CN107708212B - Method and device for configuring broken link maintaining time - Google Patents

Method and device for configuring broken link maintaining time Download PDF

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Publication number
CN107708212B
CN107708212B CN201610648289.7A CN201610648289A CN107708212B CN 107708212 B CN107708212 B CN 107708212B CN 201610648289 A CN201610648289 A CN 201610648289A CN 107708212 B CN107708212 B CN 107708212B
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time
cbsd
link
maintaining
maintaining time
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CN107708212A (en
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庄荣海
张慧娜
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Abstract

The invention discloses a method for configuring broken link maintaining time, which comprises the following steps: receiving heartbeat response information sent by a frequency Spectrum Access System (SAS); acquiring a time parameter of a wireless signal transmitting device CBSD, and acquiring a broken link maintaining time according to the time parameter and the heartbeat response information, wherein the broken link maintaining time is the time length for which the CBSD can continue to transmit wireless signals when sensing that the communication with a Proxy server Domain Proxy is interrupted; and when setting the spectrum parameters, configuring the broken link maintaining time to the CBSD. The invention also discloses a device for configuring the broken link maintaining time. The invention can reduce the message interaction times between the Domain Proxy and the EMS/CBSD, and reduce the service quitting time of the CBSD when the communication is unstable.

Description

Method and device for configuring broken link maintaining time
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for configuring a time for maintaining a broken link.
Background
WinForum is a non-profit organization, and the SAS-CBSD interface protocol organized and formulated by the WinForum is a protocol for dynamic application of public wireless spectrum resources. The main protocol entities include SAS (Spectrum Access System), domain Proxy (Proxy server), EMS (Element Management System), and CBSD (national broadband wireless Service Device). The CBSD provides, for example, a wireless access or signal relay function for a wireless signal transmitting device, such as an LTE eNB base station device; EMS is CBSD network element management system; the Domain Proxy is responsible for acting on CBSD equipment under the EMS, applying for public wireless spectrum from the SAS, and configuring the public wireless spectrum to the CBSD through the EMS; the SAS is responsible for receiving public wireless spectrum resource applications and distributing spectrum resources. Every time the SAS returns a heartbeat response to the Domain Proxy, the signal transmission overtime time (world uniform time) is carried, and before the signal transmission overtime time, the signal transmission of the CBSD conforms to the frequency spectrum authorization of the SAS.
In the prior art, one method for configuring the signal emission overdue time to the CBSD by the Domain Proxy is that the Domain Proxy directly configures the signal emission overdue time to the CBSD, and the method needs to perform frequent message interaction with the EMS/CBSD, so that the CBSD management capacity of the Domain Proxy and the EMS is reduced to a certain extent; another method is that the Domain Proxy does not allocate a signal transmission timeout period to the CBSD, but only notifies the CBSD to stop signal transmission when a failed heartbeat response is received and the signal transmission timeout period carried by the SAS is imminent in the last successful heartbeat response, and this method has the problem that when communication between the Domain Proxy and the CBSD is interrupted, the CBSD needs to immediately stop signal transmission in order to ensure that the SAS spectrum authorization is not violated, even if there is a time from the signal transmission timeout period, so that even if communication between the Domain Proxy and the CBSD is resumed before the signal transmission timeout period, the CBSD has a time to exit service, and thus is not conducive to the continuous transmission of wireless signals.
Disclosure of Invention
The invention mainly aims to provide a method and a device for configuring broken link maintenance time, aiming at reducing the number of message interaction between a Domain Proxy and an EMS/CBSD and reducing the service quitting time of the CBSD when communication is unstable.
In order to achieve the above object, the present invention provides a method for configuring a time for maintaining a broken link, the method comprising the steps of:
receiving heartbeat response information sent by a frequency spectrum access system SAS;
acquiring a time parameter of a wireless signal transmitting device CBSD, and acquiring a broken link maintaining time according to the time parameter and the heartbeat response information, wherein the broken link maintaining time is the time length for which the CBSD can continue to transmit wireless signals when sensing that the communication with a Proxy server Domain Proxy is interrupted;
and when setting the spectrum parameters, configuring the broken link maintaining time to the CBSD.
Optionally, the heartbeat response information includes a heartbeat response time t 0 Signal emission timeout time t transmitExpireTime Heart cycle T heartbeatDuration The time parameter comprises an interrupt perception time T link Stopping the signal transmission time T shut The step of obtaining the chain breakage maintaining time according to the transmission parameter and the heartbeat response information comprises:
judging t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Whether the result is true or not;
if yes, responding to the time t according to the heartbeat 0 Signal emission timeout time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stopping the signal transmission time T shut Calculating the chain breaking maintenance time T remain Wherein:
T remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut )；
if not, taking T remain ＝0。
Optionally, said responding to time t according to said heartbeat 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stopping the signal transmission time T shut Calculating the chain breakage maintaining time T remain After the step (2), further comprising:
according to the calculated T remain Acquiring a mapping value of the broken link maintaining time according to a preset rule;
the step of configuring the chain breakage maintaining time to the CBSD when setting the spectrum parameters comprises:
and when setting the spectrum parameters, configuring the mapping value of the broken link maintaining time to the CBSD.
Optionally, before the step of configuring the chain breakage maintaining time to the CBSD when setting the spectrum parameter, the method further includes:
acquiring the frequency spectrum distribution state of the CBSD;
respectively comparing the frequency spectrum distribution state of the CBSD and the acquired chain breakage maintaining time with the frequency spectrum distribution state of the CBSD and the acquired chain breakage maintaining time when the heartbeat response is received at the previous time;
and if the frequency spectrum distribution state or the chain breakage maintaining time of the CBSD is changed, starting a frequency spectrum parameter setting function.
Optionally, before the step of configuring the chain breakage maintaining time to the CBSD when setting the spectrum parameter, the method further includes:
when the communication between the Domain Proxy and the CBSD is interrupted, detecting whether the Domain Proxy and the CBSD resume the communication;
and if so, starting a function of setting the frequency spectrum parameters.
