CN111278019A

CN111278019A - Network access method, device, storage medium and network equipment

Info

Publication number: CN111278019A
Application number: CN202010071655.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Cloudminds Shenzhen Robotics Systems Co Ltd
Current assignee: Cloudminds Robotics Co Ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-06-12
Anticipated expiration: 2040-01-21
Also published as: CN111278019B

Abstract

The present disclosure relates to a method, an apparatus, a storage medium and a network device for network access, wherein the method is applied to a first network device of a first network, and comprises: receiving a service connection request sent by a target terminal; determining whether a second network device of a second network allows access to the target terminal; if the second network equipment allows to access the target terminal, sending a first access request message to the second network equipment according to the service connection request; and receiving a first access confirmation message sent by the second network equipment, and sending first resource configuration information to the target terminal according to the first access confirmation message so that the target terminal accesses the second network equipment according to the first resource configuration information. In this way, after receiving the service connection request sent by the target terminal, the first network device can switch the target terminal to the second network device, and provide service for the target terminal through the second network device, thereby implementing the co-construction and sharing of the network.

Description

Network access method, device, storage medium and network equipment

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, a storage medium, and a network device for network access.

Background

With the rapid development of user requirements and communication technologies, 5G (the 5th Generation mobile communication technology, fifth Generation mobile communication) networks have come, and in order to save the construction cost of the 5G networks, some operators adopt a network co-construction and sharing mode to construct the 5G networks.

To simplify the configuration and complexity of the network, a shared network may be constructed by one operator and shared for use by users of another operator. However, the protocol flow and the using method related to the shared network are not defined in the related art.

Disclosure of Invention

In order to solve the above problem, the present disclosure provides a method, an apparatus, a storage medium, and a network device for network access.

In a first aspect, the present disclosure provides a method for network access, which is applied to a first network device of a first network, and the method includes: receiving a service connection request sent by a target terminal; determining whether a second network device of a second network allows access to the target terminal; if the second network device allows to access the target terminal, sending a first access request message to the second network device according to the service connection request, wherein the first access request message is used for requesting the second network device to access the target terminal; receiving a first access confirmation message sent by the second network equipment; and sending first resource configuration information to the target terminal according to the first access confirmation message so that the target terminal can access the second network equipment according to the first resource configuration information.

Optionally, the determining whether a second network device of a second network allows access to the target terminal includes: acquiring capability indication information of the target terminal; acquiring network state information of the second network equipment; and determining whether the second network equipment is allowed to access the target terminal or not according to the capability indication information and the network state information of the second network equipment.

Optionally, the acquiring the network state information of the second network device includes: sending first measurement configuration information to the target terminal, wherein the first measurement configuration information is used for acquiring network state information of the second network equipment; and receiving the network state information of the second network equipment, which is acquired by the target terminal according to the first measurement configuration information.

Optionally, the capability indication information includes a frequency band combination of dual connectivity supported by the target terminal; the determining whether the second network device is allowed to access the target terminal according to the capability indication information and the network state information of the second network device includes: acquiring a frequency band combination of double connection supported by the second network equipment; if the frequency band combination of the dual connection supported by the target terminal comprises the frequency band combination of the dual connection supported by the second network equipment, determining that the second network equipment has dual connection capability supporting the target terminal; determining whether the network state information of the second network equipment meets a preset network state condition; and if the network state information of the second network equipment meets the preset network state condition, determining that the second network equipment is allowed to access the target terminal.

Optionally, the network status information of the second network device comprises at least one of signal strength or signal quality; if the network state information of the second network device includes the signal strength, the preset network state condition includes: the signal intensity is greater than a preset intensity threshold; and/or, if the network state information of the second network device includes the signal quality, the preset network state condition includes: the signal quality is greater than a preset quality threshold.

In a second aspect, the present disclosure provides a method for network access, applied to a second network device of a second network, the method including: under the condition that a first network device of a first network determines that a second network device is allowed to access a target terminal, receiving a first access request message sent by the first network device, wherein the first access request message is used for requesting the second network device to access the target terminal; determining whether to access the target terminal according to the first access request message; if the target terminal is determined to be accessed, sending a first access confirmation message to the first network device, so that the first network device sends first resource configuration information to the target terminal according to the first access confirmation message, wherein the first resource configuration information is used for the target terminal to access the second network device according to the first resource configuration information.

Optionally, the first access request message includes at least one of a service request rate or a data volume to be transmitted; the determining whether to access the target terminal according to the first access request message includes: under the condition that the first access request message comprises the service request rate, if the service request rate is less than the service rate supported by the rest network resources of the second network equipment, determining to access the target terminal; or, when the first access request message includes the data volume to be transmitted, if the data volume to be transmitted is smaller than the data volume supported by the remaining network resources of the second network device for transmission, determining to access the target terminal.

Optionally, after the sending the first access confirmation message to the first network device, the method further includes: acquiring network state information of at least one third network device in the second network; determining a target third network device according to the network state information of at least one third network device; sending a second access request message to the target third network device, where the second access request message is used to request the target third network device to access the target terminal; receiving a second access confirmation message sent by the target third network equipment; and sending second resource configuration information to the target terminal according to the second access confirmation message so that the target terminal can access the target third network equipment according to the second resource configuration information.

Optionally, the obtaining network state information of at least one third network device in the second network includes: sending second measurement configuration information to the target terminal, wherein the second measurement configuration information is used for acquiring network state information of at least one third network device; and receiving the network state information of at least one third network device, which is acquired by the target terminal according to the second measurement configuration information.

In a third aspect, the present disclosure provides an apparatus for network access, which is applied to a first network device of a first network, and the apparatus includes: the service request receiving module is used for receiving a service connection request sent by a target terminal; a determining module, configured to determine whether a second network device of a second network allows access to the target terminal; an access request sending module, configured to send a first access request message to the second network device according to the service connection request if the second network device allows access to the target terminal, where the first access request message is used to request the second network device to access the target terminal; a confirmation message receiving module, configured to receive a first access confirmation message sent by the second network device; and the configuration information sending module is used for sending first resource configuration information to the target terminal according to the first access confirmation message so that the target terminal can access the second network equipment according to the first resource configuration information.

