METHOD, SYSTEM AND DEVICE FOR TRANSMITTING DATA

• US 20150304821A1
• Filed: 07/31/2013
• Published: 10/22/2015
• Est. Priority Date: 11/02/2012
• Status: Active Grant

• Current Assignee: Datang Mobile Communications Equipment Company Limited (China Information Communication Technology Group Co. Ltd.)
• Original Assignee: China Academy of Telecom Technology (China Information Communication Technology Group Co. Ltd.)
• Inventors: LIU, Jianhua, CHEN, Dong
• Granted Patent: US 9,801,029 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

The embodiments of the present application relate to the technical field of wireless communications, and in particular, to a method, system and device for transmitting data, so as to solve the problems existing in the prior art that a multicast message cannot be sent due to FACH limitation in a UMTS system, and a relatively large influence will be brought to the current system information scheduling mechanism if multicast data is issued through system information in an LTE system. The method of the embodiments of the present application comprises: a wireless access network receiving data of at least one group of user equipment from a core network, and the wireless access network transmitting data of a corresponding group to the user equipment in the group through user plane shared resource transmission. Due to this mode of adopting a shared channel to bear multicast data, the current relatively limited FACH resource in a UMTS system is thereby released, and the adoption of a shared channel can enable transfer of multicast data more rapidly and promptly. An LTE adopts a user plane to transmit multicast data, avoiding influence on the system information.

Claims

1. A method for transmitting data, comprising:

receiving, by a radio access network, data of at least one group of User Equipments, UEs, from a core network; and

transmitting, by the radio access network, data of a group to UEs in a corresponding group over a user plane shared resource.

2. The method of claim 1, wherein in a Universal Mobile Telecommunications System, UMTS, Terrestrial Radio Access Network system, the radio access network comprises a Radio Network Controller, RNC, and an evolved Node B, NB;

receiving, by the radio access network, the data of the at least one group of UEs from the core network comprises;

receiving, by the RNC, the data of the at least one group of UEs from the core network via an Iu Broadcast Control, IuBC, interface; and

transmitting, by the radio access network, the data of the group to the UEs in the corresponding group over the user plane shared resource comprises;

transmitting, by the RNC, the data of the at least one group of UEs and corresponding scheduling information to the NB via an Iub interface to instruct the NB to transmit the scheduling information, and the data of the at least one group of UEs to the UEs over a CTCH.

3. The method of claim 2, wherein receiving, by the RNC, the data of the at least one group of UEs from the core network comprises:

receiving, by the RNC, a message from the core network to request for initiating group-cast, wherein the message comprises information to instruct the data to be transmitted over the shared resource, information to identify the group, and the data of the at least one group of UEs.

4. The method of claim 2, wherein after receiving, by the radio access network, the data of the at least one group of UEs from the core network, and before transmitting, by the radio access network, the data of the group to the UEs in the corresponding group over the user plane shared resource, the method further comprises:

for data of one group of UEs, determining, by the RNC, a paging specific occasion location and a Paging Indicator, PI, location according to the group identifier of the group, and transmitting the paging specific occasion location, the PI location, and a Medium Access Control for Enhanced HS-DSCH Protocol Data Unit, MAC-ehs PDU, comprising indication information to indicate that a subsequent payload is data of a Control Traffic Channel, CTCH, channel, to the NB to instruct the NB to transmit the MAC-ehs PDU, including the indication information to indicate that the subsequent payload is data of a CTCH channel, at a transmission location determined from the paging specific occasion location and the PI location, over a Paging Indicator Channel, PICH;

wherein transmitting, by the RNC, the data of the at least one group of UEs and the corresponding scheduling information to the NB via the Iub interface comprises;

for data of one group of UEs, transmitting in an FP frame, by the RNC, the data of the group of UEs and a corresponding Connection Frame Number, CFN, number, and a CFN number corresponding to the scheduling information for scheduling the data of the group of UEs, to the NB via the Iub interface to instruct the NB to map the CTCH onto a High Speed Physical Downlink Shared Channel, HS-PDSCH, transmitting the scheduling information according to a System Frame Number, SFN, corresponding to the CFN number of the scheduling information, and to transmit the data of the corresponding group of UEs according to an SFN corresponding to the CFN number of the data;

wherein the CFN number corresponding to the scheduling information is determined from a timing relationship between the PICH and the scheduling information, and the CFN number corresponding to the data of the group of UEs is a CFN number corresponding to a Common Traffic Channel, CTCH, occasion or any CFN number in a length of time specified by the corresponding scheduling information.

