CN107733608B - Method and device for sending synchronization signal - Google Patents
Method and device for sending synchronization signal Download PDFInfo
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- CN107733608B CN107733608B CN201610666553.XA CN201610666553A CN107733608B CN 107733608 B CN107733608 B CN 107733608B CN 201610666553 A CN201610666553 A CN 201610666553A CN 107733608 B CN107733608 B CN 107733608B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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Abstract
The application discloses a method and a device for sending a synchronization signal, wherein the method comprises the following steps: the network equipment sends a first synchronization signal on a basic time domain unit corresponding to a first index value on a first time-frequency resource subunit in a time-frequency resource unit; the network equipment sends a first synchronization signal on a basic time domain unit corresponding to a second index value on at least one second time frequency resource subunit in the time frequency resource units; wherein the first index value is different from the second index value; the uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, and the second time-frequency resource subunit at least comprises one basic time domain unit with the uplink and downlink attributes to be configured.
Description
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for sending a synchronization signal.
Background
When the terminal is powered on or loses the network, cell search needs to be performed to realize network access. Cell search is mainly achieved based on synchronization signals. The terminal can obtain the time synchronization, the cell identification number and other information of the cell to be accessed according to the synchronization signal. Synchronization signals are generally divided into PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal). The terminal can realize time slot timing and frequency calibration through the PSS, and can realize frame timing and obtain information such as a cell identification number through the SSS.
Currently, 3GPP (3rd Generation Partnership Project) specifies Time domain locations for transmitting PSS and SSS in FDD (Frequency Division Duplex) and TDD (Time Division Duplex) modes. For FDD, in one radio frame, PSS is transmitted over the last OFDM (Orthogonal Frequency Division Multiplexing) symbol of the first slot of subframe 0 and subframe 5; the SSS is transmitted on the same subframe and same slot as the PSS, but the SSS is located on the second last OFDM symbol, one OFDM symbol ahead of the PSS. For TDD, PSS is transmitted on the third OFDM symbol of subframe 1 and subframe 6 in one radio frame; and SSS is transmitted on the last OFDM symbol of the second slot in subframe 0 and subframe 5, 3 OFDM symbols ahead of PSS.
In the above scheme, the PSS or SSS is located on the last OFDM symbol of a slot in a subframe for transmission, and according to a subframe definition refreshed in a 5G (5th Generation, Generation 5 network) NR (New Radio, New air interface), if the PSS or SSS is transmitted on the last OFDM symbol in a slot, only downlink transmission is possible on all symbols in the slot. According to this definition, in FDD mode, the time-frequency resources of one time slot in the radio frame transmitting the synchronization signal are anchored, and in TDD mode, the time-frequency resources of two time slots in the radio frame transmitting the synchronization signal are anchored. Under the circumstances, how to improve the utilization rate of the time-frequency resource becomes an urgent problem to be solved.
Disclosure of Invention
The embodiment of the application provides a method and a device for sending a synchronous signal, which are used for improving the utilization rate of time-frequency resources.
The embodiment of the application provides a method for sending a synchronization signal, which comprises the following steps:
the network equipment sends a first synchronization signal on a basic time domain unit corresponding to a first index value on a first time-frequency resource subunit in a time-frequency resource unit;
the network equipment sends a first synchronization signal on a basic time domain unit corresponding to a second index value on at least one second time frequency resource subunit in the time frequency resource units;
wherein the first index value is different from the second index value; the uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, and the second time-frequency resource subunit at least comprises one basic time domain unit with the uplink and downlink attributes to be configured; and the first index values corresponding to the basic time domain units which send the first synchronization signals in each first time frequency resource subunit are the same, and the second index values corresponding to the basic time domain units which send the first synchronization signals in each second time frequency resource subunit are the same.
According to the method provided by the embodiment of the application, the network equipment sends a first synchronization signal on a basic time domain unit corresponding to a first index value on a first time-frequency resource subunit, and sends the first synchronization signal on a basic time domain unit corresponding to a second index value on a second time-frequency resource subunit; because the first index value of the first synchronization signal sent by the first time-frequency resource subunit is different from the second index value of the first synchronization signal sent by the second time-frequency resource subunit, the number of the anchored time-frequency resource subunits can be reduced, the flexibility of the time-frequency resource subunits can be improved and the utilization rate of the time-frequency resources can be improved on the basis of ensuring the maximum search time delay requirement of the terminal for searching the first synchronization signal.
Optionally, the method further includes:
the network equipment sends a second synchronization signal on a basic time domain unit corresponding to a third index value on a first time-frequency resource subunit in the time-frequency resource units;
the network equipment sends a second synchronization signal on a basic time domain unit corresponding to a fourth index value on at least one second time frequency resource subunit in the time frequency resource units;
wherein the third index value is different from the fourth index value; and the third index values corresponding to the basic time domain units which send the second synchronization signals in each first time-frequency resource subunit are the same, and the fourth index values corresponding to the basic time domain units which send the second synchronization signals in each second time-frequency resource subunit are the same.
Optionally, the first index value is greater than the second index value, or the third index value is greater than the fourth index value.
Optionally, for the first time-frequency resource subunit, the basic time domain unit corresponding to the first index value is a last basic time domain unit in the first time-frequency resource subunit; or
And for the first time-frequency resource subunit, the basic time domain unit corresponding to the third index value is the last basic time domain unit in the first time-frequency resource subunit.
Optionally, for the second time-frequency resource sub-unit, the basic time domain unit corresponding to the second index value is a basic time domain unit adjacent to the basic time domain unit that sends the downlink control signal in the second time-frequency resource sub-unit, and the basic time domain unit corresponding to the fourth index value is a basic time domain unit adjacent to the basic time domain unit corresponding to the second index value in the second time-frequency resource sub-unit.
