occupied by the control information is N times the symbol of the bearer data information; and the N is a positive rational number.
  • N is a positive rational number, so N can take a positive integer and a positive fraction, and the symbol carrying the data information is the common symbol length specified in the protocol, and when the corresponding N takes a different value, the corresponding symbol occupied by the control information is reached.
  • the length can be longer or shorter than the length of the normal symbol, so that the manner of transmitting the control information is more flexible, and the terminal can effectively receive the control information, thereby improving the efficiency of the terminal accessing the base station, and effectively saving the channel. Resources.
  • control information in the example may be synchronization information (or synchronization sequence) and/or broadcast information, etc., and the specific implementation of the method provided by the embodiment of the present invention is further detailed in the following by taking the synchronization sequence and the broadcast information as examples. Description:
  • the following uses a data frame as an example to transmit the synchronization sequence in the embodiment of the present invention.
  • the specific implementation further illustrates that in LTE, one data frame is divided into 10 subframes, and one subframe is further divided into two slots, that is, one data frame has 20 slots, and the slots in the subsequent description are all The description is based on 20 time slots in a data frame:
  • the synchronization sequence includes a local primary synchronization sequence PSS and a local secondary synchronization sequence SSS, and the N is equal to 2;
  • the specific implementation can be:
  • the processor uses the transmitter to transmit the PSS on the fifth symbol of the first and eleventh slots of the radio frame, Sending the SSS of the PSS to send the SSS; wherein the first and eleventh slots respectively comprise five symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the processor uses the transmitter to transmit the PSS on the fourth symbol of the first and eleventh slots of the radio frame, before transmitting the PSS Transmitting the SSS; wherein the first and eleventh time slots comprise four symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the specific implementation can be:
  • the processor uses the transmitter to transmit the PSS on the third symbol of the third and thirteenth slots of the radio frame, The last symbol of the previous time slot in which the PSS is transmitted is sent by the SSS; wherein the time slot for transmitting the PSS and the SSS includes six symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the processor uses the transmitter to transmit the PSS on a third symbol of the third and thirteenth slots of the radio frame, before transmitting the PSS
  • the last symbol of the time slot transmits the SSS; wherein the time slot in which the PSS and the SSS are transmitted includes five symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the N may take 1/2; then the processor transmits the broadcast on the first to eighth symbols of the second slot of the radio frame by using the transmitter Information, wherein when the CP of the radio frame transmitting the control information is a regular CP, the time slot in which the broadcast information is transmitted includes eleven symbols, and when the CP is an extended CP, the time slot includes ten symbol.
  • an embodiment of the present invention provides a control information transmission apparatus, where the apparatus 700 includes a reading module and a sending module:
  • the reading module 701 is configured to read control information to be sent
  • the sending module 702 is configured to send control information to the terminal, where the length of the symbol occupied by the control information is N times that of the symbol carrying the data information; and the N is a positive rational number.
  • control information may include a synchronization sequence and/or broadcast information, where the synchronization sequence includes a local primary synchronization sequence PSS and a local secondary synchronization sequence SSS, when the N is equal to 2, and the specific implementation may include:
  • the sending module 702 is specifically configured to send the PSS on a fifth symbol of the first and eleventh slots of the radio frame, and send the previous symbol in the PSS SSS; wherein the first and eleventh time slots respectively comprise five symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the sending module 702 is specifically configured to send the PSS on the fourth symbol of the first and eleventh slots of the radio frame, and send the previous sending station of the PSS.
  • the sending module 702 is specifically configured to send the PSS on a third symbol of the third and thirteenth slots of the radio frame, at the end of the previous slot in which the PSS is sent.
  • One symbol transmits the SSS; wherein, the time slot in which the PSS and the SSS are transmitted includes six symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the sending module 702 is specifically configured to send the PSS on a third symbol of the third and thirteenth slots of the radio frame, and send a previous time slot of the PSS.
  • the last symbol of the SSS is sent; wherein the time slot for transmitting the PSS and the SSS includes five symbols, and the symbols occupied by the PSS and the SSS are the same length.
  • the sending module 702 is specifically configured to send the first to eighth symbols of the second time slot of the radio frame.
