CN107124767B - Signal configuration method, information processing method and device - Google Patents
Signal configuration method, information processing method and device Download PDFInfo
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- CN107124767B CN107124767B CN201610105523.1A CN201610105523A CN107124767B CN 107124767 B CN107124767 B CN 107124767B CN 201610105523 A CN201610105523 A CN 201610105523A CN 107124767 B CN107124767 B CN 107124767B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
Abstract
The invention discloses a signal configuration method, an information processing method and a device, wherein a plurality of synchronization windows contained in a preset time period are selected to bear synchronization signals; configuring the broadcast channel according to a preset constraint relation between the synchronous signal and the broadcast channel; sending a configured signal according to a periodic trigger or an aperiodic trigger mode, wherein the configured signal comprises at least one of the following signals: synchronizing signals and broadcasting channels, and completing a complete signal transmission process within the preset time period. Each synchronization window comprises a plurality of continuous symbols, a plurality of subcarriers of each symbol bear synchronization signals, and the sending process of the synchronization signals is completed in the preset time period.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a signal configuration method, an information processing method, and an apparatus.
Background
With the large emergence of various radio service demands, 5G (fifth generation communication system) is proposed as a next generation communication system. The industry vision of 5G systems is that anyone (thing) can transmit any data at any place and time, and it can be expected that 5G will penetrate all aspects from production to life, providing a necessary technical basis for the transformation and revolution of industry and society. High frequency communication systems are an important branch of 5G communication systems due to their abundant frequency resources. The design of a high-frequency communication system (belonging to a 5G system) also needs to meet the above requirements, so in the aspect of system design, the high-frequency communication system needs to consider the support of different services in different scenes, and is different from the current 4G, that is, Long Term Evolution (LTE) communication system, and the simplicity, flexibility, expandability and energy saving are important principles for designing the high-frequency mobile communication system.
The configuration method of the downlink synchronization signal in the existing LTE system is sent according to a fixed period, the number of occupied symbols at the position of the synchronization signal in each period is fixed, and the synchronization signal is divided into a primary synchronization signal and a secondary synchronization signal, which are all contrary to the design principle of the high frequency system, so the configuration method of the synchronization signal of the LTE is not suitable for the high frequency system.
In the high-frequency communication system, although the frequency resources are rich, the high-frequency band has the defects of large free propagation loss, easy oxygen absorption, large influence by rain attenuation and the like, the coverage performance of the high-frequency communication system is seriously influenced, the symbol time of the high-frequency band is shortened, the transmitted energy is reduced, and the coverage capability of the system is further reduced. Therefore, the synchronization signal configuration method in the LTE system cannot meet the coverage requirement in the 5G, especially in the high frequency communication system, and a new configuration method of the synchronization signal needs to be designed.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a signal configuration method, an information processing method and an apparatus, which are flexible and variable in configuration mode and can meet the coverage requirement of a 5G communication system, especially a high frequency communication system.
In order to achieve the object, in a first aspect, an embodiment of the present invention provides a signal configuration method, including:
selecting a plurality of synchronization windows contained in a preset time period to carry synchronization signals;
each synchronization window comprises a plurality of continuous symbols, a plurality of subcarriers of each symbol bear synchronization signals, and the sending process of the synchronization signals is completed in the preset time period.
Further, the method further comprises:
configuring the broadcast channel according to a preset constraint relation between the synchronous signal and the broadcast channel;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
Further, the method further comprises:
sending a configured signal according to a periodic trigger or an aperiodic trigger mode, wherein the configured signal comprises at least one of the following signals: synchronizing signals and broadcasting channels, and completing a complete signal transmission process within the preset time period.
Further, the selecting a plurality of synchronization windows included in a preset time period to carry synchronization signals includes:
determining whether each synchronization window in a preset time period bears a synchronization signal or not by a sending end;
if the synchronous signal is carried in one synchronous window, carrying the synchronous signal at the same frequency domain position of all symbols included in the synchronous window;
if it is determined that the synchronization signal is not carried in one synchronization window, the synchronization signal is not carried on all symbols included in the synchronization window.
Further, the synchronization signal includes: ZC sequence or pseudo-noise PN sequence; within the same synchronization window, the sequence length on each symbol is consistent, and the sequences on different symbols are different.
Furthermore, the time domain positions of the synchronization windows are preset, the time domain positions of different synchronization windows are not overlapped in time, and the time domain positions of the synchronization windows do not conflict with the time domain positions of the channel or the reference symbol with fixed time domain positions.
Further, the number of consecutive symbols included in each synchronization window is denoted as p, and the value of p is a positive integer;
the values of p corresponding to the synchronization windows of different cells, the values of p corresponding to the synchronization windows of the same cell at different moments and the values of p corresponding to different synchronization windows are set in a unified manner or set independently, and the independently set p values are the same or different.
Further, each synchronization window includes the same frequency resources occupied by the respective symbols.
