Method and system for notification of scrambling code identification signalling group

• US 9,350,507 B2
• Filed: 11/29/2011
• Issued: 05/24/2016
• Est. Priority Date: 01/19/2011
• Status: Active Grant

• Current Assignee: Eight Deer Ventures LLC (Markman Advisors)
• Original Assignee: ZTE Corporation
• Inventors: Guo, Senbao, Sun, Yunfeng, Zhang, Chenchen, Ren, Min, Gou, Wei
• Primary Examiner(s): Cai, Wayne
• Assistant Examiner(s): Elnoubi, Said
• Application Number:
  US13/980,704
• Publication Number:
  US 20140018086A1
• Time in Patent Office: 1,638 Days
• Field of Search: 455/442, 455/443, 455/444, 455/448, 455/515, 455/524, 455/525, 455/450, 455/509, 370/230, 370/335, 370/342
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0038 Blind format detection for detection of modulation format H04L27/0012
• CPC Class Codes: H04L 25/0224 using sounding signals
• CPC Class Codes: H04L 25/03866 using scrambling
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path

Abstract

Disclosed in the present disclosure is a method for notification of scrambling code identification signalling group, and the present disclosure comprises: a network side transmits a scrambling code identification signalling group to a receiver; the receiver generates a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group, generates a pilot symbol sequence according to the scrambling code sequence of the demodulation pilot, and performs channel estimation according to the pilot symbol sequence. The present disclosure also provides a system for implementing the notification of scrambling code identification signalling group. According to the technical solution in the disclosure, the receiver can obtain, according to the scrambling code identification signalling group transmitted from the network side, the scrambling code sequence of the demodulation reference signal and/or demodulation pilot which is the same as that of the network side, and thus interference can be avoided.

Claims

1. A method for notification of scrambling code identification signalling group, wherein the method comprises:

receiving, by a receiver, a scrambling code identification signalling group;

wherein the scrambling code identification signalling group comprises at least one of the following;

a virtual identification signalling, a virtual identification enabling signalling of one bit, and a virtual identification index signalling of one or more bits, where the virtual identification signalling includes one or more virtual cell identifications; and

the method further comprises;

receiving, by the receiver, the virtual identification signalling via a System Information Block (SIB) or a Radio Resource Control (RRC) signalling, and storing, by the receiver, the virtual identification signalling in the received SIB or RRC signalling;

performing blind detection for Downlink Control Information (DCI);

wherein the virtual identification index signalling is carried in DCI Format 2B or DCI Format 2C or a future format of the DCI;

obtaining the virtual identification index signalling according to the blind detection, and determining the virtual identification signalling according to the corresponding virtual identification index signalling;

generating, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the determined virtual identification signalling;

generating a pilot symbol sequence according to the scrambling code sequence of the demodulation pilot; and

performing channel estimation according to the pilot symbol sequence.

2. The method according to claim 1, wherein when the scrambling code identification signalling group comprises the virtual identification signalling, the virtual identification enabling signalling and the virtual identification index signalling, the step of receiving, by a receiver, a scrambling code identification signalling group and the step of generating, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprise:

receiving, by the receiver, the RRC signalling including the virtual identification enabling signalling to indicate whether the receiver is a potential virtual identification signalling user, performing blind detection for the DCI by 1 bit when the receiver is a potential virtual identification signalling user, and performing detection for the DCI by 0 bit when the receiver is not a potential virtual identification user;

obtaining, by the receiver, the virtual identification index signalling corresponding to the receiver according to the detection, and determining the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling;

or wherein when the scrambling code identification signalling group comprises the virtual identification signalling, the virtual identification enabling signalling and the virtual identification index signalling, the step of receiving, by a receiver, a scrambling code identification signalling group and the step of generating, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprise;

receiving, by the receiver, an RRC signalling including the virtual identification enabling signalling to indicate whether the receiver is a potential virtual identification signalling user, performing blind detection for received DCI by log₂ N bits when the receiver is a potential virtual identification user, and performing blind detection for the DCI by 0 bit when the receiver is not a potential virtual identification user;

obtaining, by the receiver, the virtual identification index signalling corresponding to the receiver according to the blind detection, and determining the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling, wherein N is the number of virtual cell identifications in the virtual identification signalling;

or wherein when the scrambling code identification signalling group comprises the virtual identification signalling and the virtual identification index signalling, the step of receiving, by a receiver, a scrambling code identification signalling group and the step of generating, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprise;

performing, by the receiver, blind detection for DCI by 1 bit or log₂ N bits, obtaining the virtual identification index signalling corresponding to the receiver according to the blind detection, and determining the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling.

3. The method according to claim 2, wherein the step of obtaining, by the receiver, the virtual identification signalling comprises:

calculating, by the receiver, the virtual identification signalling directly or indirectly through other obtained 1 bit parameters, the other obtained parameters include a n_SCID parameter in DCI Format 2B, a n_SCID parameter in DCI Format 2C or a n_SCID parameter in new DCI.