  • Broadcast information wherein when the CP of the radio frame transmitting the control information is a regular CP, the time slot in which the broadcast information is transmitted includes eleven symbols, and when the CP is an extended CP, the time slot includes ten Symbols.
  • the symbol for transmitting the control information is adjusted to N times of the normal symbol, that is, the symbols of different lengths are supported in one subframe, and the length of the symbol occupied by the control information may be longer than the length of the normal symbol or The method is shorter, so that the manner of transmitting the control information is more flexible, and the terminal can effectively receive the control information, thereby improving the efficiency of the terminal accessing the base station, and effectively saving channel resources.
  • the length of the symbol of the synchronization sequence transmitted by the base station is N times the length of the common symbol.
  • the base station can support a longer synchronization sequence, so a synchronization sequence can carry more More information, which can extend the downlink coverage and user capacity of the synchronization sequence.
  • N is a fraction
  • the length of each symbol is shortened to a fraction of the ordinary symbol.
  • more control information can be sent, so that broadcast information can be transmitted multiple times in a short time, for example, within one subframe, and the transmission efficiency of the broadcast information can be improved.
  • 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.

Abstract

一种控制信息的传输方法及装置，所述方法包括：基站发送控制信息到终端，其中，该控制信息所占用符号的长度为承载数据信息的符号的N倍；所述N为正有理数。本发明公开的方法和装置中一个子帧内支持不同长度的符号，使得发送控制信息的方式更为灵活，保证终端有效接收控制信息。

Description

一种控制信息的传输方法及装置 技术领域
本发明实施例涉及通信技术领域，尤其涉及一种控制信息的传输方法及装置。
背景技术
第五代(fifth-generation,简称5G)通信系统的发展将与目前的长期演进(Long Term Evolution，简称LTE)系统支持的场景有所不同，5G采用大规模多入多出技术(massive Multiple-Input Multiple-Output，简称massive MIMO)和波束成形(beamforming)技术，基站可以在多个波束(beam)上同时发送信息，例如可以在多个beam上同时发送下行同步信号等控制信息。