The embodiment of the application provides a synchronous signal sending device, and the device comprises:
a sending unit, configured to send a first synchronization signal on a basic time domain unit corresponding to a first index value on a first time-frequency resource subunit in a time-frequency resource unit;
the sending unit is configured to send a first synchronization signal on a basic time domain unit corresponding to a second index value on at least one second time-frequency resource subunit in the time-frequency resource units;
wherein the first index value is different from the second index value; the uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, and the second time-frequency resource subunit at least comprises one basic time domain unit with the uplink and downlink attributes to be configured.
Optionally, the sending unit is further configured to:
sending a second synchronization signal on a basic time domain unit corresponding to a third index value on a first time-frequency resource subunit in the time-frequency resource units;
sending a second synchronization signal on a basic time domain unit corresponding to a fourth index value on at least one second time frequency resource subunit in the time frequency resource units;
wherein the third index value is different from the fourth index value.
Optionally, the first index value is greater than the second index value, or the third index value is greater than the fourth index value.
Optionally, for the first time-frequency resource subunit, the basic time domain unit corresponding to the first index value is a last basic time domain unit in the first time-frequency resource subunit; or
And for the first time-frequency resource subunit, the basic time domain unit corresponding to the third index value is the last basic time domain unit in the first time-frequency resource subunit.
Optionally, for the second time-frequency resource sub-unit, the basic time domain unit corresponding to the second index value is a basic time domain unit adjacent to the basic time domain unit that sends the downlink control signal in the second time-frequency resource sub-unit, and the basic time domain unit corresponding to the fourth index value is a basic time domain unit adjacent to the basic time domain unit corresponding to the second index value in the second time-frequency resource sub-unit.
The embodiment of the application provides a synchronous signal sending device, and the device comprises:
the transceiver is used for sending a first synchronization signal on a basic time domain unit corresponding to a first index value on a first time-frequency resource subunit in a time-frequency resource unit;
the transceiver is configured to send a first synchronization signal on a basic time domain unit corresponding to a second index value on at least one second time-frequency resource subunit in the time-frequency resource units;
wherein the first index value is different from the second index value; the uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, and the second time-frequency resource subunit at least comprises one basic time domain unit with the uplink and downlink attributes to be configured; and the first index values corresponding to the basic time domain units which send the first synchronization signals in each first time frequency resource subunit are the same, and the second index values corresponding to the basic time domain units which send the first synchronization signals in each second time frequency resource subunit are the same.
Optionally, the transceiver is further configured to:
sending a second synchronization signal on a basic time domain unit corresponding to a third index value on a first time-frequency resource subunit in the time-frequency resource units;
sending a second synchronization signal on a basic time domain unit corresponding to a fourth index value on at least one second time frequency resource subunit in the time frequency resource units;
wherein the third index value is different from the fourth index value; and the third index values corresponding to the basic time domain units which send the second synchronization signals in each first time-frequency resource subunit are the same, and the fourth index values corresponding to the basic time domain units which send the second synchronization signals in each second time-frequency resource subunit are the same.
Optionally, the first index value is greater than the second index value, or the third index value is greater than the fourth index value.
Optionally, for the first time-frequency resource subunit, the basic time domain unit corresponding to the first index value is a last basic time domain unit in the first time-frequency resource subunit; or
And for the first time-frequency resource subunit, the basic time domain unit corresponding to the third index value is the last basic time domain unit in the first time-frequency resource subunit.
Optionally, for the second time-frequency resource sub-unit, the basic time domain unit corresponding to the second index value is a basic time domain unit adjacent to the basic time domain unit that sends the downlink control signal in the second time-frequency resource sub-unit, and the basic time domain unit corresponding to the fourth index value is a basic time domain unit adjacent to the basic time domain unit corresponding to the second index value in the second time-frequency resource sub-unit.
Drawings
Fig. 1 is a system architecture diagram of an LTE system;
fig. 2 is a schematic flowchart of a method for sending a synchronization signal according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a time-frequency resource unit occupied by a synchronization signal according to an embodiment of the present application;
fig. 4 is a schematic diagram of a time-frequency resource unit occupied by a synchronization signal according to an embodiment of the present application;
fig. 5 is a schematic diagram of a time-frequency resource unit occupied by a synchronization signal according to an embodiment of the present application;
fig. 6 is a schematic diagram of a time-frequency resource unit occupied by a synchronization signal according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a synchronization signal transmitting apparatus according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a synchronization signal transmitting apparatus according to an embodiment of the present application.
Detailed Description
The embodiment of the application can be applied to LTE (Long Term Evolution), a 5G communication system and a future communication system. Fig. 1 is a schematic diagram of a system architecture of an LTE system. The description of the network elements and interfaces in fig. 1 is as follows:
MME (Mobility Management Entity)/S-GW (Serving GateWay): the MME is a key control node in LTE, belongs to a core network element, and is mainly responsible for a signaling processing part, i.e., a control plane function, including functions such as access control, mobility management, attach and detach, session management function, and gateway selection. The S-GW is an important network element of a core network in LTE, and is mainly responsible for a user plane function of user data forwarding, that is, routing and forwarding of data packets are performed under the control of the MME.
eNB (evolved Node B, evolved base station): the eNB is a base station in LTE, and is mainly responsible for functions such as radio resource management, QoS (Quality of Service) management, data compression, and encryption on the air interface side. And towards the core network side, the eNB is mainly responsible for forwarding the control plane signaling to the MME and forwarding the user plane service data to the S-GW.
UE (User Equipment): the UE may have a function of accessing a network side through an access device, such as an eNB, in LTE, or may have a function of transmitting voice or data traffic through wireless transmission with the access device in another network. By way of example, a UE includes, but is not limited to, a mobile station, a fixed or mobile subscriber unit, a pager, a cellular telephone, a Personal Digital Assistant (PDA), a handheld terminal, a laptop computer, or other device that may access a network.