Optionally, the determining module is specifically configured to: acquiring capability indication information of the target terminal; acquiring network state information of the second network equipment; and determining whether the second network equipment is allowed to access the target terminal or not according to the capability indication information and the network state information of the second network equipment.

Optionally, the determining module is further configured to: sending first measurement configuration information to the target terminal, wherein the first measurement configuration information is used for acquiring network state information of the second network equipment; and receiving the network state information of the second network equipment, which is acquired by the target terminal according to the first measurement configuration information.

Optionally, the capability indication information includes a frequency band combination of dual connectivity supported by the target terminal; the determining module is further configured to: acquiring a frequency band combination of double connection supported by the second network equipment; if the frequency band combination of the dual connection supported by the target terminal comprises the frequency band combination of the dual connection supported by the second network equipment, determining that the second network equipment has dual connection capability supporting the target terminal; determining whether the network state information of the second network equipment meets a preset network state condition; and if the network state information of the second network equipment meets the preset network state condition, determining that the second network equipment is allowed to access the target terminal.

In a fourth aspect, the present disclosure provides an apparatus for network access, which is applied to a second network device of a second network, and the apparatus includes: a request message receiving module, configured to receive a first access request message sent by a first network device of a first network when the first network device determines that a target terminal is allowed to be accessed by a second network device, where the first access request message is used to request the second network device to access the target terminal; an access determining module, configured to determine whether to access the target terminal according to the first access request message; a confirmation message sending module, configured to send a first access confirmation message to the first network device if it is determined that the target terminal is accessed, so that the first network device sends, according to the first access confirmation message, first resource configuration information to the target terminal, where the first resource configuration information is used for the target terminal to access the second network device according to the first resource configuration information.

Optionally, the first access request message includes at least one of a service request rate or a data volume to be transmitted; the access determination module is specifically configured to: under the condition that the first access request message comprises the service request rate, if the service request rate is less than the service rate supported by the rest network resources of the second network equipment, determining to access the target terminal; or, when the first access request message includes the data volume to be transmitted, if the data volume to be transmitted is smaller than the data volume supported by the remaining network resources of the second network device for transmission, determining to access the target terminal.

Optionally, the apparatus further comprises: an obtaining module, configured to obtain network state information of at least one third network device in the second network; the device determination module is used for determining a target third network device according to the network state information of at least one third network device; an access request sending module, configured to send a second access request message to the target third network device, where the second access request message is used to request the target third network device to access the target terminal; a confirmation message receiving module, configured to receive a second access confirmation message sent by the target third network device; and the configuration information sending module is used for sending second resource configuration information to the target terminal according to the second access confirmation message so that the target terminal can access the target third network equipment according to the second resource configuration information.

Optionally, the obtaining module is specifically configured to: sending second measurement configuration information to the target terminal, wherein the second measurement configuration information is used for acquiring network state information of at least one third network device; and receiving the network state information of at least one third network device, which is acquired by the target terminal according to the second measurement configuration information.

In a fifth aspect, the present disclosure provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of the first aspect of the present disclosure.

In a sixth aspect, the present disclosure provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of the second aspect of the present disclosure.

In a seventh aspect, the present disclosure provides a network device, including: a memory having a computer program stored thereon; a processor for executing the computer program in the memory to implement the steps of the method of the first aspect of the disclosure.

In an eighth aspect, the present disclosure provides a network device, comprising: a memory having a computer program stored thereon; a processor for executing the computer program in the memory to implement the steps of the method of the second aspect of the disclosure.

According to the technical scheme, after receiving a service connection request sent by a target terminal, a first network device of a first network determines whether a second network device of a second network is allowed to access the target terminal, if the second network device is allowed to access the target terminal, a first access request message is sent to the second network device according to the service connection request, a first access confirmation message sent by the second network device is received, and then first resource configuration information is sent to the target terminal according to the access confirmation message, so that the target terminal can access the second network device according to the first resource configuration information. In this way, after receiving the service connection request sent by the target terminal, the first network device of the first network may switch the target terminal to the second network device of the second network, and provide a service for the target terminal through the second network device, thereby implementing the co-establishment sharing of the networks.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a flowchart of a method for network access provided by an embodiment of the present disclosure;

fig. 2 is a flowchart of a second method for network access provided by an embodiment of the present disclosure;

fig. 3 is a flowchart of a third method for network access provided by an embodiment of the present disclosure;

fig. 4 is a flowchart of a fourth method for network access provided by an embodiment of the present disclosure;

fig. 5 is a flowchart of a fifth method for network access provided by an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an apparatus for network access according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an apparatus for second network access provided by an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of an apparatus for third network access provided by an embodiment of the present disclosure;

fig. 9 is a block diagram of a network device provided by an embodiment of the present disclosure;

fig. 10 is a block diagram of another network device provided by embodiments of the present disclosure.

Detailed Description

First, an application scenario of the present disclosure will be explained. In the 5G network construction process, in order to save the network construction cost, some operators use a network co-construction and sharing mode to construct the 5G network. For example, the chinese telecom and the chinese unicom will share the co-construction in the 3.5GHz band, and it is determined that an NSA (Non-Stand Alone networking) deployment scheme is adopted, the chinese telecom will use its 1.8GHz LTE (Long Term Evolution ) FDD (Frequency division duplex) as a MN (Master Node) of dual connection, the chinese unicom will use its 2.1 zghlte FDD as a MN of dual connection, and the 5G NR (New Radio) TDD (Time division duplex) of the 3.5GHz band will be used as an SN (Slave Node, secondary Node) of dual connection.

In order to simplify the configuration and complexity of the network, the sharing and sharing manner may be optimized, one operator is responsible for building the LTE and 5G sharing networks, and the other operator uses the sharing network in the sharing manner. For example, in a city a, the 5G NR of the 3.5GHz band is established by telecommunications, the telecommunications LTE uses 2.1GHz bearer, the telecommunications LTE and 5G perform dual connection and share the dual connection for the user in the connected state, and the LTE network in the connected state uses 1.8GHz bearer.