但是，由于每个beam分到的发射功率比较小，控制信息的下行覆盖范围会受到影响，终端(terminal)若无法接收控制信息，会影响其接入基站。
发明内容
本发明实施例提供一种控制信息的传输方法及装置。
第一方面，提供了一种同步序列的传输方法，所述方法包括：
基站发送控制信息到终端，其中，该控制信息所占用符号的长度为承载数据信息的符号的N倍；所述N为正有理数。
通过实施例第一方面描述的方法，将发送控制信息的符号调整为正常符号的N倍，即在一个子帧内支持不同长度的符号，控制信息所占用符号的长度可以比普通符号长度更长或更短，从而使得发送控制信息的方式更为灵活，保证终端能够有效接收控制信息，从而提升了终端接入基站的效率，并且能够有效节约信道资源。
本实施例中，控制信息可以包括同步序列和/或广播信息，当基站给终端发送同步序列时，发送同步序列的符号可以是现有LTE系统中正常符号的两到三倍，所以一个同步序列可以携带更多的信息，从而能够扩展同步序列的下行覆盖范围及用户容量。
因为本发明实施例所提供的方法，可以应用FDD模式和TDD模式的小区中，针对不同模式的小区发送同步序列的时隙会不相同，因为同步序列的发送方式是重复循环的，所以在以下说明中都以一个数据帧为例进行说明：
该同步序列包括本地主同步序列PSS和本地辅同步序列SSS，当所述N等于2；具体实现的方式还包括：
在一种是实现方式中，在频分双工FDD小区内，发送同步序列包括：
当发送所述控制信息的无线帧的循环前缀(Cyclic Prefix，简称CP)为常规CP时，在无线帧的第1个和第11个时隙的第五个符号上发送所述PSS，在发送所述PSS的前一个符号发送所述SSS；其中，所述第1个和第11个时隙分别包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
当所述CP为扩展CP时，在无线帧的第1个和第11个时隙的第四个符号上发送所述PSS，在发送所述PSS的前一个发送所述SSS；其中，所述第1个和第11个时隙包括四个符号，且所述PSS和SSS所占用的符号的长度相同。
在一种实现方式中，在时分双工TDD小区内，发送同步序列包括：
当CP为常规CP时，在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括六个符号，且所述PSS和SSS所占用的符号的长度相同。
在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS 和所述SSS的时隙包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
另外，当控制信息包括广播信息时，N的值可以取1/2；则所述基站发送控制信息到终端包括：
在无线帧的第2个时隙的第一到第八个符号上发送所述广播信息，其中，当发送所述控制信息的无线帧的CP为常规CP时，发送所述广播信息的时隙包括十一个符号，当所述CP为扩展CP时，所述时隙包括十个符号。通过设计更短的符号长度，则可以实现在短时间内，例如一个子帧内多次传输广播信息，提升广播信息的传输效率。
通过上述各个实现方式，基站可以根据不同的应用环境在不同的符号上发送同步序列和广播信息。
第二方面，提供一种控制信息传输装置，该装置包括执行第一方面所述方法的功能模块。
第三方面，提供一种基站，用于执行第一方面描述的控制信息传输方法。所述基站包括：存储器以及与所述存储器耦合的处理器、接收器，其中：所述处理器读取所述存储器中存储的指令，用于执行以下步骤：
所述处理器利用所述发射器发送控制信息到终端，其中，该控制信息所占用符号的长度为承载数据信息的符号的N倍；所述N为正有理数。
通过实施例第一方面描述的方法，将发送控制信息的符号调整为正常符号的N倍，即在一个子帧内支持不同长度的符号，控制信息所占用符号的长度可以比普通符号长度更长或更短，从而使得发送控制信息的方式更为灵活，并且能够有效节约信道资源的效果。
本实施例中，控制信息可以包括同步序列和/或广播信息，在一种可能的实现方式中，当控制信息包括同步序列，且同步序列包括本地主同步序列PSS 和本地辅同步序列SSS，且所述N等于2；则在频分双工FDD小区内，当CP为常规CP时，所述处理器利用所述发射器在无线帧的第1个和第11个时隙的第五个符号上发送所述PSS，在发送所述PSS的前一个符号发送所述SSS；其中，所述第1个和第11个时隙分别包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