Interface S1: is the standard interface between the eNB and the core network. The eNB is connected with the MME through an S1-MME interface and is used for controlling the transmission of signaling; the eNB is connected with the S-GW through an S1-U interface and is used for transmitting user data. Wherein the S1-MME interface and the S1-U interface are collectively called S1 interface.
X2 interface: and the standard interface between the eNB and the eNB is used for realizing the intercommunication between the base stations.
A Uu interface: the Uu interface is a radio interface between the UE and the base station, and the UE accesses the LTE network through the Uu interface.
Currently, attention is paid to a D-TDD (Dynamic Time Division Duplex) technology. D-TDD refers to flexibly and rapidly switching uplink and downlink of a TDD subframe according to the uplink and downlink traffic load in a network, so as to match the specific traffic demand in the network to improve the throughput of the uplink and downlink traffic in the network.
In order to improve the flexibility of the D-TDD and enable uplink and downlink of the D-TDD to be more flexibly and timely adapted to various different service requirements, a dynamic subframe technology is proposed in the discussion of the 3GPP NR standard. The up and down lines of the dynamic sub-frame are not anchored, but can be dynamically adjusted by the network side according to the needs, thereby reducing the delay of service data transmission and increasing the throughput of the cell.
Based on the above description, as shown in fig. 2, a flow diagram of a method for sending a synchronization signal according to an embodiment of the present application is provided.
Referring to fig. 2, the method includes:
step 201: the network equipment sends a first synchronization signal on a basic time domain unit corresponding to a first index value on a first time-frequency resource subunit in a time-frequency resource unit.
Step 202: the network equipment sends a first synchronization signal on a basic time domain unit corresponding to a second index value on at least one second time frequency resource subunit in the time frequency resource units; wherein the first index value is different from the second index value.
The expression "at least one second time-frequency resource subunit" means that the basic time domain unit corresponding to the second index value on all or part of the second time-frequency resource subunits in the time-frequency resource units is used for transmitting the first synchronization signal.
The uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, and the second time-frequency resource subunit at least comprises one basic time domain unit with the uplink and downlink attributes to be configured. And the first index values corresponding to the basic time domain units which send the first synchronization signals in each first time frequency resource subunit are the same, and the second index values corresponding to the basic time domain units which send the first synchronization signals in each second time frequency resource subunit are the same.
In steps 201 and 202, the network device may refer to an eNB or a device having an eNB function, which is not limited in this embodiment of the present application.
In this embodiment, one time-frequency resource unit may include M consecutive time-frequency resource sub-units, each time-frequency resource sub-unit may include N basic time-domain units, and M, N is a natural number. The values of M and N may be determined according to actual conditions, and are not limited herein. Correspondingly, the number of the first time-frequency resource subunit and the second time-frequency resource subunit included in one time-frequency resource unit may be determined according to an actual situation, which is not limited in the embodiment of the present application.
In this embodiment, the time-frequency resource unit may be a resource unit having a radio frame structure in an FDD mode or a TDD mode, or a resource unit having a radio frame structure similar to that in an FDD mode or a TDD mode. Correspondingly, one time-frequency resource sub-unit may be a resource unit of a subframe structure in a radio frame having an FDD mode or a TDD mode. The basic time domain unit included in each time-frequency resource subunit may refer to OFDM symbols, SC-FDMA (Single carrier frequency Division multiple access) symbols, and other symbols, which are not limited in this embodiment of the present application.
In this embodiment of the present application, the uplink and downlink attribute of each basic time domain unit indicates that the basic time domain unit is an uplink time domain unit (i.e., a time domain unit for uplink transmission) or a downlink time domain unit (i.e., a time domain unit for downlink transmission). The uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, which means that the uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are agreed by a protocol or agreed by network equipment and a terminal, and cannot be changed. For example, in the TDD mode, subframes with subframe numbers # 0, #1, and #5 in a radio frame are downlink subframes no matter what uplink and downlink subframe matching mode, and subframes with subframe numbers # 2 are uplink subframes no matter what uplink and downlink subframe matching mode, and uplink and downlink attributes of these subframes are preconfigured. In the embodiment of the present application, when the uplink and downlink attributes of the basic time domain unit are preconfigured, the preconfigured meanings may be the same as the meanings of the above examples.
For another example, one first time domain resource subunit includes 14 basic time domain units, where the uplink and downlink attributes of the basic time domain units corresponding to index values 0, 1, 2, 3, 4, and 5 are preconfigured as an uplink; the uplink and downlink attributes of the basic time domain units with the index values of 6-13 are pre-configured as the downlink. Under the above configuration, in any case, the basic time domain units with index values of 0, 1, 2, 3, 4, and 5 can only be used for uplink transmission, and the basic time domain units with index values of 6 to 13 can only be used for downlink transmission.
It should be noted that the index value of the basic time domain unit is the position number of the basic time domain unit in the time-frequency resource subunit where the basic time domain unit is located, and may indicate the position of the basic time domain unit in the time-frequency resource subunit where the basic time domain unit is located. Meanwhile, in the embodiment of the application, the index value of each basic time domain unit in the time-frequency resource subunit is gradually increased along with time, that is, the index value of the previous basic time domain unit in the time-frequency resource subunit is greater than the index value of the subsequent basic time domain unit in the time-frequency resource subunit. For example, if one time-frequency resource sub-unit includes 7 basic time-domain units, a basic time-domain unit with an index value of 0 indicates that the basic time-domain unit is the first basic time-domain unit in the time-frequency resource sub-unit, and a basic time-domain unit with an index value of 3 indicates that the basic time-domain unit is the fourth basic time-domain unit in the time-frequency resource sub-unit.