Furthermore, one broadcast channel corresponds to one broadcast window, and the frequency resources occupied by the symbols included in each broadcast window are the same.
Further, one synchronization window corresponds to one beam, and the beam is used for transmitting the synchronization signal of the corresponding synchronization window.
Further, the method further comprises:
when the configured signal includes a synchronization signal and a broadcast channel, the synchronization signal carried by the synchronization window and the broadcast channel carried by the broadcast window corresponding to the synchronization window are transmitted using the same beam.
In a second aspect, an embodiment of the present invention provides an information processing method, including:
receiving a synchronous signal, and determining the position of a broadcast channel according to the constraint relation between the synchronous signal and the broadcast channel;
acquiring a broadcast message according to the position of the broadcast channel;
according to the synchronous signal and the broadcast message, at least one of the following functions is completed: timing, detecting a cell identification ID and acquiring a system message;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
Further, the completing the timing according to the synchronization signal and the broadcast message includes:
acquiring the subframe number of a subframe corresponding to the broadcast message and the symbol index in the subframe through the synchronous signal or the broadcast message;
the completing cell Identification (ID) detection according to the synchronization signal and the broadcast message comprises: acquiring a cell ID through the synchronization signal or the broadcast message;
the completing system message acquisition according to the synchronization signal and the broadcast message comprises: and acquiring system information through the broadcast information.
In a third aspect, an embodiment of the present invention provides a signal configuration apparatus, including:
the first configuration module is used for selecting a plurality of synchronization windows contained in a preset time period to bear synchronization signals;
each synchronization window comprises a plurality of continuous symbols, a plurality of subcarriers of each symbol bear synchronization signals, and the sending process of the synchronization signals is completed in the preset time period.
Further, the apparatus further comprises:
the second configuration module is used for configuring the broadcast channel according to the preset constraint relation between the synchronous signal and the broadcast channel;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
Further, the apparatus further comprises:
a sending module, configured to send a configured signal according to a periodic trigger or an aperiodic trigger, where the configured signal includes at least one of: synchronizing signals and broadcasting channels, and completing a complete signal transmission process within the preset time period.
Further, the synchronization signal includes: ZC sequence or pseudo-noise PN sequence; within the same synchronization window, the sequence length on each symbol is consistent, and the sequences on different symbols are different.
Furthermore, the time domain positions of the synchronization windows are preset, the time domain positions of different synchronization windows are not overlapped in time, and the time domain positions of the synchronization windows do not conflict with the time domain positions of the channel or the reference symbol with fixed time domain positions.
Further, the sending module is specifically configured to:
when the configured signal includes a synchronization signal and a broadcast channel, the synchronization signal carried by the synchronization window and the broadcast channel carried by the broadcast window corresponding to the synchronization window are transmitted using the same beam.
In a fourth aspect, an embodiment of the present invention provides an information processing apparatus, including:
the receiving module is used for receiving the synchronous signal and determining the position of the broadcast channel according to the constraint relation between the synchronous signal and the broadcast channel;
the acquisition module is used for acquiring the broadcast message according to the position of the broadcast channel;
a processing module, configured to perform at least one of the following functions according to the synchronization signal and the broadcast message: timing, detecting a cell identification ID and acquiring a system message;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
Further, the processing module is specifically configured to:
acquiring the subframe number of a subframe corresponding to the broadcast message and the symbol index in the subframe through the synchronous signal or the broadcast message;
acquiring a cell ID through the synchronization signal or the broadcast message;
and acquiring system information through the broadcast information.
An embodiment of the present invention provides a computer storage medium, where computer-executable instructions are stored in the computer storage medium, and the computer-executable instructions are used to execute the signal configuration method provided in the first aspect of the present invention or the information processing method provided in the second aspect of the present invention.
The signal configuration method, the information processing method and the device provided by the embodiment of the invention select a plurality of synchronization windows contained in a preset time period to bear the synchronization signals; configuring the broadcast channel according to a preset constraint relation between the synchronous signal and the broadcast channel; sending a configured signal according to a periodic trigger or an aperiodic trigger mode, wherein the configured signal comprises at least one of the following signals: synchronizing signals and broadcasting channels, and completing a complete signal transmission process within the preset time period. Each synchronization window comprises a plurality of continuous symbols, a plurality of subcarriers of each symbol bear synchronization signals, and the sending process of the synchronization signals is completed in the preset time period. According to the technical scheme provided by the invention, the signal and channel configuration modes are flexible and variable, and the coverage requirements of a 5G communication system, especially a high-frequency communication system, can be met.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a first schematic flow chart of a signal configuration method according to an embodiment of the present invention;
fig. 2 is a second schematic flowchart of a signal configuration method according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating an information processing method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a periodic transmission signal in embodiment 1 according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a transmission signal when a non-periodic trigger is performed in embodiment 1 according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a periodic transmission signal in embodiment 2 according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a periodic transmission signal in embodiment 3 according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a periodic transmission signal in embodiment 4 according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a transmission signal when a non-periodic cycle is triggered in embodiment 5 according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a signal configuration apparatus according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a signal processing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
An embodiment of the present invention provides a signal configuration method, based on a transmitting side, as shown in fig. 1, the method includes:
each synchronization window comprises a plurality of continuous symbols, a plurality of subcarriers of each symbol bear synchronization signals, and the sending process of the synchronization signals is completed in the preset time period.
