CN112689305B - Communication system between terminal and base station - Google Patents
Communication system between terminal and base station Download PDFInfo
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- CN112689305B CN112689305B CN202011345409.9A CN202011345409A CN112689305B CN 112689305 B CN112689305 B CN 112689305B CN 202011345409 A CN202011345409 A CN 202011345409A CN 112689305 B CN112689305 B CN 112689305B
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Abstract
The invention provides a communication system between a terminal and a base station. The source mobile terminal transmits data including data flow to the first base station through an uplink, and the third base station transmits the data including the data flow to the target mobile terminal through a downlink; the second base station acts as an auxiliary receiver providing redundant data streams for applications on the source mobile terminal transmitting the data streams; the second base station fuses the data streams received in the uplink data transmission with the redundant data stream passing through the infrastructure network, and the third base station transmits the combined data transmission including the redundant data stream to the target mobile terminal through the downlink; the source mobile terminal receives a downlink data transmission from the first base station including an acknowledgment data stream, the acknowledgment data stream originating from the target mobile terminal, the target mobile terminal sends the uplink data transmission including the acknowledgment data stream to the third base station, and the third base station forwards the acknowledgment data stream to the first base station through the infrastructure network for transmission to the source mobile terminal through the downlink.
Description
Technical Field
The present invention relates to a communication system, and more particularly, to a communication system between a terminal and a base station.
Background
Wireless communications used in media applications require high quality of service (QoS) for transmissions sent from a source user equipment to a target user equipment over a wireless network. This requirement applies both to a wireless uplink connection from a source user equipment to a first base station of the network and to a wireless downlink connection from a second base station of the network to a target device.
The uplink connection from the source user equipment to the first base station of the network is a limiting factor in performance, and the performance of the uplink connection may be affected due to the limited transmission power available when the source user equipment is a small battery-powered portable device, while the second base station of the network may provide sufficient transmission power for the downlink connection. Furthermore, the integration of the second base station of the network into the network fabric infrastructure may allow for more efficient link and channel management on the downlink. Therefore, most networks exhibit unbalanced performance between uplink and downlink for communications sent from a source user equipment to a target user equipment.
Disclosure of Invention
In order to solve the above technical problem, the present invention provides a communication system between a terminal and a base station. The method comprises the following steps: at least one source mobile terminal, at least one target mobile terminal, a first base station, a second base station, a third base station, and an infrastructure network; a source mobile terminal and a target mobile terminal transmit data streams to each other through an infrastructure network using a first base station and a third base station, respectively;
the source mobile terminal transmits data including data flow to the first base station through an uplink, and the third base station transmits the data including the data flow to the target mobile terminal through a downlink; the second base station acts as an auxiliary receiver providing redundant data streams for applications on the source mobile terminal transmitting the data streams; the second base station fuses the data streams received in the uplink data transmission with the redundant data stream passing through the infrastructure network, and the third base station transmits the combined data transmission including the redundant data stream to the target mobile terminal through the downlink;
a source mobile terminal receiving a downlink data transmission from a first base station including an acknowledgment data stream, the acknowledgment data stream originating at a target mobile terminal, the target mobile terminal sending the uplink data transmission including the acknowledgment data stream to a third base station, the third base station forwarding the acknowledgment data stream to the first base station over an infrastructure network for transmission to the source mobile terminal over a downlink;
each base station includes a processing device configured to establish a first time period for receiving a data stream from the source mobile terminal and to transmit a data reception acknowledgement signal to the source mobile terminal for a second time period beginning after the first time period.
Further, the target mobile terminal determines that the data stream and the redundant data stream are related by analyzing the source address of each data stream, and combines the two data streams using a redundancy combining technique at the physical layer.
Further, the second base station performs a hybrid automatic repeat request retransmission and error correction protocol, and the source mobile terminal transmits a data signal to the base station when T is 1, and the second base station receives the data signal when T is 2, and transmits a reception acknowledgement message to the source mobile terminal when T is 3, and receives the reception acknowledgement message when T is 4.
Further, the first base station comprises a transceiver, an encoder/decoder, a network interface, a controller, a trigger parameter monitor and a secondary resource requester, the controller controlling the trigger parameter monitor and the secondary resource requester to request secondary resources for data transmission received on the uplink.
Further, the source mobile terminal receives the reception acknowledgement message within an expected time, which is 4 ms.
Further, the first base station groups all data streams on all channels, delivers to the upper layers in an orderly fashion for pre-reception acknowledgements, and in the downlink, the third base station assumes that a packet has been received and appears to have sent the received acknowledgement message to the source mobile terminal.
