CN108632982B - Base station, synchronization signal block configuration method, user equipment and synchronization method thereof - Google Patents
Base station, synchronization signal block configuration method, user equipment and synchronization method thereof Download PDFInfo
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Abstract
The method for configuring the synchronization signal block comprises the following steps: selecting one or more synchronization signal block candidate positions from synchronization signal block candidate positions preset in a synchronization period; the end position of the synchronization signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronization period, the synchronization signal block group candidate position comprises more than two synchronization signal block candidate positions, and the more than two synchronization signal block candidate positions are continuous; configuring corresponding synchronous signal block groups at the selected candidate positions of the synchronous signal block groups; the sync signal blocks of the configured sync signal block group are set at the sync signal block candidate positions among the corresponding sync signal block candidate positions. The scheme can avoid the generation of time domain fragment resources and avoid unnecessary system control overhead when the user equipment and the base station are synchronized.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a base station, a synchronization signal block configuration method, a user equipment, and a synchronization method thereof.
Background
In a long Term Evolution (L ong Term Evolution, L TE) system, a User Equipment (UE) achieves time synchronization with a Base Station (BS) through a synchronization signal.
In the L TE system, Synchronization signals used between the UE and the base station at least include Primary Synchronization Signal (PSS) and Secondary Synchronization Signal (SSS), and on the premise of an explicit duplex mode, the PSS and the SSS are fixed in position in the time domain of a system frame.
In the discussion of 3GPP Rel-14, it is proposed that a synchronization signal block including a primary synchronization signal, a secondary synchronization signal, and other signals is defined in consideration of multiple analog beam scenarios and other factors. Some reference configuration schemes have been proposed in 3GPP Rel-14 discussion for the above configuration method of the synchronization signal block in the future mobile communication system, but these schemes generate more fragmented system resources when the ue and the base station perform synchronization, and have a problem of high system overhead.
Disclosure of Invention
The technical problem solved by the invention is how to avoid the generation of fragmented resources when the user equipment and the base station are synchronized so as to save resources and reduce system overhead.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for configuring a synchronization signal block, including: selecting one or more synchronization signal block candidate positions from synchronization signal block candidate positions preset in a synchronization period; the end position of the synchronization signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronization period, the synchronization signal block group candidate position comprises more than two synchronization signal block candidate positions, and the more than two synchronization signal block candidate positions are continuous; configuring corresponding synchronous signal block groups at the selected candidate positions of the synchronous signal block groups; the sync signal blocks of the configured sync signal block group are set at the sync signal block candidate positions among the corresponding sync signal block candidate positions.
Optionally, the method further comprises: and sending the time domain position information of the corresponding synchronous signal block in the configured synchronous signal block group to the user equipment.
Optionally, a plurality of synchronization signal block candidate positions of the synchronization signal block group candidate positions preset in the synchronization period are sequentially numbered; and the time domain position information of the corresponding synchronous signal block is the number information of the candidate position of the corresponding synchronous signal block.
Optionally, the method further comprises: and sending the information of the time window where the corresponding synchronous signal block is located to user equipment, so that the user equipment detects the corresponding synchronous signal block in the time window.
Optionally, the synchronization signal block group occupies more than one time slot resource.
Optionally, the time domain resource occupied by the synchronization signal block belongs to more than one time slot.
Optionally, the number of the synchronization signal block groups is more than one.
The embodiment of the invention also provides a synchronization method of the user equipment, which comprises the following steps: determining the time domain position of the corresponding synchronous signal block in the corresponding synchronous period; the time domain position of the corresponding synchronous signal block is positioned in a synchronous signal block group configured by the base station, the synchronous signal block group configured by the base station is arranged at one or more synchronous signal block group candidate positions selected from preset synchronous signal block group candidate positions, the end position of the synchronous signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronous period, the synchronous signal block group candidate positions comprise more than two synchronous signal block candidate positions, the more than two synchronous signal block candidate positions are continuous, and the corresponding synchronous signal block is arranged at the corresponding synchronous signal block candidate position in the synchronous signal block group candidate position selected by the base station; and acquiring the corresponding synchronous signal block from the determined time domain position of the synchronous signal block, and synchronizing with the base station by adopting the acquired synchronous signal block.
Optionally, the determining the time domain position of the corresponding synchronization signal block in the corresponding synchronization period includes: time domain location information of a corresponding synchronization signal block is received from a base station.
Optionally, a plurality of synchronization signal block candidate positions of the synchronization signal block group candidate positions preset in the corresponding synchronization period are sequentially numbered; and the time domain position information of the corresponding synchronous signal block received from the base station is the number information of the candidate position of the synchronous signal block where the corresponding synchronous signal block is located.
