CN107734695B - Uplink single-transmission method of terminal, 5G new air interface base station and LTE base station - Google Patents

Uplink single-transmission method of terminal, 5G new air interface base station and LTE base station Download PDF

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Publication number
CN107734695B
CN107734695B CN201710971617.1A CN201710971617A CN107734695B CN 107734695 B CN107734695 B CN 107734695B CN 201710971617 A CN201710971617 A CN 201710971617A CN 107734695 B CN107734695 B CN 107734695B
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base station
uplink
air interface
information
new air
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CN107734695A (en
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韩潇
范斌
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/0406Wireless resource allocation involving control information exchange between nodes
    • H04W72/0426Wireless resource allocation involving control information exchange between nodes between access points
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource
    • H04W72/0446Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource the resource being a slot, sub-slot or frame
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/12Dynamic Wireless traffic scheduling ; Dynamically scheduled allocation on shared channel
    • H04W72/1205Schedule definition, set-up or creation
    • H04W72/1215Schedule definition, set-up or creation for collaboration of different radio technologies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/12Dynamic Wireless traffic scheduling ; Dynamically scheduled allocation on shared channel
    • H04W72/1263Schedule usage, i.e. actual mapping of traffic onto schedule; Multiplexing of flows into one or several streams; Mapping aspects; Scheduled allocation
    • H04W72/1268Schedule usage, i.e. actual mapping of traffic onto schedule; Multiplexing of flows into one or several streams; Mapping aspects; Scheduled allocation of uplink data flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/0486Wireless resource allocation where an allocation plan is defined based on load

Abstract

The embodiment of the invention provides an uplink single-transmission method of a terminal, a 5G new air interface base station and an LTE (Long term evolution) base station, relates to the technical field of communication, and is used for enabling the terminal to realize uplink single-transmission under a double-connection network of the LTE base station and the 5G new air interface base station, and the method comprises the following steps: the 5G new air interface base station sets configuration information according to the service type and the load condition of the base station and sends request information to the LTE base station, and the LTE base station sends response request information to the 5G new air interface base station after receiving the request information; after receiving the response request information, the 5G new air interface base station sends configuration information to the LTE base station; after receiving the configuration information, the LTE base station identifies a terminal accessed to the dual-connection network; and after the terminal is determined to be the terminal which carries out uplink single transmission in the dual-connection network, the LTE base station schedules the service of the terminal which carries out uplink single transmission according to the configuration information. The invention is used in a dual connectivity network.

Description

Uplink single-transmission method of terminal, 5G new air interface base station and LTE base station
Technical Field
The invention relates to the technical field of communication, in particular to an uplink single-transmission method of a terminal, a 5G new air interface base station and an LTE base station.
Background
The dual connection refers to that a user can keep a connection state with multiple systems or multiple carriers so as to improve the user experience. For dual connectivity in the system, the user Data partitioning at different layers of the communication Protocol may be referred to as carrier aggregation operation { user Data partitioning at a MAC (Media Access Control) layer } or dual connectivity operation { user Data partitioning at a PDCP (Packet Data Convergence Protocol) layer }. In the research of 3G and 4G (3rd-Generation, 4rd-Generation, third Generation mobile communication technology, fourth Generation mobile communication technology) mobile communication systems, dual connectivity between different systems is not considered. In the current research of 5G (5rd-Generation, fifth Generation mobile communication technology) communication system, since the candidate frequency band of 5G is higher (e.g. 3.5GHz or 28GHz) than that of 2/3/4G (2rd/3rd/4rd-Generation, 2/3/4 th Generation mobile communication technology) system, the cell coverage of 5G system will be smaller than that of the existing system due to the path loss difference caused by the frequency band, and the operation of dual connectivity can make the user quickly and smoothly switch to LTE (Long Term Evolution) system when moving outside the coverage area of 5G system. On the other hand, because the 4G network in China is still in the construction and upgrading stage, 4G network resources are necessary to be fully utilized to protect the existing investment. Therefore, a dual connection mode of the heterogeneous system is considered, that is, the user establishes connection through the 4G cell and the 5G cell simultaneously.
The dual connection technology in the prior art mainly aims at the interior of an LTE system, and does not consider the support of LTE and 5G heterogeneous systems. In addition, the existing dual-connection technology can realize dual receiving and dual transmitting on both downlink and uplink by default. Because the terminal has the problem of intermodulation and harmonic at the radio frequency when realizing uplink dual-transmission in partial frequency band under the dual-connection system, and because of the limitation of cost, partial terminals cannot simultaneously transmit 4G and 5G carrier waves in uplink, how to realize uplink single-transmission of the terminal under the dual-connection network of the LTE base station and the 5G new air interface base station becomes the problem to be solved based on the problem of uplink dual-transmission of partial terminals on the LTE and 5G heterogeneous system.