Further, as shown in fig. 2, the method may further include:
102, configuring a broadcast channel according to a preset constraint relation between a synchronous signal and the broadcast channel;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
Further, as shown in fig. 2, the method may further include:
Further, step 101 may specifically include:
determining whether each synchronization window in a preset time period bears a synchronization signal or not by a sending end;
if the synchronous signal is carried in one synchronous window, carrying the synchronous signal at the same frequency domain position of all symbols included in the synchronous window;
if it is determined that the synchronization signal is not carried in one synchronization window, the synchronization signal is not carried on all symbols included in the synchronization window.
Further, the synchronization signal includes: ZC sequence or pseudo-noise PN sequence; in the same synchronization window, the sequence length on each symbol is consistent, and the sequences on different symbols are different; the sequences employed by the different synchronization windows may be set to be the same or different as desired.
Furthermore, the time domain positions of the synchronization windows are preset, the time domain positions of different synchronization windows are not overlapped in time, and the time domain positions of the synchronization windows do not conflict with the time domain positions of the channel or the reference symbol with fixed time domain positions.
Further, the number of consecutive symbols included in each synchronization window is denoted as p, and the value of p is a positive integer; the values of p corresponding to the synchronization windows of different cells, the values of p corresponding to the synchronization windows of the same cell at different moments and the values of p corresponding to different synchronization windows are set in a unified manner or set independently, and the independently set p values are the same or different.
Further, each synchronization window includes the same frequency resources occupied by the respective symbols.
Furthermore, one broadcast channel corresponds to one broadcast window, and the frequency resources occupied by the symbols included in each broadcast window are the same.
Further, one synchronization window corresponds to one beam, and the beam is used for transmitting the synchronization signal of the corresponding synchronization window.
Further, as shown in fig. 2, the method may further include:
and 104, when the configured signal comprises a synchronization signal and a broadcast channel, transmitting the synchronization signal carried by the synchronization window and the broadcast channel carried by the broadcast window corresponding to the synchronization window by using the same beam.
According to the signal configuration method provided by the embodiment of the invention, the configuration modes of the synchronous signal and the broadcast channel are flexible and variable, and the coverage requirements of a 5G communication system, especially a high-frequency communication system, can be met.
An embodiment of the present invention further provides an information processing method, based on a receiving side, as shown in fig. 3, the method includes:
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
Further, step 203 may specifically include:
acquiring the subframe number of a subframe corresponding to the broadcast message and the symbol index in the subframe through the synchronous signal or the broadcast message;
acquiring a cell ID through the synchronization signal or the broadcast message;
and acquiring system information through the broadcast information.
Compared with the prior art, in the information processing method provided by the embodiment of the invention, the position of the broadcast channel can be determined by using the synchronization signal so as to acquire the broadcast message, and the functions of timing, cell ID detection, system information acquisition and the like can be completed according to the synchronization signal and the broadcast message.
In order to make the technical solutions provided by the present invention more clearly understood by those skilled in the art, the technical solutions provided by the present invention are described in detail below by specific examples:
example 1
A preset time period corresponds to a complete signal (including at least one of a synchronous signal and a broadcast channel) transmission process, a total of N synchronous windows and N broadcast windows are assumed, each synchronous window corresponds to a unique broadcast window, each synchronous window corresponds to 1 wave beam, and different wave beams are used for transmitting the synchronous signal/the broadcast channel in different synchronous windows/broadcast windows.
The transmitting end (e.g. base station) determines the number p of consecutive symbols in each synchronization window according to the relevant information (factors such as the number of UEs, the location of the UE, and the channel condition of the scene where the base station is located), the number k of consecutive symbols in the broadcast window is in a one-to-one correspondence with p in terms of value, and the correspondence rule is known at the receiving end. The value of p can be informed to the receiving end by the base station through other ways, and can also be obtained by the receiving end through blind solution. It should be noted that the p values of different base stations may be different, the p values of the same base station in different periods may also be different, and the p values of the same base station in different synchronization windows in the same period may also be different. The sequences over p symbols within each synchronization window are not identical, but the sequences over different synchronization windows may be identical. All symbols on all synchronization windows and all symbols on all broadcast windows constitute a preset time period.
In order to increase flexibility and expandability of the system, the relevant design of the 5G high-frequency communication system also refers to the reasonable aspect of the design of the LTE system, for example, the sequence of the synchronization signal in LTE is placed on 72 subcarriers in the middle of the bandwidth, so that the system can flexibly support various bandwidth configurations.