In addition, to achieve the above object, the present invention provides a device for configuring a time for maintaining a broken link, the device comprising:
the receiving module is used for receiving heartbeat response information sent by the frequency spectrum access system SAS;
the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring a time parameter of the wireless signal transmitting equipment CBSD and acquiring a broken link maintaining time according to the time parameter and the heartbeat response information, and the broken link maintaining time is the time length for which the CBSD can continue to transmit wireless signals when sensing that the communication with a Proxy server Domain Proxy is interrupted;
and the configuration module is used for configuring the broken link maintaining time to the CBSD when setting the spectrum parameters.
Optionally, the heartbeat response information includes a heartbeat response time t 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration The time parameter comprises an interrupt perception time T link Stopping the signal transmission time T shut The first obtaining module comprises:
a determination unit for determining t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Whether the result is true or not;
a computing unit for if t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If yes, responding to the time t according to the heartbeat 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stopping the signal transmission time T shut Calculating the chain breakage maintaining time T remain Wherein:
T remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut )；
if t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If not, taking T remain ＝0。
Optionally, the first obtaining module further includes:
an acquisition unit for obtaining T according to the calculation remain Acquiring a mapping value of the broken link maintaining time according to a preset rule;
the configuration module is further configured to configure the mapping value of the broken link maintaining time to the CBSD when setting the spectrum parameter.
Optionally, the apparatus further comprises:
a second obtaining module, configured to obtain a spectrum allocation state of the CBSD;
the comparison module is used for respectively comparing the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD with the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD when the heartbeat response is received at the previous time;
and the first enabling module is used for enabling the function of setting the spectrum parameters if the spectrum allocation state or the broken link maintaining time of the CBSD is changed.
Optionally, the apparatus further comprises:
the detection module is used for detecting whether the Domain Proxy and the CBSD recover communication or not when the communication between the Domain Proxy and the CBSD is interrupted;
and the second enabling module is used for enabling the function of setting the spectrum parameters if the Domain Proxy and the CBSD resume communication.
The invention receives heartbeat response information sent by a frequency spectrum access system SAS; acquiring a time parameter of a wireless signal transmitting device CBSD, and acquiring a broken link maintaining time according to the time parameter and the heartbeat response information, wherein the broken link maintaining time is the time length for which the CBSD can continue to transmit wireless signals when sensing that the communication with a Proxy server Domain Proxy is interrupted; and when setting the spectrum parameters, configuring the broken link maintaining time to the CBSD. The invention provides a new concept: the method comprises the steps of converting signal transmission overdue time carried by heartbeat response into broken link maintaining time when the Domain Proxy receives the heartbeat response of the SAS every time, and configuring the broken link maintaining time to the CBSD only when spectrum parameters are set, so that the message interaction times between the Domain Proxy and the EMS/CBSD are reduced. The invention can reduce the message interaction times between the Domain Proxy and the EMS/CBSD, and reduce the service quitting time of the CBSD when the communication is unstable.
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Fig. 1 is a functional architecture diagram of an alternative dynamic application of public wireless spectrum resources according to various embodiments of the present invention;
FIG. 2 is a flowchart illustrating a method for configuring a time for maintaining a broken link according to a first embodiment of the present invention;
FIG. 3 is a diagram of a second embodiment of a method for allocating a time for maintaining a broken link according to the present invention remain The schematic diagram of the calculation flow of (1);
FIG. 4 shows an embodiment of the present invention T remain A schematic diagram of the calculation of (a);
FIG. 5 is a flowchart illustrating a third embodiment of a method for configuring a time for maintaining a broken link according to the present invention;
FIG. 6 is a flowchart illustrating a fourth embodiment of a method for configuring a time for maintaining a broken link according to the present invention;
FIG. 7 is a functional block diagram of a device for configuring a time for maintaining a broken link according to a first embodiment of the present invention;
FIG. 8 is a block diagram illustrating a refinement function of the first obtaining module of FIG. 7;
FIG. 9 is a schematic diagram of another detailed functional block of the first obtaining module in FIG. 7;
FIG. 10 is a functional block diagram of a second embodiment of a device for configuring a time for maintaining a broken link according to the present invention;
fig. 11 is a functional block diagram of a device for configuring a time for maintaining a broken link according to a third embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a system functional architecture of an alternative dynamic application of public wireless spectrum resources according to various embodiments of the present invention. The system is a public wireless spectrum resource dynamic application system, and mainly comprises an FCC (Federal Communications Commission) database, a spectrum access system SAS1, a spectrum access system SAS2, an online detection server, a Proxy server Domain Proxy, a network element management system EMS and national broadband wireless service equipment CBSD, wherein the spectrum access system SAS1 can be mutually connected with the online detection server, so that the CBSD comprises certain environment sensing capability. The communication between the spectrum access system SAS1 and the spectrum access system SAS2 is realized through an SAS-SAS interface, and the communication between the spectrum access system SAS1 and the Domain Proxy is realized through an SAS-USER interface.
The CBSD provides, for example, a wireless access or signal relay function for a wireless signal transmitting device, such as an LTE eNB base station device; EMS is CBSD network element management system, can manage a plurality of CBSD; the Domain Proxy is responsible for acting on CBSD equipment under the EMS, applying for public wireless spectrum from the SAS, and configuring the public wireless spectrum to the CBSD through the EMS; the SAS is responsible for receiving public wireless spectrum resource applications and distributing spectrum resources. Certainly, the CBSD device may also apply for public wireless spectrum resources from the SAS by itself, which is not within the scope of the present invention and will not be described herein.
