# US 2019/0174460 A1 · Method for transmitting multicast service, method for receiving multicast service, and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174460 A1 - Document ID: US20190174460A1 - Status: Published application - Kind: A1 - Application number: 16/322,553 - Filed: 2017-07-24 - Published: 2019-06-06 - Earliest claimed: 2016-08-12 - Assignees: China Academy of Telecommunications Technology - Applicants: China Academy of Telecommunications Technology - Inventors: Yuan ZHANG; Jing LIANG; Jing FU; Yan WANG - Web page: https://patentgrep.com/patent/US20190174460A1 ## CPC - H04W 72/30: Resource management for broadcast services - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 27/2666: {Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length} - H04W 4/06: Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services - H04W 4/20: Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel - H04W 72/12: Wireless traffic scheduling - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A method and an apparatus for transmitting a multicast service and a method and an apparatus for receiving a multicast service are provided. The method for receiving a multicast service includes receiving information about the multicast service transmitted by a network side on carriers, the carriers being an anchor carrier and/or non-anchor carriers; selecting a target carrier from the carriers according to the information about the multicast service, wherein the target carrier is the anchor carrier or the non-anchor carrier. ## Claims ### Claim 1 A method for transmitting a multicast service, comprising: transmitting information about the multicast service by a network side on carriers, wherein the carriers are an anchor carrier and/or non-anchor carriers. ### Claim 2 (depends on 1) The method according to claim 1, wherein, transmitting the information about the multicast service by the network side on the carriers, comprises: transmitting by the network side, on the non-anchor carriers, a multicast service channel of the non-anchor carriers, a multicast control channel of the non-anchor carriers, and a multicast control channel updating indication of the non-anchor carriers; transmitting by the network side, on the anchor carrier, a multicast service channel of the anchor carrier, a multicast control channel of the anchor carrier, a multicast control channel updating indication of the anchor carrier, first information for receiving the multicast control channel of the anchor carrier, second information for receiving the multicast control channel of the non-anchor carriers, third information for receiving the multicast control channel updating indication of the anchor carrier, and fourth information for receiving the multicast control channel updating indication of the non-anchor carriers; or the transmitting the information about the multicast service by the network side on the carriers, comprises: transmitting, by the network side on the non-anchor carriers, a multicast service channel of the non-anchor carriers and a multicast control channel updating indication of the non-anchor carriers; transmitting, by the network side transmits on the anchor carrier, a multicast service channel of the anchor carrier, a multicast control channel of the anchor carrier, a multicast control channel updating indication of the anchor carrier, first information for receiving the multicast control channel of the anchor carrier, third information for receiving the multicast control channel updating indication of the anchor carrier, and fourth information for receiving the multicast control channel updating indication of the non-anchor carriers; or the transmitting the information about the multicast service by the network side on the carriers, comprises: transmitting, by the network side on the non-anchor carriers, a multicast service channel of the non-anchor carriers, a multicast control channel of the non-anchor carriers, and a multicast control channel updating indication of the non-anchor carriers; transmitting, by the network side on the anchor carrier, a multicast control channel of the anchor carrier, a multicast control channel updating indication of the anchor carrier, first information for receiving the multicast control channel of the anchor carrier, second information for receiving the multicast control channel of the non-anchor carriers, third information for receiving the multicast control channel updating indication of the anchor carrier, and fourth information for receiving the multicast control channel updating indication of the non-anchor carriers; or the transmitting the information about the multicast service by the network side on the carriers, comprises: transmitting, by the network side on the non-anchor carriers, a multicast service channel of the non-anchor carriers and a multicast control channel updating indication of the non-anchor carriers; transmitting, by the network side on the anchor carrier, a multicast control channel of the anchor carrier, a multicast control channel updating indication of the anchor carrier, third information for receiving the multicast control channel updating indication of the anchor carrier, fourth information for receiving the multicast control channel updating indication of the non-anchor carriers, and first information for receiving the multicast control channel of the anchor carrier; or the transmitting the information about the multicast service by the network side on the carriers, comprises: transmitting, by the network side on the non-anchor carriers, a multicast service channel of the non-anchor carriers and a multicast control channel updating indication