WO2018000318A1

WO2018000318A1 - Device and method for transmitting synchronization signal, and multi-antenna communication system

Info

Publication number: WO2018000318A1
Application number: PCT/CN2016/087877
Authority: WO
Inventors: 周华; 郤伟
Original assignee: 富士通株式会社; 周华; 郤伟
Priority date: 2016-06-30
Filing date: 2016-06-30
Publication date: 2018-01-04

Abstract

A device and method for transmitting a synchronization signal, and a multi-antenna communication system. The method for transmitting the synchronization signal comprises: periodically transmitting synchronization channel information on one or more beams formed by multiple antennas, where different beams are provided with different beam identifiers, and synchronization channels on different beams occupy different time-domain resources and/or frequency-domain resources. As such, the synchronization signal can cover an extended range, solved is the problem of insufficient coverage by a synchronization channel in an existing communication standard; in addition, prevented is the problem of mutual interference between synchronization channels on different beams.

Description

Synchronization signal transmission device, method and multi-antenna communication system

Technical field

The present invention relates to the field of communications technologies, and in particular, to a synchronization signal transmission apparatus and method, and a multi-antenna communication system.

Background technique

Large-scale antennas are used to enhance system coverage, eliminate interference between user equipment, reduce the number of sites, and reduce the cost of operation and maintenance. It is one of the popular candidate technologies in current and future wireless communication systems. In recent years, three-dimensional (3D) beamforming techniques have been extensively studied due to the development of antenna technology and the advantage of lowering the size of the antenna array by using higher operating frequencies.

Figure 1 is a schematic diagram of beamforming of user equipment, showing the principle of using this technique. As shown in FIG. 1, by beam alignment of a transmitting end (for example, a base station), a receiving end (for example, a user equipment) can acquire a higher beamforming gain, thereby reducing interference between user equipments. Moreover, the system can support multi-user multi-antenna technology with more data streams, spatially multiplex user equipment, and further increase system capacity.

There have been many studies on how to use multiple beams (Beam).

2 is a schematic diagram of a multi-antenna system employing beamforming. As shown in FIG. 2, a transmitting end (for example, a base station) transmits a plurality of beams in different directions (for example, beam 1 to beam 4 shown in FIG. 2) to different receiving. At the end (eg, user equipment), each beam may be in a fixed direction, or the beam direction may vary depending on the location of the user equipment. Considering that the transmission power of the transmitting end is limited, it is unrealistic to transmit multiple beams covering the entire cell at the same time. For this reason, the transmitting end can adopt a beam sweeping method, that is, beam splitting in different directions, user equipment. The appropriate beam is selected as the path for data transmission based on the received intensity of each beam.

And in the future, beamforming in the analog and digital domains will also be used in large numbers.

3 is a schematic diagram of a multiple antenna system employing analog beamforming and digital beamforming. As shown in FIG. 3, some antenna elements are connected to different Transmitting and Receiving Units (TXRUs), and different TXRUs have independent phase and/or power adjustments to form different analog beams (which may have analog beam identification). And multiple TXRUs are connected to different antenna ports (AP, Antenna Port), and different digital beams (which may have digital beam identification) can be formed by weighting the digital domain.

On the other hand, in the current communication standard, the synchronization channel uses a fixed period and is at a fixed time-frequency resource bit. Set the transfer.

4 is a schematic diagram of a synchronization channel transmission of a Long Term Evolution (LTE) system. As shown in FIG. 4, a synchronization channel carries a cell identifier (Cell ID) of a physical layer, for example, by using the following formula:

among them

For the group identification, it is transmitted by the secondary synchronization signal (SSS, Secondary Synchronization Signal).

It is an intra-group identifier and is transmitted by the Primary Synchronization Signal (PSS). The cell identifier of the physical layer occupies six physical resource blocks (PRBs) in the center of the frequency band in the frequency domain, and each of the PSS and the SSS occupies one symbol in the time domain. The PSS is represented by a ZC (Zadoff-Chu) sequence, for example, by the following method:

The SSS is represented by combining two m sequences of length 31 (refer to TS36.211 section 6.11.2). The user equipment calculates the cell identity of the physical layer according to the detected signal sequence by detecting signals at these locations.

It should be noted that the above description of the technical background is only for the purpose of facilitating a clear and complete description of the technical solutions of the present invention, and is convenient for understanding by those skilled in the art. The above technical solutions are not considered to be well known to those skilled in the art simply because these aspects are set forth in the background section of the present invention.

