WO2014012388A1

WO2014012388A1 - Method, device and system for sensing silent period configuration

Info

Publication number: WO2014012388A1
Application number: PCT/CN2013/074616
Authority: WO
Inventors: 郭锐; 龚磊
Original assignee: 华为技术有限公司
Priority date: 2012-07-19
Filing date: 2013-04-24
Publication date: 2014-01-23
Also published as: CN103581868B; CN103581868A

Abstract

Disclosed are a method, device and system for configuration of sensing silent periods. The method comprises the following steps: configuring multicast/broadcast over single frequency network (MBSFN) sub-frames to carry sensing silent periods, and sensing during the sensing silent periods; the MBSFN sub-frames are the transmission mode used by the multimedia broadcast and multicast service (MBMS) session. A device and system for sensing silent period configuration are also disclosed. The purpose of the invention is to provide a method, device and system for configuration of sensing silent periods, which can flexibly configure some sub-frames as MBSFN frames according to current sensing requirements, in which no multimedia broadcast and multicast data is sent, and configure the MBSFN sub-frames to carry sensing silent periods during which the MBSFN frames sense.

Description

Method, device and system for sensing silent period configuration

This application claims priority to Chinese Patent Application No. 201210250376.9, entitled "A Perceptual Quiet Period Configuration Method, Apparatus and System", filed on July 19, 2012, the entire contents of which are incorporated by reference. In this application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for configuring a 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 TV, radio, radar, navigation, etc., which use fixed frequency points, some of which are not always used, nor are they everywhere. They are all used, so there are certain time periods and some geographical locations where some frequency points are not fully used, especially in the case of current spectrum resources, resulting in a great waste of spectrum resources. Cognitive Radio (CR) is the most promising technology to solve the spectrum resource shortage. By sensing the wireless spectrum environment, the technology can discover unoccupied frequency bands that appear anywhere and anytime without disturbing the primary user. , PU, that is, a specific user using a fixed frequency of allocation), dynamically accessing these unoccupied frequency bands, and realizing the use of the frequency band to form a pin type, thereby improving spectrum utilization.

When performing cognitive spectrum sensing, cognitive radio usually adopts a silent period sensing scheme. The sensing silent period is to prevent the signal of the secondary system itself from being perceived. In the sensing silent period, the secondary system does not send any signal, but the sensing frequency. The point, perceived duration, and perceived period are called the configuration of the silent period. In the prior art, a guard time slot (GP) between a downlink subframe and an uplink subframe in a Time Division Long Term Evolution (TD-LTE) system is used as a silent period of spectrum sensing. The impact on the TD-LTE system after the introduction of spectrum sensing can be reduced. However, the quiet period of this scheme is short, and it may not be able to receive useful information of the primary user signal during the silent period, so as to affect the perceived performance; and in order to ensure sufficient sensing time, the protection time slot needs to be configured to the maximum value. Not only the flexibility of the TD-LTE system protection slot configuration will be greatly affected, but also the silent period configuration is not flexible, and can not be flexibly configured according to current requirements.

In the prior art, spectrum sensing is performed by selecting consecutive subframes to form a long silent period or selecting several discrete subframes to form a discrete silent period, but the continuity of the service may be large. The impact of the LTE user equipment (User Equipment, UE) is not fully compatible with the normal LTE UE. Summary of the invention

The embodiment of the invention provides a method, a device and a system for configuring a silent period, which can flexibly configure certain subframes into a Multicast/Broadcast over Single Frequency Network (MBSFN) according to current sensing requirements. a frame, and does not transmit any Multimedia Broadcast and Multicast Service (MBMS) data in the MBSFN subframe, and configures the MBSFN subframe to carry a perceptual silence period.

For the compatibility with the 3GPP LTE standard, the silent period configuration of the embodiment of the present invention adopts the same procedure as the MBMS session initiation of the 3GPP TS 36.300, and the silent period adopts the same frame structure as the MBSFN subframe, that is, the unicast part and the MBSFN part. The MBSFN part is used as the perceived silent period.

The embodiment of the invention provides a method for configuring a silent period, the method comprising:

Configuring a single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period;

Perceiving during the perceived silent period;

The MBSFN subframe is a transmission mode used by the MBMS session of the multimedia multicast service.

