CN108617016B - Carrier aggregation radio resource control method and system - Google Patents
Carrier aggregation radio resource control method and system Download PDFInfo
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- CN108617016B CN108617016B CN201611160236.7A CN201611160236A CN108617016B CN 108617016 B CN108617016 B CN 108617016B CN 201611160236 A CN201611160236 A CN 201611160236A CN 108617016 B CN108617016 B CN 108617016B
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Abstract
The invention discloses a carrier aggregation wireless resource control method and a carrier aggregation wireless resource control system, and relates to the field of communication. The method comprises the steps that when data streams need to be transmitted between a main user terminal and a corresponding main base station, the main base station and the main user terminal establish main RRC connection, the main base station selects an idle terminal in a mobile ad hoc network where the main user terminal is located as an auxiliary user terminal, after the main base station establishes connection with the auxiliary user terminal, the main base station sends an auxiliary RRC connection establishment completion message to the main user terminal, and after the main base station successfully establishes the main RRC connection with the main user terminal, the main base station sends an initial UE message to a core network, wherein the initial UE message comprises a carrier aggregation service request sent by the main user terminal. Based on the method for controlling carrier aggregation radio resources provided by the above embodiment of the present invention, by using the dual RRC connection method, the problem of complex and frequent interaction between base stations can be effectively solved when carrier aggregation is implemented.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and a system for controlling carrier aggregation radio resources.
Background
Currently, technologies for improving peak transmission rate of a mobile terminal include L TE (L ong Term Evolution ) carrier aggregation technology and L0 TE/W L1 AN (Wireless L2 optical Area Network, Wireless local Area Network) bandwidth aggregation technology, L3 TE carrier aggregation technology aggregates L TE carriers of a plurality of different frequency bands into one logical carrier for use and provides a peak transmission rate higher than L TE single carrier, dual connectivity is also a carrier aggregation applied to small cells and non-ideal backhaul scenarios, L TE/W L AN bandwidth aggregation technology aggregates L TE and W L AN two different Wireless access bandwidths into one logical bandwidth for use and provides a peak transmission rate higher than L TE or W L AN.
Meanwhile, the single RRC connection method in the prior art not only increases the time delay of RRC connection, but also needs to frequently occupy an X2 interface between base stations due to the transfer of messages such as RRC connection, RRC connection reestablishment, RRC connection reconfiguration, RRC connection release and the like caused by the movement of a user terminal and the switching of busy and idle states.
Disclosure of Invention
The embodiment of the invention provides a carrier aggregation radio resource control method, which effectively solves the problem of complex and frequent interaction between base stations by adopting a double RRC connection method.
According to an aspect of the present invention, there is provided a carrier aggregation radio resource control method, including:
when a main user terminal and a corresponding main base station need to transmit data streams, the main base station establishes main RRC connection with the main user terminal;
the main base station selects an idle terminal as an auxiliary user terminal in a mobile ad hoc network where the main user terminal is located;
after establishing connection with the auxiliary user terminal, the main base station sends an auxiliary RRC connection establishment completion message to the main user terminal;
after the main RRC connection is successfully established with the main user terminal, the main base station sends an initial UE message to a core network, wherein the initial UE message comprises a carrier aggregation service request sent by the main user terminal.
In one embodiment, in a same-base-station scenario, the selecting, by a master base station, an idle terminal as an auxiliary user terminal in a mobile ad hoc network where a master user terminal is located includes:
the main base station selects an idle user terminal in the mobile ad hoc network as an auxiliary user terminal according to the network information of the mobile ad hoc network, the context and busy-idle state of other user terminals in the mobile ad hoc network where the main user terminal is located.
In one embodiment, the establishing the connection between the main base station and the auxiliary user terminal comprises:
the main base station sends an auxiliary RRC paging to the auxiliary user terminal;
the auxiliary user terminal sends an auxiliary RRC connection request to the main base station after receiving the auxiliary RRC paging;
the main base station sends an auxiliary RRC connection establishment message to the auxiliary user terminal according to the auxiliary RRC connection request;
and the auxiliary user terminal sends an auxiliary RRC connection establishment completion message to the main base station according to the auxiliary RRC connection establishment message.