4. The method according to claim 1, wherein when the scrambling code identification signalling group comprises the virtual identification index signalling, the step of generating, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprises:

obtaining, by the receiver, the virtual identification signalling, performing blind detection for DCI by log₂ N bits or 1 bit, obtaining the virtual identification index signalling corresponding to the receiver according to the blind detection, and determining the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling;

or wherein when the scrambling code identification signalling group comprises the virtual identification enabling signalling and the virtual identification index signalling, the step of generating, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprises;

obtaining, by the receiver, the virtual identification signalling and receiving the obtained virtual identification signalling;

receiving, by the receiver, an RRC signalling including the virtual identification enabling signalling to indicate whether the receiver is a potential virtual identification signalling user, performing blind detection for DCI by 1 bit when the receiver is a potential virtual identification user, and performing blind detection for the DCI by 0 bit when the receiver is not a potential virtual identification user;

obtaining, by the receiver, the virtual identification index signalling corresponding to the receiver according to the blind detection, and determining the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling;

or wherein when the scrambling code identification signalling group comprises the virtual identification enabling signalling and the virtual identification index signalling, the step of generating, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprises;

obtaining, by the receiver, the virtual identification signalling and storing the obtained virtual identification signalling;

receiving, by the receiver, an RRC signalling including the virtual identification enabling signalling to indicate whether the receiver is a potential virtual identification signalling user, performing blind detection for DCI by log₂ N bits when the receiver is a potential virtual identification user, and performing blind detection for the DCI by 0 bit when the receiver is not a potential virtual identification user;

obtaining, by the receiver, the virtual identification index signalling corresponding to the receiver according to the blind detection, and determining the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling.

5. The method according to claim 4, wherein the step of obtaining, by the receiver, the virtual identification signalling comprises:

calculating, by the receiver, the virtual identification signalling directly or indirectly through other obtained parameters, the other obtained parameters include a n_SCID parameter in DCI Format 2B, a n_SCID parameter in DCI Format 2C or a n_SCID parameter in new DCI, wherein when calculating by using n_SCID, the value of N is 1.

6. A method for notification of scrambling code identification signalling group, wherein the method comprises:

transmitting, by a network side, a scrambling code identification signalling group to a receiver;

wherein the scrambling code identification signalling group comprises at least one of the following;

a virtual identification signalling, a virtual identification enabling signalling of one bit, and a virtual identification index signalling of one or more bits,

where the virtual identification signalling includes one or more virtual cell identifications; and

the method further comprises;

transmitting, by the network side, the virtual identification signalling to the receiver via a System Information Block (SIB) or a Radio Resource Control (RRC) signalling;

performing blind detection for Downlink Control Information (DCI);

wherein the virtual identification index signalling is carried in DCI Format 2B or DCI Format 2C or a future format of the DCI;

obtaining the virtual identification index signalling according to the blind detection, and determining the virtual identification signalling according to the corresponding virtual identification index signalling;

generating, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the determined virtual identification signalling;

generating a pilot symbol sequence according to the scrambling code sequence of the demodulation pilot; and

performing channel estimation according to the pilot symbol sequence.

7. The method according to claim 6, wherein when the scrambling code identification signalling group comprises the virtual identification signalling, the virtual identification enabling signalling and the virtual identification index signalling, the step of transmitting, by a network side, a scrambling code identification signalling group to a receiver for enabling the receiver to generate a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprise:

indicating, by the network side, whether the receiver is a potential virtual identification signalling user through the virtual identification enabling signalling included in the RRC signalling, wherein when the receiver is a potential virtual identification signalling user, a blind detection for Downlink Control Information (DCI) by 1 bit is performed, and when the receiver is not a potential virtual identification user, a blind detection for the DCI by 0 bit is performed;

wherein the blind detection is for enabling the receiver to obtain the virtual identification index signalling corresponding to the receiver and determine the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling;

or wherein when the scrambling code identification signalling group comprises the virtual identification signalling, the virtual identification enabling signalling and the virtual identification index signalling, the step of transmitting, by a network side, a scrambling code identification signalling group to a receiver for enabling the receiver to generate a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprise;

indicating, by the network side, whether the receiver is a potential virtual identification signalling user through the virtual identification enabling signalling included in an RRC signalling, wherein when the receiver is a potential virtual identification user, a blind detection for received DCI by log₂ N bits is performed, and when the receiver is not a potential virtual identification user, a blind detection for the DCI by 0 bit is performed;

wherein the blind detection is for enabling the receiver to obtain the virtual identification index signalling corresponding to the receiver and determine the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling, wherein N is the number of virtual cell identifications in the virtual identification signalling;

or wherein when the scrambling code identification signalling group comprises the virtual identification signalling and the virtual identification index signalling, the step of transmitting, by a network side, a scrambling code identification signalling group to a receiver for enabling the receiver to generate a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprise;

enabling the receiver to perform blind detection for DCI by 1 bit or log₂ N bits, wherein the blind detection is for enabling the receiver to obtain the virtual identification index signalling corresponding to the receiver, and determine the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling.