The step of configuring the single-frequency network multicast broadcast MBSFN subframe to carry the sensing silent period includes:

Receiving a silent period configuration request message sent by the network element;

Sending a confirmation message to the network element for the silent period configuration request message;

To the multimedia multicast broadcast service MBMS Coordination Entity MCE sends the expanded first

The MBMS session initiation request message is sent to trigger the MCE to send the extended second MBMS session initiation request message to the evolved base station eNB, and establish a radio 7 load for the MBMS session initiated by the first MBMS session initiation request message; The silent period configuration request message includes configuration information that configures the MBMS session to be a perceived silent period.

The step of configuring the single frequency network multicast broadcast MBSFN subframe to carry the sensing silent period further includes:

Receiving, by the mobile management entity, the extended first MBMS session initiation request sent by the MME, determining whether the MBMS session initiated by the first MBMS session initiation request message is a perceptual silence period;

If yes, the radio bearer is established for the MBMS session initiated by the first MBMS session initiation request message according to the first MBMS session initiation request message.

Receiving an extended second MBMS session initiation request message sent by the MCE;

Sending a response message to the second MBMS session initiation request message to the MCE; configuring, according to the second MBMS session initiation request message, the MBMS session initiated by the second MBMS session initiation request message as perceptual silence Period

The second MBMS session initiation request message is received by the MCE.

Sent after the extended first MBMS session initiation request message sent by the MME.

Correspondingly, the embodiment of the present invention further provides a sensing silent period configuration apparatus, which is applied to an MME, where the apparatus includes:

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

a first sending module, configured to send, to the network element, an acknowledgment second spoofing module for sending the silent period configuration request message, to send an extended first MBMS session start request message to the MCE, triggering the MCE Establishing a radio bearer for the MBMS session initiated by the first MBMS session initiation request message;

The silent period configuration request message includes configuration information that configures the MBMS session to be a perceived silent period.

Correspondingly, an embodiment of the present invention further provides a sensing silent period configuration apparatus, which is applied to an MCE. The device includes:

a receiving module, configured to receive an extended first MBMS session initiation request message sent by the MME;

a determining module, configured to determine whether the MBMS session initiated by the first MBMS session initiation request message is a perceptual silence period;

a setting module, configured to: when the determining module determines that the MBMS session initiated by the first MBMS session initiation request message is a perceptual silence period, according to the first MBMS session initiation request message, the first MBMS The MBMS session initiated by the session initiation request message establishes a radio bearer.

Correspondingly, the embodiment of the present invention further provides a sensing silent period configuration apparatus, which is applied to an eNB, where the apparatus includes:

a receiving module, configured to receive an extended second MBMS session initiation request message sent by the MCE;

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

a configuration module, configured to configure, according to the second MBMS session initiation request message, an MBMS session initiated by the MBMS session initiation request message to be a perceptual silence period;

a sensing module, configured to perform sensing during the perceptual silence period;

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, the embodiment of the present invention further provides a perceptual silent period configuration system, where the perceptual silent period configuration system includes the perceptual silent period configuration apparatus and at least one terminal provided by the embodiment of the present invention.

Embodiments of the present invention have the following beneficial effects:

The embodiment of the present invention configures certain subframes into MBSFN subframes, and does not send any multimedia broadcast multicast data in the MBSFN subframes, and configures the MBSFN subframes to carry the perceived silent period. Since the MBSFN sub-frame is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silence period, the duration of the perceptual silence period is 928^, so the silent period is longer, which is good for perception. The perceptual silent period can be flexibly configured according to the current requirements. When the silent period configuration is performed, the protocol modification is small, and the backward LTE UE can be backward compatible. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is merely some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is a schematic structural diagram of a sensing silent period configuration system according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a sensing silent period configuration apparatus in FIG.

3 is a schematic structural diagram of a second embodiment of the sensing silent period configuration apparatus of FIG. 1. FIG. 4 is a schematic structural diagram of a third embodiment of the sensing silent period configuration apparatus of FIG. 1. FIG. A flow chart of a perceptual silent period configuration method;

6 is a flowchart of a first embodiment of configuring a single frequency network multicast broadcast MBSFN subframe to carry a perceptual silence period according to 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 perceived silent period according to an embodiment of the present disclosure;

FIG. 8 is a flowchart of a third embodiment of configuring a single frequency network multicast broadcast MBSFN subframe to carry a perceived silent period according to an embodiment of the present invention. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic structural diagram of a system for sensing a silent period configuration according to an embodiment of the present invention. The system includes: a perceptual silence period configuration device 01-03, at least one terminal 04.