Disclosure of Invention
The embodiment of the invention provides an uplink single-transmission method of a terminal, a 5G new air interface base station and an LTE (Long term evolution) base station, which are used for enabling the terminal to realize uplink single-transmission under a double-connection network of the LTE base station and the 5G new air interface.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an uplink single-transmission method for a terminal is provided, where the method is applied to a dual-connection network, where the dual-connection network includes a 5G new air interface base station and an LTE base station, and the method includes:
the 5G new air interface base station sets configuration information according to the service type and the load condition of the base station and sends request information to the LTE base station, wherein the request information is used for informing the LTE base station that the configuration information is about to be sent, and the configuration information comprises information of uplink time slots and information of downlink time slots which are distributed by the 5G new air interface base station for uplink single-transmission terminals;
after receiving the request information, the LTE base station sends response request information to the 5G new air interface base station;
after receiving the response request information, the 5G new air interface base station sends the configuration information to the LTE base station;
after receiving the configuration information, the LTE base station identifies a terminal accessed to the dual connectivity network; and after determining that the terminal is the terminal performing uplink single transmission in the dual-connection network, the LTE base station schedules the service of the terminal performing uplink single transmission according to the configuration information.
In a second aspect, a 5G new air interface base station is provided, which is applied to a dual connectivity network, where the dual connectivity network includes the 5G new air interface base station and an LTE base station, and includes:
the processing unit is used for setting configuration information according to the service type and the load condition of the 5G new air interface base station;
a sending unit, configured to send request information to the LTE base station, where the request information is used to notify the LTE base station that the configuration information set by the processing unit is to be sent, and the configuration information includes information of an uplink time slot and information of a downlink time slot that are allocated by the 5G new air interface base station for a terminal that sends uplink data;
a receiving unit, configured to receive response request information sent by the LTE base station after the LTE base station receives the request information;
the sending unit is further configured to send the configuration information set by the processing unit to the LTE base station after the receiving unit receives the response request information sent by the LTE base station.
In a third aspect, an LTE base station is provided, where the LTE base station is applied to a dual connectivity network, where the dual connectivity network includes a 5G new air interface base station and the LTE base station, and includes:
a receiving unit, configured to receive request information sent by the 5G new air interface base station, where the request information is used to notify the LTE base station that the configuration information is to be sent;
a sending unit, configured to send response request information to the 5G new air interface base station after the receiving unit receives the request information sent by the 5G new air interface base station;
the receiving unit is further configured to receive configuration information set by the 5G new air interface base station according to a service type and a load condition, where the configuration information includes information of an uplink time slot and information of a downlink time slot allocated by the 5G new air interface base station to a terminal with a single uplink transmission;
a judging unit, configured to judge whether a terminal accessed to the dual connectivity network is a terminal performing uplink single transmission after the receiving unit receives the configuration information;
and the processing unit is used for scheduling the service of the uplink single-transmission terminal according to the configuration information after the judging unit determines that the terminal is the uplink single-transmission terminal in the dual-connection network.
In the uplink single-transmission method for the terminal provided by the embodiment of the present invention, the 5G new air interface base station sets configuration information according to its own service type and load condition and transmits request information to the LTE base station, where the request information is used to notify the LTE base station that the configuration information is to be transmitted, and the configuration information includes information of an uplink time slot and information of a downlink time slot allocated by the 5G new air interface base station to the uplink single-transmission terminal; after receiving the request information, the LTE base station sends response request information to the 5G new air interface base station; after receiving the response request information, the 5G new air interface base station sends configuration information to the LTE base station; after receiving the configuration information, the LTE base station identifies a terminal accessed to the dual-connection network; after the terminal is determined to be the terminal performing uplink single transmission in the dual-connection network, the LTE base station schedules the service of the terminal performing uplink single transmission according to the configuration information, so that the terminal can perform uplink single transmission in the dual-connection network of the LTE base station and the 5G new air interface base station.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of an uplink single-shot method of a terminal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of indication of subcarrier intervals, information of uplink timeslots and information of downlink timeslots within 10ms according to an embodiment of the present invention;
fig. 3 is a second flowchart of an uplink single-shot method of a terminal according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a 5G new air interface base station according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an LTE base station according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
It should be noted that, in the embodiments of the present invention, "of", "corresponding" and "corresponding" may be sometimes used in combination, and it should be noted that, when the difference is not emphasized, the intended meaning is consistent.
An embodiment of the present invention provides an uplink single-transmission method for a terminal, which is applied to a dual-connection network, where the dual-connection network includes a 5G new air interface base station and an LTE base station, and as shown in fig. 1, the method includes:
and S1 and the 5G new air interface base station sets configuration information according to the service type and the load condition of the base station.
Specifically, the configuration information includes information of an uplink timeslot and information of a downlink timeslot that are allocated by the 5G new air interface base station for the uplink single-transmission terminal, the 5G new air interface base station configures, based on the service type and the load condition, a timeslot for uplink or downlink transmission that is allocated by the uplink single-transmission terminal, and for example, a typical DL/UL ratio of the service type and the load condition is 2: 1,3:1, or 7: 1. Such configuration is generally semi-static, for example, when the holding of a sports event or a hot spot area is busy and idle according to time, the update of the traffic type and the load condition, and the uplink and downlink load condition can trigger the update of the DL/UL configuration.