In one embodiment, in a scenario of a heterogeneous base station, the selecting, by a master base station, an idle terminal as an auxiliary user terminal in a mobile ad hoc network in which a master user terminal is located includes:
the main base station selects an auxiliary base station according to the network information of the mobile ad hoc network and the load state of the base station where the idle user terminal in the mobile ad hoc network is located;
and the auxiliary base station selects an idle user terminal from the mobile ad hoc network and the auxiliary base station as an auxiliary user terminal according to the network information of the mobile ad hoc network, the context and busy-idle state of other user terminals in the mobile ad hoc network where the main user terminal is located.
In one embodiment, the establishing the connection between the main base station and the auxiliary user terminal comprises:
the auxiliary base station sends an auxiliary RRC paging to the auxiliary user terminal;
the auxiliary user terminal sends an auxiliary RRC connection request to the auxiliary base station after receiving the auxiliary RRC paging;
the auxiliary base station sends an auxiliary RRC connection establishment message to the auxiliary user terminal according to the auxiliary RRC connection request;
the auxiliary user terminal sends an auxiliary RRC connection establishment completion message to the auxiliary base station according to the auxiliary RRC connection establishment message;
and the auxiliary base station sends an auxiliary RRC connection establishment completion message to the main base station.
In one embodiment, when the primary base station sends downlink data to the primary user terminal, the establishing, by the primary base station, a primary RRC connection with the primary user terminal includes:
the main base station sends main RRC paging to a main user terminal;
the master user terminal sends a master RRC connection request to the master base station after receiving the master RRC paging;
the main base station sends a main RRC connection establishment message to the main user terminal according to the main RRC connection request;
and after receiving an auxiliary RRC connection establishment completion message sent by the main base station, the main user terminal sends a main RRC connection establishment completion message to the main base station according to the main RRC connection establishment message, wherein the main RRC connection establishment completion message comprises a carrier aggregation service request.
In one embodiment, when the primary user terminal has uplink data, the establishing, by the primary base station, a primary RRC connection with the primary user terminal includes:
a master user terminal sends a master RRC connection request to a master base station;
the main base station sends a main RRC connection establishment message to the main user terminal according to the main RRC connection request;
the master user terminal sends a master RRC connection establishment completion message to the master base station after receiving the master RRC connection establishment message;
and the main base station executes the step of selecting the auxiliary user terminal after receiving the main RRC connection establishment completion message.
In one embodiment, in the same base station scenario, the primary RRC connection setup complete message sent by the primary user terminal to the primary base station includes an aggregated carrier service request.
In one embodiment, in the case of a different base station, the primary user terminal sends a carrier aggregation service request to the primary base station after receiving the secondary RRC connection setup complete message sent by the primary base station.
According to another aspect of the present invention, there is provided a carrier aggregation radio resource control system, including:
the main base station is used for establishing main RRC connection with the main user terminal when data flow needs to be transmitted between the main base station and the corresponding main user terminal; selecting an idle terminal as an auxiliary user terminal in a mobile ad hoc network where a main user terminal is located; after establishing connection with the auxiliary user terminal, sending an auxiliary RRC connection establishment completion message to the main user terminal; after a main RRC connection is successfully established with a main user terminal, an initial UE message is sent to a core network, wherein the initial UE message comprises a carrier aggregation service request sent by the main user terminal;
in one embodiment, the master base station specifically selects an idle ue in the ad hoc network as the secondary ue in the same base station scene according to the network information of the ad hoc network, the context and busy/idle state of other ues in the ad hoc network where the master user terminal is located.
In one embodiment, the primary base station is further configured to send a secondary RRC page to the secondary user terminal when establishing a connection with the secondary user terminal; according to an auxiliary RRC connection request sent by an auxiliary user terminal, sending an auxiliary RRC connection establishment message to the auxiliary user terminal;
the auxiliary user terminal is also used for sending an auxiliary RRC connection request to the main base station after receiving the auxiliary RRC paging; and sending an auxiliary RRC connection establishment completion message to the main base station according to the auxiliary RRC connection establishment message sent by the main base station.
In one embodiment, the main base station specifically selects an auxiliary base station in a heterogeneous base station scene according to network information of the mobile ad hoc network and a load state of a base station where an idle user terminal in the mobile ad hoc network is located;
and the auxiliary base station is used for selecting an idle user terminal from the mobile ad hoc network and the auxiliary base station as an auxiliary user terminal according to the network information of the mobile ad hoc network, the context and busy-idle state of other user terminals in the mobile ad hoc network where the main user terminal is located.
