IP Library › Granted Patent US 11,523,429

Granted Patent B2

US 11,523,429 · App. 15/863,911 · Granted Dec 6, 2022

Method and apparatus for managing grant-free data transmission in radio communication network

Inventors: Nithin Srinivasan (Chennai, IN); Dhivagar Baskaran (Chennai, IN); Chandrasekaran Mohandoss (Chennai, IN); Sunil Kaimalettu (Chennai, IN); Jeniston Deviraj Klutto Milleth (Chennai, IN); Bhaskar Ramamurthi (Chennai, IN)

Assignees: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY CEWIT; INDIAN INSTITUTE OF TECHNOLOGY MADRAS

H04W74/04 H04L1/18 H04L1/1812 H04W4/20 H04W40/12 H04W72/042 H04W72/1289 H04W74/0841 H04W76/27 H04W72/0453 H04W74/006 H04W76/30

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Quick Facts

Patent No.: US 11,523,429
App. No.: 15/863,911
Granted: Dec 6, 2022
Kind: B2

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Abstract

Embodiments herein provide a method and system for managing Grant-free data transmission in a radio communication network. The proposed method includes composing, by a Base Station (BS), a Select Signal (SS) for a transceiver device, where the SS is configured to control a grant-free data transmission from the transceiver device. Further, the proposed method includes transmitting, by the BS, the SS to the transceiver device. Further, the proposed method includes receiving, by a transceiver device, the SS from the BS. Further, the proposed method includes decoding, by the transceiver device, the SS and furthermore, the proposed method includes controlling, by the transceiver device, a data transmission by one of activating the grant-free data transmission from the transceiver device in response to successful decoding of the SS, and deactivating the grant-free data transmission from the transceiver device in response to unsuccessful decoding of the SS.

Claims (104)

1. A method for managing a grant-free data transmission in a radio communication network, the method comprising:

composing, by a base station, at least one Select Signal (SS) for at least one transceiver device from a plurality of transceiver devices in the radio communication network, wherein the at least one SS is configured to control the grant-free data transmission from the at least one transceiver device, wherein the at least one SS comprises one of: at least one bit of information indicating an activation of the grant-free data transmission at the at least one transceiver device, and a plurality of bits of information indicating transmission parameters, wherein at least one bit from the plurality of bits indicates an activation of the grant-free data transmission at the at least one transceiver device;

transmitting, by the base station, the at least one SS comprising one of the at least one bit of information and the plurality of bits of information of the at least one SS to the at least one transceiver, wherein one of the at least one bit of information and the plurality of bits of information of the at least one SS is transmitted as at least one of a Radio Resource Control (RRC) signalling and a Layer 1 (L1) signalling;

receiving, by the at least one transceiver device, the at least one SS from the base station using at least one of the RRC signalling and the L1 signalling,

decoding, by the at least one transceiver device, the at least one SS;

activating, by the at least one transceiver device, the grant-free data transmission based on the at least one bit of the at least one SS indicating the activation of the grant-free data transmission at the at least one transceiver device, wherein the at least one transceiver device remains active until the deactivation of the grant-free transmission is indicated in the same SS;

performing, by the at least one transceiver device, the grant-free data transmission;

composing, by the base station, the at least one SS for the at least one transceiver device, wherein the at least one SS comprises one of: at least one bit of information indicating a deactivation of the grant-free data transmission at the at least one transceiver device, and a plurality of bits of information indicating transmission parameters, wherein at least one bit from the plurality of bits indicates a deactivation of the grant-free data transmission at the at least one transceiver device;

transmitting, by the base station, the at least one SS comprising to the at least one transceiver device, wherein the at least one SS is transmitted as at least one of a RRC signalling and a L1 signalling;

receiving, by the at least one transceiver device, the at least one SS from the base station using at least one of the RRC signalling and the L1 signalling,

decoding, by the transceiver device, the at least one SS; and

deactivating, by the at least one transceiver device, the grant-free data transmission based on the at least one bit of the at least one SS indicating the deactivation of the grant-free data transmission at the at least one transceiver device, wherein the at least one transceiver device remains deactive until the activation of the grant-free transmission is indicated in the same SS.