It should be noted that the LTE base station and the 5G new air interface base station may be devices of different manufacturers, that is, there is no interaction between the MAC schedulers of the LTE base station and the 5G new air interface base station. Necessary information can be transmitted between the LTE base station and the 5G new air interface base station through an Xn/X2 interface. In this scenario, both the LTE base station and the 5G new air interface base station have GPS, and accurate synchronization information can be obtained through the GPS, and the starting positions of the 5G new air interface base station and the LTE base station in each radio frame are aligned when viewed from the base station side with the LTE base station as a reference.
And S2, the 5G new air interface base station sends request information to the LTE base station.
Specifically, after completing configuring the information of the uplink timeslot and the information of the downlink timeslot, the 5G new air interface base station sends request information to the adjacent LTE base station through the Xn port (or the enhanced X2 interface). The Xn interface is similar to the X2 interface of LTE and is used for exchanging information between an LTE base station and a 5G new air interface base station. The adjacent LTE base station refers to an LTE base station which performs information interaction with a 5G new air interface base station.
It should be noted that the number of adjacent LTE base stations depends on the relative positions of the 5G new air interface base station and the LTE base station: when the 5G new air interface base station is positioned in the coverage of the LTE base station, the 5G new air interface base station only has one adjacent LTE base station; when the 5G new air interface base station is located at the coverage edge of the LTE base station, there are 2 or 3 adjacent LTE base stations for the 5G new air interface base station. The name of the REQUEST information is 5G new air interface _ DLUL _ CONFIG _ REQUEST, the REQUEST information is used for notifying the LTE base station that configuration information is to be sent, and the information specifically transmitted by the interface may be encapsulated in an IE and transmitted through interface signaling.
And S3, after receiving the request information, the LTE base station sends response request information to the 5G new air interface base station.
Specifically, after receiving REQUEST information _ DLUL _ CONFIG _ REQUEST sent by a 5G new air interface base station, the LTE base station replies and sends RESPONSE REQUEST information, where the RESPONSE REQUEST information may be named as _ DLUL _ CONFIG _ REQUEST _ RESPONSE, and the RESPONSE REQUEST information includes an SFN (System Frame Number) of the LTE base station. This information is also passed over the Xn port (or enhanced X2 interface).
Optionally, according to the update period of the information configuration of the uplink time slot and the downlink time slot of the 5G new air interface base station, information interaction between systems may also be performed by using an enhanced S1 interface or an OAM (Operation Administration and Maintenance) network management system signaling.
And S4, after receiving the response request information, the 5G new air interface base station sends configuration information to the LTE base station.
Specifically, after receiving RESPONSE REQUEST information _ DLUL _ CONFIG _ REQUEST _ RESPONSE sent by the LTE base station, the 5G new air interface base station sends configuration information of the 5G new air interface base station, where the configuration information includes an indication of a subcarrier interval of the 5G new air interface base station, information of an uplink time slot within 10ms, and information _ DLUL _ CONFIG of a downlink time slot.
Exemplarily, referring to fig. 2, a schematic diagram of indication of subcarrier spacing and information of uplink timeslot and downlink timeslot within 10ms is shown, where the first 2 bits are used to indicate subcarrier spacing, 00 in the diagram indicates 15kHz subcarrier spacing, and subcarrier spacing of 30kHz and 60kHz can be represented by 01 and 10, respectively. The specific order may vary. The last 10 bits are used to indicate the uplink and downlink configuration condition of the 5G new air interface base station within 10ms, and the actual uplink and downlink configuration of the 5G new air interface base station in the figure is dsudddsadd, that is, downlink, special time slot (including uplink and downlink), uplink, downlink, special time slot (including uplink and downlink), uplink, downlink, and downlink.
Since the 5G new air interface base station may adopt multiple types of subcarriers, it is necessary to transmit Subcarrier spacing indication to notify the LTE base station, an optional Subcarrier spacing (SCS, Subcarrier spacing) may be {15kHz, 30kHz, 60kHz }, it is necessary to indicate 2-bit information, it is not necessary to consider a frequency band above 6GHz, other Subcarrier spacings such as 120kHz and 240kHz do not need to be transmitted, and information overhead can be saved because there is no problem caused by intermodulation. According to different types of subcarriers, the lengths of uplink time slot information and downlink time slot information in 10ms to be transmitted are different and correspond to different subcarrier intervals {15kHz, 30KHz and 60KHz }, the lengths of the uplink time slot information and the downlink time slot information are {10bit, 20bit and 40bit }, downlink transmission and uplink transmission are respectively indicated by 0bit and 1bit, and the time slot with uplink transmission and downlink transmission is regarded as uplink transmission.