In one embodiment, the secondary base station is further configured to send a secondary RRC page to the secondary user terminal; according to an auxiliary RRC connection request sent by an auxiliary user terminal, sending an auxiliary RRC connection establishment message to the auxiliary user terminal; the main base station is also used for sending an auxiliary RRC connection establishment completion message sent by the auxiliary user terminal to the main base station;
the auxiliary user terminal is also used for sending an auxiliary RRC connection request to the auxiliary base station after receiving the auxiliary RRC paging; and sending an auxiliary RRC connection establishment completion message to the auxiliary base station according to the auxiliary RRC connection establishment message sent by the auxiliary base station.
In one embodiment, the master base station is further configured to send a master RRC page to the master user terminal when sending downlink data to the master user terminal; sending a main RRC connection establishment message to a main user terminal according to a main RRC connection request sent by the main user terminal;
the master user terminal is also used for sending a master RRC connection request to the master base station after receiving the master RRC paging; and after receiving an auxiliary RRC connection establishment completion message sent by the main base station, sending a main RRC connection establishment completion message to the main base station according to the main RRC connection establishment message, wherein the main RRC connection establishment completion message comprises a carrier aggregation service request.
In one embodiment, the master user terminal is further configured to send a master RRC connection request to the master base station when there is uplink data; after receiving the main RRC connection establishment message, sending a main RRC connection establishment completion message to the main base station;
the main base station sends a main RRC connection establishment message to the main user terminal according to the main RRC connection request; and after receiving the main RRC connection establishment completion message, executing the operation of selecting the auxiliary user terminal.
In an embodiment, the primary user terminal is further configured to, in a same-base-station scenario, include, in a primary RRC connection setup complete message sent to the primary base station, an aggregated carrier service request.
In an embodiment, the primary user terminal is further configured to send, in the case of the different base station, a carrier aggregation service request to the primary base station after receiving the secondary RRC connection setup complete message sent by the primary base station.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
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, and 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 these drawings without creative efforts.
Fig. 1 is a diagram illustrating a method for controlling carrier aggregation radio resources according to an embodiment of the present invention.
Fig. 2 is a diagram illustrating a method for controlling carrier aggregation radio resources according to another embodiment of the present invention.
Fig. 3 is a diagram illustrating a method for controlling carrier aggregation radio resources according to another embodiment of the present invention.
Fig. 4 is a diagram illustrating a method for controlling carrier aggregation radio resources according to another embodiment of the present invention.
Fig. 5 is a diagram illustrating a method for controlling carrier aggregation radio resources according to another embodiment of the present invention.
Fig. 6 is a diagram illustrating a carrier aggregation radio resource control system according to an embodiment of the present invention.
Fig. 7 is a diagram illustrating a carrier aggregation radio resource control system according to another 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a diagram illustrating a method for controlling carrier aggregation radio resources according to an embodiment of the present invention. Wherein:
And 102, selecting an idle terminal as an auxiliary user terminal in the mobile ad hoc network where the main user terminal is located by the main base station.
Under the scene of the same base station, the main base station selects an idle terminal as an auxiliary user terminal in the mobile ad hoc network where the main user terminal is located, and the method comprises the following steps:
the main base station selects an idle user terminal in the mobile ad hoc network as an auxiliary user terminal according to the network information of the mobile ad hoc network, the context and busy-idle state of other user terminals in the mobile ad hoc network where the main user terminal is located.
In addition, in a scene of a different base station, the main base station selects an idle terminal as an auxiliary user terminal in the mobile ad hoc network where the main user terminal is located, and the method comprises the following steps:
the main base station selects an auxiliary base station according to the network information of the mobile ad hoc network and the load state of the base station where the idle user terminal in the mobile ad hoc network is located. And the auxiliary base station selects an idle user terminal from the mobile ad hoc network and the auxiliary base station as an auxiliary user terminal according to the network information of the mobile ad hoc network, the context and busy-idle state of other user terminals in the mobile ad hoc network where the main user terminal is located.
In addition, the main base station may be responsible for selecting the secondary user terminal, and then notify the secondary base station of the selected secondary user terminal.