Summary of the invention

However, the inventors have found that in the existing standard, the synchronization channel is transmitted only on a single antenna port in order to support the synchronization of the old version of the user equipment. While multi-antenna technology enhances the performance of data channel transmission, for control channels (such as synchronization channels), due to backward compatibility, there is currently no enhancement of multi-antenna technology.

In future communication systems, especially 5G New Radio (NR) systems, there is no need to consider backward compatibility, and multi-antenna technology makes it possible to enhance the performance of control channels (such as synchronization channels). However, how to use multi-antenna technology (including beamforming, etc.) to enhance the control channel has no better solution.

Embodiments of the present invention provide a synchronization signal transmission apparatus, method, and multi-antenna communication system. The synchronization channel information is transmitted on one or more beams, and the multi-antenna technique can be employed to enhance the synchronization channel.

According to a first aspect of the present invention, a method for transmitting a synchronization signal is provided, which is applied to a transmitting end of a multi-antenna system, and the transmission method includes:

Synchronizing channel information is periodically transmitted on one or more beams formed by multiple antennas;

The different beams have different beam identifiers, and the synchronization channels on different beams occupy different time domain resources and/or frequency resources.

According to a second aspect of the present invention, a transmission device for a synchronization signal is provided, which is configured at a transmitting end of a multi-antenna system, and the transmission device includes:

a transmitting unit that periodically transmits synchronization channel information on one or more beams formed by multiple antennas;

According to a third aspect of the embodiments of the present invention, a method for transmitting a synchronization signal is provided, which is applied to a receiving end of a multi-antenna system, where the transmission method includes:

Detecting synchronization channel information periodically sent by the transmitting end on one or more beams;

According to a fourth aspect of the present invention, a transmission device for a synchronization signal is provided, which is configured at a receiving end of a multi-antenna system, and the transmission device includes:

a detecting unit, which detects synchronization channel information periodically sent by the transmitting end on one or more beams;

According to a fifth aspect of the embodiments of the present invention, a multi-antenna communication system is provided, the multi-antenna communication system comprising:

a transmitting end configured with the transmission device of the synchronization signal according to the second aspect;

The receiving end is configured with the transmission device of the synchronization signal according to the fourth aspect.

The beneficial effects of the embodiments of the present invention are: transmitting synchronization channel information on one or more beams, so that the synchronization channel covers a far range, and solving the problem that the synchronization channel coverage is insufficient in the existing communication standard; The synchronization channel on the other occupies different time domain resources and/or frequency resources, which can avoid the problem that the synchronization channels on different beams interfere with each other.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the drawings, in which <RTIgt; It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in one or more other embodiments in the same or similar manner, in combination with, or in place of, features in other embodiments. .

It should be emphasized that the term "comprising" or "comprises" or "comprising" or "comprising" or "comprising" or "comprising" or "comprises"

DRAWINGS

The elements and features described in one of the figures or one embodiment of the embodiments of the invention may be combined with the elements and features illustrated in one or more other figures or embodiments. In the accompanying drawings, like reference numerals refer to the

1 is a schematic diagram of beamforming of a user equipment;

2 is a schematic diagram of a multi-antenna system employing beamforming;

3 is a schematic diagram of a multi-antenna system employing analog beamforming and digital beamforming;

4 is a schematic diagram of synchronous channel transmission of a long term evolution system;

FIG. 5 is a schematic diagram of a method for transmitting a synchronization signal according to Embodiment 1 of the present invention; FIG.

6 is a schematic diagram of synchronization channel transmission in a multi-antenna communication system according to Embodiment 1 of the present invention;

7 is another schematic diagram of synchronization channel transmission in a multi-antenna communication system according to Embodiment 1 of the present invention;

8 is another schematic diagram of synchronization channel transmission in a multi-antenna communication system according to Embodiment 1 of the present invention;

9 is another schematic diagram of synchronization channel transmission in a multi-antenna communication system according to Embodiment 1 of the present invention;

FIG. 10 is a schematic diagram of a method for transmitting a synchronization signal according to Embodiment 2 of the present invention; FIG.

Figure 11 is a schematic diagram of a synchronization signal transmission apparatus according to Embodiment 3 of the present invention;

FIG. 12 is a schematic diagram showing the structure of a base station according to Embodiment 3 of the present invention; FIG.

Figure 13 is a schematic diagram of a synchronization signal transmission apparatus according to Embodiment 4 of the present invention;

FIG. 14 is a schematic structural diagram of a user equipment according to Embodiment 4 of the present invention; FIG.