在基站中的一种可能的实现方式中，当所述CP为扩展CP时，所述处理器利用所述发射器在无线帧的第1个和第11个时隙的第四个符号上发送所述PSS，在发送所述PSS的前一个发送所述SSS；其中，所述第1个和第11个时隙包括四个符号，且所述PSS和SSS所占用的符号的长度相同。
在基站中的另外一种可能的实现方式中，基站在时分双工小区内，当CP为常规CP时，所述处理器利用所述发射器在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括六个符号，且所述PSS和SSS所占用的符号的长度相同。
当所述CP为扩展CP时，所述处理器利用所述发射器在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
另外，当控制信息中包括广播信息，则N的值可以取1/2；则处理器利用所述发射器在无线帧的第2个时隙的第一到第八个符号上发送所述广播信息，其中，当发送所述控制信息的无线帧的CP为常规CP时，发送所述广播信息的时隙包括十一个符号，当所述CP为扩展CP时，所述时隙包括十个符号。
本发明实施例提供的技术方案中，基站将发送控制信息的符号调整为正常符号的N倍，即在一个子帧内支持不同长度的符号，控制信息所占用符号 的长度可以比普通符号长度更长或更短，从而使得发送控制信息的方式更为灵活，保证了终端对控制信息的有效接收，并且能够有效节约信道资源。
进一步地，基站发送同步序列的符号的长度为普通符号长度的N倍(2倍或3倍)，在用于承载下行同步序列的符号长度变长的情况下，基站可支持更长的同步序列，从而提升了基站的下行覆盖范围及用户容量。
附图说明
图1为现有技术中FDD方式下在时域上的PSS和SSS帧和时隙结构示意图；
图2为本发明实施例中FDD方式下在时域上的PSS和SSS帧和时隙结构示意图；
图3为现有技术中TDD方式下在时域上的PSS和SSS帧和时隙结构的示意图；
图4为本发明实施例中TDD方式下在时域上的PSS和SSS帧和时隙结构示意图；
图5为本发明实施例中广播信息时隙结构示意图；
图6为本发明实施例一种基站的结构示意图；
图7为本发明实施例一种控制信息传输装置的结构示意图。
具体实施方式
本发明实施例所提供的方法应用与基站与终端进行同步的通信系统中，其中，基站与终端通过某种空口技术相互通信。所述空口技术可包括：现有的4G(如FDD LTE、TDD LTE)以及未来即将面市的4.5G、5G系统等。基站可包括：LTE通信系统中的eNB、UMTS通信系统中的NodeB和GSM通 信系统中的BS(Base Station)，或LTE后续演进的通信网络中的基站设备，例如5G系统中的基站设备。
本发明实施例中所提到的终端，也可以称为用户设备(user equipment，UE)，可包括：手机、平板电脑(携带SIM卡)等无线终端，也可以是机器对机器(M2M，Machine to Machine)通信中的无线终端(例如传感器，能远程抄表的仪表)，以及其他移动通信设备。
下面先介绍本发明提供的控制信息传输方法的总体构思，本发明实施例提供的方案为了提高控制信息的下行覆盖范围，基站在给终端发送控制信息时，控制信息所占用符号的长度是现有规定符号长度的N倍，即控制信息所占用符号的长度会增加或缩短，从而基站所发送控制信息的方式可以更灵活。
下面结合说明书附图对本发明实施例作进一步详细描述。
实施例
本发明实施例提供一种控制信息的传输方法，所述方法可以通过以下提供方式实现：
基站发送控制信息到终端，其中，该控制信息所占用符号的长度为承载数据信息的符号的N倍；所述N为正有理数。
在该实施例中，N为正有理数所以N可以取正整数和正分数，承载数据信息的符号为协议中规定的普通符号长度，在实施例中，普通符号长度可以是LTE协议36.211 6.2.3中规定的普通正交频分多址(Orthogonal Frequency Division Multiple，简称OFDM)符号的长度，则对应的N取不同的值时，对应达到控制信息所占用符号的长度可以比普通符号长度更长或更短的效果，从而使得发送控制信息的方式更为灵活，保证终端能够有效接收到控制信息，从而提升了终端接入基站的效率，并且能够有效节约信道资源。
可选的，该实例中控制信息可以是同步序列和/或广播信息等，以下分别 以同步序列和广播信息为例对本发明实施例所提供的方法的具体实现做进一步详细的说明：
一、控制信息为同步序列时，具体实现可以是：
在本发明实施例所提供的方法中，因为基站可以在频分双工(Frequency Division Duplexing，简称FDD)模式和时分双工(Time Division Duplexing，简称TDD)模式的小区中，针对不同模式的小区发送同步序列的时隙会不相同，为了方便理解下面以一个数据帧，在LTE中一个数据帧分为10个子帧，一个子帧又分为两个时隙，也即一个数据帧有20个时隙，后续描述中的时隙都以一个数据帧中的20个时隙为基础进行说明：