The normal process of Domain Proxy spectrum application can be briefly described as follows:
1) The Domain Proxy sends a registration request to the SAS, and carries CBSD registration information;
2) The SAS returns a registration response to the Domain Proxy and returns a CBSD identity (cbsdid);
3) The Domain Proxy sends a frequency spectrum query request to the SAS, and carries information such as a target frequency spectrum segment and the like;
4) The SAS returns a frequency spectrum query response to the Domain Proxy, and the frequency spectrum query response carries available frequency spectrum segment information;
5) The Domain Proxy sends an authorization request to the SAS, wherein the authorization request carries information such as a quasi-occupied spectrum segment, power and the like;
6) The SAS returns an authorization response to the Domain Proxy, and the authorization response carries information such as an authorization identifier (grantid), authorization expiration time, heartbeat cycle and the like;
7) The Domain Proxy sends a heartbeat request to the SAS;
8) The SAS returns a heartbeat response to the Domain Proxy, and the heartbeat response carries the signal transmission overdue time.
9) If the spectrum allocation condition changes, the Domain Proxy initiates a process of setting spectrum parameters to complete the configuration of the CBSD spectrum and power.
The invention provides various embodiments of a method and a device for configuring the broken link maintaining time based on the system function architecture of the dynamic application of the public wireless spectrum resources.
The invention provides a method for configuring a broken link maintaining time.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for configuring a time for maintaining a broken link according to a first embodiment of the present invention. The method comprises the following steps:
and step S10, receiving heartbeat response information sent by the frequency spectrum access system SAS.
In this embodiment, the Domain Proxy sends a heartbeat request to the SAS at intervals and receives heartbeat response information returned by the SAS, so as to maintain a long connection between the Domain Proxy and the SAS. The Domain Proxy receives heartbeat response information sent by the spectrum access system SAS, the heartbeat response carries a signal transmission timeout time (universal time), before the signal transmission timeout time, signal transmission of the CBSD conforms to spectrum authorization of the SAS, and of course, the heartbeat response also carries other parameters, such as new authorization timeout time, heartbeat period and the like.
Step S20, acquiring a time parameter of the wireless signal transmitting equipment CBSD, and acquiring a broken link maintaining time according to the time parameter and the heartbeat response information, wherein the broken link maintaining time is a time length for which the CBSD can continue to transmit the wireless signal when sensing that the communication with the Proxy server Domain Proxy is interrupted.
In this embodiment, after receiving the heartbeat response information sent by the spectrum access system SAS, the Domain Proxy acquires a time parameter of the CBSD, and acquires a link breaking maintenance time according to the time parameter and the heartbeat response information, where the link breaking maintenance time is a duration during which the CBSD can continue to transmit a wireless signal when sensing that communication with the Domain Proxy is interrupted.
In order to reasonably allocate the signal transmission timeout period to the CBSD, the present embodiment proposes a new concept: the chain break maintenance time, i.e., the time period during which the CBSD can continue to transmit wireless signals when it senses an interruption in communication with the Domain Proxy. The purpose of setting the chain breakage maintaining time is as follows: on the premise of not violating the signal transmission expiration time of SAS authorization, when the communication between the Domain Proxy and the CBSD is interrupted, the CBSD can continue to transmit wireless signals according to the time without immediately stopping signal transmission, so that the service exit time of the CBSD is shortened.
The description is given with a CBSD device under EMS of Domain Proxy. First, the Domain Proxy acquires the time parameter of the CBSD through the EMS, where the time parameter is determined by the reaction time of the hardware and software of the CBSD itself, such as interrupt sensing time, stop signal transmission time, and the like. After the time parameter of the CBSD is obtained, the Domain Proxy obtains the chain break maintaining time according to the time parameter of the CBSD and the previously received heartbeat response information, specifically, the Domain Proxy obtains the chain break maintaining time by calculating each parameter value included in the heartbeat response information and the obtained time parameter value of the CBSD according to a preset algorithm, and according to the obtained different parameter values, different preset algorithms can be set, and flexible setting can be performed in specific implementation.
And step S30, configuring the chain breakage maintaining time to the CBSD when setting the frequency spectrum parameters.
In this embodiment, when the Domain Proxy sets a spectrum parameter, the obtained chain breakage holding time is configured to the CBSD.
In the process of setting the spectrum parameters, the Domain Proxy synchronizes the broken link maintaining time to the CBSD. Specifically, the Domain Proxy may configure the disconnection maintaining time to a timer in the CBSD, when the CBSD senses that the communication between the CBSD and the Domain Proxy is interrupted, the CBSD does not immediately stop signal transmission but starts the timer, the timing time is the disconnection maintaining time, and if the timer times out, the CBSD stops signal transmission; if the link is recovered normally before the timer is overtime, namely the CBSD detects that the link is recovered with the EMS, or receives a notification of the recovery of the link between the EMS and the Domain Proxy, the broken link maintaining timer is killed, the CBSD immediately receives a new message of setting the spectrum parameters from the Domain Proxy, and at the moment, the CBSD carries out corresponding processing according to the message indication.
In this embodiment, the Domain Proxy receives heartbeat response information sent by the spectrum access system SAS; acquiring a time parameter of a wireless signal transmitting device CBSD, and acquiring a broken link maintaining time according to the time parameter and the heartbeat response information, wherein the broken link maintaining time is the time length for which the CBSD can continue to transmit wireless signals when sensing that the communication with a Proxy server Domain Proxy is interrupted; and when setting the spectrum parameters, configuring the broken link maintaining time to the CBSD. The embodiment provides a new concept: the method comprises the steps of converting signal transmission overdue time carried by heartbeat response into broken link maintaining time when the Domain Proxy receives the heartbeat response of the SAS every time, and configuring the broken link maintaining time to the CBSD only when spectrum parameters are set, so that the message interaction times between the Domain Proxy and the EMS/CBSD are reduced. The embodiment can reduce the number of message interaction between the Domain Proxy and the EMS/CBSD, and reduce the service quitting time of the CBSD when the communication is unstable.