Figure 15 is a diagram showing a multi-antenna communication system according to a fifth embodiment of the present invention.

detailed description

The foregoing and other features of the present invention will be apparent from the The specific embodiments of the present invention are disclosed in the specification and the drawings, which are illustrated in the embodiment of the invention The invention includes all modifications, variations and equivalents falling within the scope of the appended claims.

In the present application, a base station may be referred to as an access point, a broadcast transmitter, a Node B, an evolved Node B (eNB), etc., and may include some or all of their functions. The term "base station" will be used herein. Each base station provides communication coverage for a particular geographic area. The term "cell" can refer to a base station and/or its coverage area, depending on the context in which the term is used.

In this application, a mobile station or device may be referred to as a "User Equipment" (UE). A UE may be fixed or mobile and may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, and the like. The UE may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, and the like.

The following is an example in which a base station in a multi-antenna communication system is used as a transmitting end and a user equipment is used as a receiving end. However, the present invention is not limited thereto. For example, the transmitting end and/or the receiving end may be other network devices.

Example 1

The embodiment of the invention provides a method for transmitting a synchronization signal, which is described from the transmitting end of the multi-antenna system.

FIG. 5 is a schematic diagram of a method for transmitting a synchronization signal according to an embodiment of the present invention. As shown in FIG. 5, the transmission method includes:

Step 501: The transmitting end periodically transmits synchronization channel information on one or more beams formed by multiple antennas. The different beams have different beam identifiers, and the synchronization channels on different beams occupy different time domain resources and / or frequency resources.

In this embodiment, the transmitting end may be a macro base station (for example, an eNB), and the receiving end is a user equipment; the macro is A macro cell (e.g., a Macro cell) generated by the base station can provide services for the user equipment. Alternatively, the transmitting end may be a micro base station, the receiving end is a user equipment, or any device capable of receiving a base station signal; a micro cell generated by the micro base station (for example, a Pico cell) may provide services for the user equipment. Alternatively, the sender and/or the receiver may also be other network devices. The present invention is not limited thereto, and a specific scenario can be determined according to actual needs.

In this embodiment, the synchronization channel may be transmitted on each beam, and may be in a time sharing manner and/or a frequency division manner. When transmitting in a time-sharing manner, the synchronization channels on different beams may occupy different time slots for periodic transmission. When the frequency division mode is used, the synchronization channels on different beams may occupy different frequency resources for periodic transmission; or Combining time division and frequency division, the synchronization channels on different beams can occupy different time slots and frequency resources for periodic transmission.

In this embodiment, the beam formed by the multi-antenna technology can reach a far range due to power concentration. Since the synchronization channel is transmitted on the beam, the synchronization channel can cover a far range, and the synchronization can be solved in the existing communication standard. The problem of insufficient channel coverage; in addition, since the transmission method of time division and/or frequency division is adopted, the problem that the synchronization channels on different beams interfere with each other can be avoided.

In this embodiment, for a certain beam, the synchronization channel may carry cell identification information and beam identification information. That is, the synchronization channel may carry a beam identifier (Beam ID) in addition to the cell ID (Cell ID) of the physical layer. Specifically, for example, the cell identifier and the beam identifier may adopt a single unified identifier, that is, the beam identifier may be merged into the cell identifier; or the cell identifier and the beam identifier may also be two independent identifiers.

Further, the beam identification information can represent one or more beam identifications, including the analog beam identification and/or the digital beam identification. For example, the synchronization channel can carry two beam identifiers, one of which is an analog beam identifier and the other is a digital beam identifier.

Since the synchronization channel carries the cell identifier and the beam identifier, the receiving end can obtain the Cell ID and the Beam ID when performing system synchronization, thereby facilitating subsequent detection and decoding of the control channel and the data channel based on the beam transmission; Beam-based switching and tracking, etc. In the existing communication standard, the synchronization channel does not carry the information of the Beam ID, and other means are needed to obtain this information, and the subsequent beam-based operation can be performed normally.

The above is a schematic description of the synchronization channel transmitting on the beam and the synchronization channel carrying the beam identification. The following describes how to transmit the beam identification information in the synchronization channel.

In this embodiment, the cell identification information and the beam identification information may be independently used by different time-frequency resources. transmission. The group identification information in the cell identification information is carried by a certain sequence of the SSS (for example, a certain m sequence), and the intra-group identification information in the cell identification information is carried by a certain sequence of the PSS (for example, a certain ZC sequence). The beam identification information is carried by a certain sequence different from a certain sequence of the PSS and a certain sequence of the SSS (for example, a certain ZC sequence, the ZC sequence is different from the sequence corresponding to the PSS and the sequence corresponding to the SSS) .