Alternatively, referring to fig. 3, after step S4, step S41 is performed.
And S41, after receiving the configuration information sent by the 5G new air interface base station, the LTE base station sends the information of receiving the configuration information.
Specifically, the information of the reception configuration information is _ DLUL _ CONFIG _ ACCEPT. A certain timer may be set, and if the configuration information is not received by the 5G new air interface base station and the time exceeds the timing time, the configuration information will be retransmitted.
Optionally, before performing step S2, the method further includes:
s11, 5G new air interface base station judges whether there is updating of service type and load condition, if it is determined that there is updating of service type and load condition, it is judged whether the updating load of service type and load condition exceeds the threshold value; and if the updated load of the service type and the load condition exceeds the threshold value, resetting the configuration information according to the updated service type and the updated load condition.
Specifically, the 5G new air interface base station triggers sending of new uplink time slot information and downlink time slot information to the LTE base station according to the service type and the load condition or the update of the load. For example, in a part of the area, it may happen that the cell primary service changes from video service (downlink rate is much larger than uplink rate) to live service (downlink rate is slightly larger than uplink rate), and this triggers the update. The threshold is a difference value or a duration (in units of days or weeks) between the uplink updated load and the downlink updated load, and the operator can avoid the configuration information from being updated too frequently by setting the threshold.
And S5, after receiving the configuration information, the LTE base station identifies the terminal accessed to the dual connectivity network.
Specifically, the LTE base station may carry SFNs when sending the response request information, each SFN corresponds to a time length of 10ms, and the LTE base station takes the configuration information into effect when SFN +1 (i.e., the next 10ms) after receiving the configuration information in consideration of information interaction time and time alignment of the LTE base station and the 5G new air interface base station. When the terminal is newly accessed to the LTE base station, the terminal capability reporting process is initiated, and the LTE base station can identify the terminal accessed to the dual-connection network through the received reporting information.
And S6, after the terminal is determined to be the terminal performing uplink single transmission in the dual-connection network, the LTE base station schedules the service of the terminal performing uplink single transmission according to the configuration information.
Specifically, after determining that the terminal is a terminal performing uplink single transmission in a dual connectivity network, referring to fig. 3, the scheduling, by the LTE base station, of the service of the uplink single transmission terminal according to the configuration information specifically includes:
and the LTE base station schedules the uplink service of the terminal on other uplink time slots except the uplink time slot according to the information of the uplink time slot, and/or the LTE base station schedules the downlink service of the terminal on other downlink time slots except the downlink time slot according to the information of the downlink time slot.
Exemplarily, referring to the indication of the subcarrier interval and the schematic diagram of the information of the uplink time slot and the information of the downlink time slot within 10ms shown in fig. 2 as an example, when the LTE base station schedules the terminal as a terminal performing uplink single transmission in the dual connectivity network, to avoid scheduling the uplink traffic for this terminal on slots 2, 3, 7, and 8 in each SFN, the uplink service of the terminal is scheduled on other uplink time slots except uplink time slots, and in addition, since the terminal needs to feed back the hybrid automatic repeat request of the downlink through the uplink, in the frequency division duplex, the timing is required to satisfy the feedback time slot of the harq-DL data transmission time slot +4, therefore, when the LTE base station schedules, it is also necessary to avoid scheduling the downlink traffic of the terminal on the 3rd, 4 th, 8 th and 9 th time slots in each SFN, and scheduling the downlink traffic of the terminal on other downlink time slots except the downlink time slot. The LTE base station may also schedule other terminals in these scheduling-limited time slots, so the overall throughput and resource utilization of the LTE base station are not affected.
It should be noted that, for a terminal performing uplink single transmission in a dual-connectivity network, configuration information of a 5G new air interface base station may be additionally considered when the LTE base station schedules. For such terminals, the scheduling of the scheme needs to be considered when the dual-connection network of the LTE base station and the 5G new air interface base station is maintained, and if the terminals do not work in the dual-connection network state, the scheduling does not need to be limited.
Setting configuration information according to the service type and the load condition of the 5G new air interface base station and sending request information to the LTE base station, wherein the request information is used for informing the LTE base station of sending the configuration information, and the configuration information comprises information of an uplink time slot and information of a downlink time slot which are distributed by the 5G new air interface base station for the uplink single-sending terminal; after receiving the request information, the LTE base station sends response request information to the 5G new air interface base station; after receiving the response request information, the 5G new air interface base station sends configuration information to the LTE base station; after receiving the configuration information, the LTE base station identifies a terminal accessed to the dual-connection network; after the terminal is determined to be the terminal performing uplink single transmission in the dual-connection network, the LTE base station schedules the service of the terminal performing uplink single transmission according to the configuration information, so that the terminal can perform uplink single transmission in the dual-connection network of the LTE base station and the 5G new air interface base station.
