CN107182132B - SRB establishing method, device and system based on double connections - Google Patents
SRB establishing method, device and system based on double connections Download PDFInfo
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Abstract
When the auxiliary node has signaling to send, the method, the device and the system for establishing the SRB based on the dual connection send an SCG SRB establishment request to the main node, the main node detects the current service and the number of the auxiliary nodes connected at present, when the auxiliary nodes connected with the main node reach a first threshold value and the average value of the channel quality of the SCG reaches a second threshold value, the MCG SRB is wirelessly born by only adopting the signaling of the main cell to sharply increase the signaling overhead, and the establishment of the SCG SRB can ensure the reliable transmission of the signaling; when the main node detects that the current service type is the low-delay high-reliability URLLC, in order to support the service scheduling requirement of the URLLC, the SCG SRB is established to reduce the delay of transmission and switching processing and reduce the signaling transmission time.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for establishing an SRB based on dual connectivity.
Background
With the growing demand of users and the development of communication technology, more and more technologies and related networks are emerging in the field of wireless communication: 2G networks, 3G networks, 4G networks and 5G networks. Among them, the 4G technology, LTE, has become one of the fastest wireless communication technologies in global development due to its various technological advantages, such as high speed and low time delay. However, the explosive data volume and the diversified user requirements also bring challenges to LTE, and the emergence of the 5G system is intended to meet various new services and higher performance requirements, so that it will penetrate into various fields of future society, and construct an all-round information ecosystem with users as the center. The 5G can provide the user with the optical fiber-like access rate, the use experience of zero time delay, the connection capability of billions of devices, the consistent service of multiple scenes such as ultrahigh flow density, ultrahigh connection number density, ultrahigh mobility and the like, and can bring the improvement of the energy efficiency and the reduction of the bit cost to a large extent for the network.
In a future 5G system, no matter an independent networking or hybrid networking mode is adopted, for various application scenarios, a dual-connection technology between LTE and the 5G system can be used, and the dual-connection technology is one of key technologies in 5G network construction. At present, there are multiple dual connectivity technologies, and different dual connectivity technologies correspond to different user plane and control plane protocols. However, no matter what kind of existing dual connectivity technology is that signaling transmission is directly performed between the primary node and the secondary node, when the number of secondary nodes supporting low-latency high-reliability communication service URLLC or primary node connection is increased, the problem of signaling transmission time extension is inevitably caused.
Disclosure of Invention
In view of this, the present invention provides a method, an apparatus, and a system for establishing an SRB based on dual connectivity, which reduce signaling transmission time and ensure reliable signaling transmission.
In order to achieve the above purpose, the invention provides the following specific technical scheme:
a double connection-based SCG SRB establishment method is applied to a main node, and comprises the following steps:
receiving an auxiliary cell group signaling radio bearer (SCG SRB) establishment request sent by an auxiliary node, wherein the SCGSRB establishment request carries Signaling Radio Bearer (SRB) identification and a channel quality average value of an auxiliary cell group (SCG);
detecting the current service type and the number of the auxiliary nodes connected currently;
and judging whether to establish the SCG SRB or not based on a preset rule according to the average value of the channel quality of the SCG, the current service type and the number of the auxiliary nodes connected currently.
Preferably, the determining, based on a preset rule, whether to establish an SCG SRB according to the average value of the channel quality of the SCG, the current service type, and the number of currently connected auxiliary nodes includes:
judging whether the current service type is a low-delay high-reliability communication URLLC;
if so, establishing an SCG SRB;
if not, judging whether the number of the auxiliary nodes connected currently is smaller than a first threshold value;
if the value is less than the first threshold value, the SCG SRB is refused to be established;
if not, judging whether the average value of the channel quality of the SCG is smaller than a second threshold value;
if the value is less than the second threshold value, the SCG SRB is refused to be established;
and if the SCG SRB is not smaller than the second threshold, establishing the SCG SRB.
Preferably, the primary node is a 5G base station or an LTE base station, and the secondary node is a 5G base station or an LTE base station.
Preferably, the method further comprises:
and after the SCG SRB is established, sending response information of the SCG SRB establishment to the auxiliary node sending the SCG SRB establishment request, or after the SCG SRB establishment is refused, sending response information of refusing to establish the SCG SRB to the auxiliary node sending the SCG SRB establishment request.