In view of the objectives of market competition, network efficiency maximization and the like, an operator generally expects a user to work in a 5G network, and therefore, the inventors of the present disclosure propose that, when a connected user with 5G capability initiates a service request at a connected LTE base station, the connected LTE base station may perform inter-operator handover, handover the user to a telecommunication LTE base station, and provide a 5G service for the user through the telecommunication LTE base station. However, the protocol flow and the using method related to the shared network are not defined in the related art.

In order to solve the above problem, the present disclosure provides a method, an apparatus, a storage medium, and a network device for network access. After receiving a service connection request sent by a target terminal, a first network device of a first network determines whether a second network device of a second network is allowed to access the target terminal, if the second network device is allowed to access the target terminal, a first access request message is sent to the second network device according to the service connection request, a first access confirmation message sent by the second network device is received, and then first resource configuration information is sent to the target terminal according to the access confirmation message, so that the target terminal accesses the second network device according to the first resource configuration information. In this way, after receiving the service connection request sent by the target terminal, the first network device of the first network may switch the target terminal to the second network device of the second network, and provide a service for the target terminal through the second network device, thereby implementing the co-establishment sharing of the networks.

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the description that follows, the terms "first," "second," and the like are used for descriptive purposes only and are not intended to indicate or imply relative importance nor order to be construed.

The first network of the present disclosure may be a mobile network capable of using a shared network, and the second network may be a mobile network allowing the first network to use the second network. For example, if china telecom is responsible for building an LTE and 5G dual connectivity network (shared network), and china unicom uses the shared network in a sharing manner, the first network may be a unicom LTE network, the first network device may be a unicom LTE base station, the second network device may be a shared network, the second network device may be a telecom LTE base station, and the third network device may be an NR base station.

Fig. 1 is a flowchart of a method for network access, which is applied to a first network device of a first network according to an embodiment of the present disclosure. The method can comprise the following steps:

s101, receiving a service connection request sent by a target terminal.

The Service connection request may include a terminal identifier of the target terminal and at least one of a Service request rate or a data volume to be transmitted, where the Service request rate may be determined according to a Quality of Service (QoS) of a Service requested to be established by the target terminal, and the data volume to be transmitted may be determined according to cache data of the Service requested to be established in a cache of the target terminal.

S102, whether a second network device of a second network is allowed to access the target terminal is determined.

The second network device may be a network device around and adjacent to the first network device, and the second network device may be an LTE base station in a second network.

In this step, the first network device may determine, through the network management system, whether the second network device is allowed to access the target terminal according to the terminal identifier of the target terminal. If the number of the second network devices is multiple, the network states of the multiple second network devices may be obtained, and the second network device with the best network state is selected to access the target terminal.

And S103, if the second network equipment allows to access the target terminal, sending a first access request message to the second network equipment according to the service connection request.

The first access request message is used to request the second network device to access the target terminal, and may include a terminal identifier of the target terminal, an operator identifier of an operator to which the target terminal belongs, and at least one of a service request rate or a data volume to be transmitted.

And S104, receiving a first access confirmation message sent by the second network equipment.

The first access confirmation message may include a beam identifier and a random access request preamble sequence identifier, which are used when the second network device allocates to the target terminal to transmit the random access request.

In this step, after receiving the first access confirmation message sent by the first network device, the second network device may obtain the remaining network resources of the second network device, and determine whether the remaining network resources can meet the requirement of the service requested by the target terminal according to the first access request message sent by the first network device. And if the residual network resources of the second network equipment can meet the requirement of the service requested by the target terminal, sending a first access confirmation message to the first network equipment.

S105, according to the first access confirmation message, first resource configuration information is sent to the target terminal.

The first resource configuration information may include a device identifier of the second network device, a frequency of the second network device, a beam identifier used when the second network device allocates to the target terminal to send the random access request, and a random access request preamble sequence identifier.

In this step, after receiving the access confirmation message sent by the second network device, the first network device may send the first resource configuration information to the target terminal according to the access confirmation message. After receiving the first resource configuration information sent by the first network device, the target terminal may send an access request to the second network device according to the first resource configuration information to request to access the second network device.

By adopting the method, after receiving a service connection request sent by a target terminal, a first network device of a first network determines whether a second network device of a second network is allowed to access the target terminal, if the second network device is allowed to access the target terminal, a first access request message is sent to the second network device according to the service connection request, a first access confirmation message sent by the second network device is received, and then first resource configuration information is sent to the target terminal according to the access confirmation message, so that the target terminal can access the second network device according to the first resource configuration information. In this way, the first network device of the first network can switch the target terminal using the first network to the second network device of the second network, and provide the service of the shared network for the target terminal through the second network device, thereby realizing the co-construction and sharing of the network.

Fig. 2 is a flowchart of a second network access method provided by an embodiment of the present disclosure. As shown in fig. 2, the method may include:

s201, receiving a service connection request sent by a target terminal.

The service connection request may include a terminal identifier of the target terminal and at least one of a service request rate or a data volume to be transmitted, where the service request rate may be determined according to QoS of a service requested to be established by the target terminal, and the data volume to be transmitted may be determined according to cache data of the service requested to be established in a cache of the target terminal.

S202, acquiring the capability indication information of the target terminal.

The capability indication information may include a dual-connection frequency band combination supported by the target terminal, and for example, the dual-connection frequency band combination supported by the target terminal may include an LTE frequency band and a 5G frequency band. As shown in table 1, the frequency band combinations of dual connectivity supported by 4 sets of target terminals are listed, which indicates that the target terminal can support dual connectivity in the 4 sets of frequency band combinations.

TABLE 1

In this step, after receiving the service connection request sent by the target terminal, the first network device may send a capability obtaining request message to the target terminal. After receiving the capability obtaining request message sent by the first network device, the target terminal may send capability indication information of the target terminal to the first network device according to the capability obtaining request message.

In addition, the first network device may further obtain capability indication information of the target terminal when the target terminal initiates network registration, and store the capability indication information in the server, so as to obtain the capability indication information from the server according to the terminal identifier of the target terminal when needed. The present disclosure does not limit the time when the first network device acquires the capability indication information of the target terminal.

S203, acquiring the network state information of the second network equipment.

Wherein the network state information of the second network device may comprise at least one of signal strength or signal quality.

