METHOD FOR INFORMATION TRANSMISSION, BASE STATION AND USER EQUIPMENT

• US 20150009883A1
• Filed: 09/02/2014
• Published: 01/08/2015
• Est. Priority Date: 03/02/2012
• Status: Active Grant

• Current Assignee: Honor Device Company Limited
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: WAN, Lei, BAI, Wei
• Granted Patent: US 10,064,169 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04W 16/08 Load shedding arrangements
• CPC Class Codes: H04W 16/26 Cell enhancers or enhancement, e.g. for tunnels, building shadow
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

The present invention provides a method for information transmission, a base station and a user equipment. The method for information transmission includes: performing a coverage enhancement processing on control information and data information (101); transmitting the control information and the data information, which the coverage enhancement processing is performed on, to a user equipment (102); and transmitting coverage enhancement indication information to the user equipment, where the coverage enhancement indication information is used for indicating the user equipment to acquire the control information and the data information which the coverage enhancement processing is performed on (103). The technical solutions of the present invention are capable of improving the downlink coverage range.

Claims

1. A method for information transmission, comprising:

performing a coverage enhancement processing on control information and data information;

transmitting the control information and the data information on which the coverage enhancement processing was performed to a user equipment; and

transmitting coverage enhancement indication information to the user equipment, wherein the coverage enhancement indication information is used for indicating to the user equipment to acquire the control information and the data information on which the coverage enhancement processing was performed.

2. The method for information transmission according to claim 1, wherein the performing the coverage enhancement processing comprises one or more of:

extending one or more of a time domain resource and a frequency domain resource occupied by the control information and the data information; and

enhancing a transmit power of a physical resource element (RE) that transmits the control information and the data information.

3. The method for information transmission according to claim 2, wherein:

the data information comprises physical downlink shared channel (PDSCH) data, and

the control information comprises;

physical broadcast channel (PBCH) data and physical downlink control channel (PDCCH) data, or

physical broadcast channel (PBCH) data, physical downlink control channel (PDCCH) data and pilot signal data.

4. The method for information transmission according to claim 3, wherein, when the control information is the PBCH data and the PDCCH data, the extending one or more of the time domain resource and the frequency domain resource occupied by the PBCH data and the PDCCH data comprises:

extending the PBCH data at a position outside first four orthogonal frequency division multiplexed (OFDM) symbols of a first slot of a 0th subframe in a radio frame, and/or a position outside 6 physical resource blocks (PRB) in the middle of the first slot of the 0th subframe in the radio frame; and

extending the PDCCH data at a position outside 8 consecutive control channel elements (CCE) of a subframe.

5. The method for information transmission according to claim 1, wherein the transmitting the coverage enhancement indication information to the user equipment comprises:

transmitting the coverage enhancement indication information to the user equipment through broadcasting;

transmitting the coverage enhancement indication information to the user equipment through a radio resource control (RRC) protocol signaling;

or

transmitting the coverage enhancement indication information to the user equipment through a combination of an RRC signaling and PDDCH data.

6. The method for information transmission according to claim 5, wherein

the coverage enhancement indication information comprises indication information which indicates that the base station has been in a state of coverage enhancement;

or

the coverage enhancement indication information comprises location information which indicates an extended time domain resource and/or frequency domain resource occupied by the control information and the data information, and when a discrete Fourier transformation spread orthogonal frequency division multiplexed (DFT-S-OFDM) modulation is performed on the PDSCH data, the coverage enhancement indication information further comprises a modulation mode and a ratio between length of the data before the DFT-S-OFDM modulation and length of the data after the DFT-S-OFDM modulation;

or

the coverage enhancement indication information comprises location information of a physical resource element (RE), of which the transmit power is enhanced, of the control information and the data information.

7. A method for information transmission, comprising:

receiving, by a user equipment, coverage enhancement indication information transmitted by a base station, wherein the coverage enhancement indication information is used for indicating to the user equipment to acquire control information and data information after a coverage enhancement processing is performed on the control information and the data information; and

acquiring, by the user equipment, the control information and the data information on which the coverage enhancement processing was performed according to the coverage enhancement indication information.

8. The method for information transmission according to claim 7, wherein the coverage enhancement indication information comprises indication information which indicates that the base station has been in a state of coverage enhancement, and the acquiring, by the user equipment, the control information and the data information according to the coverage enhancement indication information, comprises:

acquiring pre-stored location information of an extended time domain resource and/or an extended frequency resource occupied by the control information and the data information, and when a discrete Fourier transformation spread orthogonal frequency division multiplexed (DFT-S-OFDM) modulation is performed on PDSCH data of the data information, also acquiring a modulation mode and a ratio between length of the data before the DFT-S-OFDM modulation and length of the data after the DFT-S-OFDM modulation; and

acquiring the control information and the data information from the time domain resource and the frequency resource according to the location information of the extended time domain resource and/or the extended frequency resource occupied by the control information and the data information, or, acquiring the control information and the data information from the time domain resource and the frequency resource according to the location information of the extended time domain resource and/or the extended frequency resource occupied by the control information and the data information, and the ratio between the length of the data before the DFT-S-OFDM modulation and the length of the data after the DFT-S-OFDM modulation.