1、在FDD小区内，同步序列的发送具体实现可以是：
其中，同步序列包括本地主同步序列(Primary Synchronization Sequence，简称PSS)和本地辅同步序列(Secondary Synchronization Sequence，简称SSS)，且同步序列所占用OFDM符号的长度为承载数据信息的符号的2倍；具体实现为：
1a，当发送所述控制信息的无线帧的CP为常规CP时，在无线帧的第1个和第11个时隙的第五个符号上发送所述PSS，在发送所述PSS的前一个符号发送所述SSS；其中，所述第1个和第11个时隙分别包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
在该实例中，该符号可以是OFDM符号，图1为现有常规CP中发送同步序列的方式，图2为本发明实施例一个时隙中PSS和SSS的位置，该实例中，一个时隙包括了五个OFDM符号，第一个OFDM符号(OFDM符号编号0#)到第三个OFDM符号(OFDM符号编号2#)都为协议36.211 6.2.3中规定的正常长度的OFDM符号，SSS占用的第四个OFDM符号(3#)和PSS占用的第五个OFDM符号(4#)的长度则为正常长度的两倍。
1b，当所述CP为扩展CP时，在无线帧的第1个和第11个时隙的第四个符号上发送所述PSS，在发送所述PSS的前一个发送所述SSS；其中，所述第1个和第11个时隙包括四个符号，且所述PSS和SSS所占用的符号的长度相同。
当所述CP为扩展CP时，在图2所示的实例中，以一个时隙为例，该时隙包括了四个OFDM符号，第一个OFDM符号(0#)到第二个OFDM符号(1#)都为协议规定的正常长度的OFDM符号，SSS占用的第三个OFDM符号(2#)和PSS占用的第四个OFDM符号(3#)的长度则为正常长度的两倍。
2、在时分双工TDD小区内，同步序列的发送具体实现可以是：
其中，同步序列包括本地主同步序列PSS和本地辅同步序列SSS；且同步序列所占用OFDM符号的长度为承载数据信息的符号符号的2倍，具体包括：
2a，当CP为常规CP时，在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括六个符号，且所述PSS和SSS所占用的符号的长度相同。另外，基于子帧的描述可以是：PSS是在第二个子帧中的第一个时隙和第六个子帧的第一个时隙中的第三个OFDM符号上发送PSS。
现有技术中PSS和SSS所占用的OFDM符号在同一个子帧的不同时隙中(如图3所示)，本发明实施例中，PSS和SSS占用的OFDM符号在两个相邻的时隙中(如图4所示，时隙a和时隙b，时隙a由图4中前6个OFDM符号组成，时隙b图4中后6个OFDM符号组成)，SSS占用时隙a的第六个OFDM符号(5#)，PSS占用时隙b的第三个OFDM符号(2#)；PSS和SSS占用的OFDM符号的长度为为正常长度的两倍，时隙a和时隙b中除PSS和 SSS占用的OFDM符号外的其他OFDM符号的长度为正常长度。
2b，当所述CP为扩展CP时，在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
该实现方式与TDD小区常规CP的区别在于，该方式下每个时隙包括五个OFDM符号。
上述PSS序列和SSS序列的传输方式是在时域进行说明，对照时域的实现，在频域上，PSS序列和SSS序列依然在整个系统带宽的中心6个RB内传输，对应的PSS序列和SSS序列长度是现有LTE技术中PSS和SSS信号序列长度的两倍；则子载波间隔变为正常子载波的一半；例如，假设现有的LTE技术中信号子载波间隔为15kHz，则本发明实施例中的PSS序列和SSS序列的子载波间隔为7.5kHz。
上述具体实例都是以N等于2进行的说明的，基于上述统一思路的情况下，N等于3的实现方式和N等于2的实现方式相同，以下不再赘述。
本发明实施例提供的方法中，在一个子帧内支持不同的OFDM符号长度，基站发送同步序列的OFDM符号的长度为一般下行信号的符号长度的N倍，在用于承载下行同步序列的OFDM符号长度变长的情况下，基站可支持更长的同步序列，由于一个同步序列可以携带更多的信息，从而能够扩展同步序列的下行覆盖范围及用户容量。
二、控制信息为广播信息时，具体实现可以是：
所述控制信息包括广播信息，所述N等于1/2；则所述基站发送控制信息到终端的具体实现可以是：
在无线帧的第2个时隙的第一到第八个符号上发送所述广播信息，其中， 当发送所述控制信息的无线帧的CP为常规CP时，发送所述广播信息的时隙包括十一个符号，当所述CP为扩展CP时，所述时隙包括十个符号。