Specifically, the perceptual silent period configuration apparatus 01 is applied to a Mobility Management Entity (MME);

The perceptual silent period configuration apparatus 02 is applied to an MB-based Coordination Entity (MCE); The perceptual silence period configuration apparatus 02 is applied to an evolved Node B (eNB);

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

Referring to FIG. 2, a schematic structural diagram of the device 01 configured for the perceptual silent period in FIG. The sensing silent period configuration device 01 is applied to the MME, and includes: a receiving module 011, a first sending module 012, and a second sending module 013, where:

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

Specifically, the network element includes but is not limited to: a database or a network management system or an eNB. It is assumed that in the embodiment of the present invention, the network element is an eNB, and when the eNB needs to perform spectrum sensing, the quiescent period configuration request message is sent to the sensible silent period configuration device 01, and the receiving module 011 receives the silence sent by the eNB. Period configuration request message.

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

The silent period offset information is used to indicate a start subframe of the perceptual silence period.

Specifically, the silent period offset information indicates from which subframe the subframe is specifically used as the sensing silent period, that is, the starting time of the sensing silent period.

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

Specifically, the duration of the silent period indicates a duration of the perceived silent period, and the length of the duration of the spectrum sensing may be controlled by indicating the number of subframes of the perceived silent period.

The silent period information is used to indicate a spectrum sensing period of the perceptual silence period.

Specifically, the silent period information indicates how often the spectrum sensing is performed.

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

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, and sends an acknowledgement message to the silent period configuration request message.

The second sending module 013 is configured to send the extended first MBMS session to the MCE. And sending the MCE to the evolved base station eNB to send the extended second MBMS session initiation request message and establish a radio bearer for the MBMS session initiated by the first MBMS session initiation request message.

Specifically, the MBSFN transmission mode is used to support the Evolved Multimedia Broadcast and Multicast Service (E-MBMS) in the 3rd Generation Partnership Project (3GPP) technical specification, and the MBSFN transmission is adopted. The mode not only saves frequency resources, improves spectrum utilization, but also improves the receiving performance of MBMS service users at the cell edge. The MBSFN subframe is divided into a unicast portion and an MBSFN portion. The unicast part is used to transmit the downlink L1/L2 (Layer 2, layer 1/Layer 2, layer 2) control channel, and specifically includes a physical control channel (Physical Downlink Control Channel, PDCCH), and a physical control format indicator channel (Physical Control Format Indicator Channel, PCFICF) and Physical HARQ Indicator Channel (PHICH), the MBSFN part is used to transmit a 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, the MCE may be triggered to send the extended to the evolved base station eNB. The second MBMS session initiation request message is used to establish a radio bearer for the MBMS session initiated by the first MBMS session initiation request message, and the MBMS session specifically uses the MBSFN subframe for data transmission.

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

The control word indicates whether the MBMS session initiated by the corresponding MBMS session initiation request message is the perceived silent period.

Specifically, in the 3GPP TS 36.300 protocol, the MBMS session initiation request message includes information such as an IP (Internet Protocol) protocol, a session attribute, and a minimum waiting time required for the first transmission. In the embodiment of the present invention, the MBMS session initiation request message needs to be extended, specifically, adding a control word and the configuration information to the MBMS session initiation request message.

The MBMS session initiated by the MBMS session initiation request message indicated by the control word is the perceived silent period; the configuration information includes but is not limited to: a silent period offset information, Quiet period duration information and silent period information.

If the MBMS session initiated by the MBMS session initiation request message indicated by the control word is the perceptual silence period, the MCE directly establishes a radio bearer for the MBMS session initiated by the MBMS session initiation request message, and according to The configuration information configures certain subframes into MBSFN subframes used by the MBMS session, and does not send any data in the MBSFN subframes, and uses the MBSFN subframes as a perceptual silence period to implement a perceptual silence period. Flexible configuration.

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

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

The embodiment of the present invention configures certain subframes into MBSFN subframes, and does not send any multimedia broadcast multicast data in the MBSFN subframe, and configures the MBSFN subframe to carry the perceived silent period. Since the MBSFN sub-frame is divided into a unicast part and an MBSFN part, if only one unicast symbol is used as the perceptual silence period, the duration of the perceptual silence period is 928^, so the silent period is longer, which is good for perception. The perceptually silent period can be flexibly configured according to the current requirements. When the silent period configuration is performed, the protocol modification is small, and the backward LTE UE can be backward compatible.