Drawings
Fig. 1 is a schematic diagram showing a communication system between a terminal and a base station according to the present invention;
fig. 2A shows a schematic structural diagram of a first base station in an embodiment of the invention;
fig. 2B shows a schematic structural diagram of a second base station in an embodiment of the invention;
Detailed Description
Fig. 1 shows a communication system 100 between a terminal and a base station. The communication system 100 includes a source mobile terminal 102 and a target mobile terminal 112, a first base station 104, a second base station 106 and a third base station 110.
The source mobile terminal 102 and the destination mobile terminal 112 may be mobile phones, smart phones, and USB modem terminals, and the source mobile terminal 102 and the destination mobile terminal 112 communicate with each other using the first base station 104 and the third base station 110, respectively, through the infrastructure network 108. Source mobile terminal 102 and destination mobile terminal 112 may communicate data streams for user applications, such as video/voice call applications or other multimedia applications using high data rate transmissions. The source mobile terminal 102 transmits data comprising a data stream 103a to the first base station 104 via an uplink. The first base station 104 then transmits the data stream 103a to the third base station 110 via the infrastructure network 108. The third base station 110 then transmits the data comprising the data stream 103a to the target mobile terminal 112 over the downlink.
Each base station includes a processing device that controls the operation of the base station and the communication of signals to and from source mobile terminal 102 and destination mobile terminal 112. The processing device is configured to establish a first time period for receiving a data stream 103a from the source mobile terminal and to transmit a data reception acknowledgement signal to the source mobile terminal for a second time period starting after the first time period.
Fig. 1 also shows that the source mobile terminal 102 receives a downlink data transmission comprising an acknowledgment data stream 101 from the first base station 104. The acknowledgment data stream 101 starts at the destination mobile terminal 112, and the destination mobile terminal 112 sends an uplink data transmission including the acknowledgment data stream 101 to the third base station 110. The third base station 110 then forwards the acknowledgement data stream 101 to the first base station 104 via the infrastructure network 108 for transmission via the downlink to the source mobile terminal 102.
As shown in fig. 1, the second base station 106 may act as a secondary receiver, providing additional redundant data streams and improving QoS for applications on the source mobile terminal 102 transmitting data stream 103 a. When the second base station 106 has available resources, the second base station 106 may receive uplink data transmissions comprising the data stream 103a sent by the source mobile terminal 102 to the first base station 104. The second base station 106 may then merge the data stream 103a received in the uplink data transmission with the redundant data stream 103b through the infrastructure network 108. The redundant data stream 103b is then routed to the third base station 110. The third base station 110 then sends the data transmission comprising the redundant data stream 103b to the target mobile terminal 112 over the downlink.
Target mobile terminal 112 may then combine data streams 103a and 103b by utilizing redundant data stream 103b for more accurate data decoding and better quality of service for the application with which source mobile terminal 102 and target mobile terminal 112 are in communication. For example, destination mobile terminal 112 may determine that data flow 103a and redundant data flow 103b are related by analyzing the source address of each data flow. The two data streams 103a and 103b may then be combined at the physical layer, provided to the network layer, and then provided to the destination application in the target mobile terminal 112. The two data streams 103a and 103b may be combined using a redundancy combining technique. Combining may be accomplished using, for example, selective combining, maximal ratio combining, or equal gain combining.
In a preferred embodiment, the second base station also performs a hybrid automatic repeat request retransmission and error correction protocol. The hybrid automatic repeat request operation has a communication delay that is generally expected. First, when T is 1, the source mobile terminal transmits a data signal to the second base station, and when T is 2, the second base station receives the data signal. When T is 3, the second base station sends a reception acknowledgement message to the mobile terminal, and when T is 4, the mobile terminal receives the reception acknowledgement message, which proves that the mobile terminal has successfully transmitted and received the data signal to and by the base station. The source mobile terminal expects to receive its receipt acknowledgement message within the desired time. For the system of the present invention, the desired time is preferably 4 ms. If the mobile terminal does not receive the reception confirmation message within the expected time, the communication fails. The mobile terminal may attempt to retransmit the data. Here, the first base station 104 groups all data streams 103a on all channels and delivers them to the upper layers in an orderly fashion for pre-reception acknowledgement. In the downlink, the third base station 110 assumes that a packet has been received and appears to have sent a received acknowledgement message to the source mobile terminal. In the uplink from the source mobile terminal 102 to the first base station 104, the first base station 104 confirms whether all automatically scheduled messages are received from the source mobile terminal. Since all messages sent by the source mobile terminal are sent according to the permission given by the first base station 104, the messages of the source mobile terminal are scheduled or pre-scheduled by the scheduler, which means that at the first base station 104 the time of all messages sent by the mobile terminal is known. Based on this, the second base station 106 may determine the reception time such that when the source mobile terminal intends to transmit the data stream 103a on the control channel, the redundant data stream 103b will arrive at the destination mobile terminal 112 as specified, e.g., the redundant data stream 103b arrives at the destination mobile terminal 112 4 milliseconds after the source mobile terminal 102 transmits the data stream 103 a.