现有LTE中广播信息在第二个时隙上前4个符号上发送。本发明实施例中，当N等于1/2时，则可在第二个时隙前八个符号中发送两次广播信息，其中，广播信息又称为广播信道(Physical Broadcast Channel，简称PBCH)，其中前四个符号发送一次PBCH，后四个符号再发送一次PBCH(具体在常规CP中，一个时隙中PBCH的发送如图5所示，PBCH1为第一次发送的广播信息，PBCH2位第二次发送的广播信息)。另外，该方案中两次发送的PBCH可以相同，也可以不相同，但是每次发送的PBCH都是一个完整的广播信息。当N为分数时，每个符号的长度缩短为普通符号的几分之1，所以在原有符号长度的资源限制下，可以发送更多的控制信息，从而可以实现在短时间内，例如一个子帧内多次传输广播信息，提升广播信息的传输效率。
实施例
如图6所示，本发明实施例提供一种基站，基站600可包括：网络接口601、处理器602、发射器603、接收器604、耦合器605、天线606和存储器607。在本发明的一些实施例中，这些部件可通过总线或者其它方式连接，其中，图6中以通过总线连接为例。
其中，网络接口601用于基站600与终端(2G中的移动台MS、3G和4G中的终端)进行数据通信。具体实现中，网络接口601可包括：GSM(2G)无线网络接口、WCDMA(3G)无线网络接口以及LTE(4G)无线网络接口等等中的一种或几种，也可以是未来4.5G或5G的无线网络接口。
天线606用于将传输线中的电磁能转换成自由空间中的电磁波，或者将自由空间中的电磁波转换成传输线中的电磁能；耦合器605用于将移动通信号分成多路，分配给多个的接收器604。
发射器603用于对基站处理器602生成的移动通信信号进行发射处理(例如调制)，接收器604用于对天线606接收的移动通信信号进行接收处理(例如解调)，二者可看作一个无线调制解调器。具体实现中，发射器603或接收器604的数量可以是一个或多个。
存储器607用于存储程序代码，具体实现中，存储器607可以采用只读存储器(Read Only Memory，ROM)，可用于存储程序代码。
基站处理器602，用于进行无线信道管理、实施呼叫和通信链路的建立和拆除，并为本控制区内终端的过区切换进行控制等。具体实现中，基站处理器602可包括：AM/CM模块(用于话路交换和信息交换的中心)、BM模块(用于完成呼叫处理、信令处理、无线资源管理、无线链路的管理和电路维护功能)、TCSM模块(用于完成复用解复用及码变换功能)等模块。具体信息可参考移动通讯相关知识。本发明实施例中，基站处理器602还用于调用存储于存储器607中程序代码执行如下步骤：
所述处理器602利用所述发射器603发送控制信息到终端，其中，该控制信息所占用符号的长度为承载数据信息的符号的N倍；所述N为正有理数。
在该实施例中，N为正有理数所以N可以取正整数和正分数，承载数据信息的符号为协议中规定的普通符号长度，则对应的N取不同的值时，对应达到控制信息所占用符号的长度可以比普通符号长度更长或更短的效果，从而使得发送控制信息的方式更为灵活，保证终端能够有效接收到控制信息，从而提升了终端接入基站的效率，并且能够有效节约信道资源。
可选的，该实例中控制信息可以是同步信息(或者同步序列)和/或广播信息等，以下分别以同步序列和广播信息为例对本发明实施例所提供的方法的具体实现做进一步详细的说明：
为了方便理解下面以一个数据帧为例对本发明实施例中同步序列发送的 具体实现作进一步的说明，在LTE中一个数据帧分为10个子帧，一个子帧又分为两个时隙，也即一个数据帧有20个时隙，后续描述中的时隙都是以一个数据帧中的20个时隙为基础进行说明的：
具体应用场景中，同步序列包括本地主同步序列PSS和本地辅同步序列SSS，且所述N等于2；
一，在频分双工FDD小区内，具体实现可以是：
当发送所述控制信息的无线帧的CP为常规CP时，所述处理器利用所述发射器在无线帧的第1个和第11个时隙的第五个符号上发送所述PSS，在发送所述PSS的前一个符号发送所述SSS；其中，所述第1个和第11个时隙分别包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
当所述CP为扩展CP时，所述处理器利用所述发射器在无线帧的第1个和第11个时隙的第四个符号上发送所述PSS，在发送所述PSS的前一个发送所述SSS；其中，所述第1个和第11个时隙包括四个符号，且所述PSS和SSS所占用的符号的长度相同。
二、在时分双工TDD小区内，具体实现可以是：