In a possible implementation manner, the first network device may send the first measurement configuration information to the target terminal, and receive the network state information of the second network device, which is obtained by the target terminal according to the first measurement configuration information. The first measurement configuration information is used to obtain network state information of the second network device, and the first measurement configuration information may include a frequency point, a cell identifier, an access technology identifier of a shared network, and a measurement type of at least one second network device. The access technology identifier may include LTE, 5G NR, and the like, and in addition, the access technology identifier may also be distinguished by using a PLMN (public land Mobile Network) identifier, and a Network management mechanism may divide different PLMN identifiers for different access technologies of each operator; the measurement type may include at least one of signal strength or signal quality.

It should be noted that the frequency point of the second network device and the access technology identifier of the shared network may be determined according to the subscription information of the shared network, and the cell identifier of the second network device may be obtained through the network management system, that is, the network management system queries the identifier information of the adjacent second network device around the first network device.

After receiving the first measurement configuration information sent by the first network device, the target terminal may obtain the network state information of the second network device by using a method in the prior art according to the measurement type. For example, if the measurement type is signal strength, the target terminal may perform downlink synchronization with the second network device, perform correlation detection on the reference signal of the second network device by using the cell identifier after synchronization, and obtain the reception strength of the reference signal of the second network device, that is, signal strength. If the measurement type is Signal Quality, the target terminal may obtain the total received power of the received bandwidth after obtaining the received strength of the Reference Signal of the second network device in the above manner, and calculate the Signal Quality of the second network device, that is, RSRQ (Reference Signal Receiving Quality) or Signal-to-noise ratio (snr), according to the Signal strength and the total received power. After acquiring the network state information of the second network device according to the first measurement configuration information, the target terminal may send the network state information of the second network device to the first network device.

And S204, acquiring the frequency band combination of the double connection supported by the second network equipment.

In this step, the network management system may obtain the dual-connection frequency band combination supported by the second network device, for example, the network management system may query the dual-connection frequency band combination supported by the second network device through the device identifier of the second network device; the frequency band combination of the dual connectivity supported by the second network device may also be obtained according to the subscription information, where the manner of obtaining the frequency band combination of the dual connectivity supported by the second network device is not limited.

It should be noted that, after acquiring the dual-connection frequency band combination supported by the second network device, the first network device may also send, to the target terminal, capability acquisition request information according to the dual-connection frequency band combination supported by the second network device, where the capability acquisition request information may include the dual-connection frequency band combination supported by the second network device. After receiving the capability acquisition request information sent by the first network device, the target terminal may determine whether the dual-connection frequency band combination supported by the second network device includes the dual-connection frequency band combination supported by the second network device according to the dual-connection frequency band combination supported by the second network device in the capability acquisition request information, and send the dual-connection frequency band combination supported by the target terminal including the dual-connection frequency band combination supported by the second network device to the first network device. Therefore, the target terminal does not need to send all frequency band combinations of the dual connection supported by the target terminal, so that the size of the capability indication information can be reduced, and the transmission efficiency of the capability indication information can be improved.

S205, if the dual-connection frequency band combination supported by the target terminal includes the dual-connection frequency band combination supported by the second network device, determining that the second network device has dual-connection capability supporting the target terminal.

In this step, after acquiring the dual-connection frequency band combination supported by the target terminal, the first network device may determine whether the dual-connection frequency band combination supported by the target terminal includes the dual-connection frequency band combination supported by the second network device, and if the dual-connection frequency band combination supported by the target terminal includes the dual-connection frequency band combination supported by the second network device, determine that the second network device has the dual-connection capability of supporting the target terminal. For example, as shown in table 1, if the dual-connection frequency band combinations supported by the target terminal are combination 1, combination 2, combination 3, and combination 4, and the frequency band supported by the second network device is band 3 (uplink: 1710MHz-1730MHz, downlink: 1805MHz-1825MHz), it can be seen that the combination 3 of the dual-connection frequency band combinations supported by the target terminal includes the dual-connection frequency band combination supported by the second network device, and it can be determined that the second network device has the dual-connection capability of supporting the target terminal.

S206, determining whether the network state information of the second network equipment meets the preset network state condition.

In this step, after the first network device determines that the second network device has dual connectivity for supporting the target terminal, if the network status information of the second network device includes signal strength and the signal strength is greater than a preset strength threshold, it is determined that the network status information of the second network device satisfies a preset network status condition; if the network state information of the second network equipment comprises signal quality, and the signal quality is greater than a preset quality threshold, determining that the network state information of the second network equipment meets a preset network state condition; and if the network state information of the second network equipment comprises signal strength and signal quality, the signal strength is greater than a preset strength threshold value, and the signal quality is greater than a preset quality threshold value, determining that the network state information of the second network equipment meets a preset network state condition.

The preset strength threshold and the preset quality threshold may be preset by a method in the prior art, for example, when an operator plans a network, the load of an adjacent cell (the light load is less than 30%, the medium load is 30% -50%, and the heavy load is more than 50%), the rate value corresponding to the edge area of the local cell, and the signal strength or the signal quality of the received signal of the reference signal of the local cell may be obtained, and the preset strength threshold and the preset quality threshold may be determined according to the above information.

And S207, if the network state information of the second network equipment meets the preset network state condition, determining that the second network equipment is allowed to access the target terminal.

In this step, after it is determined that the second network device supports dual connectivity of the target terminal, if the network state information of the second network device satisfies the preset network state condition, it may be determined that the second network device allows access to the target terminal.

And S208, if the second network equipment allows to access the target terminal, sending a first access request message to the second network equipment according to the service connection request.

It should be noted that, if there are multiple second network devices allowed to access the target terminal, that is, multiple second network devices support dual connectivity of the target terminal, and the network states of the multiple second network devices all satisfy the preset network state condition, the target second network device with the strongest signal strength or the best signal quality may be selected from the multiple second network devices. The first network device may send a first access request message to the target second network device according to the service connection request. In this way, the first network device may select an optimal one of the second network devices according to the network states of the plurality of second network devices, so that the performance of the dual connectivity of the target terminal is better.

S209, receiving a first access confirmation message sent by the second network device.