Correspondingly, in this embodiment of the application, the second time-frequency resource subunit includes at least one basic time domain unit whose uplink and downlink attributes are to be configured, and the uplink and downlink attributes of other basic time domain units, except the uplink and downlink attributes of the basic time domain unit to be configured, in the second time-frequency resource subunit may be preconfigured. The uplink and downlink attributes of the basic time domain unit to be configured are variable, and can be flexibly changed according to actual conditions, so that the network device is required to determine whether the basic time domain unit to be configured is uplink or downlink before the basic time domain unit to be configured is sent, and specifically, the network device can determine the basic time domain unit to be configured according to actual conditions. For example, in the TDD mode, subframes with subframe numbers # 3, #4, #6, #7, #8, and #9 in a radio frame may be uplink subframes or downlink subframes, and are determined according to different uplink and downlink subframe allocation patterns, and uplink and downlink attributes of the subframes are to be configured. In this embodiment of the present application, when the uplink and downlink attributes of the basic time domain unit are to be configured, the meaning of the to-be-configured unit may be the same as that of the above example.
For another example, one second time domain resource subunit includes 14 basic time domain units, where the uplink and downlink attributes of the basic time domain units corresponding to index values 0, 1, 2, and 3 are preconfigured; and the uplink and downlink attributes of the other basic time domain units are to be configured. Before the network device sends the second time domain subunit, it needs to determine whether the basic time domain unit corresponding to the index value 4 to 13 in the basic time domain unit in the second time domain subunit is uplink or downlink.
It should be noted that, in this embodiment of the present application, the network device may send, to the terminal through a signaling, the result of the uplink and downlink configuration whose uplink and downlink attributes are the basic time domain units to be configured. For example, the information may be transmitted to the terminal through DCI (Downlink Control information) or RRC (Radio Resource Control) signaling.
In this embodiment, in a possible implementation manner, the network device only sends the first synchronization signal, where the first synchronization signal may at least include all functions of the PSS and the SSS, and at this time, the first synchronization signal sent by the network device may be used to instruct the terminal to determine an intra-physical cell group identifier, a 5ms timing of the physical cell, a physical cell group identifier, a cyclic prefix configuration (whether a normal cyclic prefix or an extended cyclic prefix), and a system frame timing (i.e., a position of subframe 0 in the system frame). Of course, the above is only an example, and the first synchronization signal may also indicate other information for the terminal to determine the cell, which is not described herein again.
In another possible implementation, the network device needs to transmit the first synchronization signal and the second synchronization signal. At this time, the first synchronization signal may include at least all functions of the PSS; the second synchronization signal may comprise at least all functions of the SSS. Namely, the first synchronization signal sent by the network device may be used to instruct the terminal to determine the identifier in the physical cell group, and the 5ms timing (timing) of the physical cell; the second synchronization signal sent by the network device may be used to instruct the terminal to determine a physical cell group identifier, a cyclic prefix configuration (whether a normal cyclic prefix or an extended cyclic prefix), and a system frame timing (i.e., a location of subframe 0 in the system frame). Of course, the above are only examples, and the first synchronization signal and the second synchronization signal may also indicate the terminal to determine other information of the cell, which is not described herein again.
In this implementation, the network device may send the second synchronization signal on a basic time domain unit corresponding to the third index value on the first time-frequency resource subunit; the network device may send the second synchronization signal on a basic time domain unit corresponding to the fourth index value on the at least one second time-frequency resource subunit; wherein the third index value is different from the fourth index value. And the third index values corresponding to the basic time domain units which send the second synchronization signals in each first time-frequency resource subunit are the same, and the fourth index values corresponding to the basic time domain units which send the second synchronization signals in each second time-frequency resource subunit are the same.
In this embodiment of the present application, the numbers of the first time-frequency resource sub-units and the second time-frequency resource sub-units used by the network device to send the first synchronization signal and the second synchronization signal may be predetermined by a protocol, or may be predetermined by a sender and a receiver, which is not limited in this embodiment of the present application.
In a possible implementation, the network device sends the first synchronization signal on all first time-frequency resource sub-units in the time-frequency resource units, and sends the second synchronization signal on at least one second time-frequency resource sub-unit in the time-frequency resource units.
Of course, the above is only an example, and the number of the first time-frequency resource sub-units and the second time-frequency resource sub-units used by the network device to transmit the first synchronization signal and the second synchronization signal may also have other forms, which are not illustrated here.
It should be noted that, although the number of the first time-frequency resource sub-unit and the second time-frequency resource sub-unit used by the network device to transmit the first synchronization signal and the second synchronization signal and the functions of the first synchronization signal and the second synchronization signal have been described, those skilled in the art may make various changes and modifications to the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, in subsequent protocol evolutions, the present embodiments are intended to include such modifications and variations, provided they come within the scope of the present claims.
In step 201 and step 202, the positions of the basic time domain units, in which the network device sends the first synchronization signal and the second synchronization signal on the time frequency resource subunit, in the time frequency resource subunit may be determined according to actual situations.
In a first possible implementation manner, an index value of a basic time domain unit of the network device that sends the first synchronization signal on a first time-frequency resource subunit in the time-frequency resource units is greater than an index value of a basic time domain unit that sends the first synchronization signal on at least one second time-frequency resource subunit in the time-frequency resource units; or, the index value of the basic time domain unit that the network device sends the second synchronization signal on the first time-frequency resource sub-unit in the time-frequency resource units is greater than the index value of the basic time domain unit that sends the second synchronization signal on at least one second time-frequency resource sub-unit in the time-frequency resource units, that is, the first index value is greater than the second index value, or the third index value is greater than the fourth index value.
In the method, when the first index value is greater than the second index value, it can be ensured that at least one first synchronization signal is not transmitted on the last basic time domain unit, so that the uplink and downlink attributes of the basic time domain unit located behind the basic time domain unit transmitting the first synchronization signal in the first time-frequency resource subunit or the second time-frequency resource subunit can be flexibly changed, and the resource utilization rate of the system is improved. Correspondingly, when the third index value is greater than the fourth index value, it can be ensured that at least one second synchronization signal is not sent on the last basic time domain unit, so that the uplink and downlink attributes of the basic time domain unit located behind the basic time domain unit sending the second synchronization signal in the first time-frequency resource subunit or the second time-frequency resource subunit can be flexibly changed, and the utilization rate of system resources is improved.