17. The method for information transmission according to claim 7, wherein the coverage enhancement indication information comprises indication information which indicates that the base station has been in a state of coverage enhancement, and the acquiring, by the user equipment, the control information and the data information according to the coverage enhancement indication information, comprises:

acquiring pre-stored location information of a physical resource element (RE) which transmits the control information and the data information at enhanced transmit power; and

acquiring the control information and the data information from the time domain resource and the frequency resource according to the location information of the RE which transmits the control information and the data information at the enhanced transmit power.

9. A base station, comprising:

a processing module, configured to perform a coverage enhancement processing on control information and data information;

a transmitting module, configured to transmit the control information and the data information on which the coverage enhancement processing was performed to a user equipment, and transmit coverage enhancement indication information to the user equipment, wherein the coverage enhancement indication information is used for indicating to the user equipment to acquire the control information and the data information on which the coverage enhancement processing was performed.

10. The base station according to claim 9, wherein the processing module comprises one or more of:

an extending unit, configured to extend one or more of a time domain resource and a frequency domain resource occupied by the control information and the data information; and

a power enhancing unit, configured to enhance a transmit power of a physical resource element (RE) which transmits the control information and the data information.

11. The base station according to claim 10, wherein:

the data information comprises physical downlink shared channel (PDSCH) data, and

the control information comprises;

physical broadcast channel (PBCH) data and physical downlink control channel (PDCCH) data, or

physical broadcast channel (PBCH) data, physical downlink control channel (PDCCH) data and pilot signal data.

12. The base station according to claim 11, wherein, the extending unit is configured to:

when the control information is the PBCH data and the PDCCH data, extend the PBCH data at a position outside first four orthogonal frequency division multiplexed (OFDM) symbols of a first slot of a 0th subframe in a radio frame, and/or a position outside 6 physical resource blocks (PRB) in the middle of the first slot of the 0th subframe in the radio frame; and

extend the PDCCH data at a position outside 8 consecutive control channel elements (CCE) of a subframe.

13. The base station according to claim 11, wherein

the coverage enhancement indication information comprises indication information which indicates that the base station has been in a state of coverage enhancement;

or

the coverage enhancement indication information comprises location information which indicates an extended time domain resource and/or frequency domain resource occupied by the control information and the data information, and when a discrete Fourier transformation spread orthogonal frequency division multiplexed (DFT-S-OFDM) modulation is performed on the PDSCH data, the coverage enhancement indication information further comprises a modulation mode and a ratio between length of the data before the DFT-S-OFDM modulation and length of the data after the DFT-S-OFDM modulation;

or

the coverage enhancement indication information comprises location information of a physical resource element (RE), of which the transmit power is enhanced, of the control information and the data information.

14. A user equipment, comprising:

a receiving module, configured to receive coverage enhancement indication information transmitted by a base station, wherein the coverage enhancement indication information is used for indicating to the user equipment to acquire control information and data information after a coverage enhancement processing is performed on the control information and the data information; and

an acquiring module, configured to acquire the control information and the data information on which the coverage enhancement processing was performed according to the coverage enhancement indication information.

15. The user equipment according to claim 14, wherein the acquiring module comprises:

a first acquiring unit, configured to;

when the receiving module receives coverage enhancement indication information comprises indication information which indicates that the base station has been in a state of coverage enhancement, acquire pre-stored location information of an extended time domain resource and/or an extended frequency resource occupied by the control information and the data information, and when a discrete Fourier transformation spread orthogonal frequency division multiplexed (DFT-S-OFDM) modulation is performed on PDSCH data of the data information, also acquire a modulation mode and a ratio between length of the data before the DFT-S-OFDM modulation and length of the data after the DFT-S-OFDM modulation; and

a second acquiring unit, configured to acquire the control information and the data information from the time domain resource and the frequency resource according to the location information of the extended time domain resource and/or the extended frequency resource occupied by the control information and the data information, or, acquire the control information and the data information from the time domain resource and the frequency resource according to the location information of the extended time domain resource and/or the extended frequency resource occupied by the control information and the data information, and the ratio between the length of the data before the DFT-S-OFDM modulation and the length of the data after the DFT-S-OFDM modulation.

16. The user equipment according to claim 14, wherein the acquiring module comprises:

a first acquiring unit, configured to acquire pre-stored location information of a physical resource element (RE) which transmits the control information and the data information at enhanced transmit power; and

a second acquiring unit, configured to acquire the control information and the data information from the time domain resource and the frequency resource according to the location information of the RE which transmits the control information and the data information at the enhanced transmit power.