In this step, after receiving the first access request message sent by the first network device, the second network device may determine whether the remaining network resources of the second network device can support the service request rate or the data volume to be transmitted according to the service request rate or the data volume to be transmitted carried in the first access request message. If the remaining network resources of the second network device can support the service request rate or the data volume to be transmitted, the second network device may send a first access confirmation message to the first network device.

S210, according to the first access confirmation message, first resource configuration information is sent to the target terminal.

In this step, after receiving the first access confirmation message sent by the second network device, the first network device may send the first resource configuration information to the target terminal according to the first access confirmation message. After receiving the first resource configuration information sent by the first network device, the target terminal may adjust a frequency corresponding to a receiver of the target terminal according to a frequency of the second network device, and receive a downlink synchronization signal of the second network device according to the frequency to perform downlink synchronization, and then may detect a reference signal of the second network device according to a device identifier of the second network device, and finally, initiate a random access request to the second network device according to the beam identifier and a random access request preamble sequence identifier.

By adopting the method, after the first network equipment of the first network receives the service connection request sent by the target terminal, the network state information of the second network equipment of the second network can be obtained, and whether the second network equipment is allowed to access the target terminal or not is determined according to the network state information of the second network equipment. If the second network device allows to access the target terminal, a first access request message is sent to the second network device according to a service connection request, a first access confirmation message sent by the second network device is received, and first resource configuration information is sent to the target terminal according to the first access confirmation message, so that the target terminal can access the second network device according to the first resource configuration information. Therefore, the first network equipment of the first network can switch the target terminal of the first network to the second network equipment of the second network, and the second network equipment provides the service of the shared network for the target terminal, thereby realizing the co-construction and sharing of the network.

Fig. 3 is a flowchart of a third method for network access, which is applied to a second network device of a second network according to an embodiment of the present disclosure. As shown in fig. 3, the method may include:

s301, receiving a first access request message sent by a first network device when the first network device of the first network determines that a second network device allows to access a target terminal.

S302, according to the first access request message, whether the target terminal is accessed is determined.

In this step, after the second network device receives the first access request message sent by the first network device, it may be determined whether to access the target terminal according to the remaining network resources of the second network device.

In a possible implementation manner, in a case that the first access request message includes a service request rate, if the service request rate is smaller than a service rate supported by remaining network resources of the second network device, determining to access the target terminal; and under the condition that the first access request message comprises the data volume to be transmitted, if the data volume to be transmitted is less than the data volume which is supported and transmitted by the remaining network resources of the second network equipment, determining to access the target terminal.

S303, if it is determined to access the target terminal, sending a first access confirmation message to the first network device.

In this step, if the second network device determines to access the target terminal, a first access confirmation message may be sent to the first network device. The first network device may send the first resource configuration information to the target terminal according to the first access confirmation message, and after receiving the first resource configuration information sent by the first network device, the target terminal may access the second network device according to the first resource configuration information. The first resource configuration information is used for the target terminal to access the second network device according to the first resource configuration information, and the first resource configuration information may include a device identifier of the second network device, a frequency of the second network device, a beam identifier used when the second network device allocates the target terminal to send the random access request, and a random access request preamble sequence identifier.

By adopting the method, under the condition that the first network equipment of the first network determines that the second network equipment of the second network allows to access the target terminal, the second network equipment can receive the first access request message sent by the first network equipment and determine whether to access the target terminal according to the first access request message; and if the target terminal is determined to be accessed, sending a first access confirmation message to the first network equipment, so that the first network equipment sends first resource configuration information to the target terminal according to the first access confirmation message, wherein the first resource configuration information is used for the target terminal to access the second network equipment according to the first resource configuration information. In this way, the second network device of the second network can access the target terminal of the first network and provide the service of the shared network for the target terminal, thereby realizing the co-construction and sharing of the network.

Fig. 4 is a flowchart of a fourth method for network access provided by an embodiment of the present disclosure. As shown in fig. 4, the method may include:

s401, under the condition that a first network device of a first network determines that a second network device allows to access a target terminal, receiving a first access request message sent by the first network device.

S402, according to the first access request message, whether the target terminal is accessed is determined.

S403, if the target terminal is determined to be accessed, a first access confirmation message is sent to the first network device.

In this step, after receiving the first access confirmation message sent by the second network device, the first network device may send the first resource configuration information to the target terminal according to the first access confirmation message. After receiving the first resource configuration information sent by the first network device, the target terminal may send a random access request to the second network device according to the first resource configuration information.

S404, network state information of at least one third network device in the second network is obtained.

Wherein the third network device may be an NR base station in the second network, and the network state information of the third network device may include at least one of signal strength or signal quality.

In this step, after receiving the random access request sent by the target terminal, the second network device may obtain network state information of at least one third network device in the second network.

In a possible implementation manner, the second network device may send second measurement configuration information to the target terminal, where the second measurement configuration information is used to obtain network state information of at least one third network device; and receiving the network state information of at least one third network device acquired by the target terminal according to the second measurement configuration information. The second measurement configuration information is used to obtain network state information of the third network device, and the second measurement configuration information may include a frequency point, a cell identifier, and a measurement type of at least one third network device.

After receiving the second measurement configuration information sent by the second network device, the target terminal may obtain the network state information of at least one third network device according to the second measurement configuration information, where the manner in which the target terminal obtains the network state information of the third network device may refer to the manner in which the network state information of the second network device is obtained, and details are not described here.

It should be noted that, when the first network device sends the first measurement configuration information to the target terminal, the second network device may also send the second measurement configuration information at the same time, so as to obtain the network status information of the second network device and the third network device at the same time. Then, when the first network device sends the first access request message to the second network device, the first network device may send a measurement result of the network state information of the third network device, which is obtained by the target terminal, to the second network device, where the measurement result may include a frequency point of the third network device, a device identifier, a reception intensity or reception quality of the reference signal, and a reception intensity or reception quality of the reference signal of each beam. The second network device may store the measurement result and obtain the measurement result after receiving the access request message sent by the target terminal. Therefore, the time for the second network equipment to acquire the network state information of the third network equipment again can be saved, and the speed of the target terminal for double connection can be increased.