2. The method of claim 1 , wherein the grant-free data transmission from the at least one transceiver device comprises at least one of a fresh data transmission, a data retransmission and a Channel Quality Indicator (CQI) reporting.

3. The method of claim 1 , wherein the transmission parameters for at least one of a fresh data transmission and a data retransmission comprises at least one of:

at least one bit from the plurality of bits transmitted as at least one of the L1 signalling and the RRC signalling indicating one of an activation of the grant-free data transmission at the at least one transceiver device and a deactivation of the grant-free data transmission at the at least one transceiver device, and

at least one bit from the plurality of bits transmitted as at least one of the L1 signalling and the RRC signalling indicating at least one of a Modulation and Coding Scheme (MCS), a Resource Position (RP), a scheduling pattern, an orthogonal sequence, a resource allocation, a multiple access signature, a waveform configuration, a transmit power allocation, a number of retransmissions and retransmissions to defer.

4. The method of claim 1 , wherein transmission parameters for a CQI reporting comprises at least one of:

at least one bit from the plurality of bits indicating one of an activation of the grant-free data transmission at the at least one transceiver device and a deactivation of the grant-free data transmission at the at least one transceiver device for the grant-free data transmission which is transmitted as at least one of the L1 signalling and the RRC signalling, and

at least one bit from the plurality of bits comprises at least one of a transmit power information, a reference signal information, a sub-band information, a CQI type, and a measurement configuration which is transmitted as at least one of the L1 signalling and the RRC signalling.

5. The method of claim 1 , wherein the transmission parameters are dynamically one of configured and reconfigured based on at least one of the L1 signalling and the RRC signalling.

6. The method of claim 1 , wherein the transmission parameters are dynamically determined based on a type of the grant-free data transmission intended by the at least one transceiver device, and wherein the type of the grant-free data transmission is at least one of a fresh data transmission, a data retransmission and a CQI reporting.

7. The method of claim 1 , wherein composing by the base station the at least one SS for the at least one transceiver device comprises:

receiving a preamble sequence from the at least one transceiver device; and

composing the at least one SS for a fresh data transmission at the at least one transceiver device without grant based on the preamble sequence.

8. The method of claim 1 , wherein the at least one SS is transmitted by performing one of a SS key encryption and a cyclic redundancy check (CRC) sequence scrambling by using one of a transceiver identifier and a transceiver group identifier.

9. The method of claim 1 , wherein composing by the base station the at least one SS for the at least one transceiver device comprises:

receiving at least one fresh data transmission from the at least one transceiver device; and

composing the at least one SS for the data retransmission without grant from the at least one transceiver device based on the at least one fresh data transmission.

10. The method of claim 1 , wherein the grant-free data transmission is performed at the at least one transceiver device based on the transmission parameter from the at least one SS.

11. The method of claim 1 , wherein the at least one SS is decoded by the at least one transceiver device intended to perform the grant-free data transmission at a pre-determined time interval.

12. The method of claim 1 , wherein decoding at least one SS comprises performing one of a SS key decryption and a cyclic redundancy check (CRC) sequence descrambling using on one of a transceiver identifier of the transceiver device and a group identifier for the at least one transceiver device.

13. The method of claim 1 , wherein the at least one bit indicating the activation in the at least one SS signal and the at least one bit indicating deactivation in the at least one SS signal is one of same and different.