Optionally, the determining the time domain position of the corresponding synchronization signal block in the corresponding synchronization period includes: receiving information of a time window in which a corresponding synchronization signal block is located from the base station; and detecting the time domain position of the synchronous signal block in the time window.
Optionally, the determining the time domain position of the synchronization signal block in the corresponding synchronization period includes: and determining the time domain position of the synchronous signal block by detecting the preset candidate position of the synchronous signal block group in the corresponding synchronous period.
Optionally, the time domain resource occupied by the synchronization signal block in the synchronization signal block group belongs to more than one time slot.
Optionally, the synchronization signal block group occupies more than one time slot resource.
Optionally, the number of the synchronization signal block groups is more than one.
An embodiment of the present invention further provides a base station, including: a selecting unit adapted to select one or more synchronization signal block candidate positions from synchronization signal block candidate positions preset in a synchronization period; the end position of the synchronization signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronization period, the synchronization signal block group candidate position comprises more than two synchronization signal block candidate positions, and the more than two synchronization signal block candidate positions are continuous; a configuration unit adapted to configure the corresponding synchronization signal block group at the selected synchronization signal block group candidate position; the sync signal blocks of the configured sync signal block group are set at the sync signal block candidate positions among the corresponding sync signal block candidate positions.
Optionally, the base station further includes: and the first sending unit is suitable for sending the time domain position information of the corresponding synchronization signal block in the configured synchronization signal block group to the user equipment.
Optionally, a plurality of candidate positions of the synchronization signal block in the preset candidate positions of the synchronization signal block group in the synchronization period are sequentially numbered; the time domain position information of the corresponding synchronization signal block sent by the first sending unit is the number information of the candidate position of the corresponding synchronization signal block.
Optionally, the base station further includes: and the second sending unit is suitable for sending the information of the time window where the corresponding synchronization signal block is located to the user equipment, so that the user equipment can detect the corresponding synchronization signal block in the time window.
Optionally, the synchronization signal block group occupies more than one time slot resource.
Optionally, the time domain resource occupied by the synchronization signal block belongs to more than one time slot.
Optionally, the number of the synchronization signal block groups is more than one.
An embodiment of the present invention further provides a user equipment, including: a determining unit adapted to determine a time domain position of a corresponding synchronization signal block within a respective synchronization period; the time domain position of the corresponding synchronous signal block is positioned in a synchronous signal block group configured by the base station, the synchronous signal block group configured by the base station is arranged at one or more synchronous signal block group candidate positions selected from preset synchronous signal block group candidate positions, the end position of the synchronous signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronous period, the synchronous signal block group candidate positions comprise more than two synchronous signal block candidate positions, the more than two synchronous signal block candidate positions are continuous, and the corresponding synchronous signal block is arranged at the corresponding synchronous signal block candidate position in the synchronous signal block group candidate position selected by the base station; and the synchronization unit is suitable for acquiring the corresponding synchronization signal block from the determined time domain position of the synchronization signal block and synchronizing the base station by adopting the acquired synchronization signal block.
Optionally, the determining unit is adapted to receive time domain position information of the corresponding synchronization signal block from the base station and determine time domain position information of the corresponding synchronization signal block.
Optionally, a plurality of synchronization signal block candidate positions of the synchronization signal block group candidate positions preset in the corresponding synchronization period are sequentially numbered; the time domain position information of the corresponding synchronous signal block received by the determining unit from the base station is the number information of the candidate position of the synchronous signal block where the corresponding synchronous signal block is located.
Optionally, the determining unit is adapted to receive, from the base station, information of a time window in which a corresponding synchronization signal block is located; and detecting the time domain position of the synchronous signal block in the time window.
Optionally, the determining unit is adapted to determine the time domain position of the synchronization signal block by detecting a preset synchronization signal block group candidate position in a corresponding synchronization period.
Optionally, the time domain resource occupied by the synchronization signal block in the synchronization signal block group belongs to more than one time slot.
Optionally, the synchronization signal block group occupies more than one time slot resource.
Optionally, the number of the synchronization signal block groups is more than one.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the above scheme, by keeping the time domain end position of the configured synchronization signal block group consistent with the end position of the corresponding time slot in the synchronization period, and the time domain positions of the plurality of synchronization signal blocks in the same synchronization signal block group are continuous, fragmented time domain resources scattered among the plurality of synchronization signal blocks can be integrated into continuous time domain resources located before the synchronization signal block group, so that when the continuous time domain resources before the synchronization signal block group are utilized, the overhead of control signaling is reduced, and the utilization rate of the resources is improved.