8. The method according to claim 7, wherein the step of transmitting, by the network side, the virtual identification signalling comprises:

transmitting other 1 bit parameters including a n_SCID parameter in DCI Format 2B, a n_SCID parameter in DCI Format 2C or a n_SCID parameter in new DCI to directly or indirectly indicate the virtual identification signalling to receiver.

9. The method according to claim 6, wherein when the scrambling code identification signalling group comprises the virtual identification index signalling, the step of enabling the receiver to generate a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprises:

transmitting, by the network side, the virtual identification signalling, enabling the receiver to perform blind detection for DCI by log₂ N bits or 1 bit, wherein the blind detection is for enabling the receiver to obtain the virtual identification index signalling corresponding to the receiver, and determine the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling

or wherein when the scrambling code identification signalling group comprises the virtual identification enabling signalling and the virtual identification index signalling, the step of enabling the receiver to generate a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprises;

transmitting, by the network side, the virtual identification signalling for storing in the receiver;

indicating, by the network side, whether the receiver is a potential virtual identification signalling user through the virtual identification enabling signalling included in an RRC signalling, wherein when the receiver is a potential virtual identification user, a blind detection for DCI by 1 bit is performed, and when the receiver is not a potential virtual identification user, a blind detection for the DCI by 0 bit is performed;

wherein the blind detection is for enabling the receiver to obtain the virtual identification index signalling corresponding to the receiver and determine the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling;

or wherein when the scrambling code identification signalling group comprises the virtual identification enabling signalling and the virtual identification index signalling, the step of generating, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the scrambling code identification signalling group comprises;

obtaining, by the receiver, the virtual identification signalling and storing the obtained virtual identification signalling;

indicating, by the network side, whether the receiver is a potential virtual identification signalling user through the virtual identification enabling signalling included in an RRC signalling, wherein when the receiver is a potential virtual identification user, a blind detection for DCI by log₂ N bits is performed, and when the receiver is not a potential virtual identification user, a blind detection for the DCI by 0 bit is performed;

wherein the blind detection is for enabling the receiver to obtain the virtual identification index signalling corresponding to the receiver, and determine the virtual identification signalling for generating the scrambling code sequence of the demodulation pilot according to the corresponding virtual identification index signalling.

10. The method according to claim 9, wherein the step of enabling the receiver to obtain the virtual identification signalling comprises:

enabling the receiver to calculate the virtual identification signalling directly or indirectly through other obtained parameters, the other obtained parameters include a n_SCID parameter in DCI Format 2B, a n_SCID parameter in DCI Format 2C or a n_SCID parameter in new DCI, wherein when calculating by using n_SCID, the value of N is 1.

11. A receiver for notification of scrambling code identification

signaling group, configured to:

receive a scrambling code identification signaling group;

wherein the scrambling code identification signaling group comprises at least one of the following;

a virtual identification signaling, a virtual identification enabling signaling of one bit, and a virtual identification index signaling of one or more bits, where the virtual identification signaling includes one or more virtual cell identifications; and

the receiver is configured to receive the virtual identification signaling via a System Information Block (SIB) or a Radio Resource Control (RRC) signaling, store the virtual identification signaling in the received SIB or RRC signaling;

to perform blind detection for Downlink Control Information (DCI);

wherein the virtual identification index signaling is carried in DCI Format 2B or DCI Format 2C or a future format of the DCI;

to obtain the virtual identification index signaling according to the blind detection, and determine the virtual identification signaling according to the corresponding virtual identification index signaling;

generate, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the determined virtual identification signaling;

generate a pilot symbol sequence according to the scrambling code sequence of the demodulation pilot; and

perform channel estimation according to the pilot symbol sequence.

12. The receiver according to claim 11, wherein the receiver comprises a mobile terminal, a handset, a relay station or a HeNodeB.

13. A base station for notification of scrambling code identification signaling group, configured to:

transmit a scrambling code identification signaling group to a receiver;

wherein the scrambling code identification signaling group comprises at least one of the following;

a virtual identification signaling, a virtual identification enabling signaling of one bit, and a virtual identification index signaling of one or more bits, where the virtual identification signaling includes one or more virtual cell identifications; and

the base station is configured to transmit the virtual identification signaling to the receiver via a System Information Block (SIB) or a Radio Resource Control (RRC) signaling;

to perform blind detection for Downlink Control Information (DCI);

wherein the virtual identification index signaling is carried in Downlink Control Information (DCI) Format 2B or DCI Format 2C or a future format of the DCI;

to obtain the virtual identification index signaling according to the blind detection, and determining the virtual identification signaling according to the corresponding virtual identification index signaling;

generate, by the receiver, a corresponding scrambling code sequence of a demodulation pilot according to the determined virtual identification signaling;

generate a pilot symbol sequence according to the scrambling code sequence of the demodulation pilot; and

perform channel estimation according to the pilot symbol sequence.