6. The method of claim 2, wherein after receiving, by the radio access network, the data of the at least one group of UEs from the core network, and before transmitting, by the radio access network, the data of the group to the UEs in the corresponding group over the user plane shared resource, the method further comprises:

for data of one group of UEs, transmitting in an FP frame, by the RNC, the data of the group of UEs and a corresponding CFN number, and a paging specific occasion location at which the group of UEs receive the scheduling information for scheduling the data of the group of UEs, to the NB to instruct the NB to map the CTCH onto an HS-PDSCH, to transmit the scheduling information at the paging specific occasion location, and to transmit the data of the corresponding group of UEs according to an SFN corresponding to the CFN number of the data;

wherein the paging specific occasion location is the nearest one of respective paging specific occasion locations determined in the equation of SFN=K+(m*P+(Group_ID mod P))*N to the current paging specific occasion location, wherein N represents a periodicity at which a CTCH reoccurs, K represents an offset of a Cell Broadcast Service, CBS, frame, m represents zero or a positive integer satisfying K+(M*P+(Group_ID mod P))*N≦

MaxSFN, M represents a Transmission Time Interval, TTI, at which the CTCH is mapped to a High Speed-Downlink Shared Channel, HS-DSCH, P represents a periodicity at which the scheduling information occurs, and the Group_ID represents the identifier of the group; and

the CFN number corresponding to the data of the group of UEs is a CFN number corresponding to a CTCH occasion or any CFN number in a length of time specified by the corresponding scheduling information;

wherein the CFN number corresponding to the data of the group of UEs is or any CFN number in the length of time specified by the corresponding scheduling information;

after transmitting, by the RNC in the FP frame, the data of the group of UEs and the corresponding CFN number, and the paging specific occasion location at which the group of UEs receive the scheduling information for scheduling the data of the group of UEs, to the NB, the method further comprises;

for data of one group of UEs, transmitting, by the NB, an HS-PDSCH channel resource corresponding to the data of the group of UEs, over an HS-SCCH scrambled by a group specific HS-DSCH Radio Network Temporary Identity, H-RNTI, at the corresponding SFN according to the CFN information corresponding to the scheduling information in the FP frame, and transmitting the scheduling information over the HS-PDSCH; and

transmitting, by the NB, resource information of the HS-PDSCH over the HS-SCCH scrambled by the group specific H-RNTI, and transmitting the data of the group of UEs over the HS-PDSCH, at the corresponding SFN according to the CFN information corresponding to the data of the group of UEs in the FP frame.

8. The method of claim 1, wherein in a Long Term Evolution, LTE, system, the radio access network includes a Mobility Management Entity, MME, and an NB;

and

after receiving, by the radio access network, the data of the at least one group of UEs from the core network, and before transmitting, by the radio access network, the data of the group to the UEs in the corresponding group over the user plane shared resource, the method further comprises;

transmitting, by the MME, the received data of the at least one group of UEs from the core network to the NB; and

transmitting, by the radio access network, the data of the group to the UEs in the corresponding group over the user plane shared resource comprises;

transmitting, by the NB, the data of the at least one group of UEs and corresponding scheduling information to the UE over a Group Traffic Channel, GTCH;

wherein after receiving, by the radio access network, the data of the at least one group of UEs from the core network, and before transmitting, by the radio access network, the data of the group to the UEs in the corresponding group over the user plane shared resource, the method further comprises;

receiving, by the NB, a message forwarded by the MME from the core network to request for initiating group-cast, wherein the message comprises information to instruct the data to be transmitted over the shared resource, information to identify the group, and the data of the at least one group of UEs;

wherein transmitting, by the NB, the data of the at least one group of UEs and the corresponding scheduling information to the UE over the GTCH comprises;

for data of one group of UEs, mapping, by the NB, the GTCH onto a Physical Downlink Shared Channel, PDSCH, transmitting a PDSCH channel resource corresponding to the data of the group of UEs over a Physical Downlink Control Channel, PDCCH, scrambled by a Group-Radio Network Temporary Identity, G-RNTI, and transmitting the scheduling information over the PDSCH, at a Group Traffic Channel, GTCH, occasion corresponding to the group of UEs, and transmitting resource information of the PDSCH over the PDCCH scrambled by the G-RNTI, and transmitting the data of the group of UEs over the PDSCH corresponding to the resource information, on a GTCH occasion indicated by the scheduling information;

or

for data of one group of UEs, mapping, by the NB, the GTCH to a GCH, mapping the GCH to a Physical Group Channel, PGCH, according to a moment when the GCH is transmitted, and transmitting the data of the at least one group of UEs and the corresponding scheduling information to the UEs over the PGCH.

