Signal transmission method, signal detection method and apparatuses thereof and communication system
A signal transmission method, signal detection method and apparatuses thereof and communication system. The signal transmission apparatus includes a transmitting unit configured to transmit a synchronization signal (SS) block to a user equipment within a time window of a predetermined position in an SS block transmission period. Hence, UE cell search and measurement time is reduced, complexity at the UE is lowered, power consumption of the UE is lowered, cell handover is sped up, communication interruption is avoided, and currently at least one of existing problems is solved.
1. A signal transmission apparatus, configured in a first network device, comprising:
a memory that stores a plurality of instructions; and
a processor coupled to the memory and configured to execute the instructions to:
select a predetermined position of a time window for a synchronization signal (SS) block transmission from a plurality of predetermined positions of the time window;
transmit an indication information indicating the predetermined position to a user equipment (UE); wherein, the predetermined position is indicated by the SS block transmission period and a time length from a starting position of the SS block transmission period;
transmit the SS block to the UE within the time window of the predetermined position in an SS block transmission period;
transmit measurement timing configuration information of the SS block to a second network device of a neighboring cell, the measurement timing configuration information comprising the predetermined position, and
wherein the predetermined position is located in a former half or a latter half of each frame in the SS block transmission period, a length of the time window of the predetermined position is 5 ms.
2. The apparatus according to claim 1 , wherein there exists at least one common predetermined position among predetermined positions to which SS block transmission periods with different lengths correspond,
or, when the number of frequency carriers relevant to measurement is one or more and each frequency carrier is able to support a predetermined number of SS block transmission periods, for SS block transmission periods with different lengths that are able to be supported by a frequency carrier, there exists at least one common predetermined position,
or, for SS block transmission periods with different lengths that are able to be supported by different frequency carriers, there exists at least one common predetermined position.
3. The apparatus according to claim 1 , wherein predetermined positions of SS block transmission periods with identical lengths are identical,
or, when the number of frequency carriers relevant to measurement is one or more and each frequency carrier is able to support a predetermined number of SS block transmission periods, for an SS block transmission period of a frequency carrier, the predetermined positions of the SS block transmission period are identical.
4. The apparatus according to claim 1 , wherein within the SS block transmission period, a starting position of the predetermined position is a starting position of the SS block transmission period, or a position after the starting position of the SS block transmission period spaced apart by a length of the time window.
5. The apparatus according to claim 1 , wherein the predetermined position is a former position or a latter position of a starting frame in the SS block transmission period.
6. The apparatus according to claim 1 , wherein the SS block transmission period is an SS burst set transmission period, or a time interval of a predetermined length.
7. The apparatus according to claim 1 , wherein the processor is further configured to execute the instructions to:
store a predetermined SS block transmission period and a corresponding predetermined position thereof.
8. The apparatus according to claim 1 , wherein the processor is further configured to execute the instructions to: configure the predetermined position.
9. The apparatus according to claim 8 , wherein the processor is further configured to execute the instructions to: notify the UE of the configured predetermined position.
10. A signal transmission apparatus, configured in a second network device of a neighboring cell, comprising:
a memory that stores a plurality of instructions; and
a processor coupled to the memory and configured to execute the instructions to:
receive measurement timing configuration information transmitted by a first network device of a serving cell, the measurement timing configuration information comprising predetermined position of a time window transmitting an SS block; and
adjust a position of a time window transmitting one or more SS blocks of an own cell to be identical to the predetermined position according to the measurement timing configuration information, and
wherein the predetermined position is located in a former half or a latter half of each frame in an SS block transmission period, a length of the time window of the predetermined position is 5 ms.
11. The apparatus according to claim 10 , wherein when there exists a system frame number deviation between the serving cell and the own cell, the processor adjusts the position of the time window to the predetermined position, to correct the system frame number deviation.
12. The apparatus according to claim 1 , wherein the measurement timing configuration information further comprises cell ID and periodicity information of the SS block transmission period of the first network device.
13. The apparatus according to claim 10 , wherein the measurement timing configuration information further comprises cell ID and periodicity information of the SS block transmission period of the first network device.