CN103581868B - One kind perceives quiet period collocation method, apparatus and system - Google Patents

Abstract

Quiet period collocation method, apparatus and system are perceived the invention discloses one kind.This method includes：Single frequency network multicast broadcast MBSFN sub-frame is configured to carry and perceives quiet period；Perceived in the perception quiet period；Wherein, the transmission means that the MBSFN sub-frame is used by multimedia broadcast multicast service MBMS sessions.Quiet period configuration device and system are perceived the invention also discloses one kind.Quiet period collocation method, apparatus and system are perceived it is an object of the invention to provide one kind, can be according to current perception demand neatly by some sub-frame configurations into MBSFN sub-frame, and any multimedia broadcast multicast data are not sent in the MBSFN sub-frame, the MBSFN sub-frame is configured to carry and perceives quiet period, and is perceived in the quiet period.

Description

A method, device and system for configuring a perceptual silent period

technical field

The present invention relates to the field of communication technologies, in particular to a method, device and system for configuring a perceptual silent period.

Background technique

The current spectrum usage policy is fixed allocation, that is, the government allocates fixed resources for specific services of specific users, such as television, radio, radar, navigation, etc., all use fixed frequency points, some of which are not used all the time, nor are they everywhere All of them are being used, so there are situations where some frequency points are not fully used in certain time periods and certain geographical locations, especially in the current situation where spectrum resources are tight, resulting in a great waste of spectrum resources. Cognitive Radio (CR) is currently the most promising technology to solve the shortage of spectrum resources. By sensing the wireless spectrum environment, this technology can find those unoccupied frequency bands that appear anytime and anywhere, and do not interfere with the primary user (Primary User, PU, that is, a specific user who uses a fixed frequency point), dynamically accesses these unoccupied frequency bands under the premise of realizing the use of frequency bands in a seamless manner, thereby improving spectrum utilization.

When cognitive radio performs spectrum sensing, it usually adopts the sensing scheme of silent period. The perceptual silent period is to prevent the signal of the secondary system from interfering with the perception. The point, perception duration and perception period are called silent period configurations. In the prior art, the guard period (Guard Period, GP) between the downlink subframe and the uplink subframe in the Time Division Long Term Evolution (TD-LTE) system is often used as the silent period of spectrum sensing, which can Reduce the impact on the TD-LTE system after the introduction of spectrum sensing. However, the silent period of this scheme is short, and useful information of the primary user signal may not be received during the silent period, which may affect the sensing performance; and in order to ensure sufficient sensing time, it is necessary to force the configuration of the guard slot to the maximum value, so Not only the flexibility of TD-LTE system guard slot configuration will be greatly affected, but also the silent period configuration is inflexible and cannot be flexibly configured according to current requirements.

In the prior art, spectrum sensing is also performed by selecting several consecutive subframes to form a long silent period or selecting several discontinuous subframes to form a discrete silent period, but it will greatly affect the continuity of services. impact, and will also affect the work of ordinary LTE user equipment (User Equipment, UE), and cannot be fully compatible with ordinary LTE UEs.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a method, device and system for configuring a perceptual silent period, which can flexibly configure some subframes as Multicast/Broadcast over Single Frequency Network (MBSFN) broadcasts according to current perceptual requirements. ) subframe, and do not send any Multimedia Broadcast and Multicast Service (MBMS) data in the MBSFN subframe, and configure the MBSFN subframe to carry a cognitive silence period.

In order to be compatible with the 3GPP LTE standard, the silent period configuration of the embodiment of the present invention adopts the same process as the MBMS session startup of 3GPP TS36.300, and the silent period adopts the same frame structure as the MBSFN subframe, that is, it is divided into a unicast part and an MBSFN part , where the MBSFN part serves as the perceived silent period.

An embodiment of the present invention provides a method for configuring a perception silent period, the method including:

Configuring the single frequency network multicast broadcast MBSFN subframe to carry a perception silent period;

Perceive during said perceptual silence period;

Wherein, the MBSFN subframe is a transmission mode adopted by a multimedia multicast broadcast service MBMS session.

Wherein, the step of configuring the single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period specifically includes:

receiving the silent period configuration request message sent by the network element;

sending a confirmation message for the quiet period configuration request message to the network element;

Sending the extended first MBMS session start request message to the multimedia multicast broadcast service MBMS coordinating entity MCE, triggering the MCE to send the extended second MBMS session start request message to the evolved base station eNB and providing the first MBMS session start request message The MBMS session requested by the MBMS session initiation request message establishes a radio bearer;

Wherein, the silent period configuration request message includes configuration information for configuring the MBMS session to be silent period aware.

Wherein, the step of configuring the single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period also includes:

receiving the extended first MBMS session start request message sent by the mobility management entity MME;

judging whether the MBMS session requested to be started by the first MBMS session start request message is a perception silent period;

If so, according to the first MBMS session initiation request message, establish a radio bearer for the MBMS session requested to be initiated by the first MBMS session initiation request message.

Wherein, the step of configuring the single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period also includes:

receiving the extended second MBMS session start request message sent by the MCE;

sending a response message to the second MBMS session start request message to the MCE;

According to the second MBMS session initiation request message, configure the MBMS session requested by the second MBMS session initiation request message as a perceived silent period;

Wherein, the second MBMS session initiation request message is sent by the MCE after receiving the extended first MBMS session initiation request message sent by the MME.