For example, for a first time-frequency resource sub-unit, the basic time domain unit corresponding to the first index value is the last basic time domain unit in the first time-frequency resource sub-unit, and the basic time domain unit corresponding to the third index value is the last basic time domain unit in the first time-frequency resource sub-unit. And aiming at the second time-frequency resource subunit, the basic time domain unit corresponding to the fourth index value is the fourth basic time domain unit in the time-frequency resource subunit, and the basic time domain unit corresponding to the third index value is the third basic time domain unit in the time-frequency resource subunit. Specifically, as shown in fig. 3, a schematic diagram of a time-frequency resource unit occupied by a synchronization signal according to an embodiment of the present application is shown. In fig. 3, the time-frequency resource unit includes 10 time-frequency resource subunits, the first time-frequency resource subunit is located at the 1 st position of the time-frequency resource unit, the second time-frequency resource subunit is located at the 6 th position of the time-frequency resource unit, and each time-frequency resource subunit includes 14 basic time-domain units. The network equipment sends a first synchronization signal on the last basic time domain unit of the first time-frequency resource unit and sends a second synchronization signal on the last basic time domain unit of the first time-frequency resource unit; the network device sends the first synchronization signal on the fourth basic time domain unit of the second time frequency resource unit and sends the second synchronization signal on the third basic time domain unit of the second time frequency resource unit.
For another example, as shown in fig. 4, a schematic diagram of a time-frequency resource unit occupied by a synchronization signal according to an embodiment of the present application is shown. In fig. 4, the time-frequency resource unit includes N time-frequency resource subunits, the first time-frequency resource subunit is located at the h-th position of the time-frequency resource unit, h is less than or equal to N, the second time-frequency resource subunit is located at the k-th position of the time-frequency resource unit, k is less than or equal to N, and h is not equal to k, and each time-frequency resource subunit includes M basic time-domain units. The network equipment sends a first synchronization signal on a basic time domain unit corresponding to the index value i of the first time-frequency resource unit and sends a second synchronization signal on a basic time domain unit corresponding to the index value j of the first time-frequency resource unit; the network equipment sends a first synchronization signal on a basic time domain unit corresponding to the index value p of the second time frequency resource unit, and sends a second synchronization signal on a basic time domain unit corresponding to the index value q of the second time frequency resource unit. Wherein i is greater than j and p is greater than q. h, k, j, i, q, p, N and M are integers greater than or equal to 0.
Of course, the above is only an example, and for the first time-frequency resource subunit, the basic time domain unit corresponding to the first index value may also be a last basic time domain unit in the first time-frequency resource subunit, or for the first time-frequency resource subunit, the basic time domain unit corresponding to the third index value is a last basic time domain unit in the first time-frequency resource subunit.
In the method, if the basic time domain unit corresponding to the first index value is also the last basic time domain unit in the first time-frequency resource subunit, or the basic time domain unit corresponding to the third index value is the last basic time domain unit in the first time-frequency resource subunit, the terminal may determine the boundary of the first time-frequency resource subunit while detecting the position of the first synchronization signal or the second synchronization signal, thereby simplifying the complexity of the terminal side detection.
In a second possible implementation manner, the index value of the basic time domain unit of the network device that sends the first synchronization signal on the first time-frequency resource subunit in the time-frequency resource units is greater than the index value of the basic time domain unit that sends the first synchronization signal on the second time-frequency resource subunit; or, the index value of the basic time domain unit that the network device sends the second synchronization signal on the first time-frequency resource sub-unit in the time-frequency resource units is smaller than the index value of the basic time domain unit that sends the second synchronization signal on at least one second time-frequency resource sub-unit in the time-frequency resource units, that is, the first index value is larger than the second index value, or the third index value is smaller than the fourth index value.
In a third possible implementation manner, the index value of the basic time domain unit of the network device that sends the first synchronization signal on the first time-frequency resource subunit in the time-frequency resource units is smaller than the index value of the basic time domain unit that sends the first synchronization signal on at least one second time-frequency resource subunit in the time-frequency resource units; or, the index value of the basic time domain unit that the network device sends the second synchronization signal on the first time-frequency resource sub-unit in the time-frequency resource units is smaller than the index value of the basic time domain unit that sends the second synchronization signal on at least one second time-frequency resource sub-unit in the time-frequency resource units, that is, the first index value is smaller than the second index value, or the third index value is smaller than the fourth index value.
In a fourth possible implementation manner, the index value of the basic time domain unit of the network device that sends the first synchronization signal on the first time-frequency resource subunit in the time-frequency resource units is smaller than the index value of the basic time domain unit that sends the first synchronization signal on at least one second time-frequency resource subunit in the time-frequency resource units; or, the index value of the basic time domain unit that the network device sends the second synchronization signal on the first time-frequency resource sub-unit in the time-frequency resource units is greater than the index value of the basic time domain unit that sends the second synchronization signal on at least one second time-frequency resource sub-unit in the time-frequency resource units, that is, the first index value is smaller than the second index value, or the third index value is greater than the fourth index value.
In the second possible implementation manner to the fourth possible implementation manner, it may be ensured that at least one first synchronization signal or second synchronization signal is not sent on the last basic time domain unit, so that uplink and downlink attributes of the basic time domain unit after the basic time domain unit that sends the first synchronization signal or the second synchronization signal may be flexibly changed, and the utilization rate of system resources may be improved.