In a period, whether each synchronization window sends a synchronization signal is determined by a sending end (such as a base station) according to related information, if a certain synchronization window determines that the synchronization signal needs to be sent in a transmission process, p symbols included in the synchronization window all need to send the synchronization signal, and k symbols included in a corresponding broadcast window all need to send a broadcast channel; if a synchronization window does not transmit a synchronization signal in a complete transmission process, the synchronization window comprises p symbols and the corresponding broadcast window comprises k symbols which do not transmit the synchronization signal and the broadcast channel. Unlike the LTE system in which the sequence of the synchronization signal includes a primary synchronization sequence and a secondary synchronization sequence, the present solution only has one sequence of the synchronization signal, although the present solution transmits the sequence of the synchronization signal over a plurality of symbols within one period, because the solution is set for increasing coverage and flexibility and corresponding to different beams, and the sequence of the synchronization signal of the present solution is essentially only equivalent to the primary synchronization sequence in the LTE system.
The relative positions of the synchronization window and the corresponding broadcast window are fixed, and in the examples given in fig. 4 and 5, the synchronization window and the corresponding broadcast window are adjacent. Therefore, by correctly receiving the sequence of the synchronization signal, the receiving end can acquire the position of the broadcast window corresponding to the synchronization window, and further can receive the broadcast channel to acquire the broadcast message. In the process of receiving the broadcast channel, the receiving end can perform channel estimation by using the sequence of the synchronization signal in the corresponding synchronization window to assist the receiving end in correctly receiving the broadcast information. At least one or several of the following information is contained in the broadcast message: 1) sending a frame number corresponding to the broadcast message; 2) sending a subframe number corresponding to the broadcast message; 3) transmitting a symbol index in a subframe corresponding to the broadcast message; 3) sending a frame number corresponding to the broadcast message; 4) the cell ID. Thus, combining the synchronization signal and the broadcast channel completes the functions of timing, cell ID detection, notification of system messages, and the like.
Example 2
As shown in fig. 6, a high-frequency independent network is taken as an example, and signals are periodically transmitted. Assuming that the signaling period is equal to the length of a radio frame, and includes M symbols, the coverage area of each base station is about 120 °. Assuming that the channel condition is relatively good in a certain time under such a scenario, the base station uses 4 wider beams to cover the whole cell. Within a signaling cycle, there are 4 synchronization windows, and corresponding 4 broadcast windows, which are located adjacent to the corresponding broadcast window. The receiving end of the number of symbols in the synchronization window needs to know by blind solution, but the receiving end of the mapping relation between the number of symbols in the synchronization window and the number of symbols in the broadcast window is known. In this embodiment, the synchronization window includes 2 symbols, and the number of symbols in the synchronization window corresponds to 2 times that of the broadcasting window, so that each broadcasting window includes 4 symbols. The frequency resources occupied by the synchronization window and the broadcast window are the same. A full preset time period contains 24 symbols (M is greater than or equal to 24).
In this embodiment, the synchronization signal and the broadcast channel are transmitted over all the synchronization windows and the broadcast windows.
In this embodiment, the position of the synchronization broadcast window in one period is determined, the positions of the synchronization broadcast windows in different periods are the same, and the receiving end knows the information. The sequences of the synchronization signals adopt sequences with better autocorrelation and cross-correlation performance, such as ZC (Zadoff-Chu) sequences or Pseudo-noise (PN) sequences, and the sequences of different symbols in the same synchronization window are different, and the sequences used by different synchronization windows in the same cell are different. The sequences of adjacent cells are not the same, but there is a repetition of the sequences of different cells within a region (in which case it is not possible to distinguish between cell IDs).
Since the position of the synchronization window is determined and the sequences of different synchronization windows are different, the receiving end can complete the frame timing by receiving the sequence of the synchronization signal. Through the timing relation or the position corresponding relation between the synchronization window and the broadcast window, the receiving end can receive the broadcast channel at the corresponding position, and in the receiving process, the receiving end can utilize the sequence of the synchronization signal to carry out channel estimation so as to assist the receiving of the broadcast channel and further acquire the broadcast message. The broadcast message includes a frame number, a cell ID, a system message, and the like.
Example 3
As shown in fig. 7, a high-frequency independent network is taken as an example, and signals are periodically transmitted. Assuming that the signaling period is equal to the length of a radio frame, and includes M symbols, the coverage area of each base station is about 120 °. Compared with embodiment 2, it is assumed that the channel condition is relatively poor in this scenario for a certain time, and therefore the base station uses 6 narrower beams to cover the whole cell. Within a signaling cycle, there are 6 synchronization windows and corresponding 6 broadcast windows, where the synchronization windows and the corresponding broadcast windows are located adjacent to each other. The receiving end of the number of symbols in the synchronization window needs to know by blind solution, but the receiving end of the mapping relation between the number of symbols in the synchronization window and the number of symbols in the broadcast window is known. In this embodiment, the synchronization window includes 4 symbols, and the number of symbols in the synchronization window corresponds to 1 time the number of symbols in the broadcast window, so that each broadcast window includes 4 symbols. The frequency resources occupied by the synchronization window and the broadcast window are the same. A complete preset time period contains 48 symbols (M is equal to or greater than 48).