Specifically, the cell identification information may occupy one or two symbols in the time domain and occupy multiple resource units in the frequency domain. The beam identification information may occupy one symbol different from the symbol occupied by the cell identification information in the time domain, and/or occupy a plurality of resource units different from the resource unit occupied by the cell identification information in the frequency domain.

For example, in one embodiment, the synchronization channel carrying the Cell ID and the Beam ID may adopt a time division multiplexing method, that is, the information of the Cell ID is transmitted by one or two symbols, and the information of the Beam ID is transmitted by another symbol.

6 is a schematic diagram of synchronization channel transmission in a multi-antenna communication system according to an embodiment of the present invention. As shown in FIG. 6, in a radio frame of X milliseconds (ms), a synchronization channel is transmitted in cycles of n subframes, each of which is a sub-frame. A frame contains one or more time intervals. In a time interval, the synchronization channel occupies three symbols, wherein the Cell ID occupies the mth symbol, the SSS and the PSS occupy the m+1th and the m+2th symbols, respectively, or the PSS and the SSS occupy the m+1th, respectively. And m+2 symbols; how to implement it may depend on the configuration of Time Division Duplex (TDD) or Frequency Division Duplex (FDD).

In the frequency domain, these channel information occupy R resource units (for example, RBs). When, for example, the same system parameters as LTE are used, PSS, SSS, and Beam ID can be transmitted using 6 PRBs, and PSS and SSS can use ZC sequence and m sequence, respectively, and signal sequence representing Beam ID can use ZC. The sequence or other sequence makes it minimally correlated with PSS and SSS.

It should be noted that FIG. 6 only schematically shows the synchronization channel of the present invention, but the present invention is not limited thereto. For example, the symbols occupied by the Beam ID and the PSS and the SSS are not necessarily adjacent, and may also be in the time interval. Other symbols; in addition, it is not necessary to use 6 PRBs for transmission in the frequency domain, and even different RBs may be used. The specific implementation method can be determined according to the actual situation.

In this embodiment, when detecting the synchronization signal, the user equipment as the receiving end may detect whether there is a PSS and an SSS representing a cell identifier of the physical layer, and then detect an agreed resource on another symbol of the agreed transmission Bear ID (for example, it may be The same RB as PSS and SSS can also be a different RB than PSS and SSS) Beam ID on. Thus, when the receiving end synchronization is completed, the Cell ID and the Beam ID can be obtained.

For example, in another embodiment, the synchronization channel carrying the Cell ID and the Beam ID may adopt a frequency division multiplexing method, that is, the information of the Cell ID is transmitted by one set of frequency resources, and the information of the Beam ID is on another set of frequency resources. transmission.

7 is another schematic diagram of synchronization channel transmission in a multi-antenna communication system according to an embodiment of the present invention. As shown in FIG. 7, PSS and SSS may adopt a design similar to LTE, occupying one symbol in the time domain, and The same number of frequency resources are occupied in the frequency domain. On a different set of frequency resources of the same symbol as the PSS, another set of available sequences different from any one of the PSS/SSS sequences may be used for transmitting the Beam ID; or on a different set of frequency resources of the same symbol as the SSS, An additional set of available sequences different from any one of the PSS/SSS sequences is used for transmitting the Beam ID.

It should be noted that FIG. 7 only schematically shows the synchronization channel of the present invention, but the present invention is not limited thereto. For example, in the time domain, the Beam ID can occupy the same symbol as the PSS, and can also occupy the same symbol as the SSS. In addition, it is not necessary to use 6 PRBs for transmission in the frequency domain. The specific implementation method can be determined according to the actual situation.

In this embodiment, the sequences corresponding to different Beam IDs may be different offsets of the same sequence. Specifically, the sequence offset corresponding to the Beam ID may be related to the frequency resource location occupied by the Beam ID. For example, the sequence Seq _M used by the Beam ID corresponding to the Beam X is the M-bit offset of the original predefined sequence Seq ₀ , and the Beam ID is transmitted at a frequency position deviating from the position of the frequency resource occupied by the PSS/SSS, and M and N are Predefined relationship.

In the present embodiment, it is also possible to perform time-sharing transmission in consideration of the transmission power limitation. That is, the beam identification information of different beams occupies different time domain resources and different frequency domain resources; and the cell identification information of different beams occupies different time domain resources and the same frequency domain resources.