Correspondingly, an embodiment of the present invention also provides an apparatus for configuring a perceived silent period, which is applied to an MME, and the apparatus includes:

A receiving module, configured to receive a quiet period configuration request message sent by a network element;

A first sending module, configured to send a confirmation message for the silent period configuration request message to the network element;

The second sending module is configured to send the extended first MBMS session start request message to the MCE, and trigger the MCE to establish a radio bearer for the MBMS session requested by the first MBMS session start request message;

Wherein, the silent period configuration request message includes configuration information for configuring the MBMS session to be silent period aware.

Correspondingly, an embodiment of the present invention also provides an apparatus for configuring a perceived silent period, which is applied to an MCE, and the apparatus includes:

A receiving module, configured to receive the extended first MBMS session start request message sent by the MME;

A judging module, configured to judge whether the MBMS session requested to be started by the first MBMS session start request message is a perceived silent period;

An establishing module, configured to, when the judging module judges that the MBMS session requested by the first MBMS session initiation request message is a perceptual silence period, according to the first MBMS session initiation request message, create an The MBMS session requested by the session initiation request message establishes a radio bearer.

Correspondingly, an embodiment of the present invention also provides a device for configuring a perceived silent period, which is applied to an eNB, and the device includes:

A receiving module, configured to receive the extended second MBMS session start request message sent by the MCE;

A sending module, configured to send a response message to the second MBMS session start request message to the MCE;

A configuration module, configured to configure the MBMS session requested to be started by the MBMS session start request message as a perceived silent period according to the second MBMS session start request message;

A perception module, configured to perform perception during the perception silent period;

Wherein, the second MBMS session initiation request message is sent by the MCE after receiving the extended first MBMS session initiation request message sent by the MME.

Correspondingly, an embodiment of the present invention also provides a system for configuring a perceptual silent period, and the system for configuring a perceptual silent period includes the apparatus for configuring a perceptual silent period provided by the embodiment of the present invention and at least one terminal.

Implementing the embodiment of the present invention has the following beneficial effects:

In the embodiment of the present invention, certain subframes are configured as MBSFN subframes, and no multimedia broadcast multicast data is sent in the MBSFN subframes, and the MBSFN subframes are configured to carry a perceptual silence period. Since the MBSFN subframe is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silent period, the duration of the perceptual silent period is 928 μs, so the silent period is longer, which is good for perception. In addition, the perceived silent period can be flexibly configured according to current requirements, and the modification of the protocol is small when configuring the silent period, and can be backward compatible with common LTE UEs.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a perceptual silent period configuration system provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the perceptual silent period configuration device in FIG. 1;

FIG. 3 is a schematic structural diagram of a second embodiment of the apparatus for configuring a perceptual silent period in FIG. 1;

FIG. 4 is a schematic structural diagram of a third embodiment of the apparatus for configuring a perceptual silent period in FIG. 1;

FIG. 5 is a flow chart of a method for configuring a perceptual silent period provided by an embodiment of the present invention;

FIG. 6 is a flowchart of a first embodiment of configuring a single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period provided by the present invention;

FIG. 7 is a flowchart of a second embodiment of configuring a single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period according to an embodiment of the present invention;

FIG. 8 is a flow chart of a third embodiment of configuring a single frequency network multicast broadcast MBSFN subframe to carry a perceived silence period according to an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to FIG. 1 , which is a schematic structural diagram of a system for configuring a perceptual silence period provided by an embodiment of the present invention. The system includes: perception quiet period configuration apparatus 01-03, at least one terminal 04.

Specifically, the device 01 for configuring the perceived silent period is applied in a mobility management entity (Mobility ManagementEntity, MME);

The apparatus 02 for configuring the perceived silent period is applied in an MBMS coordination entity (Multi-cell/multicast Coordination Entity, MCE);

The apparatus 02 for configuring the perceived silent period is applied in an evolved base station (evolvedNode B, eNB);

The at least one terminal 04 performs data communication with the eNB.

Please refer to FIG. 2 , which is a schematic structural diagram of an apparatus 01 for configuring a perceived silent period in FIG. 1 . The apparatus 01 for configuring the perceived silent period is applied in MME, and includes: a receiving module 011, a first sending module 012, and a second sending module 013, wherein:

The receiving module 011 is configured to receive a silent period configuration request message sent by a network element.

Specifically, the network element includes, but is not limited to: a database, a network manager, or an eNB. Assuming that in the embodiment of the present invention, the network element is an eNB, when the eNB needs to perform spectrum sensing, it sends a silent period configuration request message to the sensing silent period configuration device 01, and the receiving module 011 receives the silent period sent by the eNB. Periodic configuration request message.

Wherein, the silent period configuration request message includes configuration information for configuring the MBMS session to be silent period aware.

The configuration information includes, but is not limited to: silent period offset information, silent period duration information, and silent period period information, wherein:

The silent period offset information is used to indicate the start subframe of the perceived silent period.

Specifically, the silent period offset information indicates from which subframe the subframe is used as the perceptual silent period, that is, the start time of the perceptual silent period.

The silent period duration information is used to indicate the number of subframes of the perceived silent period.

Specifically, the duration information of the silent period indicates the duration of the silent period of perception, and by indicating the number of subframes of the silent period of perception, the duration of spectrum sensing can be controlled.

The silent period period information is used to indicate the spectrum sensing period of the perceived silent period.

Specifically, the silent period period information indicates how often to perform spectrum sensing.

The first sending module 012 is configured to send a confirmation message for the silent period configuration request message to the network element.