S405, determining a target third network device according to the network state information of at least one third network device.

In this step, if there are a plurality of third network devices, one of the plurality of third network devices with the best network status (the strongest signal or the best signal quality) may be obtained as the target third network device.

S406, sending a second access request message to the target third network device.

The second access request message is used to request the target third network device to access the target terminal, and the second access request message may include a terminal identifier of the target terminal, a service request speed or a data amount to be transmitted, a service address, and a beam identifier of a third network device service that is expected to be obtained, where the beam is a beam with the strongest reference signal reception strength or the best reception quality in the measurement result.

S407, receiving a second access confirmation message sent by the target third network device.

S408, according to the second access confirmation message, second resource configuration information is sent to the target terminal.

The second resource configuration information is used for the target terminal to access the target third network device according to the second resource configuration information, and the second resource configuration information may include a device identifier of the target third network device, a frequency of the target third network device, a beam identifier used when the target third network device allocates to the target terminal to send the random access request, and a random access request preamble sequence identifier.

In this step, after receiving the second access confirmation message sent by the target third network device, the second network device may send the second resource configuration information to the target terminal according to the second access confirmation message. After receiving the second resource configuration information sent by the second network device, the target terminal may initiate a service connection request to the target third network device according to the second resource configuration information, so as to request to establish the dual connectivity service.

By adopting the method, after receiving a first access request message sent by a first network device of a first network, a second network device of a second network can determine whether to access the target terminal according to the first access request message; if the target terminal is determined to be accessed, sending a first access confirmation message to the first network equipment so that the first network equipment can send first resource configuration information to the target terminal according to the first access confirmation message; after the target terminal accesses the second network device according to the first resource configuration information, the second network device may obtain network state information of a target third network device of the second network, and send a second access request message to the target third network device to request the target third network device to access the target terminal. In this way, the second network device of the second network can access the target terminal of the first network and establish the dual connectivity service for the target terminal, thereby realizing the co-establishment sharing of the network.

Fig. 5 is a flowchart of a fifth method for network access provided by an embodiment of the present disclosure. As shown in fig. 5, the method may include:

s501, the first network equipment receives a service connection request sent by a target terminal.

S502, the first network device determines whether a second network device of a second network allows to access the target terminal.

S503, if the second network device allows accessing the target terminal, the first network device sends a first access request message to the second network device according to the service connection request.

S504, the second network device receives a first access request message sent by the first network device.

And S505, the second network device determines whether to access the target terminal according to the first access request message.

S506, if the second network device determines to access the target terminal, the second network device sends a first access confirmation message to the first network device.

S507, the first network device receives the first access confirmation message sent by the second network device.

S508, the first network device sends the first resource allocation information to the target terminal according to the first access confirmation message.

By adopting the method, after receiving a service connection request sent by a target terminal, a first network device of a first network determines whether a second network device of a second network is allowed to access the target terminal, and if the second network device is allowed to access the target terminal, a first access request message is sent to the second network device according to the service connection request; and the second network equipment determines whether to access the target terminal according to the first access request message, and sends a first access confirmation message to the first network equipment if the target terminal is determined to be accessed. Then, the first network device may send the first resource configuration information to the target terminal according to the access confirmation message, so that the target terminal accesses the second network device according to the first resource configuration information. In this way, the first network device of the first network can switch the target terminal of the first network to the second network device of the second network, and provide the service of the shared network for the target terminal through the second network device, thereby realizing the co-construction and sharing of the network.

Fig. 6 is a schematic structural diagram of an apparatus for network access, which is applied to a first network device of a first network according to an embodiment of the present disclosure. As shown in fig. 6, the apparatus includes:

a service request receiving module 601, configured to receive a service connection request sent by a target terminal;

a determining module 602, configured to determine whether a second network device of a second network allows accessing the target terminal;

an access request sending module 603, configured to send, if the second network device allows accessing the target terminal, a first access request message to the second network device according to the service connection request, where the first access request message is used to request the second network device to access the target terminal;

a confirmation message receiving module 604, configured to receive a first access confirmation message sent by the second network device;

a configuration information sending module 605, configured to send first resource configuration information to the target terminal according to the first access confirmation message, so that the target terminal accesses the second network device according to the first resource configuration information.

Optionally, the determining module 602 is specifically configured to: acquiring capability indication information of a target terminal; acquiring network state information of second network equipment; and determining whether the second network equipment is allowed to access the target terminal according to the capability indication information and the network state information of the second network equipment.

Optionally, the determining module 602 is further configured to: sending first measurement configuration information to a target terminal, wherein the first measurement configuration information is used for acquiring network state information of second network equipment; and receiving the network state information of the second network equipment, which is acquired by the target terminal according to the first measurement configuration information.

Optionally, the capability indication information includes a dual-connection frequency band combination supported by the target terminal; the determining module 602 is further configured to: acquiring a frequency band combination of double connection supported by second network equipment; if the frequency band combination of the dual connection supported by the target terminal comprises the frequency band combination of the dual connection supported by the second network equipment, determining that the second network equipment has the dual connection capability of supporting the target terminal; determining whether the network state information of the second network equipment meets a preset network state condition; and if the network state information of the second network equipment meets the preset network state condition, determining that the second network equipment is allowed to access the target terminal.

Optionally, the network status information of the second network device comprises at least one of signal strength or signal quality; if the network status information of the second network device includes the signal strength, the preset network status condition includes: the signal intensity is greater than a preset intensity threshold; and/or, if the network state information of the second network device includes signal quality, the preset network state condition includes: the signal quality is greater than a preset quality threshold.

Through the device, after receiving a service connection request sent by a target terminal, a first network device of a first network determines whether a second network device of a second network is allowed to access the target terminal, if the second network device is allowed to access the target terminal, a first access request message is sent to the second network device according to the service connection request, a first access confirmation message sent by the second network device is received, and then first resource configuration information is sent to the target terminal according to the access confirmation message, so that the target terminal can access the second network device according to the first resource configuration information. In this way, the first network device of the first network can switch the target terminal using the first network to the second network device of the second network, and provide the service of the shared network for the target terminal through the second network device, thereby realizing the co-construction and sharing of the network.

