# US 2014/0157014 A1 · Method, device and system for data stream transmission > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0157014 A1 - Document ID: US20140157014A1 - Status: Published application - Kind: A1 - Application number: 14/176,712 - Filed: 2014-02-10 - Published: 2014-06-05 - Earliest claimed: 2011-08-10 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Hongguo ZHANG; Guofeng QIAN; Chengguang NIU; Qi ZHANG - Web page: https://patentgrep.com/patent/US20140157014A1 ## CPC - G06F 1/3209: Monitoring remote activity, e.g. over telephone lines or network connections - H04W 4/20: Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel - H04L 41/0833: for reduction of network energy consumption - H04L 41/50: Network service management, e.g. ensuring proper service fulfilment according to agreements - H04L 67/1095: Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes - H04L 67/59: Providing operational support to end devices by off-loading in the network or by emulation, e.g. when they are unavailable - H04W 52/0235: {where the received signal is a power saving command} - G06F 1/3203: Power management, i.e. event-based initiation of a power-saving mode - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - Y02D 30/70: in wireless communication networks - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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 The embodiments of the present disclosure provide a method, a device and a system for data stream transmission, which relate to the field of communication, and can reduce the energy consumption of the data stream transmission between devices. The method includes: receiving, by a resting device, a message indicating to enter into an energy-saving state; after receiving the message indicating to enter into the energy-saving state, sending, by the resting device, stored user information to an on-duty device so that the on-duty device receives and synchronizes user information; and, after the user information is synchronized, setting, by the resting device, the transmission state of the resting as standby and entering into a sleeping state. The embodiments of the present disclosure are used for data stream transmission. ## Claims ### Claim 1 A method for data stream transmission, comprising: receiving a message indicating to enter into an energy-saving state; after receiving the message indicating to enter into the energy-saving state, sending stored user information to an on-duty device, wherein the on-duty device receives and synchronizes the user information; and after the user information is synchronized, setting transmission state as standby and entering into a sleeping state. ### Claim 2 (depends on 1) The method according to claim 1, wherein the message indicating to enter into the energy-saving state is sent by a network management device. ### Claim 3 (depends on 1) The method according to claim 1, wherein setting the transmission state as standby comprises: setting a device priority as low according to a Virtual Router Redundancy Protocol of the device. ### Claim 4 (depends on 1) The method according to claim 1, further comprising: receiving a recovery indication message; after receiving the recovery indication message, receiving and synchronizing the user information sent by the on-duty device; and after the user information is synchronized, setting the transmission state as main and performing a data stream switching. ### Claim 5 (depends on 4) The method according to claim 4, wherein the recovery indication message is sent by the network management device. ### Claim 6 (depends on 4) The method according to claim 4, wherein setting the transmission state as main and performing the data stream switching comprises: distributing a routing to an upstream device to trigger the data stream switching; setting the device priority as high according to a Virtual Router Redundancy Protocol of the device, so as to set the transmission state as main; and sending Address Resolution Protocol packets to a downstream device. ### Claim 7 (depends on 1) The method according to claim 1, wherein when a resting device comprises a main resting device and a standby resting device, while the on-duty device comprises a main on-duty device and a standby on-duty device, sending the stored user information to the on-duty device comprises: sending, by the main resting device, the stored user information to the main on-duty device, and synchronizing, by the main on-duty device, the stored user information with the standby on-duty device; or sending, by the main resting device, the stored user information to the main on-duty device, and sending, by the standby resting device, the stored user information to the standby on-duty device; or sending, by the main resting device, the stored user information to the main on-duty device, and sending, by the main resting device, the stored user information to the standby on-duty device. ### Claim 8 (depends on 4) The method according to claim 4, wherein when a resting device comprises a main resting device and a standby resting device, while the on-duty device comprises a main on-duty device and a standby on-duty device, receiving and synchronizing the user information stored by the on-duty device comprises: receiving and synchronizing, by the main resting device, the user information stored by the main on-duty device, and synchronizing, by the main resting device, the user information with the standby resting device; or receiving and synchronizing, by the main resting device, the user information stored by the main on-duty device, and receiving and synchronizing, by the standby resting device, the user information stored by the standby on-duty device; or receiving and synchronizing, by the main resting device, the user information stored by the main on-duty device, and receiving and synchronizing, by the standby on-duty device, the user information stored by the main on-duty device. ### Claim 9 A method for data stream transmission, comprising: receiving a message indicating to enter into an energy-saving state; after receiving the message indicating to enter into the energy-saving state, receiving and synchronizing user information sent by a resting device; and after the user information is synchronized, setting transmission state as main and performing a data stream switching. ### Claim 10 (depends on 9) The method according to claim 9, wherein the message indicating to enter into the energy-saving state is sent by a network management device. ### Claim 11 (depends on 9) The method according to claim 9, wherein setting the transmission state as main and performing the data stream switching comprises: distributing a routing to an upstream device to trigger the data stream switching; setting the device priority as high according to a Virtual Router Redundancy Protocol of the device, so as to set the transmission state as main; and sending Address Resolution Protocol packets to a downstream device. ### Claim 12 (depends on 9) The method according to claim 9, further comprising: receiving a recovery indication message; after receiving the recovery indication