Specifically, after the receiving module 011 receives the silent period configuration request message sent by the eNB, the first sending module 012 responds to the eNB by sending a confirmation message for the silent period configuration request message.

The second sending module 013 is configured to send the extended first MBMS session start request message to the MCE, trigger the MCE to send the extended second MBMS session start request message to the evolved base station eNB and provide the The MBMS session requested to be started by the first MBMS session start request message establishes a radio bearer.

Specifically, in the 3rd Generation Partnership Project (The 3rd Generation Partnership Project, 3GPP) technical specification, the MBSFN transmission mode is adopted to support the evolved multimedia broadcast multicast service (EvolvedMultimedia Broadcast and Multicast Service, E-MBMS), and the MBSFN transmission mode is adopted Not only can save frequency resources, improve frequency spectrum utilization, but also improve the receiving performance of MBMS service users at the cell edge. The MBSFN subframe is divided into a unicast part and an MBSFN part. The unicast part is used to transmit downlink L1/L2 (Layer1, Layer 1/Layer2, Layer 2) control channels, including Physical Control Channel (Physical Downlink Control Channel, PDCCH), Physical Control Format Indicator Channel (Physical Control Format Indicator Channel, PCFICF) and a Physical HARQ Indicator Channel (Physical HARQ Indicator Channel, PHICH), and the MBSFN part is used to transmit a Physical Multicast Channel (Physical Multicast Channel, PMCH).

Therefore, after the second sending module 013 sends the extended first MBMS session start request message (MBMS session start request) to the MCE, it can trigger the MCE to send the extended first MBMS session start request message to the evolved base station eNB. The second MBMS session start request message establishes a radio bearer for the MBMS session requested to be started by the first MBMS session start request message, and the MBMS session specifically uses MBSFN subframes for data transmission.

Further, both the extended first MBMS session initiation request message and the second MBMS session initiation request message include a control word and the configuration information;

Wherein, the control word indicates whether the MBMS session requested to be started by the corresponding MBMS session start request message is the perceived silent period.

Specifically, in the 3GPP TS36.300 protocol, the MBMS session start request message includes information such as an IP (Internet Protocol, a protocol for interconnecting networks) multicast address, session attributes, and the minimum waiting time required for the first transmission. In the embodiment of the present invention, it is necessary to extend the MBMS session start request message, specifically adding a control word and the configuration information to the MBMS session start request message.

Wherein, whether the MBMS session requested to start by the MBMS session start request message indicated by the control word is the perceived silent period; the configuration information includes but not limited to: silent period offset information, silent period duration information and silent period information cycle information.

If the MBMS session requested to be started by the MBMS session start request message indicated by the control word is the perceived silent period, the MCE directly establishes a radio bearer for the MBMS session start requested by the MBMS session start request message, and according to The configuration information configures some subframes as the MBSFN subframes used by the MBMS session, and does not send any data in these MBSFN subframes, and uses these MBSFN subframes as the perceptual silence period, so as to realize the control of the perceptual silence period Flexible configuration.

Further, the receiving module 011 is also configured to receive a response message sent by the MCE to the MBMS session start request message.

Specifically, after the second sending module 013 sends the extended first MBMS session start request message to the MCE, the MCE needs to send a response message to the first MBMS session start request message to the MME— - Multimedia Multicast Broadcast Service session start response message (MBMS session start response). The receiving module 011 is also configured to receive a response message sent by the MCE to the MBMS session start request message.

In the embodiment of the present invention, certain subframes are configured as MBSFN subframes, and no multimedia broadcast multicast data is sent in the MBSFN subframes, and the MBSFN subframes are configured to carry a perceptual silence period. Since the MBSFN subframe is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silent period, the duration of the perceptual silent period is 928 μs, so the silent period is longer, which is good for perception. In addition, the perceived silent period can be flexibly configured according to current requirements, and the modification of the protocol is small when configuring the silent period, and can be backward compatible with common LTE UEs.

Please refer to FIG. 3 , which is a schematic structural diagram of the apparatus 02 for configuring the perceived silent period in FIG. 1 . The device 02 for configuring the perceived silent period is applied in the MCE, and includes: a receiving module 021, a judging module 022 and an establishing module 023, wherein:

The receiving module 021 is configured to receive the extended first MBMS session start request message sent by the MME.

Specifically, after the MME sends the extended first MBMS session start request message to the device 02 for configuring the perception silent period, the receiving module 021 receives the extended first MBMS session start request message.

The extended first MBMS session start request message includes control words and configuration information. Wherein, the control word indicates whether the MBMS session requested by the first MBMS session start request message is the perceived silent period; the configuration information is used to configure the MBMS session as the perceived silent period.

The judging module 022 is configured to judge whether the MBMS session requested to be started by the first MBMS session start request message is a perception silent period.

Specifically, the judging module 022 judges the start request requested by the first MBMS session start request message according to the indication of the control word in the first MBMS session start request message, that is, the content of the control word. Whether the MBMS session is aware of the silent period.

Of course, the judging module 022 can also judge whether the MBMS session requested by the first MBMS session start request message is the perceived silent period according to other information, for example, according to whether the first MBMS session start request message includes The configuration information is used for judgment.

The establishing module 023 is configured to, when the judging module judges that the MBMS session requested to be started by the first MBMS session start request message is a perceptual silence period, according to the first MBMS session start request message, for the The MBMS session requested to be started by the first MBMS session start request message establishes a radio bearer.