Referring to FIG. 3, a schematic structural diagram of the device 02 configured for the perceptual silent period in FIG. The sensing silent period configuration device 02 is applied to the MCE, and includes: a receiving module 021, a determining module 022, and an establishing module 023, where:

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

Specifically, after the MME sends the extended first MBMS session initiation request message to the perceptual silent period configuration device 02, the receiving module 021 receives the extended first MBMS session initiation request message.

The extended first MBMS session initiation request message includes a control word and configuration information. The control word indicates that the first MBMS session initiation request message is requested to be started. Whether the MBMS session is the perceptual silence period; the configuration information is used to configure the MBMS session as the perceptual silence period.

The determining module 022 is configured to determine whether the MBMS session requested by the first MBMS session initiation request message is a perceptual silence period.

Specifically, the determining module 022 determines, according to the indication of the control word in the first MBMS session initiation request message, that is, the content of the control word, that the first MBMS session initiation request message is requested to be started. Whether the MBMS session is the perceived silent period.

Of course, the determining module 022 may also determine, according to other information, whether the MBMS session initiated by the first MBMS session initiation request message is the perceived silent period, for example, according to whether the first MBMS session initiation request message is included. The configuration information is used for judgment.

The establishing module 023 is configured to: when the determining module determines that the MBMS session initiated by the first MBMS session initiation request message is a perceptual silence period, according to the first MBMS session initiation request message, The MBMS session initiated by the first MBMS Session Initiation Request message establishes a radio bearer.

Specifically, when the determining module 022 determines that the MBMS session initiated by the first MBMS session initiation request message is a perceptual silence period, the establishing module 023 is configured according to the first MBMS session initiation request message. The configuration information is used to establish a radio bearer for the MBMS session initiated by the first MBMS session initiation request message, and configured to configure certain subframes into MBSFN subframes used by the MBMS session according to the configuration information, and MBSFN subframes do not send any data, and these MBSFN subframes are used as a perceptual silence period in order to achieve flexible configuration of the perceptual silence period.

If the determining module 022 determines that the MBMS session initiated by the first MBMS session initiation request message is not the perceived silent period, since the general MBMS session is dedicated to certain services with a large amount of data, the It is checked if there are sufficient resources to determine whether to establish a radio bearer for the MBMS session requested by the first MBMS Session Initiation Request message. The MBMS session as a perceptual silence period is prioritized here.

Further, as shown in FIG. 3, the establishing module 023 specifically includes:

The first sending unit 0231 is configured to send, to the MME, a response message to the first MBMS session initiation request message. Specifically, after the receiving module 021 receives the extended first MBMS session initiation request message, the first sending unit 0231 sends a response message to the first MBMS session initiation request message to the MME. .

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

Specifically, the extended second MBMS session initiation request message sent by the second sending unit 0232 to the eNB is not the same as the content included in the first MBMS session initiation request message, but includes the control. And the configuration information, the second sending unit 0232 notifying the eNB to configure the MBMS session initiated by the second MBMS session initiation request message to be the perceived silent period, that is, according to the second MBMS session. Initiating the configuration information in the request message, configuring some subframes into MBSFN subframes used by the MBMS session, and transmitting no data in the MBSFN subframes, and using these MBSFN subframes as a perceptual silence period, so as to implement Perceived flexible configuration of silent periods.

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

Specifically, after the second sending unit 0232 sends the second MBMS session initiation request message to the eNB, the eNB responds to the second MBMS session initiation request message, and the receiving module 021 further And a method for receiving a response message sent by the eNB to the second MBMS session initiation request message.

Referring to FIG. 4 , which is a schematic structural diagram of the sensing silent period configuration apparatus 03 in FIG. 1 , the sensing silent period configuration apparatus 03 is applied to an eNB, and includes: a receiving module 031, a sending module 032, a configuration module 033, and a sensing module 034. , among them: The receiving module 031 is configured to receive the extended second MBMS session initiation 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 perceptual silent period configuration device 03, 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 MCE to the second MBMS session initiation request message.

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 MCE to the second MBMS session initiation request message.

The configuration module 033 is configured to configure, according to the second MBMS session initiation request message, the MBMS session initiated by the second MBMS session initiation request message to be a perceptual silence period.

Specifically, the configuration module 033 configures the MBMS session initiated by the second MBMS session initiation request message to be a perceptual silence period according to the configuration information in the second MBMS session initiation request message.

The configuration module 033 configures certain subframes into the MBMS session according to the configuration information. The MBSFN subframes are used, and no data is transmitted in these MBSFN subframes, and these MBSFN subframes are used as a perceptual silence period, so as to implement flexible configuration for the perceived silent period. At the same time, the length of the perceived silent period can be flexibly controlled to achieve a good spectrum sensing effect.