5. (canceled)

7. (canceled)

9-12. -12. (canceled)

13. A method for transmitting data, comprising:

determining, by a UE, a group to which the UE belongs; and

receiving, by the UE, data of the group, to which the UE belongs, from the network side over a user plane shared resource.

14. The method of claim 13, wherein in a UMTS system, receiving, by the UE, the data of the group, to which the UE belongs, from the network side over the user plane shared resource comprises:

determining, by the UE, a paging specific occasion location and a PI location according to the group identifier of the group to which the UE belongs and receiving an MAC-ehs PDU at the paging specific occasion location and the PI location; and

receiving the data of the group, to which the UE belongs, from the network side over the user plane shared resource upon determining that the MAC-ehs PDU comprises indication information that a subsequent payload is data of a CTCH channel.

15. The method of claim 14, wherein receiving, by the UE, the MAC-ehs PDU comprises:

receiving, by the UE, the MAC-ehs PDU by a group specific PI according to the paging specific occasion location and the PI location;

or

receiving, by the UE, pre-configured HS-DSCH data comprising the MAC-ehs PDU on a group specific occasion according to the paging specific occasion location and the PI location;

or

receiving, by the UE, the HS-PDSCH including the MAC-ehs PDU, over an HS-SCCH scrambled by a group specific H-RNTI, by the group specific PI or on the group specific occasion according to the paging specific occasion location and the PI location.

16. The method of claim 14, wherein receiving, by the UE, the data of the group, to which the UE belongs, from the network side over the user plane shared resource comprises:

detecting, by the UE, the HS-PDSCH channel for the scheduling information according to the broadcast timing relationship; and

fetching, by the UE, the data of the group, to which the UE belongs, in one scheduling periodicity according to the received scheduling information;

or

receiving, by the UE, control information of an HS-SCCH scrambled by a group specific H-RNTI according to the broadcast timing relationship and receiving the scheduling information over the HS-PDSCH according to the control information of the HS-SCCH; and

fetching, by the UE, the data of the group, to which the UE belongs, in one scheduling periodicity of the HS-PDSCH continuously according to the received scheduling information.

18. The method of claim 13, wherein in a UMTS system, receiving, by the UE, the data of the group, to which the UE belongs, from the network side over the user plane shared resource comprises:

receiving, by the UE, scheduling information on a group specific occasion; and

detecting, by the UE, an HS-PDSCH configured on a CTCH occasion continuously for a length of time specified by the scheduling information, and receiving the data of the group, to which the UE belongs, over the HS-PDSCH;

or

receiving, by the UE, the scheduling information over an HS-PDSCH by detecting an HS-SCCH scrambled by a group specific H-RNTI on a group specific occasion; and

detecting, by the UE, an HS-SCCH scrambled by the group specific H-RNTI continuously for a length of time specified by the scheduling information, and receiving the data of the group, to which the UE belongs, over the HS-SCCH.

20. The method of claim 18, wherein the UE determines the paging specific occasion in the equation of:

SFN=K+(m*P+(Group_ID mod P))*N, wherein N represents a periodicity at which a CTCH reoccurs, K represents an offset of a CBS frame, m represents zero or a positive integer satisfying K+(M*P+(Group_ID mod P))*N≦

MaxSFN, M represents a TTI at which the CTCH is mapped to the HS-DSCH, P represents a periodicity at which the scheduling information occurs, and the Group_ID represents the identifier of the group.

21. The method of claim 13, wherein in an LTE system, receiving, by the UE, the data of the group, to which the UE belongs, from the network side over the user plane shared resource comprises:

receiving, by the UE, the data of the group, to which the UE belongs, over a PGCH in a length of time specified by scheduling information upon reception of the scheduling information on a group specific GTCH occasion;

or

receiving, by the UE, scheduling information over a PDSCH resource scheduled by a PDCCH channel; and

detecting, by the UE, a PDCCH scrambled by a G-RNTI in a specific sub-frame in a length of time specified by the scheduling information, and receiving the data of the group, to which the UE belongs, over the PDSCH;

or detecting, by the UE, the PDCCH scrambled by the G-RNTI continuously for the length of time specified by the scheduling information and receiving the data of the group, to which the UE belongs, over the PDSCH,

wherein the UE determines the specific sub-frame in the equation of;

SFN=(K+m*N) or SFN=m*N+(Group_—

ID mod N),

wherein K represents an offset of a CBS frame, N represents a periodicity, of a PDCCH occasion, in a unit of radio frame, m represents zero or a positive integer satisfying M*N+(Group_ID mod N)≦

MaxSFN, and the Group_ID represents the identifier of the group.