8 is another schematic diagram of synchronization channel transmission in a multi-antenna communication system according to an embodiment of the present invention. As shown in FIG. 8, the Beam IDs of Beam 1 and Beam 2 are in different time slots (T1 and T2, respectively) and different. The frequency resource locations (F1 and F2, respectively) are transmitted, but the PSS/SSS of Beam 1 and Beam 2 are transmitted in different time slots (T1 and T2, respectively) and the same frequency resource location (F0).

It should be noted that FIG. 8 schematically illustrates the synchronization channel of the present invention by taking only two beams as an example, but the present invention is not limited thereto, and a specific implementation manner may be determined according to actual conditions.

In this embodiment, the user equipment as the receiving end can follow the PSS/SSS when performing the synchronization operation. Allows the possible sequence of transmission to be detected. After detecting the PSS/SSS, the Bear ID detection is performed according to the predefined Beam ID sequence at each of the predefined possible frequency offset positions, so that the Cell ID and the obtained ID can be obtained after the synchronization is completed. Beam ID for subsequent control channel and data channel transmission.

In this embodiment, the cell identification information and the beam identification information may also be jointly transmitted using the same time-frequency resource. Specifically, the beam identification information and the group identification information in the cell identification information may be carried by a certain sequence of the SSS; and/or, the beam identification information and the intra-group identification information in the cell identification information are carried by a certain sequence of the PSS. .

For example, in another embodiment, the synchronization channel carrying the Cell ID and the Beam ID may employ a joint transmission method. Since the length of the ZC sequence used to transmit the PSS in the LTE standard is 62, occupying 6 PRBs; therefore, the present invention can increase the length of the ZC sequence and expand the number of occupied physical resources, so that more ZC sequences with better orthogonality can be found, such that each A ZC sequence after increasing the length can represent an intra-group identifier

A combination with a Beam ID. Accordingly, the sequence length for the SSS and the number of occupied resources are expanded on another symbol such that it occupies the same number of resources as the PSS/Beam ID.

9 is another schematic diagram of synchronization channel transmission in a multi-antenna communication system according to an embodiment of the present invention. As shown in FIG. 9, a longer sequence may be selected to jointly transmit a Beam ID and a PSS, and the SSS separately occupies another symbol transmission; And/or, a longer sequence can be selected to jointly send the Beam ID and the SSS, and the PSS separately occupies another symbol to send.

It should be noted that FIG. 9 only schematically shows the synchronization channel of the present invention, but the present invention is not limited thereto. For example, the Beam ID may be combined with the PSS to adopt a certain sequence, or may be combined with the SSS to adopt a certain sequence, or with the PSS. And SSS are combined; in addition, more PRBs can be transmitted in the frequency domain. The specific implementation method can be determined according to the actual situation.

In this embodiment, when the user equipment as the receiving end performs the synchronization operation, the user equipment may perform detection according to the possible sequence of PSS/SSS transmission, and jointly detect the PSS and the Beam ID from the sequence corresponding to the PSS, and/or from the SSS. The SSS and the Beam ID are jointly detected in the corresponding sequence, so that the Cell ID and the Beam ID can be obtained after the synchronization is completed, so as to transmit the subsequent control channel and the data channel.

It can be seen from the foregoing embodiments that the synchronization channel information is transmitted on one or more beams, so that the synchronization channel covers a far range, and the problem of insufficient coverage of the synchronization channel in the existing communication standard is solved; in addition, synchronization on different beams is performed. The channel occupies different time domain resources and/or frequency resources, which can avoid the problem that the synchronization channels on different beams interfere with each other.

Example 2

The embodiment of the present invention provides a method for transmitting a synchronization signal, which is described from the receiving end of the multi-antenna system, and the same content as that of Embodiment 1 will not be described again.

FIG. 10 is a schematic diagram of a method for transmitting a synchronization signal according to an embodiment of the present invention. As shown in FIG. 10, the transmission method includes:

Step 1001: The receiving end detects synchronization channel information that is periodically sent by the sending end on one or more beams. The different beams have different beam identifiers, and the synchronization channels on different beams occupy different time domain resources and/or frequencies. Resources.

In this embodiment, the synchronization channel may carry cell identification information and beam identification information.

In this embodiment, the cell identification information and the beam identification information may be independently transmitted by using different time-frequency resources; the receiving end may separately detect the cell identification information and the beam identification information.

The group identification information in the cell identification information may be carried by a certain sequence of the SSS, and the intra-group identification information in the cell identification information may be carried by a certain sequence of the PSS. The beam identification information may be carried by a sequence different from a certain sequence of the PSS and a certain sequence of the SSS.