In a preferred embodiment, the second base station 106 may be configured with an application that controls the second base station 106 to operate as a secondary receiver by communicating with other devices in the system. For example, the second base station 106 may be configured to communicate with the second base station 104 wirelessly or through the infrastructure network 108, such that the first base station 104 may transmit a request for auxiliary resources to the second base station 106, and the second base station 106 can respond appropriately. The second base station 106 may also be configured to communicate with other devices in the network such that the second base station 106 may receive requests for resources from these other devices. For example, a network controller may be configured in the infrastructure network 108 to communicate with the second base station 106 such that a request for secondary resources may be received from the network controller. The network controller may be a device that manages resource usage in a network that includes the first base station 104 and the second base station 106. In a preferred embodiment, the second base station 106 and the source mobile terminal 102 may be configured to communicate with each other such that the second base station 106 may receive a request for auxiliary resources from the source mobile terminal 102. The source mobile terminal 102 may send a request for secondary resources based on the uplink QoS report received from the first base station 104.
Fig. 2A and 2B show simplified diagrams of an exemplary first base station 204 and second base station 206, respectively, configured in accordance with a preferred embodiment of the present disclosure. The configuration of the first base station 204 of fig. 2A may be used to implement the first base station 104 of fig. 1. The configuration of the second base station 206 of fig. 2B may be used to implement the second base station 106 of fig. 1. The first base station 204 and the second base station 206 are configured to request auxiliary resources from the network.
The first base station 204 comprises a transceiver 202, an encoder/decoder 208, a network interface 212, a controller 214, a trigger parameter monitor 260 and an auxiliary resource requester 210. Controller 214 provides overall control of the various components of base station 204. The transceiver 202 communicates with mobile terminals operating in the network by sending downlink transmissions on the downlink 205 and receiving uplink transmissions on the uplink 207. Downlink 205 and uplink 207 may each include one or more RF channels for carrying data associated with one or more devices. Network interface 212 may be used to communicate with the infrastructure network by sending transmissions on link 203 and receiving transmissions on link 201. The infrastructure network may include a corporate infrastructure, the internet, or other type of network. For uplink transmissions received at base station 204, encoder/decoder 208 encodes data received by transceiver 202 on uplink 207 into an appropriate network protocol for transmission to the infrastructure network over link 203 through network interface 212. The network interface 212 then sends the data onward. The network interface 212 may be used to process data encoded by the encoder/decoder 208 and transmit it to an appropriate destination. The network interface 212 may also receive data sent to the base station 204 through the network infrastructure over the link 201 and provide the data to the encoder/decoder 208. The encoder/decoder 208 decodes data received from the network interface 212 into data that can be processed by the transceiver 202. Transceiver 202 may then process the data for transmission in a downlink transmission to a destination device on downlink 205. During operation of the first base station 204, the controller 214 may also control the trigger parameter monitor 260 and the secondary resource requester 210 to request secondary resources for data transmission received on the uplink 207.
As shown in fig. 2B, the second base station 206 comprises a transceiver 219, an encoder/decoder 222, a network interface 224, a controller 217, a secondary resource monitor 218 and a secondary resource request processor 220. A controller 217 provides overall control of the various components of the base station 206. Transceiver 219 may communicate with devices in a network by sending downlink transmissions on downlink 215 and receiving uplink transmissions on uplink 216. Downlink 215 and uplink 216 may each include one or more RF channels for carrying data associated with one or more devices. Network interface 224 may be used to communicate with the infrastructure network by sending transmissions over link 211 and receiving transmissions over link 209. The infrastructure network may include a corporate infrastructure, interactive or other type of network. For uplink transmissions received at base station 206, encoder/decoder 222 encodes data received by transceiver 215 on uplink 216 into the appropriate network protocol and provides the encoded data to network interface 224. The network interface 224 then sends the data to the network infrastructure through the interface. Network interface 224 may include the capability to process and route data encoded by encoder/decoder 222 to the appropriate destination. The network interface 224 may also receive data transmitted from the network infrastructure to the base station 206 over the link 209 and provide the data to the encoder/decoder 222. Encoder/decoder 222 may decode data from a network protocol form into a form that may be processed by a network. The transceiver 219 may then process the data for transmission in a downlink transmission to a target device on the downlink 215.