Drawings
Fig. 1 is a flowchart of a synchronization signal block allocation method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a candidate location of a synchronization signal block set according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the time domain positions of the synchronization signal blocks in the synchronization signal block group according to the embodiment of the present invention;
fig. 4 is a schematic diagram of the time domain positions of the sync signal blocks in another set of sync signal blocks according to another embodiment of the present invention;
fig. 5 is a schematic diagram of the time domain positions of the sync signal blocks in another sync signal block set according to another embodiment of the present invention;
fig. 6 is a flowchart of a synchronization method of a user equipment according to an embodiment of the present invention;
fig. 7 is a flowchart of a synchronization method of a user equipment in an embodiment of the present invention;
fig. 8 is a signaling flow diagram of a synchronization method of a user equipment in another embodiment of the present invention;
fig. 9 is a schematic structural diagram of a base station in an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a user equipment in an embodiment of the present invention.
Detailed Description
As mentioned in the background, in consideration of the multi-analog beam scenario, the 3GPP Rel-14 discussion proposes a synchronization signal block including a primary synchronization signal, a secondary synchronization signal, and other signals.
In the method for configuring the synchronization signal block, one or more synchronization signal blocks are set in one time slot with the time slot in the synchronization period as the minimum unit. Because the time domain resource in a synchronization period is divided into a plurality of scattered time domain resources by more than one synchronization signal block, the configuration method does not utilize the base station or the user equipment to utilize the time domain resource except the time domain resource occupied by the synchronization signal block.
In order to solve the above problem, in the technical solution of the embodiment of the present invention, the time domain end position of the configured synchronization signal block group is kept consistent with the end position of the corresponding time slot in the synchronization period, and the time domain positions of a plurality of synchronization signal blocks in the same synchronization signal block group are continuous, so that the generation of time domain fragment resources can be avoided, and unnecessary system control overhead is avoided.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 shows a flowchart of a synchronization signal block configuration method in an embodiment of the present invention. Referring to fig. 1, a method for configuring a synchronization signal block in an embodiment of the present invention may include:
step S101: one or more synchronization signal block candidate positions are selected from the synchronization signal block candidate positions preset in the synchronization period.
In one embodiment, the predetermined candidate positions of the synchronization signal block set within the synchronization period may be predetermined by the communication protocol. For both the base station and the user equipment, the preset synchronization signal block group candidate positions within the synchronization period are known. When configuring the synchronization signal block, the base station may select and use from the preset synchronization signal block group candidate positions in the synchronization period according to actual needs.
Referring to fig. 2, in a synchronization period T, the preset candidate positions of the synchronization signal block are P1-PN, and N is an integer greater than or equal to 1. When N is equal to 1, only one candidate position of the preset synchronization signal block group in the synchronization period T is shown; when N is an integer greater than 1, it indicates that at least two synchronization signal block group candidate positions P1-PN preset in the synchronization period T are present.
The time domain end positions of the preset synchronization signal block group candidate positions P1-PN in the synchronization period T are T1-TN, respectively, and T1-TN are the end times of the corresponding preset time slots in the synchronization period T, respectively, that is, the end positions of the preset synchronization signal block group candidate positions P1-PN are consistent with the end time of the corresponding preset time slots in the synchronization period T.
The preset synchronization signal block candidate positions P1-PN in the synchronization period T may include one or more synchronization signal block candidate positions, and the number of the synchronization signal block candidate positions included in the synchronization signal block candidate positions P1-PN may be the same or different. For example, the preset synchronization signal block candidate positions P1-PN within the synchronization period T all include 2 synchronization signal block candidate positions, or the partial synchronization signal block candidate position Pi (1 ≦ i ≦ N) among the synchronization signal block candidate positions P1-PN includes 2 synchronization signal block candidate positions, the partial synchronization signal block candidate position Pj (1 ≦ j ≦ N) includes 3 synchronization signal block candidate positions, and so on.
Step S102: and configuring the corresponding synchronization signal block group at the selected synchronization signal block group candidate position.
In a specific implementation, when the base station selects a desired candidate location of a synchronization signal block group, the base station may generate a corresponding synchronization signal block, and set the generated synchronization signal block group at the selected candidate location of the synchronization signal block group. Wherein, the plurality of synchronization signal blocks placed in the selected same synchronization signal block group candidate position is a synchronization signal block group. It should be noted that, the plurality of synchronization signal blocks configured at the selected synchronization signal block group candidate location by the base station may be located at partially continuous synchronization signal block candidate locations in the corresponding synchronization signal block group candidate location, or may occupy all the synchronization signal block candidate locations in the synchronization signal block group candidate location, and the base station may perform the selection according to actual needs.