Specifically, when the judging module 022 judges that the MBMS session requested to be started by the first MBMS session start request message is a perceived silent period, the establishment module 023 then according to the first MBMS session start request message Configuration information, establishing a radio bearer for the MBMS session requested to be started by the first MBMS session start request message, specifically configuring some subframes as MBSFN subframes used by the MBMS session according to the configuration information, and in these The MBSFN subframes do not send any data, and these MBSFN subframes are used as the perceptual silent period, so as to realize flexible configuration of the perceptual silent period.

If the judging module 022 judges that the MBMS session requested by the first MBMS session start request message does not belong to the perceived silent period, since a general MBMS session is dedicated to some services with a large amount of data, it needs to first Checking whether there are enough resources to determine whether to establish a radio bearer for the MBMS session requested by the first MBMS Session Initiation Request message. Here it is reflected that the MBMS session as the perception silent period has priority.

Further, as shown in Figure 3, the establishment module 023 specifically includes:

The first sending unit 0231 is configured to send a response message to the first MBMS session start request message to the MME.

Specifically, after the receiving module 021 receives the extended first MBMS session start request message, the first sending unit 0231 sends a response message to the first MBMS session start request message to the MME .

The second sending unit 0232 is configured to send the extended second MBMS session initiation request message to the eNB, and notify the eNB to configure the MBMS session requested by the second MBMS session initiation request message as the perceived silent period .

Specifically, although the expanded second MBMS session start request message sent by the second sending unit 0232 to the eNB is different from the first MBMS session start request message, it also includes the control word and the configuration information, the second sending unit 0232 notifies the eNB to configure the MBMS session requested to be started by the second MBMS session start request message as the perceived silent period, that is, according to the second MBMS session Start the configuration information in the request message, configure some subframes as the MBSFN subframes used by the MBMS session, and do not send any data in these MBSFN subframes, and use these MBSFN subframes as the perception silent period, so as to realize the Flexible configuration of perceived quiet periods.

Further, the receiving module 021 is further configured to receive a response message sent by the eNB to the second MBMS session start request message.

Specifically, after the second sending unit 0232 sends the second MBMS session start request message to the eNB, the eNB responds to the second MBMS session start request message, and the receiving module 021 further It is used for receiving a response message sent by the eNB to the second MBMS session start request message.

In the embodiment of the present invention, certain subframes are configured as MBSFN subframes, and no multimedia broadcast multicast data is sent in the MBSFN subframes, and the MBSFN subframes are configured to carry a perceptual silence period. Since the MBSFN subframe is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silent period, the duration of the perceptual silent period is 928 μs, so the silent period is longer, which is good for perception. In addition, the perceived silent period can be flexibly configured according to current requirements, and the modification of the protocol is small when configuring the silent period, and can be backward compatible with common LTE UEs.

Please refer to FIG. 4 , which is a schematic structural diagram of the device 03 for configuring the perceptual silent period in FIG. 1 , the device 03 for configuring the perceptual silent period is applied in the eNB, and includes: a receiving module 031 , a sending module 032 , a configuration module 033 and a sensing module 034 ,in:

The receiving module 031 is configured to receive the extended second MBMS session start request message sent by the MCE.

Specifically, the second MBMS session initiation request message is sent by the MCE after receiving the extended first MBMS session initiation request message sent by the MME.

After the MCE sends the extended second MBMS session start request message to the device 03 for configuring the perception silent period, the receiving module 031 receives the extended second MBMS session start request message.

The sending module 032 is configured to send a response message to the second MBMS session start request message to the MCE.

Specifically, after the receiving module 031 receives the extended second MBMS session initiation request message, the sending module 032 sends a response message to the second MBMS session initiation request message to the MCE.

The configuration module 033 is configured to configure, according to the second MBMS session initiation request message, the MBMS session requested to be initiated by the second MBMS session initiation request message as a perceived silent period.

Specifically, the configuration module 033 configures the MBMS session requested to be started by the second MBMS session start request message as the perceived silent period according to the configuration information in the second MBMS session start request message.

The configuration information includes, but is not limited to: silent period offset information, silent period duration information, and silent period period information, wherein:

The silent period offset information is used to indicate the start subframe of the perceived silent period.

Specifically, the silent period offset information indicates from which subframe the subframe is used as the perceptual silent period, that is, the start time of the perceptual silent period.

The silent period duration information is used to indicate the number of subframes of the perceived silent period.

Specifically, the duration information of the silent period indicates the duration of the silent period of perception, and by indicating the number of subframes of the silent period of perception, the duration of spectrum sensing can be controlled.

The silent period period information is used to indicate the spectrum sensing period of the perceived silent period.

Specifically, the silent period period information indicates how often to perform spectrum sensing.

The configuration module 033 configures some subframes as the MBSFN subframes used by the MBMS session according to the configuration information, and does not send any data in these MBSFN subframes, and uses these MBSFN subframes as the perception silent period, so that Realize the flexible configuration of the perceived silence period. At the same time, the length of the perception silent period can be flexibly controlled so as to achieve a good spectrum perception effect.

The perception module 034 is configured to perform perception during the perception silence period.

Specifically, the sensing module 034 performs sensing during the sensing silent period, so as to discover unoccupied frequency bands in the wireless spectrum environment in time.

In the embodiment of the present invention, certain subframes are configured as MBSFN subframes, and no multimedia broadcast multicast data is sent in the MBSFN subframes, and the MBSFN subframes are configured to carry a perceptual silence period. Since the MBSFN subframe is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silent period, the duration of the perceptual silent period is 928 μs, so the silent period is longer, which is good for perception. In addition, the perceived silent period can be flexibly configured according to current requirements, and the modification of the protocol is small when configuring the silent period, and can be backward compatible with common LTE UEs.