Another embodiment of the present invention provides a 5G new air interface base station, which is applied to a dual-connection network, where the dual-connection network includes a 5G new air interface base station and an LTE base station, and as shown in fig. 4, a 5G new air interface base station 10 includes:
the processing unit 101 is configured to set configuration information according to the service type and the load condition of the 5G new air interface base station.
Specifically, the configuration information includes information of an uplink timeslot and information of a downlink timeslot that are allocated by the 5G new air interface base station for the uplink single-transmission terminal, a processing unit of the 5G new air interface base station configures, based on the service type and the load condition, a timeslot for uplink or downlink transmission that is allocated by the uplink single-transmission terminal, and for example, a typical DL/UL ratio of the service type and the load condition is 2: 1,3:1, or 7: 1. Such configuration is generally semi-static, for example, when the holding of a sports event or a hot spot area is busy and idle according to time, the update of the traffic type and the load condition, and the uplink and downlink load condition can trigger the update of the DL/UL configuration.
It should be noted that the LTE base station and the 5G new air interface base station may be devices of different manufacturers, that is, there is no interaction between the MAC schedulers of the LTE base station and the 5G new air interface base station. Necessary information can be transmitted between the LTE base station and the 5G new air interface base station through an Xn/X2 interface. In this scenario, both the LTE base station and the 5G new air interface base station have GPS, and accurate synchronization information can be obtained by the GPS, and from the base station side, the starting positions of the 5G new air interface base station and the LTE base station in each radio frame are aligned for 10 ms.
A sending unit 102, configured to send request information to the LTE base station, where the request information is used to notify the LTE base station that configuration information set by the processing unit is to be sent, and the configuration information includes information of an uplink time slot and information of a downlink time slot that are allocated by a 5G new air interface base station for a terminal that sends uplink data only.
Specifically, after the processing unit of the 5G new air interface base station completes configuration of the information of the uplink time slot and the information of the downlink time slot, the sending unit sends the request information to the adjacent LTE base station through the Xn port (or the enhanced X2 interface). The Xn interface is similar to the X2 interface of LTE and is used for exchanging information between an LTE base station and a 5G new air interface base station. The adjacent LTE base station refers to an LTE base station which performs information interaction with a 5G new air interface base station.
A receiving unit 103, configured to receive response request information sent by the LTE base station after the LTE base station receives the request information.
Specifically, after receiving the request information sent by the 5G new air interface base station, the LTE base station replies and sends the response request information, where the response request information includes an SFN (System Frame Number) of the LTE base station. The information is also transmitted over the Xn port (or enhanced X2 interface), and the receiving unit of the 5G new air interface base station receives the response request message.
Optionally, according to the update period of the information configuration of the uplink time slot and the downlink time slot of the 5G new air interface base station, information interaction between systems may also be performed by using an enhanced S1 interface or an OAM (Operation Administration and Maintenance) network management system signaling.
The transmitting unit 102 is further configured to transmit the configuration information set by the processing unit 101 to the LTE base station after the receiving unit 103 receives the response request information transmitted by the LTE base station.
Specifically, after receiving the response request information sent by the LTE base station, the receiving unit of the 5G new air interface base station sends, to the LTE base station, an indication of a subcarrier interval of the 5G new air interface base station, information of an uplink timeslot within 10ms, and information of a downlink timeslot.
Exemplarily, referring to fig. 2, a schematic diagram of indication of subcarrier spacing and information of uplink timeslot and downlink timeslot within 10ms is shown, where the first 2 bits are used to indicate subcarrier spacing, 00 in the diagram indicates 15kHz subcarrier spacing, and subcarrier spacing of 30kHz and 60kHz can be represented by 01 and 10, respectively. The specific order may vary. The last 10 bits are used to indicate the uplink and downlink configuration condition of the 5G new air interface base station within 10ms, and the actual uplink and downlink configuration of the 5G new air interface base station in the figure is dsudddsadd, that is, downlink, special time slot (including uplink and downlink), uplink, downlink, special time slot (including uplink and downlink), uplink, downlink, and downlink.
Since the 5G new air interface base station may adopt multiple types of subcarriers, it is necessary to transmit Subcarrier spacing indication to notify the LTE base station, an optional Subcarrier spacing (SCS, Subcarrier spacing) may be {15kHz, 30kHz, 60kHz }, it is necessary to indicate 2-bit information, it is not necessary to consider a frequency band above 6GHz, other Subcarrier spacings such as 120kHz and 240kHz do not need to be transmitted, and information overhead can be saved because there is no problem caused by intermodulation. According to different types of subcarriers, the lengths of uplink time slot information and downlink time slot information in 10ms to be transmitted are different, corresponding to different subcarrier intervals {15kHz, 30KHz and 60KHz }, the lengths of the uplink time slot information and the downlink time slot information are {10bit, 20bit and 40bit }, respectively, downlink transmission and uplink transmission are indicated by 0bit and 1bit, and the time slot with uplink transmission and downlink transmission is regarded as uplink transmission.
