Methods and apparatuses for scheduling for coexistence between NB-IoT and E-MTC
A communication device identifies a subset of physical resource blocks, PRBs, within a Long Term Evolution, LTE, system bandwidth that are eligible for use as narrowband internet of things, NB-IoT, PRBs, wherein the eligibility of PRBs for use as NB-IoT PRBs is determined in relation to at least one machine-type-communication, MTC, narrowband within the LTE system bandwidth, and transmits or receives information via at least one of the eligible PRBs that has been allocated as a NB-IoT PRB, or via the at least one MTC narrowband.
1. A method comprising:
identifying a subset of physical resource blocks, PRBs, within a Long Term Evolution, LTE, system bandwidth that are eligible for use as narrowband internet of things, NB-IoT, PRBs, wherein the eligibility of PRBs for use as NB-IoT PRBs is determined in relation to at least one machine-type-communication, MTC, narrowband within the LTE system bandwidth; and
transmitting or receiving information via at least one of the eligible PRBs that has been allocated as a NB-IoT PRB, or via the at least one MTC narrowband,
wherein identifying the eligible PRBs comprises predefining or configuring at least one 6-PRB MTC narrowband as invalid for transmission of an MTC System Information Block 1, SIB1bis, and identifying at least one PRB within the predefined or configured narrowband as eligible for use as a NB-IoT PRB.
2. The method of claim 1 , wherein the at least one MTC narrowband comprises an MTC narrowband to be used for transmission of System Information Block 1, SIB1bis.
3. The method of claim 1 , wherein the at least one MTC narrowband comprises an MTC narrowband to be used for transmission of paging-related information.
4. The method of claim 1 , wherein identifying the eligible PRBs comprises identifying the eligible PRBs as eligible for use as secondary NB-IoT PRBs, and wherein the at least one of the eligible PRBs is allocated as at least one secondary NB-IoT PRB.
5. The method of claim 1 , wherein the subset includes only one or more PRBs defined at the outermost edges of the LTE system bandwidth.
6. The method of claim 1 , wherein identifying the eligible PRBs comprises identifying the eligible PRBs based on at least one of:
whether the LTE system bandwidth includes an odd or even number of PRBS; and
a size of the LTE system bandwidth.
7. The method of claim 1 , further comprising transmitting or receiving configuration signaling indicating whether PRBs identifiable according to a predefined rule are reserved for use as NB-IoT PRBs.
8. The method of claim 7 , wherein the configuration signaling comprises particular combinations of values for a set of bits that also indicates scheduling information for a System Information Block 1, SIB1bis.
9. The method of claim 1 , further comprising transmitting or receiving configuration signaling indicating which PRBs within the LTE system bandwidth are reserved for use as NB-IoT PRBs.
10. The method of claim 1 , further comprising transmitting or receiving MTC information via the at least one MTC narrowband, by performing puncturing or rate matching to avoid transmission or reception of the MTC information via the at least one of the eligible PRBs allocated as a NB-IoT PRB.
11. The method of claim 1 , further comprising transmitting or receiving system information or paging-related information via the at least one MTC narrowband according to a frequency hopping pattern which is modified to exclude the at least one of the eligible PRBs allocated as a NB-IoT PRB.
12. The method of claim 1 , further comprising determining, based on a cell identity of a cell in which MTC information is to be transmitted, one or more MTC narrowbands via which to transmit the MTC information, and transmitting or receiving the MTC information via the one or more MTC narrowbands, except for the subset of PRBs identified as eligible for use as NB-IoT PRBs.
13. The method of claim 10 , wherein the MTC information comprises system information or paging-related information for an MTC system.
14. The method of claim 1 , wherein the subset of PRBs within the LTE system bandwidth that are eligible for use as NB-IoT PRBs are PRBs that are reserved for use as NB-IoT PRBs.
15. The method of claim 1 , further comprising allocating the at least one of the eligible PRBs as NB-IoT PRBs.
16. An apparatus, comprising:
at least one processor configured to:
identify a subset of physical resource blocks, PRBs, within a Long Term Evolution, LTE, system bandwidth that are eligible for use as narrowband internet of things, NB-IoT, PRBs, wherein the eligibility of PRBs for use as NB-IoT PRBs is determined in relation to at least one machine-type-communication, MTC, narrowband within the LTE system bandwidth; and
at least one transmitter or receiver configured to transmit or receive information via at least one of the eligible PRBs that has been allocated as a NB-IoT PRB, or via the at least one MTC narrowband,
wherein identifying the eligible PRBs comprises predefining or configuring at least one 6-PRB MTC narrowband as invalid for transmission of an MTC System Information Block 1, SIB1bis, and identifying at least one PRB within the predefined or configured narrowband as eligible for use as a NB-IoT PRB.
17. The apparatus of claim 16 , wherein the at least one MTC narrowband comprises an MTC narrowband to be used for transmission of System Information Block 1, SIB1bis.
18. The apparatus of claim 16 , wherein the at least one MTC narrowband comprises an MTC narrowband to be used for transmission of paging-related information.
19. The apparatus of claim 16 , wherein identifying the eligible PRBs comprises identifying the eligible PRBs as eligible for use as secondary NB-IoT PRBs, and wherein the at least one of the eligible PRBs is allocated as at least one secondary NB-IoT PRB.
20. The apparatus of claim 16 , wherein the subset includes only one or more PRBs defined at the outermost edges of the LTE system bandwidth.
21. The apparatus of claim 16 , wherein identifying the eligible PRBs comprises identifying the eligible PRBs based on at least one of:
whether the LTE system bandwidth includes an odd or even number of PRBS; and
a size of the LTE system bandwidth.
22. The apparatus of claim 16 , wherein the subset of PRBs within the LTE system bandwidth that are eligible for use as NB-IoT PRBs are PRBs that are reserved for use as NB-IoT PRBs.
23. A non-transitory computer-readable medium, having stored thereon a computer program which, when executed by at least one processor of a radio access node, causes the radio access node to:
identify a subset of physical resource blocks, PRBs, within a Long Term Evolution, LTE, system bandwidth that are eligible for use as narrowband internet of things, NB-IoT, PRBs, wherein the eligibility of PRBs for use as NB-IoT PRBs is determined in relation to at least one machine-type-communication, MTC, narrowband within the LTE system bandwidth; and
transmit or receive information via the at least one of the eligible PRBs that has been allocated as a NB-IoT PRB, or via the at least one MTC narrowband,
wherein identifying the eligible PRBs comprises predefining or configuring at least one 6-PRB MTC narrowband as invalid for transmission of an MTC System Information Block 1, SIB1bis, and identifying at least one PRB within the predefined or configured narrowband as eligible for use as a NB-IoT PRB.