Methods and apparatuses for information transmission and information reception
Embodiments of the present disclosure relate to methods and apparatuses of transmitting information and receiving information in a wireless communication system. In the method of transmitting information, the information comprises at least two of a reference signal and more than one radio resource control (RRC) message. The method comprises transmitting the at least two of the reference signal and the more than one RRC message by using a same time unit or at least two continuous time units, wherein the at least two of the reference signal and the more than one RRC message have a same time offset or different time offsets and have a same transmission periodicity or transmission periodicities which are different multiples of a predetermined periodicity. Thus, the interference to other systems or nodes can be limited, and the number of LBTs required for these signal transmissions can be reduced if they are transmitted on unlicensed spectrum.
1. A method performed by a terminal device, comprising:
receiving from a network device, a discovery reference signal (DRS), a master information block (MIB), a paging message, and a system information block (SIB), wherein the SIB is with a common search space and the common search space is a space in which a physical downlink control channel (PDCCH) is located, wherein the DRS comprises a primary synchronization signal (PSS) and a secondary synchronization signal (SSS),
wherein occurrences of the DRS and the MIB occur with a first periodicity, occurrences of the SIB have a periodicity two times as long as the first periodicity, and occurrences of the paging message have a periodicity three times as long as the first periodicity,
wherein the MIB comprises a frequency resource information for the SIB and a time resource information for the SIB, the PDCCH being scrambled by a System Information-Radio Network Temporary Identifier (SI-RNTI), and wherein the DRS is received in a first time unit; and receiving the SIB in the first time unit based on the time resource information, and the frequency resource information.
2. The method of claim 1 , wherein the DRS and the MIB have a same offset.
3. The method of claim 1 , further comprising buffering the DRS before obtaining sufficient information to decode the DRS.
4. The method of claim 1 , wherein the SIB is received in a physical downlink shared channel (PDSCH).
5. The method of claim 1 , wherein the paging message is detected based on a first value in a cell identifier field not being a valid cell identifier, wherein the terminal device receives the first value in a current time instance and the terminal device receives a cell identifier of a second value in a previous nearest time instance, and the terminal device interprets the second value as a valid cell identifier, and the terminal device learns, from the first value, that the terminal device is being paged.
6. A terminal device, comprising:
a transceiver;
a processor;
wherein the transceiver is configured to receive, from a network device, a discovery reference signal (DRS), a master information block (MB), a paging message, and a a system information block (SIB), wherein the SIB is with a common search space and the common search space is a space in which a physical downlink control channel (PDCCH) is located, wherein the DRS comprises a primary synchronization signal (PSS) and a secondary synchronization signal (SSS),
wherein occurrences of the DRS and the MIB is occur with a first periodicity, occurrences of the SIB have a periodicity two times as long as the first periodicity, and occurrences of the paging message have a periodicity three times as long as the first periodicity,
wherein the MIB comprises a frequency resource information for the SIB and a time resource information for the SIB, the PDCCH being scrambled by a System Information-Radio Network Temporary Identifier (SI-RNTI); and
wherein the DRS is received in a first time unit,
wherein the SIB is received in the first time unit based on the time resource information, and the frequency resource information, and
wherein the processor is configured to:
decode the DRS, and
decode the SIB.
7. The terminal device of claim 6 , wherein the DRS and the MIB have a same offset.
8. The terminal device of claim 6 , wherein the processor is further configured to buffer the DRS before obtaining sufficient information to decode the DRS.