And 103, after the connection with the auxiliary user terminal is established, the main base station sends an auxiliary RRC connection establishment completion message to the main user terminal.
And step 104, after the main RRC connection is successfully established with the main user terminal, the main base station sends an initial UE message to the core network, wherein the initial UE message comprises a carrier aggregation service request sent by the main user terminal.
Based on the carrier aggregation radio resource control method provided by the embodiment of the invention, when the data stream needs to be transmitted between the main user terminal and the corresponding main base station, the main base station establishes main RRC connection with the main user terminal and also establishes connection with the selected auxiliary user terminal. By adopting the dual RRC connection method, the problem of complex and frequent interaction between base stations can be effectively solved when carrier aggregation is realized.
The invention is illustrated below by specific examples:
example 1: under the same base station scene, the core network has downlink data
When the core network has downlink data, the core network initiates a service request, as shown in fig. 2:
in step 201, the MME determines to enable the primary and secondary UE carrier aggregation mode for transmission, and sends S1AP paging to the base station according to the stored UE context.
In step 202, the base station sends a primary RRC page to the primary UE after receiving the S1AP page.
Step 203, the base station selects the auxiliary UE according to the MANET network information, the UE context and the busy/idle state of the UE.
Step 204, the base station sends an auxiliary RRC page to the auxiliary UE.
In step 205a, the auxiliary UE sends an auxiliary RRC connection request to the base station after receiving the auxiliary RRC page.
Step 205b, the master UE sends a master RRC connection request to the base station after receiving the master RRC page.
In step 206a, the base station sends an auxiliary RRC connection setup message to the auxiliary UE.
In step 206b, the base station sends a primary RRC connection setup message to the primary UE.
In step 207, the auxiliary UE sends an auxiliary RRC connection setup complete message to the base station after the auxiliary RRC connection setup is completed.
In step 208, the base station sends an auxiliary RRC connection setup complete message to the primary UE.
In step 209, the primary UE sends a primary RRC connection setup complete message to the base station only after receiving the secondary RRC connection setup complete message. Wherein the primary RRC connection setup complete message includes a carrier aggregation service request.
Step 211, an S1 interface connection is established between the base station and the MME.
In this embodiment, the base station notifies the primary and secondary UEs to receive the primary and secondary carrier aggregation transmission enabling notification in the system information through the primary and secondary RRC paging.
Example 2: under the same base station scene, the master user terminal has uplink data
When the UE has uplink data, the master UE initiates a service request, as shown in fig. 3. Wherein:
step 301, when the master UE has uplink data, the master UE sends a master RRC connection request to the base station.
Step 302, the base station sends a main RRC connection setup message to the main UE according to the main RRC connection request.
Step 303, the primary UE sends a primary RRC connection setup complete message to the base station, where a service request for enabling carrier aggregation of the primary and secondary UEs is attached.
And step 304, the base station selects the auxiliary UE according to the MANET network information, the UE context and the busy/idle state of the UE.
Step 305, the base station sends an auxiliary RRC page to the auxiliary UE.
Step 306, after receiving the auxiliary RRC page, the auxiliary UE sends an auxiliary RRC connection request to the base station.
Step 307, after receiving the auxiliary RRC connection request, the base station sends an auxiliary RRC connection setup message to the auxiliary UE.
Step 308, the auxiliary UE sends an auxiliary RRC connection setup complete message to the base station.
In step 309, the base station forwards the received auxiliary RRC connection setup complete message to the master UE.
Step 310, the base station sends an initial UE message to the MME, where the initial UE message includes a carrier aggregation service request sent by the primary UE.
Step 311, an S1 interface connection is established between the base station and the MME.
Example 3: under the scene of different base stations, the core network has downlink data
When the core network has downlink data, the core network initiates a service request. As shown in fig. 4, wherein:
in step 401, the MME determines to enable the primary and secondary UE carrier aggregation mode for transmission, and sends S1AP paging to the primary base station according to the stored UE context.
Step 402, after the S1AP page received by the master base station, sends a master RRC page to the master UE.
Step 403, the main base station selects a candidate base station according to the MANET network information and the load state of the base station where the node is located, and informs the candidate base station to further select the auxiliary UE.
In step 404, the candidate base station selects the auxiliary UE according to the MANET network information, the UE context and the busy/idle state of the UE.