For example, the sequence corresponding to the beam identification information of different beams may be a different offset of a certain sequence.

In an embodiment, the cell identification information may occupy one or two symbols in the time domain, and occupy multiple resource units in the frequency domain; the beam identification information occupies one different time in the time domain from the symbol occupied by the cell identification information. The symbol occupies the same resource unit in the frequency domain as the resource unit occupied by the cell identification information.

In another embodiment, the cell identification information may occupy one or two symbols in the time domain and occupy multiple resource units in the frequency domain; the beam identification information occupies the same symbol as the cell identifier information in the time domain. A symbol occupying a plurality of resource units different from resource elements occupied by cell identification information in the frequency domain.

In another embodiment, the cell identification information may occupy one or two symbols in the time domain and occupy multiple resource units in the frequency domain; the beam identification information occupies different time in the time domain than the symbol occupied by the cell identification information. A symbol occupying a plurality of resource units different from resource elements occupied by cell identification information in the frequency domain.

For example, the beam identification information of different beams may occupy different time domain resources and different frequency domain resources; and the cell identification information of different beams may occupy different time domain resources and the same frequency domain resources.

In this embodiment, the cell identification information and the beam identification information may also be jointly transmitted by using the same time-frequency resource; the receiving end jointly detects the cell identification information and the beam identification information.

The group identification information in the beam identification information and the cell identification information may be carried by a certain sequence of the SSS; and/or the intra-group identification information in the beam identification information and the cell identification information may be carried by a certain sequence of the PSS. .

Example 3

The embodiment of the present invention provides a synchronization signal transmission apparatus, which is configured in a transmission end of a multi-antenna system. The embodiment of the present invention corresponds to the transmission method of Embodiment 1, and the same content is not described herein again.

FIG. 11 is a schematic diagram of a synchronization signal transmission apparatus according to an embodiment of the present invention. As shown in FIG. 11, the synchronization signal transmission apparatus 1100 includes:

Transmitting unit 1101, which periodically transmits synchronization channel information on one or more beams formed by multiple antennas; wherein different beams have different beam identifications, and synchronization channels on different beams occupy different time domain resources and / or frequency resources.

In this embodiment, the synchronization channel may carry cell identification information and beam identification information. The beam identification information may represent one or more beam identifiers, and the beam identifier includes an analog beam identifier and/or a digital beam identifier.

In this embodiment, the cell identification information and the beam identification information may be independently transmitted using different time-frequency resources. The group identification information in the cell identification information may be carried by a certain sequence of the SSS, and the intra-group identification information in the cell identification information may be carried by a certain sequence of the PSS; the beam identification information may pass through a sequence with the PSS. A sequence that is different from a certain sequence of SSS is carried.

In another embodiment, the cell identification information may occupy one or two symbols in the time domain and occupy multiple resource units in the frequency domain; the beam identification information occupies the same symbol as the cell identification information in the time domain. One symbol that occupies a plurality of resource units different from the resource unit occupied by the cell identification information in the frequency domain.

In this embodiment, the cell identification information and the beam identification information may also be jointly transmitted using the same time-frequency resource. The group identification information in the beam identification information and the cell identification information may be carried by a certain sequence of the SSS; and/or the intra-group identification information in the beam identification information and the cell identification information may be carried by a certain sequence of the PSS. .

The embodiment of the present invention further provides a transmitting end, which may be, for example, a base station, but the present invention is not limited thereto, and may be other network devices. The following takes a base station as an example for description.

FIG. 12 is a schematic diagram showing the structure of a base station according to an embodiment of the present invention. As shown in FIG. 12, base station 1200 can include a central processing unit (CPU) 200 and memory 210; and memory 210 is coupled to central processing unit 200. The memory 210 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 200.

The transmission device 1100 of the synchronization signal can implement the transmission method of the synchronization signal as described in Embodiment 1. The central processing unit 200 can be configured to implement the functions of the transmission device 1100 of the synchronization signal.

For example, central processor 200 can be configured to perform control of periodically transmitting synchronization channel information over one or more beams formed by multiple antennas; wherein different beams have different beam identifications and are on different beams The synchronization channel occupies different time domain resources and/or frequency resources.

In addition, as shown in FIG. 12, the base station 1200 may further include: a transceiver 220, an antenna 230, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and details are not described herein again. It should be noted that the base station 1200 does not have to include all the components shown in FIG. 12; in addition, the base station 1200 may further include components not shown in FIG. 12, and reference may be made to the prior art.