of the non-anchor carriers; transmitting, by the network side on the anchor carrier, a multicast control channel of the anchor carrier, first information for receiving the multicast control channel of the anchor carrier, and fourth information for receiving the multicast control channel updating indication of the non-anchor carriers. ### Claim at position 3 -6. (canceled) ### Claim 7 (depends on 2) The method according to claim 2, wherein, the multicast control channel of the anchor carrier carries information about non-anchor carriers supporting a multicast service. ### Claim 8 (depends on 7) The method according to claim 7, wherein, the information about the non-anchor carriers supporting the multicast service, comprises: downlink operation frequency bins of the non-anchor carriers, uplink operation frequency bins of the non-anchor carriers, an index of the non-anchor carriers, a bitmap configuration of available downlink subframes, a downlink gap configuration, and information about in-band carriers. ### Claim 9 (canceled) ### Claim 10 (depends on 2) The method according to claim 2, wherein, the network side broadcasts information about the non-anchor carriers supporting the multicast service on the anchor carrier. ### Claim 11 (depends on 10) The method according to claim 10, wherein, the information about the non-anchor carriers supporting the multicast service comprises: downlink operation frequency bins of the non-anchor carriers, uplink operation frequency bins of the non-anchor carriers, an index of the non-anchor carriers, a bitmap configuration of available downlink subframes, a downlink gap configuration, and information about in-band carriers. ### Claim 12 (depends on 2) The method according to claim 2, wherein, the first information for receiving the multicast control channel of the anchor carrier comprises a repetition period, an offset, a first subframe, a duration and a updating period of the multicast control channel of the anchor carrier; and/or the second information for receiving the multicast control channel of the non-anchor carriers comprises: a repetition period, an offset, a first subframe, a duration and a updating period of the multicast control channel of the non-anchor carriers; and/or the third information for receiving the multicast control channel updating indication of the anchor carrier comprises: a repetition period, an offset, a first subframe, and a duration of the multicast control channel updating indication of the anchor carrier; and/or the fourth information for receiving the multicast control channel updating indication of the non-anchor carriers comprises: a repetition period, an offset, a first subframe, and a duration of the multicast control channel updating indication of the non-anchor carriers. ### Claim at position 10 -15. (canceled) ### Claim 16 A method for receiving a multicast service, the method being applied in a terminal and comprising: receiving information about the multicast service transmitted by a network side on carriers, wherein the carriers are an anchor carrier and/or non-anchor carriers; selecting a target carrier from the carriers according to the information about the multicast service, and receiving the multicast service on the selected target carrier, wherein the target carrier is the anchor carrier and/or the non-anchor carrier. ### Claim 17 (depends on 16) The method according to claim 16, wherein, when the network side transmits, on the anchor carrier, fourth information for receiving a multicast control channel updating indication of the non-anchor carriers, the method further comprises: receiving, by the terminal on the anchor carrier, the fourth information for receiving the multicast control channel updating indication of the non-anchor carriers, and receiving, on the non-anchor carriers according to the fourth information, a multicast control channel updating indication of the non-anchor carriers. ### Claim 18 (canceled) ### Claim 19 (canceled) ### Claim 20 (depends on 16) The method according to claim 16, wherein, the selecting a target carrier from the carriers according to the information about the multicast service, comprises: receiving, by the terminal on the anchor carrier, information about the non-anchor carriers capable of supporting the multicast service; selecting a carrier supporting the multicast service as the target carrier, by the terminal from the carriers according to the information about the multicast service and information about the non-anchor carriers supporting the multicast service. ### Claim 21 (depends on 20) The method according to claim 20, wherein, when the multicast control channel of the anchor carrier transmitted on the anchor carrier by the network side carries the information about the non-anchor carriers supporting the multicast service, the receiving, by the terminal on the anchor carrier, information about the non-anchor carriers supporting the multicast service, comprises: selecting, by the terminal from the information about the multicast service transmitted on the carriers, the multicast control channel of the anchor carrier transmitted on the anchor carrier; parsing the multicast control channel of the anchor carrier, and determining the information about the non-anchor carriers supporting the multicast service. ### Claim 22 (depends on 20) The method according to claim 20, wherein, when the network side broadcasts the information about the non-anchor carriers supporting the multicast service on the anchor carrier, the receiving, by the terminal on the anchor carrier, information about the non-anchor carriers supporting the multicast service, comprises: receiving, by the terminal, a