Please refer to FIG. 5 , which is a flow chart of a method for configuring a perceptual silent period provided by an embodiment of the present invention. The method includes:

S101. Configure a single frequency network multicast broadcast MBSFN subframe to carry a perceived silence period.

Specifically, the MBSFN subframe is a transmission mode adopted by a multimedia multicast broadcast service MBMS session. In the 3GPP technical specification, the MBSFN transmission mode is adopted to support E-MBMS. Using the MBSFN transmission mode can not only save frequency resources, improve spectrum utilization, but also improve the reception performance of MBMS service users at the cell edge. The MBSFN subframe is divided into a unicast part and an MBSFN part. The unicast part is used to transmit downlink L1/L2 control channels, including PDCCH, PCFICF and PHICH, and the MBSFN part is used to transmit PMCH.

The single frequency network multicast broadcast MBSFN subframe is configured as a silent period of perception, and the advantages of flexible configuration and time controllable in the transmission mode of the MBSFN subframe can be used for perception during the silent period of perception.

The S101 specifically includes the following steps:

Step 1: Receive the silent period configuration request message sent by the network element;

Step 2: sending an acknowledgment message for the silent period configuration request message to the network element;

Step 3: Send the extended first MBMS session start request message to the MBMS coordinating entity MCE, trigger the MCE to send the extended second MBMS session start request message to the evolved base station eNB and provide the first MBMS session start request message The MBMS session requested to be started by the start request message establishes a radio bearer;

Step 4: receiving the extended first MBMS session start request message sent by the mobility management entity MME;

Step 5: judging whether the MBMS session requested to be started by the first MBMS session start request message is a perception silent period;

Step 6: Send a response message to the first MBMS session start request message to the MME:

Step 7: sending the extended second MBMS session start request message to the eNB, informing the eNB to configure the MBMS session requested by the second MBMS session start request message as the perceived silent period;

Step 8: receiving the extended second MBMS session start request message sent by the MCE;

Step 9: sending a response message to the second MBMS session start request message to the MCE;

Step 10: According to the second MBMS session initiation request message, configure the MBMS session requested by the second MBMS session initiation request message as a perceived silent period;

Specifically, the above steps 1-10 will be described in detail below.

S102. Perform sensing during the sensing silent period.

Specifically, the device for configuring the silent period of perception performs sensing during the silent period of perception, so as to discover unoccupied frequency bands in the wireless spectrum environment in time.

In the embodiment of the present invention, certain subframes are configured as MBSFN subframes, and no multimedia broadcast multicast data is sent in the MBSFN subframes, and the MBSFN subframes are configured to carry a perceptual silence period. Since the MBSFN subframe is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silent period, the duration of the perceptual silent period is 928 μs, so the silent period is longer, which is good for perception. In addition, the perceived silent period can be flexibly configured according to current requirements, and the modification of the protocol is small when configuring the silent period, and can be backward compatible with common LTE UEs.

Please refer to FIG. 6, which is a flowchart of a first embodiment of configuring a single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period provided by the present invention, the method includes:

S1011. Receive a silent period configuration request message sent by a network element.

Specifically, the network element includes, but is not limited to: a database, a network manager, or an eNB. Assuming that in the embodiment of the present invention, the network element is an eNB, when the eNB needs to perform spectrum sensing, it sends a silent period configuration request message to the MME, and the MME receives the silent period configuration request message sent by the eNB.

Wherein, the silent period configuration request message includes configuration information for configuring the MBMS session to be silent period aware.

The configuration information includes, but is not limited to: silent period offset information, silent period duration information, and silent period period information, wherein:

The silent period offset information is used to indicate the start subframe of the perceived silent period.

Specifically, the silent period offset information indicates from which subframe the subframe is used as the perceptual silent period, that is, the start time of the perceptual silent period.

The silent period duration information is used to indicate the number of subframes of the perceived silent period.

Specifically, the duration information of the silent period indicates the duration of the silent period of perception, and by indicating the number of subframes of the silent period of perception, the duration of spectrum sensing can be controlled.

The silent period period information is used to indicate the spectrum sensing period of the perceived silent period.

Specifically, the silent period period information indicates how often to perform spectrum sensing.

S1012. Send a confirmation message for the silent period configuration request message to the network element.

Specifically, after receiving the silent period configuration request message sent by the eNB, the MME responds to the eNB by sending an acknowledgment message for the silent period configuration request message.

S1013. Send the extended first MBMS session start request message to the MCE, trigger the MCE to send the extended second MBMS session start request message to the evolved base station eNB and be described by the first MBMS session start request message The MBMS session requested to be initiated establishes a radio bearer.

Specifically, in the 3GPP technical specification, the MBSFN transmission mode is used to support E-MBMS. Using the MBSFN transmission mode can not only save frequency resources, improve spectrum utilization, but also improve the reception performance of MBMS service users at the cell edge. The MBSFN subframe is divided into a unicast part and an MBSFN part. The unicast part is used to transmit downlink L1/L2 control channels, including PDCCH, PCFICF and PHICH, and the MBSFN part is used to transmit PMCH.

Further, both the extended first MBMS session initiation request message and the second MBMS session initiation request message include a control word and the configuration information;

Wherein, the control word indicates whether the MBMS session requested to be started by the corresponding MBMS session start request message is the perceived silent period.