Further, referring to fig. 3, fig. 3 is a diagram illustrating a second embodiment T of the method for configuring a time for maintaining a broken link according to the present invention remain Schematic diagram of the calculation process. The step of obtaining the chain break maintaining time according to the transmission parameter and the heartbeat response information may include:
step S21, judging t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Whether the result is true;
step S22, if yes, responding to the time t according to the heartbeat 0 Signal emission timeout time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stopping the signal transmission time T shut Calculating the chain breakage maintaining time T remain Wherein:
T remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut )；
step S23, if not, taking T remain ＝0。
In this embodiment, the heartbeat response information sent by the SAS received by the Domain Proxy includes: response time t 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration The acquired time parameters of the CBSD include: interrupt aware time T link Stopping the signal transmission time T shut 。
First, domain Proxy judges t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If yes, calculating the broken link maintaining time T remain Comprises the following steps:
T remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut ) Formula (one);
if not, taking Tremain =0.
Further, referring to fig. 4, fig. 4 is a diagram illustrating an embodiment of T of the present invention remain Schematic diagram of the calculation of (1).
In this embodiment, if t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Is established, e.g., domain Proxy at t 0 Time, for example, 15 transmitExpireTime 15, 00, heartbeat cycle T heartbeatDuration The interruption sensing time T of the CBSD is 300s and is acquired by the Domain Proxy at the same time link For 60s, stop signal transmission time T shut And 60s, calculating the chain breakage maintaining time according to the formula (one):
T remain ＝(15:10:00-15:00:00)－(300s+60s+60s)＝180s；
correspondingly, the Domain Proxy sends out a next heartbeat request according to the heartbeat cycle, namely the next heartbeat request time is as follows: t is t 0 +T heartbeatDuration ＝15:00:00+300s＝15:05:00。
If t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If not, for example, the signal transmission timeout time carried by the heartbeat response is changed to 15 transmitExpireTime –t 0 <T heartbeatDuration +T link +T shut Taking T remain ＝0；
Accordingly, the Domain Proxy needs to send out the next heartbeat request before the heartbeat cycle, for example, the next heartbeat request may be: t is t transmitExpireTime –T link –T shut = 06-60 s-60s =15, to ensure that the CBSD stops signal transmission before the signal transmission timeout time so as not to violate the SAS grant.
It should be noted that, due to a network switch failure or a software operation failure, communication interruption may occur between the CBSD and the Domain Proxy, including chain breaking between the CBSD and the EMS, chain breaking between the Domain Proxy and the EMS, and the like. Setting T remain The principle that can ensure that the CBSD does not violate the SAS grant signaling timeout is that: in the worst case, where CBSD and Domain Proxy communication is interrupted and not restored when the next heartbeat process is performed, CBSD will be at t 0 +T heartbeatDuration +T link +T remain +T shut And the signal transmission is stopped at the moment, namely the signal transmission overdue moment, so that the SAS authorization cannot be violated.
Further, since the chain break maintaining time needs to be calculated every time the Domain Proxy receives the heartbeat response, the T obtained by calculating the heartbeat response twice is avoided remain There are minor differences that result in the need to reconfigure T for a Domain Proxy remain After the step S22, the method may further include:
step S24, according to the T obtained by calculation remain And acquiring the mapping value of the broken link maintaining time according to a preset rule.
Step S30 may now be replaced by:
and S31, when setting the spectrum parameters, configuring the mapping value of the broken link maintaining time to the CBSD.
In particular, as an embodiment, domain Proxy may map T to T remain Discretization, i.e. the "chain-breaking hold time" set to CBSD is f (T) remain ) F denotes a mapping function, the mapping value f (T) remain ) Must not be greater than T remain . For example, f (T) can be taken remain )＝[T remain /M]* M, wherein [ T remain /M]Denotes rounding down, in particular, [ T ] when M =60 remain /M]It means the number of minutes rounded down, e.g. f (70) = [70/60 =]*60=60. And after the mapping value of the broken link maintaining time is obtained, the Domain Proxy configures the mapping value of the broken link maintaining time to the CBSD when setting the spectrum parameters.
In this embodiment, the Domain Proxy receives heartbeat response information sent by the spectrum access system SAS, where the heartbeat response information includes a heartbeat response time t 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration (ii) a Obtaining a time parameter of a wireless signal transmitting device CBSD, the time parameter comprising an interrupt perception time T link Stopping the signal transmission time T shut (ii) a Judging t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Whether the result is true or not; if so, then according toThe heartbeat response time t 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stopping the signal transmission time T shut Calculating the chain breakage maintaining time T remain Comprises the following steps: t is remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut ) (ii) a If not, taking T remain And =0. The chain breakage maintaining time obtained by calculation in the embodiment can not only ensure that the CBSD does not violate the signal transmission overdue time authorized by the SAS, but also fully utilize the signal transmission overdue time authorized by the SAS, so that when the communication between the CBSD and the Domain Proxy is interrupted, the signal transmission time of the CBSD can be prolonged to the greatest extent, and the service quitting time of the CBSD when the communication is unstable is reduced.
Further, referring to fig. 5, fig. 5 is a flowchart illustrating a third embodiment of the method for configuring the chain break holding time according to the present invention. Before the step S30, the method may further include:
and S40, acquiring the frequency spectrum allocation state of the CBSD.
And S50, respectively comparing the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD with the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD when the heartbeat response is received last time.
And step S60, if the frequency spectrum distribution state or the broken link maintaining time of the CBSD is changed, starting a frequency spectrum parameter setting function.
In this embodiment, when setting the spectrum parameter, the Domain Proxy configures the chain breakage maintaining time before the CBSD, if the link connection is normal, the Domain Proxy may acquire the spectrum allocation state of the CBSD, then compare the spectrum allocation state and the acquired chain breakage maintaining time with the spectrum allocation state of the CBSD and the acquired chain breakage maintaining time when receiving the heartbeat response last time, respectively, and if the spectrum allocation state or the chain breakage maintaining time of the CBSD changes, start the function of setting the spectrum parameter.