system message broadcast by the network side, and parsing the system message and determining the information about the non-anchor carriers supporting the multicast service. ### Claim 23 (depends on 21) The method according to claim 21, wherein, the information about the non-anchor carriers supporting the multicast service comprises: downlink operation frequency bins of the non-anchor carriers, uplink operation frequency bins of the non-anchor carriers, an index of the non-anchor carriers, a bitmap configuration of available downlink subframes, a downlink gap configuration, and information about in-band carriers. ### Claim 24 (depends on 16) The method according to claim 16, wherein, when the network side transmits a multicast control channel of the anchor carrier on the anchor carrier and transmits first information for receiving the multicast control channel of the anchor carrier, the receiving the information about the multicast service transmitted by the network side on the carriers, comprises: receiving the first information for receiving the multicast control channel of the anchor carrier, the first information being transmitted by the network side on the anchor carrier; receiving the multicast control channel of the anchor carrier on the anchor carrier according to the first information; and/or when the network side transmits, on the anchor carrier. second information for receiving a multicast control channel of the non-anchor carriers, the receiving the information about the multicast service transmitted by the network side on the carriers, comprises: receiving the second information for receiving the multicast control channel of the non-anchor carriers transmitted by the network side on the anchor carrier; receiving, on the non-anchor carriers, the multicast control channel of the non-anchor carriers according to the second information. ### Claim 25 (canceled) ### Claim 26 (depends on 24) The method according to claim 24, wherein, contents transmitted by the network side in the multicast control channel of the anchor carrier comprise: a Public Land Mobile Network Identifier of the multicast services supported by the network side, a Temporary Mobile Group Identifier (TMGI) of the multicast services supported by the network side, scheduling information about the multicast service channel of the non-anchor carriers transmitted on the non-anchor carriers; or the contents transmitted by the network side in the multicast control channel of the non-anchor carriers comprise: the Public Land Mobile Network Identifier of the multicast services supported by the network side, the TMGI of the multicast services supported by the network side, scheduling information about the multicast service channel of the non-anchor carriers transmitted on the non-anchor carriers. ### Claim 27 (canceled) ### Claim 28 (depends on 24) The method according to claim 24, wherein, the first information for receiving the multicast control channel of the anchor carrier comprises: a repetition period, an offset, a first subframe, a duration and a updating period of the multicast control channel of the anchor carrier; and/or the second information for receiving the multicast control channel of the non-anchor carriers comprises: a repetition period, an offset, a first subframe, a duration and a updating period of the multicast control channel of the non-anchor carriers. ### Claim at position 24 -34. (canceled) ### Claim 35 (depends on 16) The method according to claim 16, wherein when the network side transmits, on the anchor carrier, third information for receiving a multicast control channel updating indication of the anchor carrier, the method further comprises: receiving, by the terminal on the anchor carrier, the third information for receiving the multicast control channel updating indication of the anchor carrier, and receiving the multicast control channel updating indication of the anchor carrier on the anchor carrier according to the third information. ### Claim 36 (canceled) ### Claim 37 (canceled) ### Claim 38 (depends on 16) The method according to claim 16, wherein, after receiving the multicast service on the selected target carrier, the method further comprises: reporting, on the selected target carrier, the multicast service interested by the terminal. ### Claim at position 29 -76. (canceled) ### Claim 77 (depends on 1) An apparatus for transmitting a multicast service, the apparatus being applied to a network side and comprising: a processor; a storage connected to the processor through a bus interface; and a transceiver connected to the processor through the bus interface; wherein the storage is configured to store programs and data used by the processor when the processor performs operations, and the multicast service and the information about the multicast service is transmitted through the transceiver, and when the processor invokes and executes the programs and the data stored in the storage, the processor implements the method according to claim 1. ### Claim 78 (depends on 16) An apparatus for receiving a multicast service, the apparatus being applied to a terminal and comprising: a processor; a storage connected to the processor through a bus interface; and a transceiver connected to the processor through the bus interface; wherein the storage is configured to store programs and data used by the processor when the processor performs operations, and the multicast service and the information about the multicast service is received through the transceiver, and when the processor invokes and executes the programs and the data stored in the storage, the processor implements the method according to claim 16.