Specifically, in the 3GPP TS36.300 protocol, the MBMS session start request message includes information such as an IP multicast address, session attributes, and the minimum waiting time required for the first transmission. In the embodiment of the present invention, it is necessary to extend the MBMS session start request message, specifically adding a control word and the configuration information to the MBMS session start request message.

Wherein, whether the MBMS session requested to start by the MBMS session start request message indicated by the control word is the perceived silent period; the configuration information includes but not limited to: silent period offset information, silent period duration information and silent period information cycle information.

If the MBMS session requested to be started by the MBMS session start request message indicated by the control word is the perceived silent period, the MCE directly establishes a radio bearer for the MBMS session start requested by the MBMS session start request message, and according to The configuration information configures some subframes as the MBSFN subframes used by the MBMS session, and does not send any data in these MBSFN subframes, and uses these MBSFN subframes as the perceptual silence period, so as to realize the control of the perceptual silence period Flexible configuration.

Therefore, after the MME sends the extended first MBMS session start request message to the MBMS coordinating entity MCE, it can trigger the MCE to send the extended second MBMS session start request message to the evolved base station eNB and provide the The MBMS session requested to be started by the MBMS session start request message establishes a radio bearer, and the MBMS session specifically uses MBSFN subframes for data transmission.

In the embodiment of the present invention, certain subframes are configured as MBSFN subframes, and no multimedia broadcast multicast data is sent in the MBSFN subframes, and the MBSFN subframes are configured to carry a perceptual silence period. Since the MBSFN subframe is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silent period, the duration of the perceptual silent period is 928 μs, so the silent period is longer, which is good for perception. In addition, the perceived silent period can be flexibly configured according to current requirements, and the modification of the protocol is small when configuring the silent period, and can be backward compatible with common LTE UEs.

Please refer to FIG. 7 , which is a flowchart of a second embodiment of configuring a single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period provided by the present invention, the method includes:

S1014. Receive the extended first MBMS session start request message sent by the mobility management entity MME.

Specifically, after the MME sends the extended first MBMS session start request message to the MCE, the MCE receives the extended first MBMS session start request message.

The extended first MBMS session start request message includes control words and configuration information. Wherein, the control word indicates whether the MBMS session requested by the first MBMS session start request message is the perceived silent period; the configuration information is used to configure the MBMS session as the perceived silent period.

S1015, judging whether the MBMS session requested by the first MBMS session start request message is a perception silent period, and if so, execute S303.

Specifically, according to the indication of the control word in the first MBMS session start request message, that is, the content of the control word, the MCE judges whether the MBMS session requested to be started by the first MBMS session start request message is is the perceived silent period.

Certainly, the MCE may also judge whether the MBMS session requested to be started by the first MBMS session start request message is the perceived silent period according to other information, for example, according to whether the configuration information is included in the first MBMS session start request message to judge.

If the MCE judges that the MBMS session requested by the first MBMS session start request message does not belong to the perceived silent period, since the general MBMS session is dedicated to some services with a large amount of data, it needs to check whether there are enough resources, so as to determine whether to establish a radio bearer for the MBMS session requested by the first MBMS session start request message. Here it is reflected that the MBMS session as the perception silent period has priority.

S1016. Send a response message to the first MBMS session start request message to the MME.

Specifically, after receiving the extended MBMS session start request message, the MCE sends a response message to the first MBMS session start request message to the MME.

S1017. Send the extended second MBMS session start request message to the eNB, and notify the eNB to configure the MBMS session requested by the second MBMS session start request message as the perceived silent period.

Specifically, although the expanded second MBMS session start request message sent by the MCE to the eNB includes different contents from the first MBMS session start request message, it also includes the control word and the configuration information The apparatus for configuring the perceived silent period notifies the eNB to configure the MBMS session as the perceived silent period, that is, configure certain subframes as the MBMS session according to the configuration information in the second MBMS session start request message The MBSFN subframes are adopted, and no data is sent in these MBSFN subframes, and these MBSFN subframes are used as the perceptual silent period, so as to realize flexible configuration of the perceptual silent period.

In the embodiment of the present invention, certain subframes are configured as MBSFN subframes, and no multimedia broadcast multicast data is sent in the MBSFN subframes, and the MBSFN subframes are configured to carry a perceptual silence period. Since the MBSFN subframe is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silent period, the duration of the perceptual silent period is 928 μs, so the silent period is longer, which is good for perception. In addition, the perceived silent period can be flexibly configured according to current requirements, and the modification of the protocol is small when configuring the silent period, and can be backward compatible with common LTE UEs.

Please refer to FIG. 8 , which is a flow chart of a fourth embodiment of a method for configuring a perceptual silence period provided by an embodiment of the present invention. The methods include:

S1018. Receive the extended second MBMS session initiation request message sent by the MCE, where the second MBMS session initiation request message is the extended first MBMS session initiation request message sent by the MME received by the MCE sent after.

Specifically, the second MBMS session initiation request message is sent by the MCE after receiving the extended first MBMS session initiation request message sent by the MME. After the MCE sends the extended second MBMS session start request message to the eNB, the eNB receives the extended MBMS session start request message.

S1019. Send a response message to the second MBMS session start request message to the MCE.

Specifically, after receiving the extended second MBMS session initiation request message, the eNB sends a response message to the second MBMS session initiation request message to the MCE.

S10110. According to the second MBMS session start request message, configure the MBMS session requested to be started by the second MBMS session start request message as a perceived silent period.