The transmitting end (e.g., base station) may determine whether each synchronization window and broadcast window needs to transmit a synchronization signal and a broadcast channel, if necessary, but whether each synchronization window and its corresponding broadcast window transmit a message are consistent. In this embodiment, the synchronization broadcast window 5 in the previous period and the synchronization broadcast window 1 in the next period do not transmit the synchronization signal and the broadcast channel, that is, the synchronization signal and the broadcast channel are not transmitted on the beam 5 in the previous period and the beam 1 in the next period. But the position of the respective synchronization window and broadcast window remains unchanged. Other data can be transmitted on the time frequency resources corresponding to the former synchronization window and broadcast window 5 and the latter synchronization window and broadcast window 2.
In this embodiment, the positions of the synchronization window and the broadcast window in one period are determined, and the positions of the synchronization window and the broadcast window in different periods are the same. The sequences of the synchronization signals adopt sequences with better self-correlation and cross-correlation performance, the sequences of different symbols in the same synchronization window are different, and the sequences used by different synchronization windows in the same cell are the same. The sequences of different cells within a region are different (in which case the cell IDs can be distinguished).
Since the sequences of different synchronization windows are the same, the receiving end cannot complete frame timing by receiving the sequence of the synchronization signal, but since the sequences used by the respective cells are different, the receiving synchronization sequence can identify the cell ID. Through the position corresponding relation between the synchronization window and the broadcast window, the receiving end can receive the broadcast channel at the corresponding position to further acquire the broadcast message, and in the receiving process, the receiving end can utilize the sequence of the synchronization signal to carry out channel estimation so as to assist in receiving the broadcast channel. The broadcast message includes a frame number, a subframe number, a symbol index in a subframe, a system message, and the like.
Example 4
As shown in fig. 8, a high-frequency independent network is taken as an example, and signals are periodically transmitted. Assuming that the signaling period is equal to the length of a radio frame, and includes M symbols, the coverage area of each base station is about 120 °. Compared with embodiment 2, it is assumed that the channel condition is relatively poor in this scenario for a certain time, and therefore the base station uses 6 narrower beams to cover the whole cell. Within a signaling cycle, there are 6 synchronization windows and corresponding 6 broadcast windows, where the synchronization windows and the corresponding broadcast windows are located adjacent to each other. The receiving end of the number of symbols in the synchronization window needs to know by blind solution, but the receiving end of the mapping relation between the number of symbols in the synchronization window and the number of symbols in the broadcast window is known. In this embodiment, the synchronization window includes 4 symbols, and the number of symbols in the synchronization window corresponds to 1 time the number of symbols in the broadcast window, so that each broadcast window includes 4 symbols. The frequency resources occupied by the synchronization window and the broadcast window are the same. A complete preset time period contains 48 symbols (M is equal to or greater than 48).
In this embodiment, the synchronization signal and the broadcast channel are transmitted in all the synchronization windows and the corresponding broadcast windows and through the corresponding beams.
In this embodiment, the positions of the synchronization window and the broadcast window in each period are uncertain, the positions of the synchronization window and the broadcast window in different periods may be different, and in each period, a transmitting end (e.g., a base station) may determine the position of the synchronization broadcast window as needed, as shown in fig. 5, the positions of the synchronization broadcast window in the previous and next periods are different. The sequences of the synchronization signals adopt sequences with better self-correlation and cross-correlation performance, the sequences of different symbols in the same synchronization window are different, and the sequences used by different synchronization windows in the same cell are the same. The sequences of adjacent cells are not the same, but there is a repetition of the sequences of different cells within a region (in which case it is not possible to distinguish between cell IDs).
Since the sequences of different synchronization windows are identical and the sequences used by each cell in a region are repeated, the receiving end cannot complete frame timing and cell ID detection by receiving the sequence of the synchronization signal. Therefore, through the position corresponding relation between the synchronization window and the broadcast window, the receiving end can receive the broadcast channel at the corresponding position, and in the receiving process, the receiving end can utilize the sequence of the synchronization signal to carry out channel estimation so as to assist the receiving of the broadcast channel and further obtain the broadcast message. The broadcast message includes a cell ID, a frame number, a subframe number, a symbol index in a subframe, a system message, and the like.
Example 5
Take high and low frequency mixed networking, non-periodically triggering and sending signals as an example.