A dual connectivity-based SCG SRB establishment apparatus applied to a master node, the apparatus comprising:
a first receiving unit, configured to receive an auxiliary cell group signaling radio bearer SCG SRB establishment request sent by an auxiliary node, where the SCG SRB establishment request carries a signaling radio bearer SRB identifier and a channel quality average of an auxiliary cell group SCG;
the detection unit is used for detecting the current service type and the number of the auxiliary nodes connected currently;
and the judging unit is used for judging whether to establish the SCG SRB or not based on a preset rule according to the average value of the channel quality of the SCG, the current service type and the number of the auxiliary nodes connected currently.
Preferably, the judging unit includes:
the first judging subunit is used for judging whether the current service type is a low-delay high-reliability URLLC communication, if so, the establishing subunit is triggered, and if not, the second judging subunit is triggered;
the establishing subunit is used for establishing an SCG SRB;
the second judging subunit is configured to judge whether the number of currently connected auxiliary nodes is smaller than a first threshold, refuse to establish an SCG SRB if the number of currently connected auxiliary nodes is smaller than the first threshold, and trigger a third judging subunit if the number of currently connected auxiliary nodes is not smaller than the first threshold;
the third determining subunit is configured to determine whether the average value of the channel quality of the SCG is smaller than a second threshold, reject to establish the SCG SRB if the average value of the channel quality of the SCG is smaller than the second threshold, and trigger the establishing subunit if the average value of the channel quality of the SCG is not smaller than the second threshold.
Preferably, the apparatus further comprises:
and the response unit is used for sending the response information that the SCG SRB is established to the auxiliary node sending the SCG SRB establishment request after the SCG SRB is established, or sending the response information that the SCG SRB is refused to be established to the auxiliary node sending the SCG SRB establishment request after the SCG SRB is refused to be established.
A dual connection-based SCG SRB establishment method is applied to an auxiliary node, and comprises the following steps:
when a signaling needs to be sent, sending an SCG SRB establishment request to a main node, wherein the SCG SRB establishment request carries an SRB identifier and an SCG channel quality average value;
and receiving response information which is sent by the master node and is established by the SCG SRB or refusing to establish the SCG SRB.
A dual connectivity-based SCG SRB establishment apparatus applied to a secondary node, the apparatus comprising:
a sending unit, configured to send an SCG SRB establishment request to a master node when a signaling needs to be sent, where the SCGSRB establishment request carries an SRB identifier and an SCG channel quality average;
and the second receiving unit is used for receiving the response information which is sent by the main node and is established by the SCG SRB or refusing to establish the SCGSRB.
A dual-connection-based SCG SRB establishment system comprises a main node and a plurality of auxiliary nodes, wherein the main node comprises the dual-connection-based SCG SRB establishment device, and the auxiliary nodes comprise the dual-connection-based SCG SRB establishment device.
Compared with the prior art, the invention has the following beneficial effects:
when the auxiliary node has signaling to send, the method and the system send SCG SRB establishment requests to the main node, the main node detects the current service and the number of the auxiliary nodes connected at present, when the auxiliary nodes connected with the main node reach a first threshold value and the average value of the channel quality of SCG reaches a second threshold value, the signaling cost is increased sharply only by adopting the main cell signaling radio bearer MCG SRB, and the establishment of the SCG SRB can ensure the reliable transmission of the signaling; when the main node detects that the current service type is the low-delay high-reliability URLLC, in order to support the service scheduling requirement of the URLLC, the SCG SRB is established to reduce the delay of transmission and switching processing and reduce the signaling transmission time.
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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a method for establishing a dual connectivity-based SCG SRB applied to a master node according to an embodiment of the present invention;
fig. 2 is a flowchart of another double-connection-based SCGSRB establishment method applied to a master node according to an embodiment of the present invention;
fig. 3 is a flowchart of another dual-connection-based SCGSRB establishment method applied to a master node according to an embodiment of the present invention;
fig. 4 is a flowchart of another dual-connection-based SCGSRB establishment method applied to a master node according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a dual connection-based SCG SRB establishment apparatus applied to a master node according to an embodiment of the present invention;
FIG. 6 is a flowchart of a method for establishing a dual connectivity-based SCG SRB for an auxiliary node according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a dual connectivity-based SCG SRB establishment apparatus applied to an auxiliary node 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.