Therefore, the time domain end position of the synchronization signal block group configured by the base station, that is, the end position of the corresponding synchronization signal block candidate position; the number of the candidate positions of the synchronization signal block included in the candidate position of the synchronization signal block selected by the base station, that is, the number of the synchronization signal blocks included in the corresponding synchronization signal block group. This means that the time domain positions of two or more synchronization signal blocks in the synchronization signal block group are consecutive, and the time domain end position of the synchronization signal block group coincides with the end position of the corresponding preset time slot in the synchronization period. In this way, the location of the synchronization signal block within the synchronization period can be easily determined, both for the base station and the user equipment.
Referring to fig. 3, taking the case where a slot includes W symbols, a synchronization signal block group includes M synchronization signal blocks, and each signal block occupies L symbols, when it is determined that the time domain end position of the synchronization signal block group coincides with the end time of the slot S L n, i.e., the time TNThen, for each synchronization signal block i of the synchronization signal block group (i is an integer greater than 1), the time domain end position Ti FinalThe following formula can be used for determination:
Ti Final＝TN-(i-1)*L (1)
Determining the time domain end position of each synchronous signal block i (i is an integer which is more than 1 and less than or equal to M) as Ti FinalTime domain start position T of synchronization signal block iIbeginFor the end position of the previous adjacent synchronization signal block, i.e.:
Tibegin＝TN-i*L (2)
Referring to fig. 4, taking a slot including 7 symbols and each sync block having a length of 3 symbols as an example, when a sync block group includes M sync blocks and the time domain end position of the sync block group coincides with the end time of the slot S L n, i.e. the time TNIn the synchronization signal block group TN:
the time domain position of the 1 st synchronization signal block is the symbol TN-3～TNThe time domain position of the 2 nd synchronizing signal block is a symbol TN-6～TN-3, the time domain position of the 3 rd synchronization signal block is the slave symbol TN-9～TN-6 … … Mth synchronization signal block in the time domain position of symbol TN-M*3～TN-(M-1)*3。
Referring to fig. 5, taking a slot including 14 symbols and each sync signal block having a length of 4 symbols as an example, when a sync signal block group includes M sync signal blocks and the time domain end position of the sync signal block group coincides with the end time of the slot S L n, i.e. the time TNIn the synchronization signal block group TN:
the time domain position of the 1 st synchronization signal block is a symbol (T)N-4)～TNThe time domain position of the 2 nd synchronizing signal block is a symbol (T)N-8)～(TN-4), the 3 rd synchronization signal block is located in the time domain position of the slave symbol (T)N-12)～(TN-8) … … M synchronization signal block at the time domain position of the symbol TN-M*4]～[TN-(M-1)*4]。
As can be seen from fig. 3 to 5, the synchronization signal block groups may be arranged across time slots, such as occupying time slot S L simultaneouslyn-2、SLn-1And time slot S LnOr occupy the time slot S L at the same timen-1And time slot S LnThe time domain resources in (1), that is, the time domain resources occupied by the same signal block group, may belong to at least two time slots. Similarly, the synchronization signal blocks may also be arranged across time slots.
In the above-mentioned synchronization signal block configuration manner, the fragmented idle time domain resources, which are originally dispersed in each time slot configured with the synchronization signal block in the synchronization period and are other than the synchronization signal block, are concentrated into the continuous idle time domain resources before the synchronization signal block, and compared with a plurality of fragmented time domain resource spaces, the method can reduce the interaction of the control signaling, and has the advantages of reduced control signaling overhead, high resource utilization rate, and the like.
In the above description, how the base station configures the synchronization signal block is described, and in the following description, how the ue acquires the synchronization signal block in the synchronization period configured by the base station to perform time synchronization with the base station is described.
Referring to fig. 6, a synchronization method of a user equipment in an embodiment of the present invention may include the following steps:
step S601: the time domain position of the corresponding synchronization signal block within the corresponding synchronization period is determined.
In a specific implementation, when the ue performs time synchronization with the base station, the ue may first determine a time domain position of a synchronization signal block within the synchronization period. The time domain position of the corresponding synchronous signal block in the synchronous period is located at the corresponding synchronous signal block candidate position in the synchronous signal block group candidate position selected by the base station.
In a specific implementation, the manner in which the ue determines the time domain position of the corresponding synchronization signal block in the corresponding synchronization period may be chosen in various ways, such as indicated by the base station, or actively detecting acquisition.
Step S602: and acquiring the corresponding synchronous signal block from the determined time domain position of the synchronous signal block, and synchronizing with the base station by adopting the acquired synchronous signal block.