Example 4

The embodiment of the present invention provides a synchronization signal transmission apparatus, which is configured in a receiving end of a multi-antenna system, and the embodiment of the present invention corresponds to the transmission method of Embodiment 2, and the same content is not described herein again.

FIG. 13 is a schematic diagram of a synchronization signal transmission apparatus according to an embodiment of the present invention. As shown in FIG. 13, the synchronization signal transmission apparatus 1300 includes:

The detecting unit 1301 detects synchronization channel information periodically sent by the transmitting end on one or more beams; wherein different beams have different beam identifiers, and the synchronization channels on different beams occupy different time domain resources and/or frequencies Resources.

In this embodiment, the cell identification information and the beam identification information may be independently transmitted by using different time-frequency resources; the detecting unit 1301 may separately detect the cell identification information and the beam identification information.

In this embodiment, the cell identification information and the beam identification information may also be jointly transmitted using the same time-frequency resource; the detecting unit 1301 may jointly detect the cell identification information and the beam identification information.

The embodiment of the present invention further provides a receiving end, which may be, for example, a user equipment, but the present invention is not limited thereto, and may be other network devices. The following uses the user equipment as an example for description.

FIG. 14 is a schematic diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 14, the user device 1400 can include a central processing unit 100 and a memory 140; the memory 140 is coupled to the central processing unit 100. It should be noted that the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.

In one embodiment, the functionality of the synchronization signal transmission device 1300 can be integrated into the central processor 100. The central processing unit 100 may be configured to implement the transmission method of the synchronization signal described in Embodiment 2.

For example, the central processing unit 100 can be configured to perform control of detecting synchronization channel information periodically transmitted by the transmitting end on one or more beams; wherein different beams have different beam identifications, and synchronization channels on different beams Occupy different time domain resources and/or frequency resources.

In another embodiment, the synchronization signal transmission device 1300 can be configured separately from the central processing unit 100. For example, the synchronization signal transmission device 1300 can be configured as a chip connected to the central processing unit 100, and controlled by the central processing unit 100. The function of the transmission device 1300 that implements the synchronization signal.

As shown in FIG. 14, the user equipment 1400 may further include: a communication module 110, an input unit 120, a display 160, and a power source 170. The functions of the above components are similar to those of the prior art, and are not described herein again. It should be noted that the user equipment 1400 does not have to include all the components shown in FIG. 14, and the above components are not required; in addition, the user equipment 1400 may further include components not shown in FIG. There are technologies.

Example 5

The embodiment of the present invention further provides a multi-antenna communication system, and the same contents as those of Embodiments 1 to 4 are not described herein again.

In this embodiment, the multi-antenna communication system may include:

a transmitting end, which is configured with a synchronization signal transmission device 1100 as described in Embodiment 3;

The receiving end is configured with a transmission device 1300 of the synchronization signal as described in Embodiment 4.

15 is a schematic diagram of a multi-antenna communication system according to an embodiment of the present invention, schematically illustrating a case where a transmitting end is a base station and a receiving end is a user equipment. As shown in FIG. 15, the multi-antenna communication system 1500 may include a base station 1501. And user equipment 1502. The base station 1501 is provided with a synchronization signal transmission apparatus 1100 as described in the third embodiment, and the user equipment 1502 is provided with the synchronization signal transmission apparatus 1300 as described in the fourth embodiment.

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a transmitting end, the program causes the transmitting end to execute the transmission method of the synchronization signal described in Embodiment 1.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a transmitting end to execute the transmission method of the synchronization signal described in Embodiment 1.

The embodiment of the present invention further provides a computer readable program, wherein the program causes the receiving end to execute the transmission method of the synchronization signal described in Embodiment 2 when the program is executed in the receiving end.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a receiving end to execute the transmission method of the synchronization signal described in Embodiment 2.

The above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software. The present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

The transmission method of the synchronization signal described in connection with the embodiment of the present invention may be directly embodied as hardware, a software module executed by the processor, or a combination of both. For example, one or more of the functional block diagrams shown in FIG. 11 and/or one or more combinations of functional block diagrams (eg, transmitting units, etc.) may correspond to individual software modules of a computer program flow, or may correspond to For each hardware module. These software modules may correspond to the respective steps shown in FIG. 5, respectively. These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).

The software module can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage known in the art. Storage medium. A storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor. The processor and the storage medium can be located in an ASIC. The software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if a device (such as a mobile terminal) uses a larger capacity MEGA-SIM card or a large-capacity flash memory device, the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.