Optionally, in this embodiment of the application, a basic time domain unit of the network device that sends the first synchronization signal or the second synchronization signal is adjacent to a basic time domain unit that sends the downlink control signal and is located behind the basic time domain unit that sends the downlink control signal. By the method, the basic time domain unit for sending the downlink control signal is the first basic time domain unit of the time frequency resource subunit, so that the basic time domain unit for sending the first synchronization signal or the second synchronization signal is positioned on the previous basic time domain units in the time frequency resource subunit, and when the method provided by the embodiment of the application is applied to the D-TDD technology, the time frequency resource unit for sending the first synchronization signal or the second synchronization signal can be prevented from being anchored as the downlink time frequency resource, so that the uplink and downlink attributes of the basic time domain unit behind the basic time domain unit for sending the first synchronization signal or the second synchronization signal can be flexibly changed, the variable time frequency resource in the time frequency resource unit can be maximized as much as possible, and the utilization rate of the time frequency resource is improved.
For example, for the second time-frequency resource sub-unit, the basic time domain unit corresponding to the second index value is a basic time domain unit adjacent to the basic time domain unit that sends the downlink control signal in the second time-frequency resource sub-unit, and the basic time domain unit corresponding to the fourth index value is a basic time domain unit adjacent to the basic time domain unit corresponding to the second index value in the second time-frequency resource sub-unit.
In conjunction with the foregoing description, for example, as shown in fig. 5, a schematic diagram of a time-frequency resource unit occupied by a synchronization signal according to an embodiment of the present application is provided. In fig. 5, the time-frequency resource unit includes 10 time-frequency resource sub-units, the second time-frequency resource sub-unit is located at the 6 th position of the time-frequency resource unit, and each time-frequency resource sub-unit includes 14 basic time-domain units. The network device sends downlink control signals on a first basic time domain unit and a second basic time domain unit of the second time frequency resource unit, and at the moment, the network device can send a first synchronization signal on a fourth basic time domain unit of the second time frequency resource unit and send a second synchronization signal on a third basic time domain unit of the second time frequency resource unit, so that the variable time frequency resources in the time frequency resource units can be maximized as far as possible on the premise of not influencing the unified design of a control channel, and the utilization rate of the time frequency resources is improved.
In the embodiment of the application, the terminal detects the first synchronization signal and the second synchronization signal in a blind detection mode at positions where the first synchronization signal and the second synchronization signal may appear.
Because the positions of the basic time domain units, which are used by the network device to send the first synchronization signals, in the first time-frequency resource subunit and the second time-frequency resource subunit are fixed, and meanwhile, the duration of each time-frequency resource subunit is also fixed, when the lengths of Cyclic Prefixes (CP) in the time-frequency resource subunits are different, the time length of the interval between two consecutive first synchronization signals will change. Therefore, the terminal can determine the length of the CP according to the detected time length of the interval between two consecutive first synchronization signals after detecting the first synchronization signal.
For example, the time-frequency resource sub-unit has a duration length of 1ms, the normal (normal) CP has a length of 4.687us, and the extended (extended) CP has a length of 16.67 us. As shown in fig. 6, the time-frequency resource unit includes 10 time-frequency resource subunits, and the duration length of the time-frequency resource subunit is 1 ms. The network equipment sends a first synchronization signal on the last basic time domain unit of the time frequency resource unit corresponding to the index value of # 0; and the network equipment transmits the first synchronization signal on the fourth basic time domain unit of the time frequency resource unit with the index value of # 5. Therefore, there are 4 cases in the time length of the interval between two consecutive first synchronization signals:
in the first case: when two first synchronization signals are located in the same time frequency resource unit and a normal CP is transmitted in the time frequency resource unit, the time length of an interval between two consecutive first synchronization signals is 4.286 ms. Referring to fig. 6, in this case, 4 time-frequency resource sub-units, 4 basic time-domain units, and 4 normal CPs exist between two consecutive first synchronization signals, and the time length of the interval between two consecutive first synchronization signals in this case may be determined according to the duration lengths of the time-frequency resource sub-units, the basic time-domain units, and the normal CPs. The following cases do not describe the above process in detail.
In the second case: when two first synchronization signals are located in the same time frequency resource unit and the extended CP is sent in the time frequency resource unit, the time length of the interval between two consecutive first synchronization signals is 4.333 ms.
In the third case: when two first synchronization signals are located in different time frequency resource units and a normal CP is transmitted in each time frequency resource unit, the time length of an interval between two consecutive first synchronization signals is 5.714 ms.
In a fourth case: when two first synchronization signals are located in different time frequency resource units and an extended CP is transmitted in each time frequency resource unit, the time length of an interval between two consecutive first synchronization signals is 5.667 ms.
Therefore, in conjunction with fig. 6, when the terminal detects that the time length of the interval between two consecutive first synchronization signals is 4.286ms, it can be determined that the CP is a normal CP, and it can also be determined that the two first synchronization signals are located in the same time domain resource unit. When the terminal detects that the time length of the interval between two consecutive first synchronization signals is 4.333ms, it can determine that the CP is an extended CP, and also can determine that the two first synchronization signals are located in the same time domain resource unit. When the terminal detects that the time length of the interval between two consecutive first synchronization signals is 4.714ms, it can determine that the CP is a normal CP, and at the same time, it can also determine that the two first synchronization signals are not located in the same time domain resource unit. When the terminal detects that the time length of the interval between two consecutive first synchronization signals is 4.667ms, it may be determined that the CP is an extended CP, and it may also be determined that the two first synchronization signals are not located in the same time domain resource unit.
Based on the same technical concept, the embodiment of the present application further provides a synchronization signal transmitting apparatus, which can execute the above method embodiments.