In a specific implementation, when the user equipment acquires the time domain position of the corresponding synchronization signal block in a pre-agreed manner, the user equipment may acquire the corresponding synchronization signal block from the determined time domain position of the synchronization signal block at a corresponding time, and start a time synchronization process with the base station, thereby finally realizing time synchronization with the base station.
Fig. 7 shows a signaling flow diagram of a synchronization method of a user equipment in an embodiment of the present invention. Referring to fig. 7, a synchronization method of a user equipment in the embodiment of the present invention is used for synchronization between the user equipment and a base station, and may specifically be implemented by the following operations:
step S701: the base station selects one or more synchronization signal block candidate positions from synchronization signal block candidate positions preset in a synchronization period.
With reference to fig. 4, the base station may select one or more than one synchronization signal block from the preset synchronization signal block candidate positions P1-PN in the synchronization period according to actual needs, such as the system status, for configuring the corresponding synchronization signal block. When there are multiple candidate positions of the synchronization signal block selected by the base station, the time domain lengths of the selected candidate positions of the synchronization signal block may be the same or different.
Step S702: and the base station configures the corresponding synchronous signal block group at the selected candidate position of the synchronous signal block group.
In a specific implementation, when the selected synchronization signal block group candidate position is determined, the base station sets the generated corresponding synchronization signal block on the selected synchronization signal block group candidate position. Wherein, more than two continuous synchronous signal blocks placed at the same synchronous signal block group candidate position form a synchronous signal block group.
Step S703: and the user equipment detects all preset synchronization signal block group candidate positions in a synchronization period to obtain corresponding synchronization signal blocks.
In a specific implementation, the ue continuously detects a synchronization signal block during a synchronization period to obtain a corresponding synchronization signal block.
Step S704: and the user equipment synchronizes with the base station by adopting the synchronous signal block obtained by detection.
In a specific implementation, when the ue detects its own synchronization signal block from the corresponding time domain position, the ue may perform time synchronization with the base station by using the time synchronization information carried by the synchronization signal block.
The synchronization method of the ue shown in fig. 7 may be that the ue uses the synchronization signal block detected in the synchronization period to synchronize with the base station when the ue is not synchronized with the base station.
Fig. 8 shows another synchronization method for a ue in the embodiment of the present invention, where a base station sends time domain location information of a synchronization signal block corresponding to the ue, and the ue acquires the corresponding synchronization signal block at a time domain location indicated by the base station to synchronize with the base station, which specifically includes the following steps:
step S801: the base station selects one or more synchronous signal block candidate positions from the synchronous signal block candidate positions preset in the synchronous period.
Step S802: and the base station configures the corresponding synchronous signal block group at the selected candidate position of the synchronous signal block group.
Step S803: and the base station sends the time domain position information of the corresponding synchronous signal block in the configured synchronous signal block group to the user equipment.
In specific implementation, the base station may notify the time domain information of the corresponding synchronization signal block to the user equipment in a plurality of different manners, and may select the time domain information according to actual needs.
In an embodiment of the present invention, the base station indicates, to the user equipment, information of a time window in which the corresponding synchronization signal block is located through a downlink signaling, so that the user equipment knows the information of the time window.
In another embodiment of the present invention, the candidate positions of the synchronization signal block corresponding to the preset candidate positions of the synchronization signal block group in the synchronization period, that is, all the candidate positions of the synchronization signal block in the synchronization period are numbered in sequence, and when the base station selects the corresponding candidate positions of the synchronization signal block group, the base station may determine the number of the candidate position of the synchronization signal block corresponding to the selected candidate position of the synchronization signal block group, and then the base station may notify the user equipment of the information of the number of the candidate position of the corresponding synchronization signal block, so that the user equipment may learn the information of the number of the candidate position of the corresponding synchronization signal block, and further determine the time domain position of the corresponding synchronization signal block.
Step S804: the user equipment receives time domain position information of a corresponding synchronization signal block.
In a specific implementation, the ue may receive time domain location information of a corresponding synchronization signal block transmitted by the base station.
Step S805: and the user equipment acquires a corresponding synchronous signal block at a corresponding time domain position and synchronizes with the base station by adopting the acquired synchronous signal block.
In specific implementation, according to different application scenarios, that is, different manners of the information of the time domain position of the corresponding synchronization signal block sent by the base station, the user equipment may determine the candidate position of the corresponding synchronization signal block in a corresponding manner.
In an embodiment of the present invention, when the base station indicates the information of the time window in which the corresponding synchronization signal block is located to the user equipment through the downlink signaling, the user equipment may perform detection at the corresponding synchronization signal block group candidate position in the corresponding time window to obtain the information of the corresponding synchronization signal block. Wherein the time window may be less than or equal to a time length of one synchronization period.