message, sending stored user information to the resting device so that the resting device receives and synchronizes the user information; and after the user information is synchronized, setting the transmission state as standby. ### Claim 13 (depends on 12) The method according to claim 12, wherein the recovery indication message is sent by a network management device. ### Claim 14 (depends on 12) The method according to claim 12, wherein setting the transmission state as standby comprises: setting the device priority as low according to a Virtual Router Redundancy Protocol. ### Claim 15 (depends on 9) The method according to claim 9, wherein when an on-duty device comprises a main on-duty device and a standby on-duty device, while the resting device comprises a main resting device and a standby resting device, receiving and synchronizing the user information sent by the resting device comprises: receiving and synchronizing, by the main on-duty device, the user information sent by the main resting device, and synchronizing, by the main on-duty device, the user information with the standby on-duty device; or receiving and synchronizing, by the main on-duty device, the user information sent by the main resting device, and receiving and synchronizing, by the standby on-duty device, the user information sent by the standby resting device; or receiving and synchronizing, by the main on-duty device, the user information sent by the main resting device, and receiving and synchronizing, by the standby on-duty device, the user information sent by the main resting device. ### Claim 16 (depends on 12) The method according to claim 12, wherein when an on-duty device comprises a main on-duty device and a standby on-duty device, while the resting device comprises a main resting device and a standby resting device, sending the stored user information to the resting device comprises: sending, by the main on-duty device, the stored user information to the main resting device, and synchronizing, by the main resting device, the user information with the standby resting device; or sending, by the main on-duty device, the stored user information to the main resting device, and sending, by the standby on-duty device, the stored user information to the standby resting device; or sending, by the main on-duty device, the stored user information to the main resting device, and sending, by the main on-duty device, the stored user information to the main resting device. ### Claim 17 A resting device for data transmission, comprising: a receiving unit configured to receive a message indicating to enter into an energy-saving state; a synchronizing unit configured to send stored user information to an on-duty device for data transmission so that the on-duty device for data transmission receives and synchronizes the user information, after the receiving unit receives the message indicating to enter into the energy-saving state; and a setting unit configured to set transmission state as standby and enter into the sleeping state, after the user information is synchronized. ### Claim 18 (depends on 17) The resting device for data transmission according to claim 17, wherein, the receiving unit is further configured to receive a recovery indication message; the synchronizing unit is further configured to receive and synchronize the user information sent by the on-duty device for data transmission, after the receiving unit receives the recovery indication message; and the setting unit is further configured to set the transmission state as main and perform a data stream switching, after the user information is synchronized. ### Claim 19 An on-duty device for data transmission, comprising: a receiving unit configured to receive a message indicating to enter into an energy-saving state; a synchronizing unit configured to receive and synchronize user information sent by a resting device for data transmission, after the receiving unit receives the message indicating to enter into the energy-saving state; and a setting unit configured to set transmission state as main and perform a data stream switching, after the user information is synchronized. ### Claim 20 (depends on 19) The on-duty device for data transmission according to claim 19, wherein, the receiving unit is further configured to receive a recovery indication message; the synchronizing unit is further configured to send the stored user information to the resting device for data transmission so that the resting device for data transmission receives and synchronizes the user information, after the receiving unit receives the recovery indication message; and the synchronizing unit is further configured to set the transmission state as standby after the user information is synchronized. ### Claim 21 A system for data stream transmission, comprising: a resting device for data transmission configured to: receive a message indicating to enter into an energy-saving state; send stored user information to an on-duty device for data transmission after receiving the message indicating to enter into the energy-saving state; and set transmission state of the resting device as standby and enter into a sleeping state after the user information is synchronized; the on-duty device for data transmission configured to: receive a message indicating to enter the energy-saving state; receive and synchronize the user information sent by the resting device for data transmission after receiving the message indicating to enter into the energy-saving state; and set the transmission state of the on-duty device as main and perform a data stream switching after the user information is synchronized; and a network management device configured to detect the network traffic, send the message indicating to enter into the energy-saving state to the resting device for data transmission, and send the message indicating to enter into the energy-saving state to the on-duty device for data transmission. ### Claim 22 (depends on 21) The system for data stream transmission according to claim 21, wherein, the resting device for data transmission is further configured to: receive a recovery indication message; receive and synchronize the user information sent by the on-duty device for data transmission after receiving the recovery indication message; and set the transmission state of the resting device as main and perform a data stream switching after the user information is synchronized; the on-duty device for data transmission is further configured to: receive a recovery indication message; send the stored user information to the resting device for data transmission so that the resting device for data transmission receives and synchronizes the user information, after receiving the recovery indication message; and set the transmission state of the on-duty device as standby after the user information is synchronized; and the network management device is further configured to detect the network traffic, send the recovery indication message to the resting device for data transmission, and send the recovery indication message to the on-duty device for data transmission.