In the two previous heartbeat response processes, the possible situations that the spectrum allocation state of the CBSD changes are as follows: when the spectrum allocation state of the CBSD changes, the Domain Proxy starts a function of setting spectrum parameters, so as to configure new SAS authorized spectrum parameters to the CBSD and synchronize the acquired broken link maintaining time to the CBSD. Because the heartbeat response information received by two heartbeat responses may be different, the chain break maintaining time acquired by the Domain Proxy according to the heartbeat response information may be different, and when the chain break maintaining time changes, the Domain Proxy should also start the function of setting the spectrum parameter, so as to synchronize the new chain break maintaining time to the CBSD, so that the CBSD does not violate SAS authorization at any time.
In this embodiment, when setting the spectrum parameters, the Domain Proxy configures the broken link maintaining time to the CBSD, and if the link connection is normal, the Domain Proxy acquires the spectrum allocation state of the CBSD; respectively comparing the frequency spectrum distribution state of the CBSD and the acquired chain breakage maintaining time with the frequency spectrum distribution state of the CBSD and the acquired chain breakage maintaining time when the heartbeat response is received at the previous time; and if the frequency spectrum distribution state or the chain breakage maintaining time of the CBSD is changed, starting a frequency spectrum parameter setting function. In the embodiment, the possible situation of setting the spectrum parameters is considered, and under the normal communication situation, through the process of setting the spectrum parameters initiated by the Domain Proxy, the newly acquired broken link maintaining time can be configured to the CBSD, and the CBSD signal transmission can be ensured not to violate SAS authorization at any time.
Further, referring to fig. 6, fig. 6 is a flowchart illustrating a method for configuring a time for maintaining a broken link according to a fourth embodiment of the present invention. Before the step S30, the method may further include:
step S70, when the communication between the Domain Proxy and the CBSD is interrupted, detecting whether the communication between the Domain Proxy and the CBSD is recovered;
and step S80, if yes, starting a function of setting the frequency spectrum parameters.
In this embodiment, when the Domain Proxy sets the spectrum parameters, before the chain-breaking maintaining time is configured to the CBSD, if the link has been interrupted by communication, the Domain Proxy detects whether the Domain Proxy and the CBSD resume communication in real time, and if the Domain Proxy and the CBSD resume communication, the Domain Proxy immediately starts a spectrum parameter setting function to configure the spectrum parameters authorized by the SAS to the CBSD.
It should be noted that, a plurality of CBSDs may be set under the EMS, and if the Domain Proxy and the EMS are disconnected, when the Domain Proxy senses that the link between itself and the EMS is restored, a process of "setting spectrum parameters" is immediately initiated to all CBSDs under the EMS; if the EMS and the CBSD are disconnected, when the Domain Proxy senses that the EMS and a certain CBSD link are recovered, a process of setting spectrum parameters is immediately initiated to the CBSD, so that the signal transmission of each CBSD does not violate SAS authorization.
In this embodiment, when setting the spectrum parameters, the Domain Proxy configures the broken link maintaining time to the CBSD, and if the link has been interrupted by communication, detects whether the Domain Proxy and the CBSD resume communication; and if so, starting a function of setting the frequency spectrum parameters. The method and the device consider the possible situation of setting the spectrum parameters, and can not only configure the latest acquired broken link maintaining time to the CBSD, but also ensure that the transmission of the CBSD signal does not violate SAS authorization at any time through the process of setting the spectrum parameters initiated by the Domain Proxy under the condition of communication interruption.
The invention also provides a device for configuring the broken link maintaining time.
Referring to fig. 7, fig. 7 is a functional block diagram of a configuration apparatus of a chain break holding time according to a first embodiment of the present invention. The device comprises:
a receiving module 10, configured to receive heartbeat response information sent by a spectrum access system SAS;
in this embodiment, the receiving module 10 sends a heartbeat request to the SAS at intervals and receives a heartbeat response message returned by the SAS, so as to maintain a long connection between the Domain Proxy and the SAS. The receiving module 10 receives heartbeat response information sent by the spectrum access system SAS, where the heartbeat response carries a signal transmission timeout period (world universal time), and before the signal transmission timeout period, signal transmissions of the CBSD all conform to spectrum authorization of the SAS, and of course, the heartbeat response also carries other parameters, such as a new authorization timeout period, a heartbeat cycle, and the like.
A first obtaining module 20, configured to obtain a time parameter of a wireless signal transmitting device CBSD, and obtain a chain break maintaining time according to the time parameter and the heartbeat response information, where the chain break maintaining time is a time duration during which the CBSD can continue to transmit a wireless signal when sensing that communication with a Proxy server Domain Proxy is interrupted;
in this embodiment, after the receiving module 10 receives the heartbeat response information sent by the spectrum access system SAS, the first obtaining module 20 obtains a time parameter of the wireless signal transmitting device CBSD, and obtains a link breaking maintaining time according to the time parameter and the heartbeat response information, where the link breaking maintaining time is a time length during which the CBSD can continue to transmit a wireless signal when sensing that communication with the Proxy server Domain Proxy is interrupted.
In order to reasonably allocate the signal transmission timeout period to the CBSD, the present embodiment proposes a new concept: the chain break maintenance time, i.e., the time period during which the CBSD can continue to transmit wireless signals when it senses an interruption in communication with the Domain Proxy. The purpose of setting the chain breakage maintaining time is as follows: on the premise of not violating the signal transmission timeout authorized by the SAS, when the communication between the Domain Proxy and the CBSD is interrupted, the CBSD can continue to transmit wireless signals according to the time without immediately stopping signal transmission, so that the time for exiting the service of the CBSD is shortened.