As shown in fig. 7, a schematic structural diagram of a synchronization signal transmitting apparatus is provided for an embodiment of the present application, where the apparatus includes:
a sending unit 701, configured to send a first synchronization signal on a basic time domain unit corresponding to a first index value on a first time-frequency resource subunit in a time-frequency resource unit;
the sending unit 701 is configured to send a first synchronization signal on a basic time domain unit corresponding to a second index value on at least one second time-frequency resource subunit in the time-frequency resource units;
wherein the first index value is different from the second index value; the uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, and the second time-frequency resource subunit at least comprises one basic time domain unit with the uplink and downlink attributes to be configured; and the first index values corresponding to the basic time domain units which send the first synchronization signals in each first time frequency resource subunit are the same, and the second index values corresponding to the basic time domain units which send the first synchronization signals in each second time frequency resource subunit are the same.
Optionally, the sending unit 701 is further configured to:
sending a second synchronization signal on a basic time domain unit corresponding to a third index value on a first time-frequency resource subunit in the time-frequency resource units;
sending a second synchronization signal on a basic time domain unit corresponding to a fourth index value on at least one second time frequency resource subunit in the time frequency resource units;
wherein the third index value is different from the fourth index value; and the third index values corresponding to the basic time domain units which send the second synchronization signals in each first time-frequency resource subunit are the same, and the fourth index values corresponding to the basic time domain units which send the second synchronization signals in each second time-frequency resource subunit are the same.
Optionally, the first index value is greater than the second index value, or the third index value is greater than the fourth index value.
Optionally, for the first time-frequency resource subunit, the basic time domain unit corresponding to the first index value is a last basic time domain unit in the first time-frequency resource subunit; or
And for the first time-frequency resource subunit, the basic time domain unit corresponding to the third index value is the last basic time domain unit in the first time-frequency resource subunit.
Optionally, for the second time-frequency resource sub-unit, the basic time domain unit corresponding to the second index value is a basic time domain unit adjacent to the basic time domain unit that sends the downlink control signal in the second time-frequency resource sub-unit, and the basic time domain unit corresponding to the fourth index value is a basic time domain unit adjacent to the basic time domain unit corresponding to the second index value in the second time-frequency resource sub-unit.
Based on the same technical concept, the embodiment of the present application further provides a synchronization signal transmitting apparatus, which can execute the above method embodiments.
As shown in fig. 8, a schematic structural diagram of a synchronization signal transmitting apparatus is provided for an embodiment of the present application, where the apparatus includes: a processor 801, a memory 802, a transceiver 803.
The memory 802 is used to store computer instructions.
The processor 801 is configured to execute computer instructions stored in the memory 802.
A transceiver 803, configured to send a first synchronization signal in a basic time domain unit corresponding to a first index value in a first time-frequency resource subunit in a time-frequency resource unit;
the transceiver 803 is configured to send a first synchronization signal in a basic time domain unit corresponding to a second index value in at least one second time-frequency resource sub-unit in the time-frequency resource units;
wherein the first index value is different from the second index value; the uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, and the second time-frequency resource subunit at least comprises one basic time domain unit with the uplink and downlink attributes to be configured; and the first index values corresponding to the basic time domain units which send the first synchronization signals in each first time frequency resource subunit are the same, and the second index values corresponding to the basic time domain units which send the first synchronization signals in each second time frequency resource subunit are the same.
Optionally, the transceiver 803 is further configured to:
sending a second synchronization signal on a basic time domain unit corresponding to a third index value on a first time-frequency resource subunit in the time-frequency resource units;
sending a second synchronization signal on a basic time domain unit corresponding to a fourth index value on at least one second time frequency resource subunit in the time frequency resource units;
wherein the third index value is different from the fourth index value; and the third index values corresponding to the basic time domain units which send the second synchronization signals in each first time-frequency resource subunit are the same, and the fourth index values corresponding to the basic time domain units which send the second synchronization signals in each second time-frequency resource subunit are the same.
Optionally, the first index value is greater than the second index value, or the third index value is greater than the fourth index value.
Optionally, for the first time-frequency resource subunit, the basic time domain unit corresponding to the first index value is a last basic time domain unit in the first time-frequency resource subunit; or
And for the first time-frequency resource subunit, the basic time domain unit corresponding to the third index value is the last basic time domain unit in the first time-frequency resource subunit.
Optionally, for the second time-frequency resource sub-unit, the basic time domain unit corresponding to the second index value is a basic time domain unit adjacent to the basic time domain unit that sends the downlink control signal in the second time-frequency resource sub-unit, and the basic time domain unit corresponding to the fourth index value is a basic time domain unit adjacent to the basic time domain unit corresponding to the second index value in the second time-frequency resource sub-unit.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, to the extent that such modifications and variations of the present application fall within the scope of the claims of the present application, it is intended that the present application also encompass such modifications and variations.
Claims (10)
1. A method for transmitting a synchronization signal, the method comprising:
the network equipment sends a first synchronization signal on a basic time domain unit corresponding to a first index value on a first time-frequency resource subunit in a time-frequency resource unit;
the network equipment sends a first synchronization signal on a basic time domain unit corresponding to a second index value on at least one second time frequency resource subunit in the time frequency resource units;
wherein the first index value is different from the second index value; the uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, and the second time-frequency resource subunit at least comprises one basic time domain unit with the uplink and downlink attributes to be configured; and the first index values corresponding to the basic time domain units which send the first synchronization signals in each first time frequency resource subunit are the same, and the second index values corresponding to the basic time domain units which send the first synchronization signals in each second time frequency resource subunit are the same.
2. The method of claim 1, further comprising:
the network equipment sends a second synchronization signal on a basic time domain unit corresponding to a third index value on a first time-frequency resource subunit in the time-frequency resource units;
the network equipment sends a second synchronization signal on a basic time domain unit corresponding to a fourth index value on at least one second time frequency resource subunit in the time frequency resource units;
wherein the third index value is different from the fourth index value; and the third index values corresponding to the basic time domain units which send the second synchronization signals in each first time-frequency resource subunit are the same, and the fourth index values corresponding to the basic time domain units which send the second synchronization signals in each second time-frequency resource subunit are the same.