In a scenario of high-frequency and low-frequency hybrid networking, a User Equipment (User Equipment UE) first accesses a low-frequency site, and the low-frequency site determines whether the User Equipment needs to access a high-frequency site. When no user equipment accesses the high-frequency station, the high-frequency station is in a silent state, that is, the high-frequency station does not send any information, but only periodically receives the information from the low-frequency station. At a certain moment, if user equipment needs to access a high-frequency site, the low-frequency site respectively notifies the UE to be accessed and the related information of the high-frequency site. And the high-frequency station transmits the synchronous signal and the broadcast channel according to the relevant information configuration parameters, and the UE needs to receive the synchronous signal and the broadcast channel of the high-frequency station and then accesses the high-frequency station.
The coverage area of each high frequency base station is approximately 120 deg., and the entire cell is covered with 6 narrower beams. There should generally be 6 synchronization windows, and corresponding 6 broadcast windows, the synchronization windows and corresponding broadcast windows being located adjacent to each other. As shown in fig. 9, in the scheme of the embodiment of the present invention, it is assumed that it is known from the low frequency base station that only the user equipment needs to receive the synchronization signal and the broadcast channel in the direction corresponding to the beams 1, 2, and 6 at this time, because the beams 1, 2, and 6 correspond to the synchronization windows/ broadcast windows 1, 2, and 6, at this time, the synchronization signal and the broadcast channel only need to be transmitted on 3 synchronization windows and their corresponding broadcast windows (the beams 1, 2, and 6 corresponding to them), the number of symbols in the synchronization windows is notified to the user equipment by the low frequency station, and the receiving end has a known mapping relationship between the number of symbols in the synchronization windows and the number of symbols in the broadcast windows. In this embodiment, the synchronization window includes 4 symbols, and the number of symbols in the synchronization window corresponds to 2 times that of the broadcasting window, so that each broadcasting window includes 8 symbols. The frequency resources occupied by the synchronization window and the broadcast window are the same. The synchronization signal and the broadcast channel sent by the aperiodic trigger occupy 36 symbols.
After the signal transmission is finished, whether to continue to transmit the signal subsequently is determined by the high-frequency station or notified to the high-frequency station by the low-frequency station.
The sequences of the synchronization signals adopt sequences with better self-correlation and cross-correlation performance, the sequences of different symbols in the same synchronization window are different, and the sequences used by different synchronization windows in the same cell are the same. The sequences of adjacent cells are not the same, but there is a repetition of the sequences of different cells within a region (in which case it is not possible to distinguish between cell IDs).
Since the sequences of different synchronization windows are identical and the sequences used by each cell in a region are repeated, the receiving end cannot complete frame timing and cell ID detection by receiving the sequence of the synchronization signal. Therefore, through the position corresponding relation between the synchronization window and the broadcast window, the receiving end can receive the broadcast channel at the corresponding position to further acquire the broadcast message, and in the receiving process, the receiving end can utilize the sequence of the synchronization signal to carry out channel estimation so as to assist in receiving the broadcast channel. The broadcast message includes a cell ID, a frame number, a subframe number, a symbol index in a subframe, a system message, and the like.
It should be noted that the above embodiments are not isolated, and can be referred to each other to illustrate the technical solution of the present invention.
An embodiment of the present invention provides a signal configuration apparatus 10, as shown in fig. 10, including:
a first configuration module 11, configured to select a plurality of synchronization windows included in a preset time period to carry a synchronization signal;
each synchronization window comprises a plurality of continuous symbols, a plurality of subcarriers of each symbol bear synchronization signals, and the sending process of the synchronization signals is completed in the preset time period.
Further, as shown in fig. 10, the apparatus 10 may further include:
a second configuration module 12, configured to configure the broadcast channel according to a preset constraint relationship between the synchronization signal and the broadcast channel;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
Further, as shown in fig. 10, the apparatus 10 may further include:
a sending module 13, configured to send a configured signal according to a periodic trigger or an aperiodic trigger, where the configured signal includes at least one of: synchronizing signals and broadcasting channels, and completing a complete signal transmission process within the preset time period.
Further, the synchronization signal includes: ZC sequence or pseudo-noise PN sequence; in the same synchronization window, the sequence length on each symbol is consistent, and the sequences on different symbols are different; the sequences employed by the different synchronization windows may be set to be the same or different as desired.
Furthermore, the time domain positions of the synchronization windows are preset, the time domain positions of different synchronization windows are not overlapped in time, and the time domain positions of the synchronization windows do not conflict with the time domain positions of the channel or the reference symbol with fixed time domain positions.
Further, the sending module is specifically configured to:
when the configured signal includes a synchronization signal and a broadcast channel, the synchronization signal carried by the synchronization window and the broadcast channel carried by the broadcast window corresponding to the synchronization window are transmitted using the same beam.
The present embodiment is used to implement the foregoing method embodiments, and the workflow and the working principle of each module in the present embodiment refer to the description in each embodiment, which is not described herein again.