Optionally, the processing unit is further configured to determine whether the 5G new air interface base station has an update of the service type and the load condition, and if it is determined that the service type and the load condition have an update, determine whether the load of the service type and the load condition update exceeds a threshold value; and if the updated load of the service type and the load condition exceeds the threshold value, resetting the configuration information according to the updated service type and the updated load condition.
Specifically, the 5G new air interface base station triggers sending of new uplink time slot information and downlink time slot information to the LTE base station according to the service type and the load condition or the update of the load. For example, in a part of the area, it may happen that the cell primary service changes from video service (downlink rate is much larger than uplink rate) to live service (downlink rate is slightly larger than uplink rate), and this triggers the update. The threshold is a difference value or a duration (in units of days or weeks) between the uplink updated load and the downlink updated load, and the operator can avoid the configuration information from being updated too frequently by setting the threshold.
Setting configuration information according to the service type and the load condition of the 5G new air interface base station through a processing unit; the sending unit sends request information to the LTE base station, wherein the request information is used for informing the LTE base station of sending configuration information set by the processing unit, and the configuration information comprises information of an uplink time slot and information of a downlink time slot which are allocated by a 5G new air interface base station for a terminal which sends uplink signals; the receiving unit receives response request information sent by the LTE base station after the LTE base station receives the request information; the transmitting unit transmits the configuration information set by the processing unit to the LTE base station after the receiving unit receives the response request information transmitted by the LTE base station. The LTE base station schedules the service of the uplink single-transmission terminal according to the configuration information, so that the 5G new air interface base station can enable the terminal to realize uplink single-transmission in a dual-connection network of the LTE base station and the 5G new air interface base station.
Still another embodiment of the present invention provides an LTE base station, which is applied to a dual connectivity network, where the dual connectivity network includes a 5G new air interface base station and an LTE base station, and as shown in fig. 5, an LTE base station 20 includes:
the receiving unit 201 is configured to receive request information sent by a 5G new air interface base station, where the request information is used to notify an LTE base station that configuration information is to be sent.
Specifically, the configuration information includes information of an uplink timeslot and information of a downlink timeslot that are allocated by the 5G new air interface base station for the uplink single-transmission terminal, the 5G new air interface base station configures, based on the service type and the load condition, a timeslot for uplink or downlink transmission that is allocated by the uplink single-transmission terminal, and for example, a typical DL/UL ratio of the service type and the load condition is 2: 1,3:1, or 7: 1. Such configuration is generally semi-static, for example, when the holding of a sports event or a hot spot area is busy and idle according to time, the update of the traffic type and the load condition, and the uplink and downlink load condition can trigger the update of the DL/UL configuration.
After completing the configuration of the information of the uplink time slot and the information of the downlink time slot, the 5G new air interface base station sends request information to the adjacent LTE base station through the Xn port (or the enhanced X2 interface). And a receiving unit of the LTE base station receives request information sent by the 5G new air interface base station, and an Xn port is similar to an X2 interface of LTE and is used for exchanging information between the LTE base station and the 5G new air interface base station. The adjacent LTE base station refers to an LTE base station which performs information interaction with a 5G new air interface base station.
It should be noted that the number of adjacent LTE base stations depends on the relative positions of the 5G new air interface base station and the LTE base station: when the 5G new air interface base station is positioned in the coverage of the LTE base station, the 5G new air interface base station only has one adjacent LTE base station; when the 5G new air interface base station is located at the coverage edge of the LTE base station, there are 2 or 3 adjacent LTE base stations for the 5G new air interface base station. The name of the REQUEST information is 5G new air interface _ DLUL _ CONFIG _ REQUEST, the REQUEST information is used for notifying the LTE base station that configuration information is to be sent, and the information specifically transmitted by the interface may be encapsulated in an IE and transmitted through interface signaling.
A sending unit 202, configured to send response request information to the 5G new air interface base station after the receiving unit 201 receives the request information sent by the 5G new air interface base station.
Specifically, after receiving request information sent by a 5G new air interface base station, a receiving unit of the LTE base station sends response request information, where the response request information includes an SFN (System Frame Number) of the LTE base station. This information is also passed over the Xn port (or enhanced X2 interface).
Optionally, according to the update period of the information configuration of the uplink time slot and the downlink time slot of the 5G new air interface base station, information interaction between systems may also be performed by using an enhanced S1 interface or an OAM (Operation Administration and Maintenance) network management system signaling.
The receiving unit 201 is further configured to receive configuration information set by the 5G new air interface base station according to the service type and the load condition, where the configuration information includes information of an uplink time slot and information of a downlink time slot allocated by the 5G new air interface base station to the uplink single-transmission terminal.
Specifically, after receiving the response request information sent by the sending unit of the LTE base station, the 5G new air interface base station sends an indication of a subcarrier interval of the 5G new air interface base station itself, and information of an uplink time slot and information of a downlink time slot within 10ms, and the LTE base station receives configuration information set by the 5G new air interface base station according to the service type and the load condition.