Wherein, once the auxiliary UE meeting the conditions is selected, the candidate base station is the auxiliary base station.
Step 405, sending an auxiliary RRC page to the auxiliary UE by the auxiliary base station.
In step 406a, the master UE sends a master RRC connection request to the master base station.
In step 406b, the secondary UE sends a secondary RRC connection request to the secondary base station.
In step 407a, the master base station sends a master RRC connection setup message to the master UE.
Step 407b, the secondary base station sends a secondary RRC connection setup message to the secondary UE.
In step 408, the secondary UE first sends a secondary RRC connection setup complete message to the secondary base station.
In step 409, the secondary base station forwards the secondary RRC connection setup complete message to the primary base station.
In step 410, the primary base station sends a secondary RRC connection setup complete message to the primary UE.
In step 411, the master UE sends the master RRC connection setup complete message to the master base station only after receiving the secondary RRC connection setup complete message. Wherein the primary RRC connection setup complete message includes a carrier aggregation service request.
In step 412, the primary base station sends an initial UE message to the MME, where the initial UE message includes a carrier aggregation service request sent by the primary UE.
Step 413, establishing S1 interface connection between the primary base station and the MME, and between the secondary base station and the MME.
And then, corresponding main and auxiliary UE authentication can be carried out.
In this embodiment, the primary and secondary base stations may respectively notify the primary and secondary UEs to receive the primary and secondary carrier aggregation transmission start notification in the system information through corresponding primary and secondary RRC paging.
Example 4: under the scene of different base stations, the master user terminal has uplink data
When the UE has uplink data, the master UE initiates a service request, as shown in fig. 5. Wherein:
step 501, when the master UE has uplink data, the master UE sends a master RRC connection request to the master base station.
Step 502, the master base station sends a master RRC connection setup message to the master UE.
In step 503, the master UE sends a master RRC connection setup complete message to the master base station, with an auxiliary RRC connection request attached.
Step 504, the main base station selects a candidate base station according to the MANET network information and the load state of the base station where the node is located, and informs the candidate base station to further select the auxiliary UE.
And step 505, the candidate base station selects the auxiliary UE according to the MANET network information, the UE context and the busy/idle state of the UE.
Wherein, once the auxiliary UE meeting the conditions is selected, the candidate base station is the auxiliary base station.
Step 506, sending, by the secondary base station, a secondary RRC page to the secondary UE.
Step 507, the auxiliary UE sends an auxiliary RRC connection request to the auxiliary base station after receiving the auxiliary RRC paging.
In step 508, the secondary base station sends a secondary RRC connection setup message to the secondary UE.
In step 509, the secondary UE sends a secondary RRC connection setup complete message to the secondary base station.
Step 510, the secondary base station informs the primary base station of a secondary RRC connection setup complete message.
In step 511, the master base station notifies the master UE of the secondary RRC connection setup complete message.
In step 512, the primary UE sends a carrier aggregation service request message to the primary base station.
Step 513, the master base station sends an initial UE message to the MME, where the initial UE message includes a carrier aggregation service request sent by the master UE.
Step 514, establishing S1 interface connection between the main base station and the MME and between the auxiliary base station and the MME.
And then, corresponding main and auxiliary UE authentication can be carried out.
Fig. 6 is a diagram illustrating a carrier aggregation radio resource control system according to an embodiment of the present invention. As shown in fig. 6, the system includes a main base station 601, a main user terminal 602, and a secondary user terminal 603, wherein:
the master base station 601 is configured to establish a master RRC connection with the master user terminal 602 when a data stream needs to be transmitted between the master user terminal and the corresponding master user terminal 602; selecting an idle terminal as an auxiliary user terminal 603 in a mobile ad hoc network where a main user terminal is located; after establishing a connection with the secondary user terminal 603, a secondary RRC connection setup complete message is sent to the primary user terminal 602. After the primary RRC connection is successfully established with the primary user terminal 602, the primary base station 601 sends an initial UE message to the core network, where the initial UE message includes a carrier aggregation service request sent by the primary user terminal.
The primary user terminal 602 is used to establish a primary RRC connection with the primary base station 601.
The secondary user terminal 603 is used to establish a connection with the primary base station 601.