The assistance request processor 220 may send a positive response to the requesting base station or device. The response to the secondary resource request may be sent using the same communication method as the secondary resource request was received. For example, if a request for secondary resources is received from a network fabric facility over link 209, secondary request processor 220 may send a response to network interface 224, and network interface 224 sends the response to the requesting base station or device over link 211. If a request for secondary resources is received over Wi-Fi on link 230, secondary request handler 220 may send a response over link 232 using a Wi-Fi transceiver implemented in secondary request handler 220.
The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the invention to the scope of the described embodiments. It will also be appreciated by persons skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A communication system between a terminal and a base station, comprising: at least one source mobile terminal, at least one target mobile terminal, a first base station, a second base station, a third base station, and an infrastructure network; a source mobile terminal and a target mobile terminal transmit data streams to each other through an infrastructure network using a first base station and a third base station, respectively;
the source mobile terminal transmits data including data flow to the first base station through an uplink, and the third base station transmits the data including the data flow to the target mobile terminal through a downlink; the second base station acts as an auxiliary receiver providing redundant data streams for applications on the source mobile terminal transmitting the data streams; the second base station fuses the data streams received in the uplink data transmission with the redundant data stream passing through the infrastructure network, and the third base station transmits the combined data transmission including the redundant data stream to the target mobile terminal through the downlink;
wherein the source mobile terminal receives a downlink data transmission from the first base station including an acknowledgment data stream, the acknowledgment data stream originating at the target mobile terminal, the target mobile terminal transmits an uplink data transmission including the acknowledgment data stream to the third base station, the third base station forwards the acknowledgment data stream to the first base station and the second base station over the infrastructure network for transmission to the source mobile terminal over a downlink;
each base station comprises a processing device configured to establish a first time period for receiving a data stream from the source mobile terminal and to transmit a data reception acknowledgement signal to the source mobile terminal for a second time period starting after the first time period;
the second base station executes a hybrid automatic repeat request retransmission and error correction protocol, the source mobile terminal transmits a data signal to the second base station when T is 1, and the second base station receives the data signal when T is 2, the second base station transmits a reception acknowledgement message to the source mobile terminal when T is 3, and the source mobile terminal expects to receive its reception acknowledgement message within a desired time when T is 4; if the mobile terminal does not receive the reception acknowledgement message within the expected time, the source mobile terminal needs to try to retransmit the data;
the second base station determining a reception time such that when the source mobile terminal intends to transmit a data stream on the control channel, the redundant data stream will arrive at the target mobile terminal as specified;
the messages of the source mobile terminal are planned or prearranged by the scheduler, and in the uplink from the source mobile terminal to the first base station, the first base station confirms whether all automatically scheduled messages are received from the source mobile terminal;
the first and second base stations each comprising a transceiver and an encoder/decoder, the transceiver communicating with devices in a network by sending downlink transmissions on a respective downlink and receiving uplink transmissions on an uplink; the encoder/decoder encodes the data received by the transceiver on the respective uplink into the appropriate network protocol and provides the encoded data to the network for processing.
2. The communication system of claim 1, wherein the first base station groups all data streams on all channels and delivers them to the upper layer in an ordered manner for pre-reception acknowledgement; in the downlink, the third base station assumes that a packet has been received and appears to have sent a received acknowledgement message to the source mobile terminal.
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| CN110402544A (en) * | 2017-03-13 | 2019-11-01 | 微软技术许可有限责任公司 | Receiving device with diversity combination |
| CN110431878A (en) * | 2017-03-10 | 2019-11-08 | 微软技术许可有限责任公司 | The radio of software definition for auxiliary receiver |
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| EP2107848B1 (en) * | 2008-03-31 | 2013-03-13 | Mitsubishi Electric R&D Centre Europe B.V. | Method and device for carrying out a handover between base stations of a mobile telecommunication network for a mobile terminal |
| CN111885661B (en) * | 2020-07-30 | 2022-10-11 | 北京神州数码云科信息技术有限公司 | Data center performance event management method and system based on server logs |
| CN111885660B (en) * | 2020-07-30 | 2022-10-11 | 北京神州数码云科信息技术有限公司 | Transmission method and system for system information of multi-path server system based on fusion framework |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110431878A (en) * | 2017-03-10 | 2019-11-08 | 微软技术许可有限责任公司 | The radio of software definition for auxiliary receiver |
| CN110402544A (en) * | 2017-03-13 | 2019-11-01 | 微软技术许可有限责任公司 | Receiving device with diversity combination |
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