17. (canceled)

19. (canceled)

22-23. -23. (canceled)

24. A radio access network device for transmitting data, comprising:

a first receiving module configured to receive data of at least one group of UEs from a core network; and

a transmitting module configured to transmit data of a group to UEs in a corresponding group over a user plane shared resource.

25. The radio access network device of claim 24, wherein in a UMTS system, the radio access network device is an RNC;

the first receiving module is configured;

to receive the data of the at least one group of UEs from the core network via an IuBC interface; and

the transmitting module is configured;

to transmit the data of the at least one group of UEs and corresponding scheduling information to an NB via an Iub interface to instruct the NB to transmit the scheduling information, and the data of the at least one group of UEs to the UEs over a CTCH.

26. The radio access network device of claim 25, wherein the first receiving module is configured:

to receive a message from the core network to request for initiating group-cast, wherein the message comprises information to instruct the data to be transmitted over the shared resource, information to identify the group, and the data of the at least one group of UEs.

27. The radio access network device of claim 25, wherein the transmitting module is further configured:

before the data of the group is transmitted to the UEs in the corresponding group over the user plane shared resource, for data of one group of UEs, to determine a paging specific occasion location and a PI location according to the group identifier of the group, and to transmit the paging specific occasion location, the PI location, and an MAC-ehs PDU comprising indication information to indicate that a subsequent payload is data of a CTCH channel, to the NB to instruct the NB to transmit the MAC-ehs PDU, comprising the indication information to indicate that the subsequent payload is data of a CTCH channel, at a transmission location, determined from the paging specific occasion location and the PI location, over a PICH;

wherein the transmitting module is configured;

for data of one group of UEs, to transmit in an FP frame, the data of the group of UEs and a corresponding CFN number, and a CFN number corresponding to the scheduling information for scheduling the data of the group of UEs to the NB via the Iub interface to instruct the NB to map the CTCH onto an HS-PDSCH, to transmit the scheduling information according to an SFN corresponding to the CFN number of the scheduling information, and to transmit the data of the corresponding group of UEs according to an SFN corresponding to the CFN number of the data,

wherein the CFN number corresponding to the scheduling information is determined from a timing relationship between the PICH and the scheduling information, and the CFN number corresponding to the data of the group of UEs is a CFN number corresponding to a CTCH occasion or any CFN number in a length of time specified by the corresponding scheduling information.

29. The radio access network device of claim 25, wherein the transmitting module is further configured:

before the data of the group is transmitted to the UEs in the corresponding group over the user plane shared resource, for data of one group of UEs, to transmit in an FP frame, the data of the group of UEs and a corresponding CFN number, and a paging specific occasion location at which the group of UEs receive the scheduling information for scheduling the data of the group of UEs, to the NB to instruct the NB to map the CTCH onto an HS-PDSCH, to transmit the scheduling information at the paging specific occasion location, and to transmit the data of the corresponding group of UEs according to an SFN corresponding to the CFN number of the data;

wherein the paging specific occasion location is the nearest one of respective paging specific occasion locations determined in the equation of SFN=K+(m*P+(Group_ID mod P))*N to the current paging specific occasion location, wherein N represents a periodicity at which a CTCH reoccurs, K represents an offset of a CBS frame, m represents zero or a positive integer satisfying K+(M*P+(Group_ID mod P))*N≦

MaxSFN, M represents a TTI at which the CTCH is mapped to an HS-DSCH, P represents a periodicity at which the scheduling information occurs, and the Group_ID represents the identifier of the group; and

the CFN number corresponding to the data of the group of UEs is a CFN number corresponding to a CTCH occasion or any CFN number in a length of time specified by the corresponding scheduling information.

30. The radio access network device of claim 24, wherein in an LTE system, the radio access network device is an NB;

the first receiving module is configured;

to receive and transmit to the NB the data of the at least one group of UEs, from the core network, transmitted by an MME; and

the transmitting module is configured;

to transmit the data of the at least one group of UEs and corresponding scheduling information to the UEs over a GTCH;

wherein the first receiving module is configured;

to receive a message forwarded by the MME from the core network to request for initiating group-cast, wherein the message comprises information to instruct the data to be transmitted over the shared resource, information to identify the group, and the data of the at least one group of UEs;

wherein the transmitting module is configured;

for data of one group of UEs, to map the GTCH onto a PDSCH, to transmit a PDSCH channel resource corresponding to the data of the group of UEs over a PDCCH scrambled by a G-RNTI, and transmit the scheduling information over the PDSCH, at a GTCH occasion corresponding to the group of UEs, and to transmit resource information of the PDSCH over the PDCCH scrambled by the G-RNTI, and transmit the data of the group of UEs over the PDSCH corresponding to the resource information, on a GTCH occasion indicated by the scheduling information;

or

for data of one group of UEs, to map the GTCH to a GCH, to map the GCH to a PGCH according to a moment when the GCH is transmitted, and to transmit the data of the at least one group of UEs and the corresponding scheduling information to the UEs over the PGCH.