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

Specifically, the sensing module 034 senses during the sensing silent period to timely discover unoccupied frequency bands in the wireless spectrum environment.

FIG. 5 is a flowchart of a method for configuring a silent silent period according to an embodiment of the present invention, where the method includes:

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

Specifically, the MBSFN subframe is a transmission mode used by the MBMS session of the multimedia multicast service. The MBSFN transmission mode is adopted in the 3GPP technical specification to support E-MBMS. 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 portion and an MBSFN portion. The unicast part is used to transmit the downlink L1/L2 control channel, including PDCCH, PCFICF and PHICH, and the MBSFN part is used to transmit the PMCH.

The single-frequency network multicast broadcast MBSFN subframe is configured to be aware of the silent period, and the MBSFN subframe transmission mode has the advantages of flexible configuration and time controllability during the perceptual silence period.

The S101 specifically includes the following steps:

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

Step 2: Send an acknowledgement message to the network element to the silent period configuration request message. Step 3: Send an extended first MBMS session initiation request message to the MBMS coordination entity MCE, triggering the MCE to the evolved base station The eNB sends the extended second MBMS session initiation request message and initiates the MBMS initiated by the first MBMS session initiation request message. The session establishes a radio bearer;

Step 4: Receive an extended first MBMS session initiation request message sent by the mobility management entity MME.

Step 5: Determine whether the MBMS session initiated by the first MBMS session initiation request message is a perceptual silence period;

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

Step 7: Send an extended second MBMS session initiation request message to the eNB, and notify the eNB to configure the MBMS session initiated by the second MBMS session initiation request message to be the perceived silent period;

Step 8: Receive the extended second MBMS session initiation request message sent by the MCE; Step 9: Send a response to the second MBMS session initiation request message to the MCE. Step 10: According to the second MBMS session Activating a request message, configuring an MBMS session initiated by the second MBMS session initiation request message to be a perceptual silence period;

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

S102: Perform sensing during the perceptual silence period.

Specifically, the perceptual silence period configuration device performs sensing during the perceptual silence period to timely discover unoccupied frequency bands in the radio spectrum environment.

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, where the method includes:

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

Specifically, the network element includes but is not limited to: a database or a network management system or an eNB. Assume in the present invention In the embodiment, the network element is an eNB. When the eNB needs to perform spectrum sensing, the MME sends a silent period configuration request message to the MME, and the MME receives the silent period configuration request message sent by the eNB.

51012. Send a confirmation message to the network element for the silent period configuration request message.

Specifically, after receiving the silent period configuration request message sent by the eNB, the MME responds to the eNB, and sends an acknowledgement message to the silent period configuration request message.

And sending an extended first MBMS session initiation request message to the evolved base station eNB, and sending the requested message to the first MBMS session start request message. The MBMS session requesting the initiation establishes a radio bearer.

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

The control word indicates that the corresponding MBMS session initiation request message is requested to be started. Whether the MBMS session is the perceived silent period.

Specifically, in the 3GPP TS 36.300 protocol, the MBMS session initiation request message includes information such as an IP multicast address, an attribute of the session, and a minimum waiting time required for the first transmission. In the embodiment of the present invention, the MBMS session initiation request message needs to be extended, specifically, the control word and the configuration information are added to the MBMS session initiation request message.

The MBMS session initiated by the MBMS session initiation request message indicated by the control word is the perceived silent period; the configuration information includes, but is not limited to, a silent period offset information, a silent period duration information, and a silence. Period information.

Therefore, after the MME sends the extended first MBMS session initiation request message to the MBMS coordination entity MCE, the MCE may be triggered to send the extended second MBMS session initiation request message to the evolved base station eNB. The MBMS session initiated by the MBMS session initiation request message establishes a radio bearer, and the MBMS session specifically uses an MBSFN subframe for data transmission.

FIG. 7 is a flowchart of a second embodiment of configuring a single frequency network multicast broadcast MBSFN subframe to carry a perceived silent period, where the method includes:

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

Specifically, when the MME sends the extended first MBMS session initiation request message to the MCE, Afterwards, the MCE receives the extended first MBMS session initiation request message. The extended first MBMS session initiation request message includes a control word and configuration information. The control word indicates whether the MBMS session initiated by the first MBMS session initiation request message is the perceived silent period; and the configuration information is used to configure the MBMS session as the perceived silent period.