当发送所述控制信息的无线帧的CP为常规CP时，所述处理器利用所述发射器在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括六个符号，且所述PSS和SSS所占用的符号的长度相同。
当所述CP为扩展CP时，所述处理器利用所述发射器在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
另外，当控制信息包括广播信息，所述N可以取1/2；则所述处理器利用所述发射器在无线帧的第2个时隙的第一到第八个符号上发送所述广播信息，其中，当发送所述控制信息的无线帧的CP为常规CP时，发送所述广播信息的时隙包括十一个符号，当所述CP为扩展CP时，所述时隙包括十个符号。
实施例
如图7所示，本发明实施例提供一种控制信息传输装置，该装置700包括读取模块和发送模块：
所述读取模块701，用于读取待发送的控制信息；
发送模块702，用于发送控制信息到终端，其中，该控制信息所占用符号的长度为承载数据信息的符号的N倍；所述N为正有理数。
在具体的应用场景中，控制信息可以包括同步序列和/或广播信息，其中，同步序列包括本地主同步序列PSS和本地辅同步序列SSS，当所述N等于2时；具体实现可以是包括：
一，在频分双工FDD小区内：
当CP为常规CP时，该发送模块702具体用于在无线帧的第1个和第11个时隙的第五个符号上发送所述PSS，在发送所述PSS的前一个符号发送所述SSS；其中，所述第1个和第11个时隙分别包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
当所述CP为扩展CP时，该发送模块702具体用于在无线帧的第1个和第11个时隙的第四个符号上发送所述PSS，在发送所述PSS的前一个发送所述SSS；其中，所述第1个和第11个时隙包括四个符号，且所述PSS和SSS所占用的符号的长度相同。
二，在时分双工TDD小区内：
当CP为常规CP时，该发送模块702具体用于在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括六个符号，且所述PSS和SSS所占用的符号的长度相同。
当所述CP为扩展CP时，该发送模块702具体用于在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
另外，当控制信息包括广播信息时，如果所述N取值为1/2；则该发送模块702具体用于在无线帧的第2个时隙的第一到第八个符号上发送所述广播信息，其中，当发送所述控制信息的无线帧的CP为常规CP时，发送所述广播信息的时隙包括十一个符号，当所述CP为扩展CP时，所述时隙包括十个符号。
本申请实施例中的上述一个或多个技术方案，至少具有如下的技术效果：
本发明实施例提供的方法中，将发送控制信息的符号调整为正常符号的N倍，即在一个子帧内支持不同长度的符号，控制信息所占用符号的长度可以比普通符号长度更长或更短，从而使得发送控制信息的方式更为灵活，保证终端能够有效接收到控制信息，从而提升了终端接入基站的效率，并且能够有效节约信道资源。
另外，基站发送同步序列的符号的长度为普通符号长度的N倍，在用于承载下行同步序列的符号长度变长的情况下，基站可支持更长的同步序列，所以一个同步序列可以携带更多的信息，从而能够扩展同步序列的下行覆盖范围及用户容量。
另外，当N为分数时，每个符号的长度缩短为普通符号的几分之1，所 以在原有符号长度的资源限制下，可以发送更多的控制信息，从而可以实现在短时间内，例如一个子帧内多次传输广播信息，提升广播信息的传输效率。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (12)

  1. 一种控制信息的传输方法，其特征在于，所述方法包括：
    基站发送控制信息到终端，其中，该控制信息所占用符号的长度为承载数据信息的符号的N倍；所述N为正有理数。
  2. 如权利要求1所述的方法，其特征在于，所述控制信息包括同步序列，并且所述同步序列包括本地主同步序列PSS和本地辅同步序列SSS，所述N等于2；所述基站在频分双工FDD小区内，则所述基站发送控制信息到终端包括：
    当发送所述控制信息的无线帧的CP为常规CP时，在无线帧的第1个和第11个时隙的第五个符号上发送所述PSS，在发送所述PSS的前一个符号发送所述SSS；其中，所述第1个和第11个时隙分别包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
  3. 如权利要求1所述的方法，其特征在于，所述控制信息包括同步序列，并且所述同步序列包括本地主同步序列PSS和本地辅同步序列SSS，所述N等于2；所述基站在频分双工FDD小区内，则所述基站发送控制信息到终端包括：