Based on the carrier aggregation radio resource control system provided by the embodiment of the invention, when data streams need to be transmitted between the main user terminal and the corresponding main base station, the main base station establishes main RRC connection with the main user terminal and simultaneously establishes connection with the selected auxiliary user terminal. By adopting the dual RRC connection method, the problem of complex and frequent interaction between base stations can be effectively solved when carrier aggregation is realized.
Optionally, the main base station 601 specifically selects an idle ue in the ad hoc network as the auxiliary ue 603 according to the network information of the ad hoc network, the context and busy/idle state of other ues in the ad hoc network where the main user terminal 602 is located.
The primary base station 601 is further configured to send an auxiliary RRC page to the auxiliary user terminal 603 when establishing a connection with the auxiliary user terminal 603; and sending an auxiliary RRC connection setup message to the auxiliary user terminal 603 according to the auxiliary RRC connection request sent by the auxiliary user terminal 603.
The auxiliary user terminal 603 is further configured to send an auxiliary RRC connection request to the main base station 601 after receiving the auxiliary RRC paging; according to the auxiliary RRC connection setup message sent by the main base station 601, an auxiliary RRC connection setup complete message is sent to the main base station 601.
Fig. 7 is a diagram illustrating a carrier aggregation radio resource control system according to another embodiment of the present invention. Specifically, in the scenario of a different base station, the master base station 601 selects one of the auxiliary base stations 604 according to network information of the mobile ad hoc network and a load state of a base station where the idle user terminal 602 in the mobile ad hoc network is located.
The secondary base station 604 is configured to select an idle ue from the mobile ad hoc network and the secondary base station as the secondary ue 603 according to the network information of the mobile ad hoc network, the context and busy/idle state of other ues in the mobile ad hoc network where the primary user terminal is located.
Wherein, when the main base station 601 establishes connection with the auxiliary user terminal 603, the auxiliary base station 604 is further configured to send an auxiliary RRC page to the auxiliary user terminal 603; sending an auxiliary RRC connection setup message to the auxiliary user terminal 603 according to the auxiliary RRC connection request sent by the auxiliary user terminal 603; and is further configured to send a secondary RRC connection setup complete message sent by the secondary user terminal to the primary base station 601.
The secondary user terminal 603 is further configured to send a secondary RRC connection request to the secondary base station 604 after receiving the secondary RRC page; and sending an auxiliary RRC connection setup complete message to the auxiliary base station 604 according to the auxiliary RRC connection setup message sent by the auxiliary base station 604.
In the embodiment shown in fig. 6 or fig. 7, the primary base station 601 is further configured to send a primary RRC page to the primary user terminal 602 when sending downlink data to the primary user terminal 602; and sending a main RRC connection establishment message to the main user terminal 602 according to the main RRC connection request sent by the main user terminal 602.
The master user terminal 602 is further configured to send a master RRC connection request to the master base station 601 after receiving the master RRC page; after receiving the auxiliary RRC connection setup complete message sent by the main base station 601, sending a main RRC connection setup complete message to the main base station 601 according to the main RRC connection setup message, where the main RRC connection setup complete message includes a carrier aggregation service request.
Optionally, the primary user terminal 602 is further configured to send a primary RRC connection request to the primary base station 601 when there is uplink data; upon receiving the primary RRC connection setup message, a primary RRC connection setup complete message is sent to the primary base station 601.
The main base station 601 sends a main RRC connection establishment message to the main user terminal 602 according to the main RRC connection request; and after receiving the main RRC connection establishment completion message, executing the operation of selecting the auxiliary user terminal.
Optionally, in the same base station scenario, the primary RRC connection setup complete message sent by the primary user terminal 602 to the primary base station 601 includes an aggregated carrier service request. Or, in the case of a different base station, the primary user terminal 602 is further configured to send a carrier aggregation service request to the primary base station 601 after receiving the secondary RRC connection setup complete message sent by the primary base station 601.
By implementing the invention, the following beneficial effects can be obtained:
establishment of primary-secondary RRC connection supporting primary-secondary UE carrier aggregation.