3. The method of claim 2, wherein the first index value is greater than the second index value, or wherein the third index value is greater than the fourth index value.
4. The method according to claim 2 or 3, wherein for the first time-frequency resource sub-unit, the basic time domain unit corresponding to the first index value is the last basic time domain unit in the first time-frequency resource sub-unit; or
And for the first time-frequency resource subunit, the basic time domain unit corresponding to the third index value is the last basic time domain unit in the first time-frequency resource subunit.
5. The method according to claim 2 or 3, wherein for the second time-frequency resource sub-unit, the basic time domain unit corresponding to the second index value is a basic time domain unit adjacent to the basic time domain unit for transmitting the downlink control signal in the second time-frequency resource sub-unit, and the basic time domain unit corresponding to the fourth index value is a basic time domain unit adjacent to the basic time domain unit corresponding to the second index value in the second time-frequency resource sub-unit.
6. A synchronization signal transmission apparatus, comprising:
a sending unit, configured to send a first synchronization signal on a basic time domain unit corresponding to a first index value on a first time-frequency resource subunit in a time-frequency resource unit;
the sending unit is configured to send a first synchronization signal on a basic time domain unit corresponding to a second index value on at least one second time-frequency resource subunit in the time-frequency resource units;
wherein the first index value is different from the second index value; the uplink and downlink attributes of each basic time domain unit in the first time-frequency resource subunit are pre-configured, and the second time-frequency resource subunit at least comprises one basic time domain unit with the uplink and downlink attributes to be configured; and the first index values corresponding to the basic time domain units which send the first synchronization signals in each first time frequency resource subunit are the same, and the second index values corresponding to the basic time domain units which send the first synchronization signals in each second time frequency resource subunit are the same.
7. The apparatus of claim 6, wherein the sending unit is further configured to:
sending a second synchronization signal on a basic time domain unit corresponding to a third index value on a first time-frequency resource subunit in the time-frequency resource units;
sending a second synchronization signal on a basic time domain unit corresponding to a fourth index value on at least one second time frequency resource subunit in the time frequency resource units;
wherein the third index value is different from the fourth index value; and the third index values corresponding to the basic time domain units which send the second synchronization signals in each first time-frequency resource subunit are the same, and the fourth index values corresponding to the basic time domain units which send the second synchronization signals in each second time-frequency resource subunit are the same.
8. The apparatus of claim 7, wherein the first index value is greater than the second index value, or wherein the third index value is greater than the fourth index value.
9. The apparatus according to claim 7 or 8, wherein for the first time-frequency resource sub-unit, the basic time-domain unit corresponding to the first index value is the last basic time-domain unit in the first time-frequency resource sub-unit; or
And for the first time-frequency resource subunit, the basic time domain unit corresponding to the third index value is the last basic time domain unit in the first time-frequency resource subunit.
10. The apparatus according to claim 7 or 8, wherein for the second time-frequency resource sub-unit, the basic time domain unit corresponding to the second index value is a basic time domain unit adjacent to the basic time domain unit that transmits the downlink control signal in the second time-frequency resource sub-unit, and the basic time domain unit corresponding to the fourth index value is a basic time domain unit adjacent to the basic time domain unit corresponding to the second index value in the second time-frequency resource sub-unit.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997636A (en) * | 2009-08-17 | 2011-03-30 | 大唐移动通信设备有限公司 | Method and device for transmitting channel quality indication information of multi-user equipment |
| CN103795668A (en) * | 2012-11-02 | 2014-05-14 | 电信科学技术研究院 | Signal processing method, base station, terminal and system |
| CN104009827A (en) * | 2013-02-22 | 2014-08-27 | 电信科学技术研究院 | Transmission method for UE special-purpose demodulation reference signal and devices |
| CN104349464A (en) * | 2013-07-29 | 2015-02-11 | 中国移动通信集团公司 | Method and apparatus for sending synchronizing signal and method and apparatus for determining carrier type |
| CN105101300A (en) * | 2014-05-09 | 2015-11-25 | 中兴通讯股份有限公司 | Competition-based resource selecting method and apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5799872B2 (en) * | 2012-03-28 | 2015-10-28 | 富士通株式会社 | Optical transmitter, optical receiver, and optical transmission method |
| CN103581932B (en) * | 2012-08-09 | 2019-04-05 | 中兴通讯股份有限公司 | A kind of method for measuring pilot frequency and device |
| ES2790682T3 (en) * | 2013-11-27 | 2020-10-28 | Lg Electronics Inc | Method of scanning resources for direct device-to-device communication in a wireless communication system and apparatus for it |
| CN104734763A (en) * | 2013-12-20 | 2015-06-24 | 中兴通讯股份有限公司 | Method, system and device for indicating and receiving uplink wave beam index |
| CN105744639B (en) * | 2014-12-10 | 2018-07-13 | 中兴通讯股份有限公司 | Random access configuration information sending, receiving method and device |
-
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-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997636A (en) * | 2009-08-17 | 2011-03-30 | 大唐移动通信设备有限公司 | Method and device for transmitting channel quality indication information of multi-user equipment |
| CN103795668A (en) * | 2012-11-02 | 2014-05-14 | 电信科学技术研究院 | Signal processing method, base station, terminal and system |
| CN104009827A (en) * | 2013-02-22 | 2014-08-27 | 电信科学技术研究院 | Transmission method for UE special-purpose demodulation reference signal and devices |
| CN104349464A (en) * | 2013-07-29 | 2015-02-11 | 中国移动通信集团公司 | Method and apparatus for sending synchronizing signal and method and apparatus for determining carrier type |
| CN105101300A (en) * | 2014-05-09 | 2015-11-25 | 中兴通讯股份有限公司 | Competition-based resource selecting method and apparatus |
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