Fig. 7 is a schematic structural diagram of an apparatus for accessing a second network, which is applied to a second network device of the second network according to an embodiment of the present disclosure. As shown in fig. 7, the apparatus includes:

a request message receiving module 701, configured to receive a first access request message sent by a first network device when the first network device of a first network determines that a second network device is allowed to access a target terminal, where the first access request message is used to request the second network device to access the target terminal;

an access determining module 702, configured to determine whether to access the target terminal according to the first access request message;

a confirmation message sending module 703 is configured to send a first access confirmation message to the first network device if it is determined that the target terminal is accessed, so that the first network device sends, according to the first access confirmation message, first resource configuration information to the target terminal, where the first resource configuration information is used for the target terminal to access a second network device according to the first resource configuration information.

Optionally, the first access request message includes at least one of a service request rate or a data volume to be transmitted; the access determining module 702 is specifically configured to: under the condition that the first access request message comprises a service request rate, if the service request rate is less than the service rate supported by the rest network resources of the second network equipment, determining to access the target terminal; or, in the case that the first access request message includes the data volume to be transmitted, if the data volume to be transmitted is smaller than the data volume supported by the remaining network resources of the second network device for transmission, determining to access the target terminal.

Optionally, as shown in fig. 8, the apparatus further includes:

an obtaining module 704, configured to obtain network status information of at least one third network device in the second network;

a device determining module 705, configured to determine a target third network device according to network state information of at least one third network device;

an access request sending module 706, configured to send a second access request message to the target third network device, where the second access request message is used to request the target third network device to access the target terminal;

a confirmation message receiving module 707, configured to receive a second access confirmation message sent by the target third network device;

a configuration information sending module 708, configured to send second resource configuration information to the target terminal according to the second access confirmation message, so that the target terminal accesses the target third network device according to the second resource configuration information.

Optionally, the obtaining module 704 is specifically configured to: sending second measurement configuration information to the target terminal, wherein the second measurement configuration information is used for acquiring network state information of at least one third network device; and receiving the network state information of at least one third network device acquired by the target terminal according to the second measurement configuration information.

By the device, when a first network device of a first network determines that a second network device of a second network allows to access a target terminal, the second network device may receive a first access request message sent by the first network device, and determine whether to access the target terminal according to the first access request message; and if the target terminal is determined to be accessed, sending a first access confirmation message to the first network equipment, so that the first network equipment sends first resource configuration information to the target terminal according to the first access confirmation message, wherein the first resource configuration information is used for the target terminal to access the second network equipment according to the first resource configuration information. In this way, the second network device of the second network can access the target terminal of the first network and provide the service of the shared network for the target terminal, thereby realizing the co-construction and sharing of the network.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 9 is a block diagram illustrating a network device 900 in accordance with an example embodiment. For example, network device 900 may be provided as a server. Referring to fig. 9, network device 900 includes a processor 922, which may be one or more in number, and a memory 932 for storing computer programs executable by processor 922. The computer programs stored in memory 932 may include one or more modules that each correspond to a set of instructions. Further, the processor 922 may be configured to execute the computer program to perform the method of network access of the embodiment shown in fig. 1.

Additionally, the network device 900 may also include a power component 926 and a communication component 950, the power component 926 may be configured to perform power management of the network device 900, and the communication component 950 may be configured to enable communication, e.g., wired or wireless communication, of the network device 900. The network device 900 may also include input/output (I/O) interfaces 958. The network device 900 may operate based on an operating system stored in memory 932, such as Windows Server, Mac OSXTM, UnixTM, LinuxTM, and the like.

In another exemplary embodiment, a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the method of network access of the embodiment shown in fig. 1 described above is also provided. For example, the computer readable storage medium may be the memory 932 described above that includes program instructions executable by the processor 922 of the network device 900 to perform the method for network access of the embodiment shown in fig. 1 described above.

In another exemplary embodiment, a computer program product is also provided, which comprises a computer program executable by a programmable apparatus, the computer program having code portions for performing the method for network access of the embodiment shown in fig. 1 described above when executed by the programmable apparatus.

Fig. 10 is a block diagram illustrating a network device 1000 in accordance with an example embodiment. For example, the network device 1000 may be provided as a server. Referring to fig. 10, the network device 1000 includes a processor 1022, which may be one or more in number, and a memory 1032 for storing computer programs executable by the processor 1022. The computer programs stored in memory 1032 may include one or more modules that each correspond to a set of instructions. Further, the processor 1022 may be configured to execute the computer program to perform the method of network access of the embodiment shown in fig. 2.

Additionally, the network device 1000 may also include a power component 1026 and a communication component 1050, the power component 1026 may be configured to perform power management of the network device 1000, and the communication component 1050 may be configured to enable communication of the network device 1000, e.g., wired or wireless communication. In addition, the network device 1000 may also include input/output (I/O) interfaces 1058. Network device 1000 may operate based on an operating system stored in memory 1032, such as a Windows Server, Mac OS XTM, UnixTM, Linux, and the like.

In another exemplary embodiment, a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the method of network access of the embodiment shown in fig. 2 described above is also provided. For example, the computer readable storage medium may be the memory 1032 comprising program instructions that are executable by the processor 1022 of the network device 1000 to perform the method for network access of the embodiment shown in fig. 2.

In another exemplary embodiment, a computer program product is also provided, which comprises a computer program executable by a programmable apparatus, the computer program having code portions for performing the method for network access of the embodiment shown in fig. 2 described above when executed by the programmable apparatus.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure. For example, it should be noted that the various technical features described in the above embodiments may be combined in any suitable manner without contradiction, and the disclosure does not separately describe various possible combinations in order to avoid unnecessary repetition.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A method for network access, applied to a first network device of a first network, the method comprising:

receiving a service connection request sent by a target terminal;

determining whether a second network device of a second network allows access to the target terminal;

if the second network device allows to access the target terminal, sending a first access request message to the second network device according to the service connection request, wherein the first access request message is used for requesting the second network device to access the target terminal;

receiving a first access confirmation message sent by the second network equipment;

and sending first resource configuration information to the target terminal according to the first access confirmation message so that the target terminal can access the second network equipment according to the first resource configuration information.