The description is given with a CBSD device under EMS of Domain Proxy. First, the first obtaining module 20 obtains, through the EMS, time parameters of the CBSD, which are determined by reaction times of hardware and software of the CBSD itself, and may include, for example, interrupt sensing time, stop signal transmission time, and the like. After acquiring the time parameter of the CBSD, the first acquiring module 20 acquires the chain break maintaining time according to the time parameter of the CBSD and the previously received heartbeat response information, specifically, the first obtaining module 20 may calculate the chain break maintaining time according to a preset algorithm through each parameter value included in the heartbeat response information and the obtained time parameter value of the CBSD, and may set different preset algorithms according to different obtained parameter values, which may be flexibly set in specific implementation.
And a configuration module 30, configured to configure the chain breakage holding time to the CBSD when setting the spectrum parameter.
In this embodiment, when setting the spectrum parameter, the configuration module 30 configures the acquired chain scission maintaining time to the CBSD.
In the process of setting the spectrum parameters, the Domain Proxy synchronizes the broken link maintaining time to the CBSD. Specifically, the configuration module 30 may configure the disconnection maintaining time to a timer in the CBSD, when the CBSD senses that the communication between the CBSD and the Domain Proxy is interrupted, the CBSD does not immediately stop signal transmission, but starts the timer, where the timing time is the disconnection maintaining time, and if the timer is out of time and the link has not recovered to normal, the CBSD stops signal transmission; if the link is recovered normally before the timer is overtime, namely the CBSD detects that the link is recovered with the EMS, or receives a notification of the recovery of the link between the EMS and the Domain Proxy, the broken link maintaining timer is killed, the CBSD immediately receives a new message of setting the spectrum parameters from the Domain Proxy, and at the moment, the CBSD carries out corresponding processing according to the message indication.
In this embodiment, the receiving module 10 receives heartbeat response information sent by the spectrum access system SAS; the first obtaining module 20 obtains a time parameter of a wireless signal transmitting device CBSD, and obtains a chain break maintaining time according to the time parameter and the heartbeat response information, wherein the chain break maintaining time is a time length during which the CBSD can continue to transmit a wireless signal when sensing that communication with a Proxy server Domain Proxy is interrupted; when setting the spectrum parameters, the configuration module 30 configures the break-chain maintaining time to the CBSD. The embodiment provides a new concept: the method comprises the steps of converting signal transmission overdue time carried by heartbeat response into broken link maintaining time when the Domain Proxy receives the heartbeat response of the SAS every time, and configuring the broken link maintaining time to the CBSD only when spectrum parameters are set, so that the message interaction times between the Domain Proxy and the EMS/CBSD are reduced. The embodiment can reduce the number of message interaction between the Domain Proxy and the EMS/CBSD, and reduce the service quitting time of the CBSD when the communication is unstable.
Further, referring to fig. 8, fig. 8 is a schematic diagram of a detailed functional module of the first obtaining module in fig. 7. The first obtaining module 20 may include:
a judging unit 21 for judging t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Whether the result is true or not;
a calculation unit 22 for if t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If yes, responding to the time t according to the heartbeat 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stopping the signal transmission time T shut Calculating the chain breakage maintaining time T remain Wherein:
T remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut )；
if t is transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If not, taking T remain ＝0。
In this embodiment, the heartbeat response information sent by the SAS and received by the receiving module 10 includes: response time t 0 Signal emission timeout time t transmitExpireTime Heart cycle T heartbeatDuration The acquired time parameters of the CBSD include: interrupt aware time T link Stopping the signal transmission time T shut 。
First, the judgment unit 21 judges t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If the determination is true, if so,the calculation unit 22 calculates the chain break maintenance time T remain Comprises the following steps:
T remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut ) Formula (one);
if not, the calculation unit 22 takes Tremain =0.
Further, referring to fig. 4, fig. 4 is a diagram illustrating T in an embodiment of the present invention remain Schematic diagram of the calculation of (1).
In this embodiment, if the determining unit 21 determines t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Is established, e.g., domain Proxy at t 0 Time, for example, 15 transmitExpireTime 15, 00, heartbeat cycle T heartbeatDuration The time T is 300s, and the interruption sensing time T of the CBSD is acquired by the Domain Proxy at the same time link For 60s, stop signal transmission time T shut The time is 60s, the calculating unit 22 calculates the chain breakage maintaining time according to the formula (one):
T remain ＝(15:10:00-15:00:00)－(300s+60s+60s)＝180s；
correspondingly, the Domain Proxy sends out a next heartbeat request according to the heartbeat cycle, namely the next heartbeat request time is as follows: t is t 0 +T heartbeatDuration ＝15:00:00+300s＝15:05:00。
If the determination unit 21 determines t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If not, for example, the signal transmission timeout time carried by the heartbeat response is changed to 15 transmitExpireTime –t 0 <T heartbeatDuration +T link +T shut The computing unit 22 takes T remain ＝0；
Accordingly, the Domain Proxy needs to send out the next heartbeat request before the heartbeat cycle, for example, the next heartbeat request time may be: t is t transmitExpireTime –T link –T shut = 06-60 s-60s =15, to ensure that the CBSD stops signal transmission before the signal transmission timeout time so as not to violate the SAS grant.
It should be noted that, due to a network switch failure or a software operation failure, communication interruption may occur between the CBSD and the Domain Proxy, including chain breaking between the CBSD and the EMS, chain breaking between the Domain Proxy and the EMS, and the like. Setting T remain The principle that can ensure that the CBSD does not violate the SAS grant signal transmission timeout is: in the worst case, where CBSD and Domain Proxy communication is interrupted and not restored when the next heartbeat process is performed, CBSD will be at t 0 +T heartbeatDuration +T link +T remain +T shut And the signal transmission is stopped at the moment, namely the signal transmission overdue moment, so that the SAS authorization is not violated.