    当发送所述控制信息的无线帧的循环前缀CP为扩展CP时，在无线帧的第1个和第11个时隙的第四个符号上发送所述PSS，在发送所述PSS的前一个发送所述SSS；其中，所述第1个和第11个时隙包括四个符号，且所述PSS和SSS所占用的符号的长度相同。
  4. 如权利要求1所述的方法，其特征在于，所述控制信息包括同步序列，并且所述同步序列包括本地主同步序列PSS和本地辅同步序列SSS，所述N等于2；所述基站在时分双工TDD小区内，则所述基站发送控制信息到终端 包括：
    当发送所述控制信息的无线帧的循环前缀CP为常规CP时，在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括六个符号，且所述PSS和SSS所占用的符号的长度相同。
  5. 如权利要求1所述的方法，其特征在于，所述控制信息包括同步序列，并且所述同步序列包括本地主同步序列PSS和本地辅同步序列SSS，所述N等于2；所述基站在时分双工TDD小区内，则所述基站发送控制信息到终端包括：
    当发送所述控制信息的无线帧的循环前缀CP为扩展CP时，在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
  6. 如权利要求1所述的方法，其特征在于，所述控制信息包括广播信息，所述N等于1/2；则所述基站发送控制信息到终端包括：
    在无线帧的第2个时隙的第一到第八个符号上发送所述广播信息，其中，当发送所述控制信息的无线帧的循环前缀CP为常规CP时，发送所述广播信息的时隙包括十一个符号，当所述CP为扩展CP时，所述时隙包括十个符号。
  7. 一种基站，其特征在于，所述基站包括：存储器以及与所述存储器耦合的处理器、接收器，其中：所述处理器读取所述存储器中存储的指令，用于执行以下步骤：
    所述处理器利用所述发射器发送控制信息到终端，其中，该控制信息所占用符号的长度为承载数据信息的符号的N倍；所述N为正有理数。
  8. 如权利要求7所述的基站，其特征在于，所述控制信息包括同步序列， 并且所述同步序列包括本地主同步序列PSS和本地辅同步序列SSS，所述N等于2；所述基站在频分双工FDD小区内，当发送所述控制信息的无线帧的循环前缀CP为常规CP时，所述处理器利用所述发射器在无线帧的第1个和第11个时隙的第五个符号上发送所述PSS，在发送所述PSS的前一个符号发送所述SSS；其中，所述第1个和第11个时隙分别包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
  9. 如权利要求6所述的基站，其特征在于，所述控制信息包括同步序列，并且所述同步序列包括本地主同步序列PSS和本地辅同步序列SSS，所述N等于2；所述基站在频分双工FDD小区内，当发送所述控制信息的无线帧的循环前缀CP为扩展CP时，所述处理器利用所述发射器在无线帧的第1个和第11个时隙的第四个符号上发送所述PSS，在发送所述PSS的前一个发送所述SSS；其中，所述第1个和第11个时隙包括四个符号，且所述PSS和SSS所占用的符号的长度相同。
  10. 如权利要求7所述的基站，其特征在于，所述控制信息包括同步序列，并且所述同步序列包括本地主同步序列PSS和本地辅同步序列SSS，所述N等于2；所述基站在时分双工TDD小区内，当发送所述控制信息的无线帧的循环前缀CP为常规CP时，所述处理器利用所述发射器在无线帧的第3个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括六个符号，且所述PSS和SSS所占用的符号的长度相同。
  11. 如权利要求7所述的基站，其特征在于，所述控制信息包括同步序列，并且所述同步序列包括本地主同步序列PSS和本地辅同步序列SSS，所述N等于2；所述基站在时分双工TDD小区内，当发送所述控制信息的无线帧的循环前缀CP为扩展CP时，所述处理器利用所述发射器在无线帧的第3 个和第13个时隙的第三个符号上发送所述PSS，在发送所述PSS的前一个时隙的最后一个符号发送所述SSS；其中，发送所述PSS和所述SSS的时隙包括五个符号，且所述PSS和SSS所占用的符号的长度相同。
  12. 如权利要求7所述的基站，其特征在于，所述控制信息包括广播信息，所述N等于1/2；则所述处理器利用所述发射器在无线帧的第2个时隙的第一到第八个符号上发送所述广播信息，其中，当发送所述控制信息的无线帧的循环前缀CP为常规CP时，发送所述广播信息的时隙包括十一个符号，当所述CP为扩展CP时，所述时隙包括十个符号。
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