Without increasing the complexity of the UE.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (18)
1. A method for controlling carrier aggregation radio resources, comprising:
when a main user terminal and a corresponding main base station need to transmit data streams, the main base station establishes main RRC connection with the main user terminal;
the main base station selects an idle terminal as an auxiliary user terminal in a mobile ad hoc network where the main user terminal is located;
after establishing the auxiliary RRC connection with the auxiliary user terminal, the main base station sends an auxiliary RRC connection establishment completion message to the main user terminal;
after the main base station successfully establishes main RRC connection with the main user terminal and successfully establishes auxiliary RRC connection with the auxiliary user terminal, the main base station sends an initial UE message to a core network, wherein the initial UE message comprises a carrier aggregation service request sent to the main base station by the main user terminal.
2. The method of claim 1, further comprising:
under the scene of the same base station, the main base station selects an idle terminal as an auxiliary user terminal in a mobile ad hoc network where the main user terminal is located, and the method comprises the following steps:
the main base station selects an idle user terminal in the mobile ad hoc network as an auxiliary user terminal according to the network information of the mobile ad hoc network, the context and busy-idle state of other user terminals in the mobile ad hoc network where the main user terminal is located.
3. The method of claim 2, further comprising:
the main base station and the auxiliary user terminal establish the auxiliary RRC connection comprises the following steps:
the main base station sends an auxiliary RRC paging to the auxiliary user terminal;
the auxiliary user terminal sends an auxiliary RRC connection request to the main base station after receiving the auxiliary RRC paging;
the main base station sends an auxiliary RRC connection establishment message to the auxiliary user terminal according to the auxiliary RRC connection request;
and the auxiliary user terminal sends an auxiliary RRC connection establishment completion message to the main base station according to the auxiliary RRC connection establishment message.
4. The method of claim 1, further comprising:
in a scene of a different base station, the main base station selects an idle terminal as an auxiliary user terminal in a mobile ad hoc network where a main user terminal is located, and the method comprises the following steps:
the main base station selects an auxiliary base station according to the network information of the mobile ad hoc network and the load state of the base station where the idle user terminal in the mobile ad hoc network is located;
and the auxiliary base station selects an idle user terminal from the mobile ad hoc network and the auxiliary base station as an auxiliary user terminal according to the network information of the mobile ad hoc network, the context and busy-idle state of other user terminals in the mobile ad hoc network where the main user terminal is located.
5. The method of claim 4, further comprising:
the main base station and the auxiliary user terminal establish the auxiliary RRC connection comprises the following steps:
the auxiliary base station sends an auxiliary RRC paging to the auxiliary user terminal;
the auxiliary user terminal sends an auxiliary RRC connection request to the auxiliary base station after receiving the auxiliary RRC paging;
the auxiliary base station sends an auxiliary RRC connection establishment message to the auxiliary user terminal according to the auxiliary RRC connection request;
the auxiliary user terminal sends an auxiliary RRC connection establishment completion message to the auxiliary base station according to the auxiliary RRC connection establishment message;
and the auxiliary base station sends an auxiliary RRC connection establishment completion message to the main base station.
6. The method according to any one of claims 2-5, further comprising:
when the main base station sends downlink data to the main user terminal, the main base station and the main user terminal establish main RRC connection, which comprises the following steps:
the main base station sends main RRC paging to a main user terminal;
the master user terminal sends a master RRC connection request to the master base station after receiving the master RRC paging;
the main base station sends a main RRC connection establishment message to the main user terminal according to the main RRC connection request;
and after receiving an auxiliary RRC connection establishment completion message sent by the main base station, the main user terminal sends a main RRC connection establishment completion message to the main base station according to the main RRC connection establishment message, wherein the main RRC connection establishment completion message comprises a carrier aggregation service request.
7. The method according to any one of claims 2-5, further comprising:
when the main user terminal has uplink data, the establishing of the main RRC connection between the main base station and the main user terminal comprises the following steps:
a master user terminal sends a master RRC connection request to a master base station;
the main base station sends a main RRC connection establishment message to the main user terminal according to the main RRC connection request;
the master user terminal sends a master RRC connection establishment completion message to the master base station after receiving the master RRC connection establishment message;
and the main base station executes the step of selecting the auxiliary user terminal after receiving the main RRC connection establishment completion message.
8. The method of claim 7, further comprising:
in the same base station scene, a main RRC connection establishment completion message sent by a main user terminal to a main base station comprises an aggregation carrier service request.
9. The method of claim 7, further comprising:
under the condition of the different base stations, the main user terminal sends a carrier aggregation service request to the main base station after receiving an auxiliary RRC connection establishment completion message sent by the main base station.