Further, referring to fig. 9, fig. 9 is a schematic diagram of another detailed functional module of the first obtaining module in fig. 7, where the first obtaining module may further include:
an obtaining unit 24 for obtaining T according to the calculation remain Acquiring a mapping value of the broken link maintaining time according to a preset rule;
the configuration module 30 is further configured to configure the mapping value of the broken link maintaining time to the CBSD when setting the spectrum parameter.
Since the chain break maintaining time needs to be calculated every time the Domain Proxy receives the heartbeat response, the T obtained by calculating the heartbeat response twice is avoided remain There are minor differences that result in the need to reconfigure T for a Domain Proxy remain As an embodiment, the obtaining unit 24 may obtain T remain Discretization, i.e. the "chain-breaking hold time" set to CBSD is f (T) remain ) F denotes a mapping function, the mapping value f (T) remain ) Must not be greater than T remain . For example, f (T) can be taken remain )＝[T remain /M]* M, wherein [ T remain /M]Denotes rounding down, in particular, [ T ] when M =60 remain /M]It means the number of minutes rounded down, e.g. f (70) = [70/60 =]*60=60. After acquiring the mapping value of the broken link maintaining time, the Domain Proxy acquires the mapping value of the broken link maintaining timeAnd when setting the spectrum parameters, configuring the mapping value of the broken link maintaining time to the CBSD.
In this embodiment, the receiving module 10 receives heartbeat response information sent by the spectrum access system SAS, where the heartbeat response information includes a heartbeat response time t 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration (ii) a The first acquisition module 20 acquires a time parameter of the wireless signal transmitting device CBSD, the time parameter including an interrupt perception time T link Stopping the signal transmission time T shut (ii) a The judgment unit 21 judges t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Whether the result is true or not; if yes, the calculating unit 22 responds to the time t according to the heartbeat 0 Signal emission timeout time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stopping the signal transmission time T shut Calculating the chain breakage maintaining time T remain Comprises the following steps: t is remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut ) (ii) a If not, the computing unit 22 takes T remain And =0. The chain breakage maintaining time obtained by calculation in the embodiment can not only ensure that the CBSD does not violate the signal transmission timeout time authorized by the SAS, but also fully utilize the signal transmission timeout authorized by the SAS, so that when communication between the CBSD and the Domain Proxy is interrupted, the signal transmission time of the CBSD can be prolonged to the greatest extent, and the service quitting time of the CBSD when the communication is unstable is reduced.
Further, referring to fig. 10, fig. 10 is a functional module diagram of a configuration apparatus for maintaining time for a broken link according to a second embodiment of the present invention. Based on the embodiment shown in fig. 7, the apparatus may further include:
a second obtaining module 40, configured to obtain a spectrum allocation state of the CBSD;
a comparing module 50, configured to compare the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD with the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD when the heartbeat response was received last time, respectively;
a first enabling module 60, configured to enable a function of setting spectrum parameters if a spectrum allocation state or a chain break maintaining time of the CBSD changes.
In this embodiment, when the Domain Proxy sets the spectrum parameter, before the chain breakage maintaining time is configured to the CBSD, if the link connection is normal, the second obtaining module 40 may obtain the spectrum allocation state of the CBSD, then the comparing module 50 compares the spectrum allocation state and the obtained chain breakage maintaining time with the spectrum allocation state of the CBSD and the obtained chain breakage maintaining time when the heartbeat response was received last time, respectively, and if the spectrum allocation state or the chain breakage maintaining time of the CBSD changes, the first enabling module 60 enables the function of setting the spectrum parameter.
In the two previous heartbeat response processes, the possible situations that the spectrum allocation state of the CBSD changes are as follows: when the spectrum allocation state of the CBSD changes, the Domain Proxy starts a function of setting spectrum parameters, so as to configure new SAS authorized spectrum parameters to the CBSD and synchronize the acquired broken link maintaining time to the CBSD. Because heartbeat response information received by two heartbeat responses may be different, the chain-breaking maintaining time acquired by the Domain Proxy according to the heartbeat response information may be different, and when the chain-breaking maintaining time changes, the Domain Proxy also starts a function of setting spectrum parameters so as to synchronize the new chain-breaking maintaining time to the CBSD, so that the CBSD does not violate SAS authorization at any time.
In this embodiment, when the Domain Proxy sets the spectrum parameters, before the chain breakage maintaining time is configured to the CBSD, if the link connection is normal, the second obtaining module 40 obtains the spectrum allocation state of the CBSD; the comparing module 50 compares the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD with the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD when receiving the heartbeat response last time respectively; if the spectrum allocation status or the chain break maintaining time of the CBSD changes, the first enabling module 60 enables the function of setting spectrum parameters. In the embodiment, the possible situation of setting the spectrum parameters is considered, and under the normal communication situation, through the process of setting the spectrum parameters initiated by the Domain Proxy, the newly acquired broken link maintaining time can be configured to the CBSD, and the CBSD signal transmission can be ensured not to violate SAS authorization at any time.
Further, referring to fig. 11, fig. 11 is a functional block diagram of a third embodiment of the device for configuring a time for maintaining a broken link according to the present invention. Based on the embodiment shown in fig. 7, the apparatus may further include:
a detecting module 70, configured to detect whether the Domain Proxy and the CBSD resume communication when the communication between the Domain Proxy and the CBSD is interrupted;
a second enabling module 80, configured to enable the function of setting the spectrum parameter if the Domain Proxy resumes communication with the CBSD.
In this embodiment, when the Domain Proxy sets the spectrum parameter, before the chain break maintaining time is configured to the CBSD, if the link has been interrupted by communication, the detecting module 70 detects whether the Domain Proxy and the CBSD resume communication in real time, and if the Domain Proxy and the CBSD resume communication, the second enabling module 80 immediately enables the spectrum parameter setting function to configure the spectrum parameter authorized by the SAS to the CBSD.