In another embodiment of the present invention, when the base station sends the information of the number of the candidate position of the synchronization signal block where the synchronization signal block is located to the user equipment, the user equipment may determine the time domain position of the corresponding synchronization signal block based on the obtained number of the candidate position of the synchronization signal block, and detect and obtain the corresponding synchronization signal block at the determined time domain position of the synchronization signal block.
The two modes can be that the user equipment acquires the synchronous signal block through the synchronous signal block information sent by the synchronized base station on the basis of synchronization with the base station.
It should be noted that, steps S801 to S802 may be executed with reference to descriptions of other corresponding parts in the embodiment of the present invention, and are not described again.
Fig. 9 shows a structure of a base station in the embodiment of the present invention. Referring to fig. 9, a base station 900 in the embodiment of the present invention may include a selecting unit 901 and a configuring unit 902, where:
a selecting unit 901 adapted to select one or more candidate positions of the synchronization signal blocks from the candidate positions of the synchronization signal blocks preset in the synchronization period; the end position of the synchronization signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronization period, the synchronization signal block group candidate position comprises more than two synchronization signal block candidate positions, and the more than two synchronization signal block candidate positions are continuous;
an arranging unit 902 adapted to arrange the corresponding synchronization signal block group at the selected synchronization signal block group candidate position; the sync signal blocks of the configured sync signal block group are set at the sync signal block candidate positions among the corresponding sync signal block candidate positions. The plurality of synchronization signal blocks allocated by the base station at the selected synchronization signal block group candidate position may be located at partially consecutive synchronization signal block candidate positions in the corresponding synchronization signal block group candidate position, or may occupy all the synchronization signal block candidate positions in the synchronization signal block group candidate position, again without limitation.
In a specific implementation, the number of the synchronization signal block groups configured by the configuration unit 902 may be more than one, the synchronization signal block groups may occupy more than one time slot resource, and the time domain resource occupied by the synchronization signal block may belong to more than one time slot.
In a specific implementation, in order to facilitate the ue to obtain time domain location information of a corresponding synchronization signal block, and further facilitate time synchronization between the ue and the base station, the base station 900 may further include a first sending unit 903, where:
a first sending unit 903, adapted to send the time domain location information of the corresponding synchronization signal block in the configured synchronization signal block group to the user equipment.
In an embodiment of the present invention, a plurality of candidate positions of the synchronization signal block in the preset candidate positions of the synchronization signal block group in the synchronization period are sequentially numbered; the time domain position information of the corresponding synchronization signal block sent by the first sending unit 903 is the number information of the corresponding synchronization signal block candidate position, so that the user equipment determines the time domain position of the corresponding synchronization signal block through the number information of the corresponding synchronization signal block candidate position.
In another embodiment of the present invention, in order to facilitate the user equipment to obtain time domain location information of a corresponding synchronization signal block, and further facilitate time synchronization between the user equipment and a base station, the base station 900 may further include a second sending unit 904, where:
a second sending unit 904, adapted to send information of a time window in which the corresponding synchronization signal block is located to the user equipment, so that the user equipment detects the corresponding synchronization signal block in the time window.
Fig. 10 shows a structure of a user equipment in the embodiment of the present invention. Referring to fig. 10, a user equipment 1000 in the embodiment of the present invention may include a determining unit 1001 and a synchronizing unit 1002, where:
a determining unit 1001 adapted to determine a time domain position of a corresponding synchronization signal block within a respective synchronization period; the time domain position of the corresponding synchronization signal block is located in a synchronization signal block group configured by the base station, the synchronization signal block group configured by the base station is arranged at one or more synchronization signal block group candidate positions selected from preset synchronization signal block group candidate positions, the end position of the synchronization signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronization period, the synchronization signal block group candidate positions comprise more than two synchronization signal block candidate positions, the more than two synchronization signal block candidate positions are continuous, and the corresponding synchronization signal block is arranged at the corresponding synchronization signal block candidate position in the synchronization signal block group candidate positions selected by the base station. The number of the synchronization signal block groups configured by the base station may be more than one, the synchronization signal block groups may occupy more than one time slot resource, and the time domain resource occupied by the synchronization signal block may belong to more than one time slot.
In a specific implementation, the determining unit 1001 is adapted to receive time domain position information of a corresponding synchronization signal block from a base station and determine time domain position information of the corresponding synchronization signal block.
In an embodiment of the present invention, a plurality of candidate positions of the synchronization signal block group preset in the corresponding synchronization period are sequentially numbered; the time domain position information of the corresponding synchronization signal block received by the determination unit 1001 unit from the base station is the number information of the candidate position of the synchronization signal block where the corresponding synchronization signal block is located.