Referring to fig. 1, the present embodiment discloses a method for establishing an SCG SRB based on dual connectivity, which is applied to a master node, and the method includes:
s101: receiving an auxiliary cell group signaling radio bearer (SCG SRB) establishment request sent by an auxiliary node, wherein the SCG SRB establishment request carries Signaling Radio Bearer (SRB) identification and a channel quality average value of an auxiliary cell group (SCG);
it should be noted that the primary node is a 5G base station or an LTE base station, and the secondary node is a 5G base station or an LTE base station. That is, the present embodiment includes the following forms:
the main node is a 5G base station, and the auxiliary node is a 5G base station;
the main node is a 5G base station, and the auxiliary node is an LTE base station;
the main node is an LTE base station, and the auxiliary node is a 5G base station;
the primary node is an LTE base station, and the secondary node is the LTE base station.
In the invention, the auxiliary nodes are equal to auxiliary cell groups, each auxiliary cell group comprises a plurality of auxiliary cells, and the average value of the channel quality of the SCG of the auxiliary cell group is the average value of the channel quality of each auxiliary cell in the auxiliary cell group.
S102: detecting the current service type and the number of the auxiliary nodes connected currently;
s103: and judging whether to establish the SCG SRB or not based on a preset rule according to the average value of the channel quality of the SCG, the current service type and the number of the auxiliary nodes connected currently.
Preferably, referring to fig. 2, the specific implementation process of S103 is as follows:
s201: judging whether the current service type is a low-delay high-reliability communication URLLC, if so, executing S202, and if not, executing S203;
s202: establishing an SCG SRB;
s203: judging whether the number of the currently connected auxiliary nodes is smaller than a first threshold value, if so, executing S204, and if not, executing S204;
s204: refusing to establish SCG SRB;
s205: and judging whether the average value of the channel quality of the SCG is smaller than a second threshold value, if so, executing S204, and if not, executing S202.
Optionally, referring to fig. 3, the specific implementation process of S103 is as follows:
s301: judging whether the number of the currently connected auxiliary nodes is smaller than a first threshold value, if so, executing S302, and if not, executing S303;
s302: refusing to establish SCG SRB;
s303: and judging whether the average value of the channel quality of the SCG is smaller than a second threshold value, if so, executing S304, and if not, executing S305.
S304: judging whether the current service type is a low-delay high-reliability communication URLLC, if so, executing S305, and if not, executing S302;
s305: SCG SRB is established.
It should be further noted that, referring to fig. 4, after S103, the method further includes:
s104: and after the SCG SRB is established, sending response information that the SCG SRB is established to the auxiliary node sending the SCG SRB establishment request, or after the SCG SRB is refused to be established, sending response information refusing to establish the SCG SRB to the auxiliary node sending the SCG SRB establishment request.
In the method for establishing an SRB based on dual connectivity provided in this embodiment, when a master node receives an SCG SRB establishment request of an auxiliary cell group signaling radio bearer sent by an auxiliary node, the master node detects the current service and the number of the currently connected auxiliary nodes, and when the auxiliary node connected to the master node reaches a first threshold and an average value of channel quality of an SCG reaches a second threshold, signaling overhead is increased sharply by using only a master cell signaling radio bearer MCG SRB, and at this time, establishing the SCG SRB can ensure reliable transmission of signaling; when the main node detects that the current service type is the low-delay high-reliability URLLC, in order to support the service scheduling requirement of the URLLC, the SCG SRB is established to reduce the delay of transmission and switching processing and reduce the signaling transmission time. Experiments prove that the main node and the auxiliary node directly transmit back nonideal, and after the SCG SRB is established, the delay of new transmission can be reduced by tens of milliseconds or even hundreds of milliseconds.
Referring to fig. 5, the embodiment correspondingly discloses a dual-connection based SCG SRB establishment apparatus, which mainly includes:
a first receiving unit 101, configured to receive an secondary cell group signaling radio bearer SCGSRB establishment request sent by a secondary node, where the SCG SRB establishment request carries a signaling radio bearer SRB identifier and a channel quality average of a secondary cell group SCG;
a detecting unit 102, configured to detect a current service type and a number of currently connected auxiliary nodes;
a determining unit 103, configured to determine whether to establish an SCG SRB based on a preset rule according to the average value of the channel quality of the SCG, the current service type, and the number of currently connected auxiliary nodes.