10. A carrier aggregation radio resource control system, comprising:
the main base station is used for establishing main RRC connection with the main user terminal when data flow needs to be transmitted between the main base station and the corresponding main user terminal; selecting an idle terminal as an auxiliary user terminal in a mobile ad hoc network where a main user terminal is located; after establishing the auxiliary RRC connection with the auxiliary user terminal, sending an auxiliary RRC connection establishment completion message to the main user terminal; after a main RRC connection is successfully established with a main user terminal and an auxiliary RRC connection is successfully established with an auxiliary user terminal respectively, an initial UE message is sent to a core network, wherein the initial UE message comprises a carrier aggregation service request sent to a main base station by the main user terminal;
the master user terminal is used for establishing master RRC connection with the master base station;
and the auxiliary user terminal is used for establishing auxiliary RRC connection with the main base station.
11. The system of claim 10,
specifically, under the scene of the same base station, the main base station selects an idle user terminal in the mobile ad hoc network as an auxiliary user terminal according to the network information of the mobile ad hoc network, the context and busy/idle state of other user terminals in the mobile ad hoc network where the main user terminal is located.
12. The system of claim 11,
the main base station is also used for sending an auxiliary RRC paging to the auxiliary user terminal when the auxiliary RRC connection is established with the auxiliary user terminal; according to an auxiliary RRC connection request sent by an auxiliary user terminal, sending an auxiliary RRC connection establishment message to the auxiliary user terminal;
the auxiliary user terminal is also used for sending an auxiliary RRC connection request to the main base station after receiving the auxiliary RRC paging; and sending an auxiliary RRC connection establishment completion message to the main base station according to the auxiliary RRC connection establishment message sent by the main base station.
13. The system of claim 10, further comprising:
specifically, under the scene of a different base station, the main base station selects an auxiliary base station according to the network information of the mobile ad hoc network and the load state of the base station where the idle user terminal is located in the mobile ad hoc network;
and the auxiliary base station is used for selecting an idle user terminal from the mobile ad hoc network and the auxiliary base station as an auxiliary user terminal according to the network information of the mobile ad hoc network, the context and busy-idle state of other user terminals in the mobile ad hoc network where the main user terminal is located.
14. The system of claim 13, further comprising:
the auxiliary base station is also used for sending an auxiliary RRC paging to the auxiliary user terminal; according to an auxiliary RRC connection request sent by an auxiliary user terminal, sending an auxiliary RRC connection establishment message to the auxiliary user terminal; the main base station is also used for sending an auxiliary RRC connection establishment completion message sent by the auxiliary user terminal to the main base station;
the auxiliary user terminal is also used for sending an auxiliary RRC connection request to the auxiliary base station after receiving the auxiliary RRC paging; and sending an auxiliary RRC connection establishment completion message to the auxiliary base station according to the auxiliary RRC connection establishment message sent by the auxiliary base station.
15. The system according to any one of claims 11-14,
the main base station is also used for sending main RRC paging to the main user terminal when sending downlink data to the main user terminal; sending a main RRC connection establishment message to a main user terminal according to a main RRC connection request sent by the main user terminal;
the master user terminal is also used for sending a master RRC connection request to the master base station after receiving the master RRC paging; and after receiving an auxiliary RRC connection establishment completion message sent by the main base station, sending a main RRC connection establishment completion message to the main base station according to the main RRC connection establishment message, wherein the main RRC connection establishment completion message comprises a carrier aggregation service request.
16. The system according to any one of claims 10-14,
the master user terminal is also used for sending a master RRC connection request to the master base station when uplink data exist; after receiving the main RRC connection establishment message, sending a main RRC connection establishment completion message to the main base station;
the main base station sends a main RRC connection establishment message to the main user terminal according to the main RRC connection request; and after receiving the main RRC connection establishment completion message, executing the operation of selecting the auxiliary user terminal.
17. The system of claim 16,
the main user terminal is also used for sending a main RRC connection establishment completion message to the main base station under the scene of the same base station, wherein the main RRC connection establishment completion message comprises an aggregation carrier service request.
18. The system of claim 16,
and the main user terminal is also used for sending a carrier aggregation service request to the main base station after receiving the auxiliary RRC connection establishment completion message sent by the main base station under the condition of the different base stations.
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