In another embodiment of the present invention, the determining unit 1001 is adapted to receive information of a time window in which a corresponding synchronization signal block is located from the base station; and detecting the time domain position of the synchronous signal block in the time window.
In another embodiment of the present invention, the determining unit 1001 is adapted to determine the time domain position of the synchronization signal block by detecting a preset synchronization signal block group candidate position in a corresponding synchronization period.
A synchronization unit 1002, adapted to acquire a corresponding synchronization signal block from the determined time domain position of the synchronization signal block, and synchronize with the base station using the acquired synchronization signal block.
By adopting the scheme in the embodiment of the invention, the time domain end position of the configured synchronization signal block group is kept consistent with the end position of the corresponding time slot in the synchronization period, and the time domain positions of a plurality of synchronization signal blocks in the same synchronization signal block group are continuous, so that fragmented time domain resources which are scattered and distributed before the plurality of synchronization signal blocks can be integrated into continuous time domain resources which are positioned before the synchronization signal block group, the overhead of control signaling can be reduced when the continuous time domain resources before the synchronization signal block group are utilized, and the utilization rate of the resources can be further improved.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (30)
1. A method for configuring a synchronization signal block, comprising:
selecting one or more synchronization signal block candidate positions from synchronization signal block candidate positions preset in a synchronization period; the end position of the synchronization signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronization period, the synchronization signal block group candidate position comprises more than two synchronization signal block candidate positions, and the more than two synchronization signal block candidate positions are continuous;
configuring corresponding synchronous signal block groups at the selected candidate positions of the synchronous signal block groups; the sync signal blocks of the configured sync signal block group are set at the sync signal block candidate positions among the corresponding sync signal block candidate positions.
2. The synchronization signal block configuration method according to claim 1, further comprising:
and sending the time domain position information of the corresponding synchronous signal block in the configured synchronous signal block group to the user equipment.
3. The sync signal block allocation method according to claim 2, wherein a plurality of sync signal block candidate positions of the sync signal block group candidate positions preset in the sync period are sequentially numbered; and the time domain position information of the corresponding synchronous signal block is the number information of the candidate position of the corresponding synchronous signal block.
4. The synchronization signal block configuration method according to claim 1, further comprising:
and sending the information of the time window where the corresponding synchronous signal block is located to user equipment, so that the user equipment detects the corresponding synchronous signal block in the time window.
5. The synchronization signal block configuration method according to any of claims 1 to 4, wherein the synchronization signal block group occupies more than one time slot resource.
6. The method of claim 5, wherein the time domain resource occupied by the synchronization signal block belongs to more than one time slot.
7. The method of claim 6, wherein the number of the synchronization signal block groups is at least one.
8. A synchronization method of a user equipment, comprising:
determining the time domain position of the corresponding synchronous signal block in the corresponding synchronous period; the time domain position of the corresponding synchronous signal block is positioned in a synchronous signal block group configured by the base station, the synchronous signal block group configured by the base station is arranged on one or more synchronous signal block group candidate positions selected from synchronous signal block group candidate positions preset in a synchronous period, the end position of the synchronous signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronous period, the synchronous signal block group candidate positions comprise more than two synchronous signal block candidate positions, the more than two synchronous signal block candidate positions are continuous, and the corresponding synchronous signal block is arranged on the corresponding synchronous signal block candidate position in the synchronous signal block group candidate positions selected by the base station;
and acquiring the corresponding synchronous signal block from the determined time domain position of the synchronous signal block, and synchronizing with the base station by adopting the acquired synchronous signal block.
9. The method of claim 8, wherein the determining the time domain position of the corresponding synchronization signal block in the corresponding synchronization period comprises:
time domain location information of a corresponding synchronization signal block is received from a base station.
10. The synchronization method of the ue of claim 9, wherein the plurality of candidate positions of the synchronization signal block group preset in the corresponding synchronization period are sequentially numbered; and the time domain position information of the corresponding synchronous signal block received from the base station is the number information of the candidate position of the synchronous signal block where the corresponding synchronous signal block is located.
11. The method of claim 8, wherein the determining the time domain position of the corresponding synchronization signal block in the corresponding synchronization period comprises:
receiving information of a time window in which a corresponding synchronization signal block is located from the base station;
and detecting the time domain position of the synchronous signal block in the time window.
12. The method of claim 8, wherein the determining the time domain position of the corresponding synchronization signal block in the corresponding synchronization period comprises:
and determining the time domain position of the synchronous signal block by detecting the preset candidate position of the synchronous signal block group in the corresponding synchronous period.
13. The synchronization method of the user equipment according to any of claims 8-12, wherein the time domain resource occupied by the synchronization signal block in the synchronization signal block group belongs to more than one time slot.