It should be noted that, a plurality of CBSDs may be set under the EMS, and if the Domain Proxy is disconnected from the EMS, when the Domain Proxy senses that the link between itself and the EMS is restored, the second enabling module 80 immediately initiates a process of "setting spectrum parameters" to all CBSDs under the EMS; if the EMS and CBSD are disconnected, when the Domain Proxy senses that the EMS and a CBSD link are restored, the second enabling module 80 immediately initiates a process of setting spectrum parameters to the CBSD, thereby ensuring that the signal transmission of each CBSD does not violate SAS authorization.
In this embodiment, when the Domain Proxy sets the spectrum parameter, before the chain break maintaining time is configured to the CBSD, if the link has been interrupted by communication, the detecting module 70 detects whether the Domain Proxy and the CBSD resume communication; if yes, the second enabling module 80 enables the function of setting the spectrum parameters. The method and the device consider the possible situation of setting the spectrum parameters, and can not only configure the latest acquired broken link maintaining time to the CBSD, but also ensure that the transmission of the CBSD signal does not violate SAS authorization at any time through the process of setting the spectrum parameters initiated by the Domain Proxy under the condition of communication interruption.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (8)

1. A method for configuring a time for maintaining a broken link, the method comprising the steps of:
receiving heartbeat response information sent by a frequency Spectrum Access System (SAS);
acquiring a time parameter of a wireless signal transmitting device CBSD, and acquiring a broken link maintaining time according to the time parameter and the heartbeat response information, wherein the broken link maintaining time is the time length for which the CBSD can continue to transmit wireless signals when sensing that the communication with a Proxy server Domain Proxy is interrupted;
when setting frequency spectrum parameters, configuring the broken link maintaining time to the CBSD;
wherein the heartbeat response information comprises a heartbeat response time t 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration The time parameter comprises an interrupt perception time T link Stopping the signal transmission time T shut The step of obtaining the broken link maintaining time according to the time parameter and the heartbeat response information includes:
judging t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Whether the result is true or not;
if yes, responding to the time t according to the heartbeat 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stopping the signal transmission time T shut Calculating the chain breakage maintaining time T remain Wherein:
T remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut )；
if not, taking T remain ＝0。
2. The method of claim 1, wherein said responding to time t according to said heartbeat 0 Signal emission over-period time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stopping the signal transmission time T shut Calculating the chain breakage maintaining time T remain After the step (2), further comprising:
according to the calculated T remain Acquiring a mapping value of the broken link maintaining time according to a preset rule;
the step of configuring the chain breakage maintaining time to the CBSD when setting the spectrum parameters comprises:
and when setting the spectrum parameters, configuring the mapping value of the broken link maintaining time to the CBSD.
3. The method of claim 1, wherein the step of configuring the delinking maintenance time to the CBSD when setting spectral parameters is preceded by the step of:
acquiring the frequency spectrum allocation state of the CBSD;
respectively comparing the frequency spectrum distribution state of the CBSD with the acquired chain breakage maintaining time when the CBSD receives heartbeat response at the previous time;
and if the frequency spectrum distribution state or the chain breakage maintaining time of the CBSD is changed, starting a frequency spectrum parameter setting function.
4. The method of claim 1, wherein the step of configuring the delinking maintenance time to the CBSD while setting spectral parameters is preceded by the step of:
when the communication between the Domain Proxy and the CBSD is interrupted, detecting whether the Domain Proxy and the CBSD resume the communication;
and if so, starting a function of setting the frequency spectrum parameters.
5. An apparatus for configuring a chain-breaking holding time, the apparatus comprising:
the receiving module is used for receiving heartbeat response information sent by a frequency spectrum access system SAS;
the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring a time parameter of the wireless signal transmitting equipment CBSD and acquiring a broken link maintaining time according to the time parameter and the heartbeat response information, and the broken link maintaining time is the time length for which the CBSD can continue to transmit wireless signals when sensing that the communication with a Proxy server Domain Proxy is interrupted;
the configuration module is used for configuring the broken link maintaining time to the CBSD when setting spectrum parameters;
wherein the heartbeat response information includes a heartbeat response time t 0 Signal emission timeout time t transmitExpireTime Heart cycle T heartbeatDuration The time parameter comprises an interrupt perception time T link Stopping the signal transmission time T shut The first obtaining module comprises:
a determination unit for determining t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut Whether the result is true or not;
a computing unit for if t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If yes, responding to the time t according to the heartbeat 0 Signal emission timeout time t transmitExpireTime Heart cycle T heartbeatDuration Interruption sensing time T link Stop the signal transmissionTime of flight T shut Calculating the chain breakage maintaining time T remain Wherein:
T remain ＝(t transmitExpireTime –t 0 )–(T heartbeatDuration +T link +T shut )；
if t transmitExpireTime –t 0 ≧T heartbeatDuration +T link +T shut If not, taking T remain ＝0。
6. The apparatus of claim 5, wherein the first obtaining module further comprises:
an acquisition unit for acquiring T according to the calculation remain Acquiring a mapping value of the broken link maintaining time according to a preset rule;
the configuration module is further configured to configure the mapping value of the broken link maintaining time to the CBSD when setting the spectrum parameter.
7. The apparatus of claim 5, wherein the apparatus further comprises:
a second obtaining module, configured to obtain a spectrum allocation state of the CBSD;
the comparison module is used for respectively comparing the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD with the frequency spectrum allocation state and the acquired chain breakage maintaining time of the CBSD when the heartbeat response is received at the previous time;
and the first enabling module is used for enabling a function of setting spectrum parameters if the spectrum allocation state or the broken link maintaining time of the CBSD is changed.
8. The apparatus of claim 5, wherein the apparatus further comprises:
the detection module is used for detecting whether the Domain Proxy and the CBSD recover communication or not when the communication between the Domain Proxy and the CBSD is interrupted;
and the second enabling module is used for enabling the function of setting the spectrum parameters if the Domain Proxy and the CBSD resume communication.
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