According to the signal configuration device provided by the embodiment of the invention, the configuration modes of the synchronous signal and the broadcast channel are flexible and variable, and the coverage requirements of a 5G communication system, especially a high-frequency communication system, can be met.
An embodiment of the present invention further provides an information processing apparatus 20, as shown in fig. 11, including:
a receiving module 21, configured to receive a synchronization signal, and determine a position of a broadcast channel according to a constraint relationship between the synchronization signal and the broadcast channel;
an obtaining module 22, configured to obtain a broadcast message according to the position of the broadcast channel;
a processing module 23, configured to perform at least one of the following functions according to the synchronization signal and the broadcast message: timing, detecting a cell identification ID and acquiring a system message;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
Further, the processing module 22 is specifically configured to:
acquiring the subframe number of a subframe corresponding to the broadcast message and the symbol index in the subframe through the synchronous signal or the broadcast message;
acquiring a cell ID through the synchronization signal or the broadcast message;
and acquiring system information through the broadcast information.
The present embodiment is used to implement the foregoing method embodiments, and the workflow and the working principle of each module in the present embodiment refer to the description in each embodiment, which is not described herein again.
Compared with the prior art, the information processing device provided by the embodiment of the invention can acquire the broadcast channel by using the synchronization signal, and complete the functions of timing, cell ID detection, system information acquisition and the like according to the synchronization signal and the broadcast channel.
The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for executing steps of an embodiment of the signal configuration method or the information processing method described above.
Optionally, the storage medium is further configured to store program codes for performing the steps of the above-described signal configuration method or information processing method embodiment.
Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Optionally, in this embodiment, the processor executes the program code of the steps of the signal configuration method or the information processing method described above according to the program code stored in the storage medium.
Optionally, the specific examples in this embodiment may refer to the examples described in the foregoing signal configuration method or information processing method embodiments and optional implementation manners, and this embodiment is not described again here.
The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the modules is only one logical division, and there may be other divisions when the actual implementation is performed. In addition, the modules shown or discussed may be connected to each other through interfaces, which may be electrical, mechanical or other. The respective modules may or may not be physically separated, and may or may not be physical units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each module may be physically included alone, or two or more modules may be integrated into one module. The integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.
The integrated module implemented in the form of a software functional unit may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (18)
1. A method of signal configuration, comprising:
selecting a plurality of synchronization windows contained in a preset time period to carry synchronization signals;
each synchronization window comprises a plurality of continuous symbols, a plurality of subcarriers of each symbol bear synchronization signals, and the sending process of the synchronization signals is completed within the preset time period;
one synchronization window corresponds to one beam, and the beam is used for transmitting a synchronization signal of the corresponding synchronization window;
the configured signals include a synchronization signal and a broadcast channel, and the synchronization signal carried by the synchronization window and the broadcast channel carried by the broadcast window corresponding to the synchronization window are transmitted using the same beam.
2. The method of claim 1, further comprising:
configuring the broadcast channel according to a preset constraint relation between the synchronous signal and the broadcast channel;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
sending a configured signal according to a periodic trigger or an aperiodic trigger mode, wherein the configured signal comprises at least one of the following signals: synchronizing signals and broadcasting channels, and completing a complete signal transmission process within the preset time period, wherein the complete signal transmission process comprises the synchronizing signals and the broadcasting channels.
4. The method according to claim 1 or 2, wherein the selecting a plurality of synchronization windows included in a preset time period to carry synchronization signals comprises:
determining whether each synchronization window in a preset time period bears a synchronization signal or not by a sending end;
if the synchronous signal is carried in one synchronous window, carrying the synchronous signal at the same frequency domain position of all symbols included in the synchronous window;
if it is determined that the synchronization signal is not carried in one synchronization window, the synchronization signal is not carried on all symbols included in the synchronization window.
5. The method of claim 1 or 2, wherein the synchronization signal comprises: ZC sequence or pseudo-noise PN sequence; within the same synchronization window, the sequence length on each symbol is consistent, and the sequences on different symbols are different.
6. The method of claim 1 or 2, wherein the time domain positions of the synchronization windows are predetermined, the time domain positions of different synchronization windows do not overlap with each other in time, and the time domain positions of the synchronization windows do not collide with the time domain positions of the channel or the reference symbol having a fixed time domain position.
7. The method according to claim 1, wherein the number of consecutive symbols included in each synchronization window is denoted as p, and the value of p is a positive integer;
the values of p corresponding to the synchronization windows of different cells, the values of p corresponding to the synchronization windows of the same cell at different moments and the values of p corresponding to different synchronization windows are set in a unified manner or set independently, and the independently set p values are the same or different.
8. The method according to claim 1 or 2, wherein the frequency resources occupied by the respective symbols included in each synchronization window are the same.
9. The method of claim 2, wherein one broadcast channel corresponds to one broadcast window, and wherein the frequency resources occupied by the respective symbols included in each broadcast window are the same.