Preferably, the judging unit 103 includes:
the first judging subunit is used for judging whether the current service type is a low-delay high-reliability URLLC communication, if so, the establishing subunit is triggered, and if not, the second judging subunit is triggered;
the establishing subunit is used for establishing an SCG SRB;
the second judging subunit is configured to judge whether the number of currently connected auxiliary nodes is smaller than a first threshold, refuse to establish an SCG SRB if the number of currently connected auxiliary nodes is smaller than the first threshold, and trigger a third judging subunit if the number of currently connected auxiliary nodes is not smaller than the first threshold;
the third determining subunit is configured to determine whether the average value of the channel quality of the SCG is smaller than a second threshold, reject to establish the SCG SRB if the average value of the channel quality of the SCG is smaller than the second threshold, and trigger the establishing subunit if the average value of the channel quality of the SCG is not smaller than the second threshold.
It should be noted that the apparatus for establishing SCG SRB based on dual connectivity further includes:
and the response unit is used for sending the response information that the SCG SRB is established to the auxiliary node sending the SCG SRB establishment request after the SCG SRB is established, or sending the response information that the SCG SRB is refused to be established to the auxiliary node sending the SCG SRB establishment request after the SCG SRB is refused to be established.
Referring to fig. 6, the present embodiment discloses a method for establishing an SCG SRB based on dual connectivity, which is applied to an auxiliary node, and the method includes:
s401: when a signaling needs to be sent, sending an SCG SRB establishment request to a main node, wherein the SCG SRB establishment request carries an SRB identifier and an SCG channel quality average value;
s402: and receiving response information which is sent by the main node and is established by the SCG SRB or refusing to establish the SCG SRB.
Referring to fig. 7, the embodiment correspondingly discloses a dual connectivity-based SCG SRB establishment apparatus, including:
a sending unit 201, configured to send an SCG SRB establishment request to a host node when a signaling needs to be sent, where the SCG SRB establishment request carries an SRB identifier and an SCG channel quality average value;
a second receiving unit 202, configured to receive response information that the SCG SRB is already established or response information that the SCG SRB is rejected to be established, where the response information is sent by the master node.
Based on all the above embodiments, this embodiment discloses a system for establishing SCG SRB based on dual connectivity, which includes: the master node comprises the device for establishing the SCG SRB based on the double connection disclosed by the embodiment, and the auxiliary node comprises the device for establishing the SCG SRB based on the double connection disclosed by the embodiment.
When any one auxiliary node needs to send a signaling, sending an SCG SRB establishment request to a main node, wherein the SCG SRB establishment request carries an SRB identification and a channel quality average value of SCG;
the main node receives an auxiliary cell group signaling radio bearer SCG SRB establishment request sent by an auxiliary node, detects the current service type and the number of the currently connected auxiliary nodes, judges whether to establish the SCG SRB or not based on a preset rule according to the channel quality average value of the SCG, the current service type and the number of the currently connected auxiliary nodes, and sends response information of the SCG SRB establishment to the auxiliary node sending the SCG SRB establishment request after the SCG SRB is established, or sends response information of refusing to establish the SCG SRB to the auxiliary node sending the SCG SRB establishment request after the SCG SRB is refused to be established.
In the SRB establishment system based on dual connectivity provided in this embodiment, when the secondary node has signaling to send, it sends an SCG SRB establishment request to the primary node, the primary node detects the current service and the number of the secondary nodes currently connected, and when the secondary nodes connected to the primary node reach the first threshold and the average value of the channel quality of the SCG reaches the second threshold, the signaling overhead will be increased sharply by only using the primary cell signaling radio bearer MCG SRB, and at this time, establishing the SCG SRB can ensure reliable transmission of the signaling; when the main node detects that the current service type is the low-delay high-reliability URLLC, in order to support the service scheduling requirement of the URLLC, the SCG SRB is established to reduce the delay of transmission and switching processing and reduce the signaling transmission time.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A method for establishing a dual connection-based SCG SRB is applied to a main node, and comprises the following steps:
receiving an auxiliary cell group signaling radio bearer (SCG SRB) establishment request sent by an auxiliary node, wherein the SCG SRB establishment request carries Signaling Radio Bearer (SRB) identification and a channel quality average value of an auxiliary cell group (SCG);
detecting the current service type and the number of the auxiliary nodes connected currently;
judging whether the current service type is a low-delay high-reliability communication URLLC;
if so, establishing an SCG SRB;
if not, judging whether the number of the auxiliary nodes connected currently is smaller than a first threshold value;
if the value is less than the first threshold value, the SCG SRB is refused to be established;
if not, judging whether the average value of the channel quality of the SCG is smaller than a second threshold value;
if the value is less than the second threshold value, the SCG SRB is refused to be established;
and if the SCG SRB is not smaller than the second threshold, establishing the SCG SRB.