28. (canceled)

31-33. -33. (canceled)

34. A UE for transmitting data, comprising:

a determining module configured to determine a group to which the UE belongs; and

a second receiving module configured to receive data of the group, to which the UE belongs, from the network side over a user plane shared resource.

35. The UE of claim 34, wherein in a UMTS system, the second receiving module is configured:

to determine a paging specific occasion location and a PI location according to the group identifier of the group to which the UE belongs, to receive an MAC-ehs PDU at the paging specific occasion location and the PI location, and to receive the data of the group, to which the UE belongs, from the network side over the user plane shared resource upon determining that the MAC-ehs PDU comprises indication information that a subsequent payload is data of a CTCH channel.

36. The UE of claim 35, wherein the second receiving module is configured:

to receive the MAC-ehs PDU by a group specific PI according to the paging specific occasion location and the PI location;

or to receive pre-configured HS-DSCH data comprising the MAC-ehs PDU on a group specific occasion according to the paging specific occasion location and the PI location;

or receives an HS-PDSCH comprising the MAC-ehs PDU, over an HS-SCCH scrambled by a group specific H-RNTI, by the group specific PI or on the group specific occasion at the paging specific occasion location and the PI location.

37. The UE of claim 36, wherein the second receiving module is configured:

to detect the HS-PDSCH channel for scheduling information according to a broadcast timing relationship and to fetch the data of the group, to which the UE belongs, in one scheduling periodicity according to the received scheduling information;

or

to receive control information of an HS-SCCH scrambled by a group specific H-RNTI according to a broadcast timing relationship, to receive scheduling information over an HS-PDSCH according to the control information of the HS-SCCH, and to fetch the data of the group, to which the UE belongs, in one scheduling periodicity of the HS-PDSCH continuously according to the received scheduling information.

39. The UE of claim 34, wherein in a UMTS system, the second receiving module is configured:

to receive scheduling information on a group specific occasion, to detect an HS-PDSCH configured on a CTCH occasion continuously for a length of time specified by the scheduling information, and to receive the data of the group, to which the UE belongs, over the HS-PDSCH;

or

to receive scheduling information over an HS-PDSCH by detecting an HS-SCCH scrambled by a group specific H-RNTI on a group specific occasion, to detect an HS-SCCH scrambled by the group specific H-RNTI continuously for a length of time specified by the scheduling information, and to receive the data of the group, to which the UE belongs, over the HS-SCCH.

41. The UE of claim 39, wherein the second receiving module determines the paging specific occasion in the equation of:

SFN=K+(m*P+(Group_ID mod P))*N, wherein N represents a periodicity at which a CTCH reoccurs, K represents an offset of a CBS frame, m represents zero or a positive integer satisfying K+(M*P+(Group_ID mod P))*N≦

MaxSFN, M represents a TTI at which the CTCH is mapped to an HS-DSCH, P represents a periodicity at which the scheduling information occurs, and the Group_ID represents the identifier of the group.

42. The UE of claim 34, wherein in an LTE system, the second receiving module is configured:

to receive the data of the group, to which the UE belongs, over a PGCH in a length of time specified by scheduling information upon reception of the scheduling information on a group specific GTCH occasion;

or

to receive scheduling information over a PDSCH resource scheduled by a PDCCH channel, to detect a PDCCH scrambled by a G-RNTI in a specific sub-frame in a length of time specified by the scheduling information, and to receive the data of the group, to which the UE belongs, over the PDSCH;

or to detect the PDCCH scrambled by the G-RNTI continuously for the length of time specified by the scheduling information and to receive the data of the group, to which the UE belongs, over the PDSCH,

wherein the UE determines the specific sub-frame in the equation of;

SFN=(K+m*N) or SFN=m*N+(Group_—

ID mod N),

wherein K represents an offset of a CBS frame, N represents a periodicity, of a PDCCH occasion, in a unit of radio frame, m represents zero or a positive integer satisfying M*N+(Group_ID mod N)≦

MaxSFN, and the Group_ID represents the identifier of the group.

38. (canceled)

40. (canceled)

43-44. -44. (canceled)