Exemplarily, referring to fig. 2, a schematic diagram of indication of subcarrier spacing and information of uplink timeslot and downlink timeslot within 10ms is shown, where the first 2 bits are used to indicate subcarrier spacing, 00 in the diagram indicates 15kHz subcarrier spacing, and subcarrier spacing of 30kHz and 60kHz can be represented by 01 and 10, respectively. The specific order may vary. The last 10 bits are used to indicate the uplink and downlink configuration condition of the 5G new air interface base station within 10ms, and the actual uplink and downlink configuration of the 5G new air interface base station in the figure is dsudddsadd, that is, downlink, special time slot (including uplink and downlink), uplink, downlink, special time slot (including uplink and downlink), uplink, downlink, and downlink.
Since the 5G new air interface base station may adopt multiple types of subcarriers, it is necessary to transmit Subcarrier spacing indication to notify the LTE base station, an optional Subcarrier spacing (SCS, Subcarrier spacing) may be {15kHz, 30kHz, 60kHz }, it is necessary to indicate 2-bit information, it is not necessary to consider a frequency band above 6GHz, other Subcarrier spacings such as 120kHz and 240kHz do not need to be transmitted, and information overhead can be saved because there is no problem caused by intermodulation. According to different types of subcarriers, the lengths of uplink time slot information and downlink time slot information in 10ms to be transmitted are different, corresponding to different subcarrier intervals {15kHz, 30KHz and 60KHz }, the lengths of the uplink time slot information and the downlink time slot information are {10bit, 20bit and 40bit }, respectively, downlink transmission and uplink transmission are indicated by 0bit and 1bit, and the time slot with uplink transmission and downlink transmission is regarded as uplink transmission.
Optionally, the sending unit of the LTE base station is further configured to send information of receiving the configuration information after the receiving unit receives the configuration information sent by the 5G new air interface base station.
Specifically, a certain timer may be set, and if the 5G new air interface base station does not receive the configuration information and exceeds the timing time, the configuration information will be retransmitted.
A determining unit 203, configured to determine whether a terminal accessed to the dual connectivity network is a terminal performing uplink single transmission after the receiving unit 201 receives the configuration information.
Specifically, after the receiving unit of the LTE base station receives the configuration information, the determining unit of the LTE base station determines whether the terminal accessed to the dual connectivity network is a terminal performing uplink single transmission, the sending unit of the LTE base station carries SFNs when sending the response request information, each SFN corresponds to a time length of 10ms, the information interaction time and the time alignment of the LTE base station and the 5G new air interface base station are considered, and the configuration information becomes effective when the LTE base station receives SFN +1 (i.e., the next 10 ms). When the terminal is newly accessed to the LTE base station, the terminal capability reporting process is initiated, and the LTE base station can identify the terminal accessed to the dual-connection network through the received reporting information.
A processing unit 204, configured to schedule, according to the configuration information, a service of the uplink single-transmission terminal after the determining unit 203 determines that the terminal is a terminal performing uplink single-transmission in the dual-connectivity network.
After determining that the terminal is a terminal performing uplink single transmission in the dual connectivity network, the scheduling, by the processing unit of the LTE base station, of the service of the uplink single transmission terminal according to the configuration information specifically includes:
the processing unit is specifically configured to schedule the uplink service of the terminal on other uplink time slots except the uplink time slot according to the information of the uplink time slot, and/or schedule the downlink service of the terminal on other downlink time slots except the downlink time slot according to the information of the downlink time slot.
Exemplarily, referring to the indication of the subcarrier interval and the information of the uplink time slot and the information of the downlink time slot within 10ms as shown in fig. 2 as an example, when the scheduling terminal is a terminal performing uplink single transmission in a dual connectivity network, to avoid scheduling the uplink traffic for this terminal on slots 2, 3, 7, and 8 in each SFN, the uplink service of the terminal is scheduled on other uplink time slots except uplink time slots, and in addition, since the terminal needs to feed back the hybrid automatic repeat request of the downlink through the uplink, in the frequency division duplex, the timing is required to satisfy the feedback time slot of the harq-DL data transmission time slot +4, therefore, when the processing unit of the LTE base station schedules, it is also necessary to avoid scheduling the downlink traffic of the terminal on the 3rd, 4 th, 8 th and 9 th time slots in each SFN, and scheduling the downlink traffic of the terminal on other downlink time slots except the downlink time slot. The processing unit of the LTE base station can also schedule other terminals in these scheduling-limited time slots, so the overall throughput and resource utilization of the LTE base station are not affected.
