Method and apparatus for improving low-cost MTC (machine-type communication) devices in a wireless communication system
View Patent ↗A method and apparatus are disclosed for improving low-cost MTC (Machine-Type Communication) devices in a wireless communication system. The method includes broadcasting, in a system information, a first information used for cell re-selection. The method further includes providing a second information, for a neighboring cell or a frequency, that is used for cell re-selection.
1. A method for improving cell re-selection in a wireless communication system, comprising:
broadcasting, by an Evolved Universal Terrestrial Radio Access Network (E-UTRAN), a first information and a second information in a system information, wherein the first information is used for cell re-selection performed by a first User Equipment (UE) supporting 20 MHz bandwidth, the second information is used for cell re-selection performed by a second UE supporting a largest bandwidth less than 20 MHz, and the second information includes a list of neighboring cells supporting a second UE.
2. The method of claim 1 , wherein the second information includes a list of frequencies that have a cell supporting the second UE.
3. The method of claim 1 , wherein the first information and the second information are in different system information block types of the system information.
4. The method of claim 1 , wherein the neighboring cells are intra-frequency neighboring cells.
5. The method of claim 1 , wherein the neighboring cells are inter-frequency neighboring cells.
6. The method of claim 1 , wherein the cell re-selection is performed when the first UE or the second UE is in idle mode.
7. The method of claim 1 , wherein cell re-selection evaluation is not based on Master Information Block (MIB) of the neighboring cell.
8. The method of claim 1 , wherein cell re-selection evaluation is not performed by the second UE for a cell not supporting the second UE.
9. The method of claim 1 , wherein cell re-selection evaluation is performed by the second UE for a cell supporting the second UE.
10. The method of claim 1 , wherein the first information includes a list of neighboring cells supporting the first UE.
11. The method of claim 1 , wherein the first information includes a list of frequencies that have a cell supporting the first UE.
12. A communication device for improving cell re-selection in a wireless communication system, the communication device comprising:
a control circuit;
a processor installed in the control circuit;
a memory installed in the control circuit and operatively coupled to the processor;
wherein the processor is configured to execute a program code stored in memory to improve the MTC device by:
broadcasting a first information and a second information in a system information, wherein the first information is used for cell re-selection performed by a first User Equipment (UE) supporting 20 MHz bandwidth, the second information is used for cell re-selection performed by a second UE supporting a largest bandwidth less than 20 MHz, and the second information includes a list of neighboring cells supporting the second UE.
13. The communication device of claim 12 , wherein the second information includes a list of frequencies that have a cell supporting the second UE.
14. The communication device of claim 12 , wherein the first information and the second information are in different system information block types of the system information.
15. The communication device of claim 12 , wherein the neighboring cells are intra-frequency neighboring cells.
16. The communication device of claim 12 , wherein the neighboring cells are inter-frequency neighboring cells.
17. The communication device of claim 12 , wherein the cell re-selection is performed when the first UE or the second UE is in idle mode.
18. The communication device of claim 12 , wherein cell re-selection evaluation is not based on Master Information Block (MIB) of the neighboring cell.
19. The communication device of claim 12 , wherein cell re-selection evaluation is not performed by the second UE for a cell not supporting the second UE.
20. The communication device of claim 12 , wherein cell re-selection evaluation is performed by the second UE for a cell supporting the second UE.
21. The communication device of claim 12 , wherein the first information includes a list of neighboring cells supporting the first UE.
22. The communication device of claim 12 , wherein the first information includes a list of frequencies that have a cell supporting the first UE.