2. The method of claim 1, wherein the primary node is a 5G base station or an LTE base station, and wherein the secondary node is a 5G base station or an LTE base station.
3. The method of claim 1, further comprising:
and after the SCG SRB is established, sending response information of the SCG SRB establishment to the auxiliary node sending the SCG SRB establishment request, or after the SCG SRB establishment is refused, sending response information of refusing to establish the SCG SRB to the auxiliary node sending the SCG SRB establishment request.
4. An apparatus for establishing a dual connectivity-based SCG SRB, the apparatus being applied to a master node, the apparatus comprising:
a first receiving unit, configured to receive an auxiliary cell group signaling radio bearer SCG SRB establishment request sent by an auxiliary node, where the SCG SRB establishment request carries a signaling radio bearer SRB identifier and a channel quality average of an auxiliary cell group SCG;
the detection unit is used for detecting the current service type and the number of the auxiliary nodes connected currently;
the judging unit is used for judging whether the current service type is a low-delay high-reliability communication URLLC; if so, establishing an SCG SRB; if not, judging whether the number of the auxiliary nodes connected currently is smaller than a first threshold value; if the value is less than the first threshold value, the SCG SRB is refused to be established; if not, judging whether the average value of the channel quality of the SCG is smaller than a second threshold value; if the value is less than the second threshold value, the SCG SRB is refused to be established; and if the value is not less than the second threshold value, establishing the SCGSRB.
5. The apparatus of claim 4, further comprising:
and the response unit is used for sending the response information that the SCG SRB is established to the auxiliary node sending the SCG SRB establishment request after the SCG SRB is established, or sending the response information that the SCG SRB establishment is refused to the auxiliary node sending the SCG SRB establishment request after the SCG SRB is refused to be established.
6. A method for establishing a dual connectivity-based SCG SRB is applied to an auxiliary node, and comprises the following steps:
when a signaling needs to be sent, sending an SCG SRB establishment request to a main node, wherein the SCG SRB establishment request carries an SRB identifier and an SCG channel quality average value;
receiving response information which is sent by a main node according to the SCG SRB establishment method based on the dual connectivity in any claim 1-3 and is established or refuses to establish the SCG SRB.
7. An apparatus for dual connectivity based SCG SRB establishment, applied to a secondary node, the apparatus comprising:
a sending unit, configured to send an SCG SRB establishment request to a master node when a signaling needs to be sent, where the SCG SRB establishment request carries an SRB identifier and an SCG channel quality average;
a second receiving unit, configured to receive response information that the master node has sent the SCG SRB establishment method based on dual connectivity according to any one of claims 1 to 3, or response information that the master node refuses to establish the SCG SRB.
8. A dual connectivity based SCG SRB establishment system, comprising: a primary node comprising the dual connectivity-based SCG SRB establishment apparatus of any of claims 4 to 5, and a plurality of secondary nodes comprising the dual connectivity-based SCG SRB establishment apparatus of claim 7.
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| US11546968B2 (en) | 2019-08-15 | 2023-01-03 | Apple Inc. | Traffic-rate based branch deactivation for UE power efficiency in a dual-connectivity mode |
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Address after: 430205 Hubei city of Wuhan province Jiangxia Hidden Dragon Island Tan lake two Road No. 1 Patentee after: CITIC Mobile Communication Technology Co., Ltd Address before: 430205, No. 88, postal academy road, Hongshan District, Hubei, Wuhan Patentee before: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. |
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Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: CITIC Mobile Communication Technology Co., Ltd |
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