2. The method of claim 1, wherein the determining whether a second network device of a second network is allowed to access the target terminal comprises:

acquiring capability indication information of the target terminal;

acquiring network state information of the second network equipment;

and determining whether the second network equipment is allowed to access the target terminal or not according to the capability indication information and the network state information of the second network equipment.

3. The method of claim 2, wherein the obtaining network status information of the second network device comprises:

sending first measurement configuration information to the target terminal, wherein the first measurement configuration information is used for acquiring network state information of the second network equipment;

and receiving the network state information of the second network equipment, which is acquired by the target terminal according to the first measurement configuration information.

4. The method of claim 2, wherein the capability indication information includes a frequency band combination of dual connectivity supported by the target terminal; the determining whether the second network device is allowed to access the target terminal according to the capability indication information and the network state information of the second network device includes:

acquiring a frequency band combination of double connection supported by the second network equipment;

if the frequency band combination of the dual connection supported by the target terminal comprises the frequency band combination of the dual connection supported by the second network equipment, determining that the second network equipment has dual connection capability supporting the target terminal;

determining whether the network state information of the second network equipment meets a preset network state condition;

and if the network state information of the second network equipment meets the preset network state condition, determining that the second network equipment is allowed to access the target terminal.

5. The method of claim 4, wherein the network status information of the second network device comprises at least one of signal strength or signal quality;

if the network state information of the second network device includes the signal strength, the preset network state condition includes: the signal intensity is greater than a preset intensity threshold; and/or the presence of a gas in the gas,

if the network state information of the second network device includes the signal quality, the preset network state condition includes: the signal quality is greater than a preset quality threshold.

6. A method for network access, applied to a second network device of a second network, the method comprising:

under the condition that a first network device of a first network determines that a second network device is allowed to access a target terminal, receiving a first access request message sent by the first network device, wherein the first access request message is used for requesting the second network device to access the target terminal;

determining whether to access the target terminal according to the first access request message;

if the target terminal is determined to be accessed, sending a first access confirmation message to the first network device, so that the first network device sends first resource configuration information to the target terminal according to the first access confirmation message, wherein the first resource configuration information is used for the target terminal to access the second network device according to the first resource configuration information.

7. The method of claim 6, wherein the first access request message comprises at least one of a service request rate or an amount of data to be transmitted; the determining whether to access the target terminal according to the first access request message includes:

under the condition that the first access request message comprises the service request rate, if the service request rate is less than the service rate supported by the rest network resources of the second network equipment, determining to access the target terminal; alternatively, the first and second electrodes may be,

and under the condition that the first access request message comprises the data volume to be transmitted, if the data volume to be transmitted is less than the data volume which is supported and transmitted by the remaining network resources of the second network equipment, determining to access the target terminal.

8. The method of claim 6, wherein after the sending the first access confirmation message to the first network device, the method further comprises:

acquiring network state information of at least one third network device in the second network;

determining a target third network device according to the network state information of at least one third network device;

sending a second access request message to the target third network device, where the second access request message is used to request the target third network device to access the target terminal;

receiving a second access confirmation message sent by the target third network equipment;

and sending second resource configuration information to the target terminal according to the second access confirmation message so that the target terminal can access the target third network equipment according to the second resource configuration information.

9. The method of claim 8, wherein obtaining network status information of at least one third network device in the second network comprises:

sending second measurement configuration information to the target terminal, wherein the second measurement configuration information is used for acquiring network state information of at least one third network device;

and receiving the network state information of at least one third network device, which is acquired by the target terminal according to the second measurement configuration information.

10. An apparatus for network access, applied to a first network device of a first network, the apparatus comprising:

the service request receiving module is used for receiving a service connection request sent by a target terminal;

a determining module, configured to determine whether a second network device of a second network allows access to the target terminal;

an access request sending module, configured to send a first access request message to the second network device according to the service connection request if the second network device allows access to the target terminal, where the first access request message is used to request the second network device to access the target terminal;

a confirmation message receiving module, configured to receive a first access confirmation message sent by the second network device;

and the configuration information sending module is used for sending first resource configuration information to the target terminal according to the first access confirmation message so that the target terminal can access the second network equipment according to the first resource configuration information.

11. The apparatus of claim 10, wherein the determining module is specifically configured to:

acquiring capability indication information of the target terminal;

acquiring network state information of the second network equipment;

12. The apparatus of claim 11, wherein the determining module is further configured to:

13. The apparatus of claim 11, wherein the capability indication information comprises a frequency band combination of dual connectivity supported by the target terminal; the determining module is further configured to:

14. The apparatus of claim 13, wherein the network status information of the second network device comprises at least one of signal strength or signal quality;

15. An apparatus for network access, applied to a second network device of a second network, the apparatus comprising:

a request message receiving module, configured to receive a first access request message sent by a first network device of a first network when the first network device determines that a target terminal is allowed to be accessed by a second network device, where the first access request message is used to request the second network device to access the target terminal;

an access determining module, configured to determine whether to access the target terminal according to the first access request message;

a confirmation message sending module, configured to send a first access confirmation message to the first network device if it is determined that the target terminal is accessed, so that the first network device sends, according to the first access confirmation message, first resource configuration information to the target terminal, where the first resource configuration information is used for the target terminal to access the second network device according to the first resource configuration information.

16. The apparatus of claim 15, wherein the first access request message comprises at least one of a service request rate or an amount of data to be transmitted; the access determination module is specifically configured to:

17. The apparatus of claim 15, further comprising:

an obtaining module, configured to obtain network state information of at least one third network device in the second network;

the device determination module is used for determining a target third network device according to the network state information of at least one third network device;

an access request sending module, configured to send a second access request message to the target third network device, where the second access request message is used to request the target third network device to access the target terminal;

a confirmation message receiving module, configured to receive a second access confirmation message sent by the target third network device;

and the configuration information sending module is used for sending second resource configuration information to the target terminal according to the second access confirmation message so that the target terminal can access the target third network equipment according to the second resource configuration information.

18. The apparatus of claim 17, wherein the obtaining module is specifically configured to:

19. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.

20. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 6 to 9.

21. A network device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 1 to 5.

22. A network device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 6 to 9.