Receiving request information sent by a 5G new air interface base station through a receiving unit, wherein the request information is used for informing an LTE base station of sending configuration information; after receiving the request information sent by the 5G new air interface base station, the sending unit sends response request information to the 5G new air interface base station; the receiving unit receives configuration information set by the 5G new air interface base station according to the service type and the load condition, wherein the configuration information comprises information of an uplink time slot and information of a downlink time slot which are allocated to the uplink single-transmission terminal by the 5G new air interface base station; the judging unit judges whether the terminal accessed to the dual-connection network is a terminal for performing uplink single transmission or not after the receiving unit receives the configuration information; after the processing unit determines that the terminal is a terminal performing uplink single transmission in the dual-connectivity network, the processing unit schedules the service of the terminal performing uplink single transmission according to the configuration information, so that the terminal can implement uplink single transmission in the dual-connectivity network of the LTE base station and the 5G new air interface base station.
Illustratively, the terminal may specifically be: mobile phone, navigator, Personal Computer (PC), netbook, and Personal Digital Assistant (PDA).
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. An uplink single-transmission method of a terminal is applied to a dual-connection network, wherein the dual-connection network comprises a 5G new air interface base station and an LTE base station, and the method is characterized by comprising the following steps:
the 5G new air interface base station sets configuration information according to the service type and the load condition of the base station and sends request information to the LTE base station, wherein the request information is used for informing the LTE base station that the configuration information is about to be sent, and the configuration information comprises information of uplink time slots and information of downlink time slots which are distributed by the 5G new air interface base station for uplink single-transmission terminals;
after receiving the request information, the LTE base station sends response request information to the 5G new air interface base station;
after receiving the response request information, the 5G new air interface base station sends the configuration information to the LTE base station;
after receiving the configuration information, the LTE base station identifies a terminal accessed to the dual connectivity network; and after determining that the terminal is the terminal performing uplink single transmission in the dual-connection network, the LTE base station schedules the service of the terminal performing uplink single transmission according to the configuration information.
2. The method of claim 1, wherein before sending the request information to the LTE base station, the method further comprises:
the 5G new air interface base station judges whether the service type and the load condition are updated, and if the service type and the load condition are determined to be updated, whether the updated load of the service type and the load condition exceeds a threshold value is judged; and if the updated load of the service type and the load condition exceeds the threshold value, resetting the configuration information according to the updated service type and the updated load condition.
3. The method of claim 1, wherein the scheduling, by the LTE base station, the service of the uplink single-transmission terminal according to the configuration information specifically includes:
the LTE base station schedules the uplink service of the terminal on other uplink time slots except the uplink time slot according to the information of the uplink time slot;
and/or
And the LTE base station schedules the downlink service of the terminal on other downlink time slots except the downlink time slot according to the information of the downlink time slot.
4. A5G new air interface base station is applied to a dual-connection network, the dual-connection network comprises the 5G new air interface base station and an LTE base station, and the base station is characterized by comprising:
the processing unit is used for setting configuration information according to the service type and the load condition of the 5G new air interface base station;
a sending unit, configured to send request information to the LTE base station, where the request information is used to notify the LTE base station that the configuration information set by the processing unit is to be sent, and the configuration information includes information of an uplink time slot and information of a downlink time slot that are allocated by the 5G new air interface base station for a terminal that sends uplink data;
a receiving unit, configured to receive response request information sent by the LTE base station after the LTE base station receives the request information;
the sending unit is further configured to send the configuration information set by the processing unit to the LTE base station after the receiving unit receives the response request information sent by the LTE base station.
5. The 5G new air interface base station according to claim 4,
the processing unit is further configured to determine whether the 5G new air interface base station has an update of a service type and a load condition, and if it is determined that the service type and the load condition have an update, determine whether the load of the service type and the load condition update exceeds a threshold value; and if the updated load of the service type and the load condition exceeds the threshold value, resetting the configuration information according to the updated service type and the updated load condition.
6. The utility model provides a LTE basic station, is applied to in the dual connectivity network, dual connectivity network include 5G new air interface basic station with the LTE basic station, its characterized in that includes:
a receiving unit, configured to receive request information sent by the 5G new air interface base station, where the request information is used to notify the LTE base station that configuration information is to be sent;
a sending unit, configured to send response request information to the 5G new air interface base station after the receiving unit receives the request information sent by the 5G new air interface base station;
the receiving unit is further configured to receive configuration information set by the 5G new air interface base station according to a service type and a load condition, where the configuration information includes information of an uplink time slot and information of a downlink time slot allocated by the 5G new air interface base station to a terminal with a single uplink transmission;
a judging unit, configured to judge whether a terminal accessed to the dual connectivity network is a terminal performing uplink single transmission after the receiving unit receives the configuration information;
and the processing unit is used for scheduling the service of the uplink single-transmission terminal according to the configuration information after the judging unit determines that the terminal is the uplink single-transmission terminal in the dual-connection network.
7. The LTE base station of claim 6,
the processing unit is specifically configured to schedule an uplink service of the terminal on other uplink time slots except the uplink time slot according to the information of the uplink time slot;
and/or
And scheduling the downlink service of the terminal on other downlink time slots except the downlink time slot according to the information of the downlink time slot.
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