14. A system base station for managing a grant-free data transmission in a radio communication network, comprising:

at least one transceiver device;

a base station comprising:

a memory;

a processor; and

a Select Signal (SS) composer, operably coupled to the processor and the memory, configured to:

compose at least one Select Signal (SS) for the at least one transceiver device from a plurality of transceiver devices in the radio communication network, wherein the at least one SS is configured to control the grant-free data transmission from the at least one transceiver device, wherein the at least one SS comprises one of: at least one bit of information indicating an activation of the grant-free data transmission at the at least one transceiver device for the grant-free data transmission, and a plurality of bits of information indicating transmission parameters, wherein at least one bit from the plurality of bits indicates an activation of the grant-free data transmission at the at least one transceiver device;

transmit, the at least one SS comprising one of the at least one bit of information and the plurality of bits of information of the at least one SS to the at least one transceiver device, wherein one of the at least one bit of information and the plurality of bits of information of the at least one SS is transmitted as at least one of a Radio Resource Control (RRC) signalling and a Layer 1 (L1) signalling;

wherein the at least one transceiver device:

receives the at least one SS from the base station using at least one of the RRC signalling and the L1 signalling,

decodes the at least one SS;

activates the at least one transceiver device based on the at least one bit of the at least one SS indicating the activation of the grant-free data transmission at the at least one transceiver device, wherein the at least one transceiver device remains active until deactivation of the grant-free transmission is indicated in the same SS; and

performs the grant-free data transmission;

wherein said SS composer of said base station:

composes the at least one SS for the at least one transceiver device, wherein the at least one SS comprises one of: at least one bit of information indicating a deactivation of the grant-free data transmission at the at least one transceiver device, and a plurality of bits of information indicating transmission parameters, wherein at least one bit from the plurality of bits indicates a deactivation of the grant-free data transmission at the at least one transceiver device; and

transmits the at least one SS comprising to the at least one transceiver device, wherein the at least one SS is transmitted as at least one of a RRC signalling and a L1 signalling; and

wherein the at least one transceiver device:

receives the at least one SS from the base station using at least one of the RRC signalling and the L1 signalling,

decodes the at least one SS; and

deactivate the at least one transceiver device based on the at least one bit of the at least one SS indicating the deactivation of the grant-free data transmission at the at least one transceiver device, wherein the at least one transceiver device remains deactive until the activation of the grant-free transmission is indicated in the same SS.

15. The system of claim 14 , wherein the grant-free data transmission from the at least one transceiver device comprises at least one of a fresh data transmission, a data retransmission and a Channel Quality Indicator (CQI) reporting.

16. The system of claim 14 , wherein the transmission parameters for at least one of a fresh data transmission and a data retransmission comprises at least one of:

17. The system of claim 14 , wherein the transmission parameters for a CQI reporting comprises at least one of:

at least one bit from the plurality of bits indicating one of an activation of the grant-free data transmission at the at least one transceiver device and a deactivation of the grant-free data transmission at the at least one transceiver device which is transmitted as at least one of the L1 signalling and the RRC signalling, and

18. The system of claim 14 , wherein the transmission parameters are dynamically one of configured and reconfigured based on at least one of the L1 signalling and the RRC signalling.

19. The system of claim 14 , wherein the transmission parameters are dynamically determined based on a type of the grant-free data transmission intended by the at least one transceiver device, and wherein the type of the grant-free data transmission is at least one of a fresh data transmission, a data retransmission and a CQI reporting.

20. The system of claim 14 , wherein composing by the base station the at least one SS for the at least one transceiver device comprises:

receiving a preamble sequence from the at least one transceiver device; and

composing the at least one SS for a fresh data transmission at the at least one transceiver device without grant based on the preamble sequence.

21. The system of claim 14 , wherein the at least one SS is transmitted by performing one of a SS key encryption and a cyclic redundancy check (CRC) sequence scrambling by using one of a transceiver identifier and a transceiver group identifier.

22. The system of claim 14 , wherein composing by the base station the at least one SS for the at least one transceiver device comprises:

receiving at least one fresh data transmission from the at least one transceiver device, and

composing the at least one SS for the data retransmission without grant from the at least one transceiver device based on the at least one fresh transmission.

23. The system of claim 14 , wherein the grant-free data transmission is performed at the at least one transceiver device based on the transmission parameter from the at least one SS.