One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein. An application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof. One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that A person skilled in the art can make various modifications and changes to the present invention within the scope of the present invention.

Claims

A transmission device for synchronizing signals is disposed at a transmitting end of a multi-antenna system, the transmission device comprising:

a transmitting unit that periodically transmits synchronization channel information on one or more beams formed by multiple antennas;

The different beams have different beam identifiers, and the synchronization channels on different beams occupy different time domain resources and/or frequency resources.
The transmission device according to claim 1, wherein the synchronization channel carries cell identification information and beam identification information.
The transmission device of claim 2, wherein the beam identification information represents one or more of the beam identifications, the beam identification comprising an analog beam identification and/or a digital beam identification.
The transmission device according to claim 2, wherein said cell identification information and said beam identification information are independently transmitted using different time-frequency resources.
The transmission device according to claim 4, wherein the group identification information in the cell identification information is carried by a certain sequence of the secondary synchronization signal, and the intra-group identification information in the cell identification information passes through a certain primary synchronization signal. a sequence is carried;

The beam identification information is carried by a certain sequence different from a certain sequence of the primary synchronization signal and a certain sequence of the secondary synchronization signal.
The transmission device according to claim 4, wherein the sequence corresponding to the beam identification information of the different beams is a different offset of a certain sequence.
The transmission device according to claim 4, wherein the cell identification information occupies one or two symbols in a time domain and occupies a plurality of resource units in a frequency domain;

The beam identification information occupies one symbol different from the symbol occupied by the cell identification information in the time domain, and/or occupies multiple resources different from the resource unit occupied by the cell identification information in the frequency domain. unit.
The transmission device according to claim 4, wherein the beam identification information of different beams occupies different time domain resources and different frequency domain resources; and the cell identification information of different beams occupies different time domain resources and the same frequency domain resources. .
The transmission device according to claim 2, wherein said cell identification information and said beam identification information are jointly transmitted using the same time-frequency resource.
The transmission device according to claim 9, wherein the beam identification information and the group identification information in the cell identification information are carried by a certain sequence of secondary synchronization signals; and/or,

The beam identification information and the intra-group identification information in the cell identification information are carried by a certain sequence of the primary synchronization signal.
A transmission device for synchronizing signals is disposed at a receiving end of a multi-antenna system, the transmission device comprising:

a detecting unit, which detects synchronization channel information periodically sent by the transmitting end on one or more beams;

The different beams have different beam identifiers, and the synchronization channels on different beams occupy different time domain resources and/or frequency resources.
The transmission device according to claim 11, wherein the synchronization channel carries cell identification information and beam identification information.
The transmission device according to claim 12, wherein the cell identification information and the beam identification information are independently transmitted using different time-frequency resources;

The detecting unit respectively detects the cell identification information and the beam identification information.
The transmission device according to claim 13, wherein the group identification information in the cell identification information is carried by a certain sequence of the secondary synchronization signal, and the intra-group identification information in the cell identification information passes through a certain primary synchronization signal. a sequence is carried;

The beam identification information is carried by a certain sequence different from a certain sequence of the primary synchronization signal and a certain sequence of the secondary synchronization signal.
The transmission device according to claim 13, wherein the sequence corresponding to the beam identification information of the different beams is a different offset of a certain sequence.
The transmission device according to claim 13, wherein the cell identification information occupies one or two symbols in a time domain and occupies a plurality of resource units in a frequency domain;

The beam identification information occupies one symbol different from the symbol occupied by the cell identification information in the time domain, and/or occupies multiple resources different from the resource unit occupied by the cell identification information in the frequency domain. unit.
The transmission device according to claim 13, wherein the beam identification information of different beams occupies different time domain resources and different frequency domain resources; and the cell identification information of different beams occupies different time domain resources and the same frequency domain resources. .
The transmission device according to claim 12, wherein said cell identification information and said beam marker The information is jointly transmitted using the same time-frequency resources;

The detecting unit jointly detects the cell identification information and the beam identification information.
The transmission device according to claim 18, wherein said beam identification information and group identification information in said cell identification information are carried by a certain sequence of secondary synchronization signals; and/or,

The beam identification information and the intra-group identification information in the cell identification information are carried by a certain sequence of the primary synchronization signal.
A multi-antenna communication system, the multi-antenna communication system comprising:

a transmitting end configured with the synchronization signal transmission device according to claim 1;

A receiving end configured with the transmission device of the synchronization signal according to claim 11.