Specifically, the eNB configures the MBMS session requested to be started by the second MBMS session start request message as the perceived silent period according to the configuration information in the second MBMS session start request message.

The configuration information includes, but is not limited to: silent period offset information, silent period duration information, and silent period period information, wherein:

The silent period offset information is used to indicate the start subframe of the perceived silent period.

Specifically, the silent period offset information indicates from which subframe the subframe is used as the perceptual silent period, that is, the start time of the perceptual silent period.

The silent period duration information is used to indicate the number of subframes of the perceived silent period.

Specifically, the duration information of the silent period indicates the duration of the silent period of perception, and by indicating the number of subframes of the silent period of perception, the duration of spectrum sensing can be controlled.

The silent period period information is used to indicate the spectrum sensing period of the perceived silent period.

Specifically, the silent period period information indicates how often to perform spectrum sensing.

The eNB configures some subframes as MBSFN subframes used by the MBMS session according to the configuration information, and does not send any data in these MBSFN subframes, and uses these MBSFN subframes as the perceptual silence period, so as to realize the perceptual silence period of flexible configuration. At the same time, the length of the perception silent period can be flexibly controlled so as to achieve a good spectrum perception effect.

In the embodiment of the present invention, certain subframes are configured as MBSFN subframes, and no multimedia broadcast multicast data is sent in the MBSFN subframes, and the MBSFN subframes are configured to carry a perceptual silence period. Since the MBSFN subframe is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silent period, the duration of the perceptual silent period is 928 μs, so the silent period is longer, which is good for perception. In addition, the perceived silent period can be flexibly configured according to current requirements, and the modification of the protocol is small when configuring the silent period, and can be backward compatible with common LTE UEs.

Through the above description of the implementation manners, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary hardware platform, and of course can also be implemented entirely by hardware. Based on this understanding, all or part of the contribution made by the technical solution of the present invention to the background technology can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, magnetic disks, optical disks, etc. , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments or some parts of the embodiments of the present invention.

What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot limit the scope of rights of the present invention with this. Those of ordinary skill in the art can understand the whole or part of the process of realizing the above-mentioned embodiment, and make according to the claims of the present invention The equivalent changes still belong to the scope covered by the invention.

Claims (25)