14. The synchronization method of the ue of claim 13, wherein the synchronization signal block group occupies more than one timeslot resource.
15. The synchronization method of a user equipment according to claim 14, wherein the number of the synchronization signal block groups is more than one.
16. A base station, comprising:
a selecting unit adapted to select one or more synchronization signal block candidate positions from synchronization signal block candidate positions preset in a synchronization period; the end position of the synchronization signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronization period, the synchronization signal block group candidate position comprises more than two synchronization signal block candidate positions, and the more than two synchronization signal block candidate positions are continuous;
a configuration unit adapted to configure the corresponding synchronization signal block group at the selected synchronization signal block group candidate position; the sync signal blocks of the configured sync signal block group are set at the sync signal block candidate positions among the corresponding sync signal block candidate positions.
17. The base station of claim 16, further comprising:
and the first sending unit is suitable for sending the time domain position information of the corresponding synchronization signal block in the configured synchronization signal block group to the user equipment.
18. The base station of claim 17, wherein a plurality of candidate positions of the synchronization signal block within the preset candidate positions of the synchronization signal block within the synchronization period are sequentially numbered; the time domain position information of the corresponding synchronization signal block sent by the first sending unit is the number information of the candidate position of the corresponding synchronization signal block.
19. The base station of claim 16, further comprising:
and the second sending unit is suitable for sending the information of the time window where the corresponding synchronization signal block is located to the user equipment, so that the user equipment can detect the corresponding synchronization signal block in the time window.
20. The base station according to any of claims 16-19, wherein said synchronization signal block set occupies more than one time slot resource.
21. The base station of claim 20, wherein the time domain resource occupied by the synchronization signal block belongs to more than one time slot.
22. The base station of claim 21, wherein the number of the synchronization signal block groups is more than one.
23. A user device, comprising:
a determining unit adapted to determine a time domain position of a corresponding synchronization signal block within a respective synchronization period; the time domain position of the corresponding synchronous signal block is positioned in a synchronous signal block group configured by the base station, the synchronous signal block group configured by the base station is arranged on one or more synchronous signal block group candidate positions selected from synchronous signal block group candidate positions preset in a synchronous period, the end position of the synchronous signal block group candidate position is consistent with the end position of the corresponding preset time slot in the synchronous period, the synchronous signal block group candidate positions comprise more than two synchronous signal block candidate positions, the more than two synchronous signal block candidate positions are continuous, and the corresponding synchronous signal block is arranged on the corresponding synchronous signal block candidate position in the synchronous signal block group candidate positions selected by the base station;
and the synchronization unit is suitable for acquiring the corresponding synchronization signal block from the determined time domain position of the synchronization signal block and synchronizing the base station by adopting the acquired synchronization signal block.
24. The UE of claim 23, wherein the determining unit is adapted to receive time domain location information of a corresponding synchronization signal block from a base station and determine the time domain location information of the corresponding synchronization signal block.
25. The UE of claim 24, wherein a plurality of candidate positions of the synchronization signal block group preset in the corresponding synchronization period are sequentially numbered;
the time domain position information of the corresponding synchronous signal block received by the determining unit from the base station is the number information of the candidate position of the synchronous signal block where the corresponding synchronous signal block is located.
26. The UE of claim 23, wherein the determining unit is adapted to receive information of a time window in which a corresponding synchronization signal block is located from the base station; and detecting the time domain position of the synchronous signal block in the time window.
27. The UE of claim 23, wherein the determining unit is adapted to determine the time domain position of the synchronization signal block by detecting a preset candidate position of the synchronization signal block group in a corresponding synchronization period.
28. The user equipment according to any of claims 23-27, wherein the time domain resource occupied by the synchronization signal block in the synchronization signal block group belongs to more than one time slot.
29. The UE of claim 28, wherein the synchronization signal block group occupies more than one timeslot resource.
30. The user equipment of claim 29, wherein the number of the synchronization signal block groups is more than one.
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| CN111181702B (en) | 2018-11-09 | 2021-08-13 | 成都华为技术有限公司 | Transmission method of synchronous signal, network equipment and terminal equipment |
| CN112189366B (en) * | 2018-11-23 | 2023-04-25 | Oppo广东移动通信有限公司 | Wireless communication method, network device, terminal device, chip, and storage medium |
| CN111435889B (en) * | 2019-01-11 | 2021-08-31 | 华为技术有限公司 | Method and device for sending synchronization signal |
| CN110601809B (en) * | 2019-09-30 | 2021-04-02 | 北京紫光展锐通信技术有限公司 | Information sending method and device and information receiving method and device |
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