10. An information processing method characterized by comprising:
receiving a synchronous signal, and determining the position of a broadcast channel according to the constraint relation between the synchronous signal and the broadcast channel; acquiring a broadcast message according to the position of the broadcast channel;
according to the synchronous signal and the broadcast message, at least one of the following functions is completed: timing, detecting a cell identification ID and acquiring a system message;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers;
one synchronization window corresponds to one beam, and the beam is used for transmitting a synchronization signal of the corresponding synchronization window;
the configured signals include a synchronization signal and a broadcast channel, and the synchronization signal carried by the synchronization window and the broadcast channel carried by the broadcast window corresponding to the synchronization window are transmitted using the same beam.
11. The method of claim 10, wherein the performing the timing with the broadcast message according to the synchronization signal comprises:
acquiring the subframe number of a subframe corresponding to the broadcast message and the symbol index in the subframe through the synchronous signal or the broadcast message;
the completing cell Identification (ID) detection according to the synchronization signal and the broadcast message comprises: acquiring a cell ID through the synchronization signal or the broadcast message;
the completing system message acquisition according to the synchronization signal and the broadcast message comprises: and acquiring system information through the broadcast information.
12. A signal configuration apparatus, comprising:
the first configuration module is used for selecting a plurality of synchronization windows contained in a preset time period to bear synchronization signals;
each synchronization window comprises a plurality of continuous symbols, a plurality of subcarriers of each symbol bear synchronization signals, the preset time period corresponds to a preset time period, and the sending process of the synchronization signals is completed within the preset time period;
one synchronization window corresponds to one beam, and the beam is used for transmitting a synchronization signal of the corresponding synchronization window;
the configured signals include a synchronization signal and a broadcast channel, and the synchronization signal carried by the synchronization window and the broadcast channel carried by the broadcast window corresponding to the synchronization window are transmitted using the same beam.
13. The apparatus of claim 12, further comprising:
the second configuration module is used for configuring the broadcast channel according to the preset constraint relation between the synchronous signal and the broadcast channel;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers.
14. The apparatus of claim 12 or 13, further comprising:
a sending module, configured to send a configured signal according to a periodic trigger or an aperiodic trigger, where the configured signal includes at least one of: synchronizing signals and broadcasting channels, and completing a complete signal transmission process within the preset time period, wherein the complete signal transmission process comprises the synchronizing signals and the broadcasting channels.
15. The apparatus of claim 12 or 13, wherein the synchronization signal comprises: ZC sequence or pseudo-noise PN sequence; within the same synchronization window, the sequence length on each symbol is consistent, and the sequences on different symbols are different.
16. The apparatus of claim 12 or 13, wherein the time domain positions of the synchronization windows are preset, the time domain positions of different synchronization windows do not overlap with each other in time, and the time domain positions of the synchronization windows do not collide with the time domain positions of the channel or the reference symbol with fixed time domain positions.
17. An information processing apparatus characterized by comprising:
the receiving module is used for receiving the synchronous signal and determining the position of the broadcast channel according to the constraint relation between the synchronous signal and the broadcast channel;
the acquisition module is used for acquiring the broadcast message according to the position of the broadcast channel;
a processing module, configured to perform at least one of the following functions according to the synchronization signal and the broadcast message: timing, detecting a cell identification ID and acquiring a system message;
the constraint relationship includes at least one of:
a synchronization window for bearing the synchronization signal corresponds to a broadcast window for bearing the broadcast channel, and the relative position relationship between the synchronization window and the broadcast window is preset;
whether the sending of the synchronous signal carried by the synchronous window and the sending of the broadcast channel carried by the broadcast window corresponding to the synchronous window are consistent;
the value of the number p of the continuous symbols in each synchronization window corresponds to the value of the number k of the continuous symbols in each corresponding broadcast window one by one, and the value of p and the value of k are positive integers;
one synchronization window corresponds to one beam, and the beam is used for transmitting a synchronization signal of the corresponding synchronization window;
the configured signals include a synchronization signal and a broadcast channel, and the synchronization signal carried by the synchronization window and the broadcast channel carried by the broadcast window corresponding to the synchronization window are transmitted using the same beam.
18. The apparatus of claim 17, wherein the processing module is specifically configured to:
acquiring the subframe number of a subframe corresponding to the broadcast message and the symbol index in the subframe through the synchronous signal or the broadcast message;
acquiring a cell ID through the synchronization signal or the broadcast message;
and acquiring system information through the broadcast information.
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| EP3771261B1 (en) | 2018-03-28 | 2024-01-17 | Beijing Xiaomi Mobile Software Co., Ltd. | Paging synchronization indication method and device, paging synchronization method, and device and base station |
| CN108513719B (en) * | 2018-04-04 | 2020-11-13 | 北京小米移动软件有限公司 | Method and device for transmitting synchronous broadcast block |
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