1. A method for perceptual silent period configuration, characterized in that, comprising: Configuring the single frequency network multicast broadcast MBSFN subframe to carry a perception silent period; Perceive during said perceptual silence period; Wherein, the MBSFN subframe is a transmission mode adopted by a multimedia multicast broadcast service MBMS session; Wherein, the step of configuring the single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period specifically includes: receiving the silent period configuration request message sent by the network element; sending a confirmation message for the quiet period configuration request message to the network element; Sending the extended first MBMS session start request message to the MBMS coordinating entity MCE, triggering the MCE to send the extended second MBMS session start request message to the evolved base station eNB and providing the first MBMS session start request message The MBMS session requested to start establishes a radio bearer; Wherein, the silent period configuration request message includes configuration information for configuring the MBMS session to be silent period aware. 2. The method according to claim 1, characterized in that, both the expanded first MBMS session start request message and the second MBMS session start request message include a control word and the configuration information; Wherein, the control word indicates whether the MBMS session requested to be started by the corresponding MBMS session start request message is the perceived silent period. 3. The method according to claim 1, wherein the network element comprises a database or a network manager or the eNB. 4. The method according to claim 1, wherein the configuration information includes silent period offset information, silent period duration information and silent period period information, wherein: The silent period offset information is used to indicate the start subframe of the perceived silent period; The silent period duration information is used to indicate the number of subframes of the perceived silent period; The silent period period information is used to indicate the spectrum sensing period of the perceived silent period. 5. A method for configuring a perceptual silent period, comprising: Configuring the single frequency network multicast broadcast MBSFN subframe to carry a perception silent period; Perceive during said perceptual silence period; Wherein, the MBSFN subframe is a transmission mode adopted by a multimedia multicast broadcast service MBMS session; Wherein, the step of configuring the single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period also includes: receiving the extended first MBMS session start request message sent by the mobility management entity MME; judging whether the MBMS session requested to be started by the first MBMS session start request message is a perception silent period; If so, according to the first MBMS session initiation request message, establish a radio bearer for the MBMS session requested to be initiated by the first MBMS session initiation request message. 6. The method according to claim 5, wherein the extended first MBMS session start request message includes control words and configuration information; Wherein, the control word indicates whether the MBMS session requested to be started by the first MBMS session start request message is the perceived silent period; The configuration information is used to configure the MBMS session as the perceived silent period. 7. The method according to claim 6, wherein the step of judging whether the MBMS session requested to be started by the first MBMS session start request message is a perceived silent period is specifically: According to the indication of the control word in the first MBMS session start request message, or According to whether the configuration information is included in the first MBMS session start request message, Judging whether the MBMS session requested to be started by the first MBMS session start request message is the perceived silent period. 8. The method according to claim 6, characterized in that, according to the first MBMS session start request message, the step of establishing a radio bearer for the MBMS session requested to be started by the first MBMS session start request message, include: sending a response message to the first MBMS session start request message to the MME; Sending an extended second MBMS session start request message to the eNB, notifying the eNB to configure the MBMS session requested by the second MBMS session start request message as the perceived silent period; Wherein, the second MBMS session initiation request message includes the control word and the configuration information. 9. The method according to claim 6, wherein the configuration information includes silent period offset information, silent period duration information and silent period period information, wherein: The silent period offset information is used to indicate the start subframe of the perceived silent period; The silent period duration information is used to indicate the number of subframes of the perceived silent period; The silent period period information is used to indicate the spectrum sensing period of the perceived silent period. 10. A method for configuring a perception silent period, comprising: Configuring the single frequency network multicast broadcast MBSFN subframe to carry a perception silent period; Perceive during said perceptual silence period; Wherein, the MBSFN subframe is a transmission mode adopted by a multimedia multicast broadcast service MBMS session; Wherein, the step of configuring the single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period also includes: receiving the extended second MBMS session start request message sent by the MCE; sending a response message to the second MBMS session start request message to the MCE; According to the second MBMS session initiation request message, configure the MBMS session requested by the second MBMS session initiation request message as a perceived silent period; Wherein, the second MBMS session initiation request message is sent by the MCE after receiving the extended first MBMS session initiation request message sent by the MME. 11. The method according to claim 10, wherein both the extended first MBMS session start request message and the second MBMS session start request message include control words and configuration information; Wherein, the control word indicates whether the MBMS session requested to be started by the corresponding MBMS session start request message is the perceived silent period; The configuration information is used to configure the MBMS session as the perceived silent period. 12. The method according to claim 11, wherein the configuration information includes silent period offset information, silent period duration information and silent period period information, wherein: The silent period offset information is used to indicate the start subframe of the perceived silent period; The silent period duration information is used to indicate the number of subframes of the perceived silent period; The silent period period information is used to indicate the spectrum sensing period of the perceived silent period. 13. A device for configuring a perceptual silent period, applied to MME, characterized in that it comprises: A receiving module, configured to receive a quiet period configuration request message sent by a network element; A first sending module, configured to send a confirmation message for the silent period configuration request message to the network element; The second sending module is configured to send the extended first MBMS session start request message to the MCE, trigger the MCE to send the extended second MBMS session start request message to the evolved base station eNB and provide the first MBMS session start request message The MBMS session requested by the session initiation request message establishes a radio bearer; Wherein, the silent period configuration request message includes configuration information for configuring the MBMS session to be silent period aware. 14. The apparatus according to claim 13, wherein both the extended first MBMS session start request message and the second MBMS session start request message include a control word and the configuration information; Wherein, the control word indicates whether the MBMS session requested to be started by the corresponding MBMS session start request message is the perceived silent period. 15. The apparatus according to claim 13, wherein the receiving module is further configured to receive a response message sent by the MCE to the first MBMS session start request message. 16. The device according to claim 13, wherein the network element comprises a database or a network manager or the eNB. 17. An apparatus for configuring a perceptual silent period, applied in MCE, characterized in that it comprises: A receiving module, configured to receive the extended first MBMS session start request message sent by the MME; A judging module, configured to judge whether the MBMS session requested to be started by the first MBMS session start request message is a perceived silent period; An establishing module, configured to, when the judging module judges that the MBMS session requested by the first MBMS session initiation request message is a perceptual silence period, according to the first MBMS session initiation request message, create an The MBMS session requested by the session initiation request message establishes a radio bearer. 18. The device according to claim 17, the extended first MBMS session start request message includes control words and configuration information; Wherein, the control word indicates whether the MBMS session requested to be started by the first MBMS session start request message is the perceived silent period; The configuration information is used to configure the MBMS session as the perceived silent period. 19. The apparatus of claim 18, wherein: The judging module is specifically based on the indication of the control word in the first MBMS session start request message, or Whether the configuration information is included in the first MBMS session start request message, Judging whether the MBMS session requested to be started by the first MBMS session start request message is the perceived silent period. 20. The device according to claim 18, wherein the establishment module specifically comprises: a first sending unit, configured to send a response message to the first MBMS session start request message to the MME; The second sending unit is configured to send the extended second MBMS session start request message to the eNB, and notify the eNB to configure the MBMS session requested by the second MBMS session start request message as the perceived silent period; Wherein, the second MBMS session initiation request message includes the control word and the configuration information. 21. The apparatus according to claim 20, wherein the receiving module is further configured to receive a response message sent by the eNB to the second MBMS session start request message. 22. A device for configuring a perceived silent period, applied to an eNB, characterized in that it comprises: A receiving module, configured to receive the extended second MBMS session start request message sent by the MCE; A sending module, configured to send a response message to the second MBMS session start request message to the MCE; A configuration module, configured to configure the MBMS session requested to be started by the second MBMS session start request message as a perceived silent period according to the second MBMS session start request message; A perception module, configured to perform perception during the perception silent period; Wherein, the second MBMS session initiation request message is sent by the MCE after receiving the extended first MBMS session initiation request message sent by the MME. 23. The device according to claim 22, wherein the extended first MBMS session start request message and the second MBMS session start request message both include control words and configuration information; Wherein, the control word indicates whether the MBMS session requested to be started by the corresponding MBMS session start request message is the perceived silent period; The configuration information is used to configure the MBMS session as the perceived silent period. 24. The device according to claim 23, wherein the configuration information includes silent period offset information, silent period duration information and silent period period information, wherein: The silent period offset information is used to indicate the start subframe of the perceived silent period; The silent period duration information is used to indicate the number of subframes of the perceived silent period; The silent period period information is used to indicate the spectrum sensing period of the perceived silent period. 25. A system for configuring a perceived silent period, comprising the apparatus for configuring a perceived silent period according to any one of claims 13-24 and at least one terminal.