24. The system of claim 14 , wherein the at least one SS is decoded by the at least one transceiver device intended to perform the grant-free data transmission at a pre-determined time interval.

25. The system of claim 14 , wherein decoding at least one SS comprises performing one of a SS key decryption and a cyclic redundancy check (CRC) sequence descrambling using on one of a transceiver identifier of the transceiver device and a group identifier for the at least one transceiver device.

26. The system of claim 14 , wherein the at least one bit indicating the activation in the at least one SS signal and the at least one bit indicating deactivation in the at least one SS signal is one of same and different.

27. A method for managing a grant-free data transmission in a radio communication network, the method comprising:

composing, by a base station, at least one SS for at least one transceiver device of a plurality of transceiver devices, wherein the at least one SS comprises one of: at least one bit of information indicating a deactivation of the grant-free data transmission at the at least one transceiver device, and a plurality of bits of information indicating transmission parameters, wherein at least one bit from the plurality of bits indicates a deactivation of the grant-free data transmission at the at least one transceiver device;

receiving, by the at least one transceiver device, the at least one SS from the base station using at least one of the RRC signalling and the L1 signalling,

decoding, by the transceiver device, the at least one SS;

composing, by the base station, the at least one SS for at least one transceiver device, wherein the at least one SS is configured to control the grant-free data transmission from the at least one transceiver device, wherein the at least one SS comprises one of: at least one bit of information indicating an activation of the grant-free data transmission at the at least one transceiver device, and a plurality of bits of information indicating transmission parameters, wherein at least one bit from the plurality of bits indicates an activation of the grant-free data transmission at the at least one transceiver device;

receiving, by the at least one transceiver device, the at least one SS from the base station using at least one of the RRC signalling and the L1 signalling,

decoding, by the at least one transceiver device, the at least one SS;

performing, by the at least one transceiver device, the grant-free data transmission.

28. A system base station for managing a grant-free data transmission in a radio communication network, comprising:

at least one transceiver device;

a base station comprising:

a memory;

a processor; and

a Select Signal (SS) composer, operably coupled to the processor and the memory, configured to:

compose at least one SS for at least one transceiver device from a plurality of transceiver devices in the radio communication network, wherein the at least one SS comprises one of: at least one bit of information indicating a deactivation of the grant-free data transmission at the at least one transceiver device, and a plurality of bits of information indicating transmission parameters, wherein at least one bit from the plurality of bits indicates a deactivation of the grant-free data transmission at the at least one transceiver device; and

transmit the at least one SS comprising to the at least one transceiver device, wherein the at least one SS is transmitted as at least one of a RRC signalling and a L1 signalling; and

wherein the at least one transceiver device:

receives the at least one SS from the base station using at least one of the RRC signalling and the L1 signalling,

decodes the at least one SS; and

wherein said SS composer of said base station:

compose the at least one SS for the at least one transceiver device, wherein the at least one SS is configured to control the grant-free data transmission from the at least one transceiver device, wherein the at least one SS comprises one of: at least one bit of information indicating an activation of the grant-free data transmission at the at least one transceiver device for the grant-free data transmission, and a plurality of bits of information indicating transmission parameters, wherein at least one bit from the plurality of bits indicates an activation of the grant-free data transmission at the at least one transceiver device;

wherein the at least one transceiver device:

receives the at least one SS from the base station using at least one of the RRC signalling and the L1 signalling,

decodes the at least one SS;

performs the grant-free data transmission.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 19, 2018

From: SRINIVASAN, NITHIN; BASKARAN, DHIVAGAR; MOHANDOSS, CHANDRASEKARAN; KAIMALETTU, SUNIL; MILLETH, JENISTON DEVIRAJ KLUTTO; RAMAMURTHI, BHASKAR

To: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY; INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)

Reel/Frame 044664/0358 →

Priority Claims (1)

IN 201741000732 · Jan 7, 2017 · national

Continuity (1)

Related Publication 20180199371A1 · Jul 12, 2018