51015. Determine whether the MBMS session initiated by the first MBMS session initiation request message is a perceptual silence period, and if yes, execute S303.

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

Of course, the MCE may determine, according to other information, whether the MBMS session initiated by the first MBMS session initiation request message is the perceived silent period, for example, whether the configuration information is included in the first MBMS session initiation request message. To judge.

If the MCE determines that the MBMS session initiated by the first MBMS session initiation request message is not the perceived silent period, since the general MBMS session is dedicated to certain services with a large amount of data, it is necessary to check whether there is enough Resources to determine whether to establish a radio bearer for the MBMS session requested by the first MBMS Session Initiation Request message. The MBMS session as a perceptual silent period is prioritized here.

The MME sends a response to the first MBMS session initiation request message to the MME. After receiving the extended MBMS session initiation request message, the MCE sends the first MBMS to the MME. The response message for the session initiation request message.

51017. Send an extended second MBMS session initiation request message to the eNB, and notify the eNB to configure the MBMS session initiated by the second MBMS session initiation request message to be the perceived silent period.

Specifically, the extended second MBMS session initiation request message sent by the MCE to the eNB is not the same as the content included in the first MBMS session initiation request message, but includes the control word and the configuration information. The perceptual silence period configuration apparatus notifies the eNB to configure the MBMS session as the perceptual silence period, that is, according to the second MBMS session initiation request message. The configuration information is configured to configure certain subframes into MBSFN subframes used by the MBMS session, and do not send any data in the MBSFN subframes, and use the MBSFN subframes as a perceptual silence period, so as to implement flexibility for sensing silent periods. Configuration.

FIG. 8 is a flowchart of a fourth embodiment of a method for configuring a silent silent period according to an embodiment of the present invention. The method includes:

51018: Receive an 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 MCE by the MME. After sending.

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 Initiation Request message to the eNB, the eNB receives the extended MBMS Session Initiation Request message.

And sending a response to the second MBMS session initiation request message to the MCE. After receiving the extended second MBMS session initiation request message, the eNB sends the MCE to the MCE. The response message of the two MBMS session initiation request message.

S10110. Configure an MBMS session initiated by the second MBMS session initiation request message to be a perceptual silence period according to the second MBMS session initiation request message.

Specifically, the eNB configures the MBMS session initiated by the second MBMS session initiation request message to be a perceptual silence period according to the configuration information in the second MBMS session initiation request message.

The configuration information includes but is not limited to: silent period offset information, silent period duration information, and silent period information, where: The silent period offset information is used to indicate a start subframe of the perceptual silence period. Specifically, the silent period offset information indicates, from which subframe, the subframe is the perceived silent period, that is, the start time of the silent period.

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

Through the description of the above embodiments, 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, all can be implemented by hardware. Based on such understanding, all or part of the technical solution of the present invention contributing to the background art may be embodied in the form of a software product, which may be stored in a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, or the like. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or portions of the embodiments.

Claims

Rights request

1. A perceptual silent period configuration method, which is characterized by including:

Configure the MBSFN subframe of the single frequency network multicast broadcast to carry the aware silence period;

Perceiving during said perceptual silence period;

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

2. The method of claim 1, wherein the step of configuring the single frequency network multicast broadcast MBSFN subframe to carry a sensing silent period specifically includes:

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

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

Send the extended first MBMS session start request message to the MBMS coordination 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 requested MBMS session to be initiated establishes the radio bearer;

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

3. The method of claim 2, wherein the expanded first MBMS session startup request message and the second MBMS session startup request message both 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 in the perceived silent period.

4. The method of claim 1, wherein the step of configuring the single frequency network multicast broadcast MBSFN subframe to carry a sensing silent period further includes:

Receive the expanded first MBMS session initiation request message sent by the mobility management entity MME. Determine whether the MBMS session requested to be started by the first MBMS session start request message is in the perceived silent period;

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

5. The method of claim 4, wherein the expanded first MBMS session start request message includes a control word 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 in the perceived silent period;

The configuration information is used to configure the MBMS session as the aware silent period.

6. The method according to claim 5, wherein the step of determining whether the MBMS session requested to be started by the first MBMS session start request message is a aware silent period is specifically: according to the first MBMS The indication of the control word in the session start request message, or based on whether the first MBMS session start request message includes the configuration information, determine whether the MBMS session requested to be started by the first MBMS session start request message is The perceived silent period.

7. The method of claim 5, wherein the step of establishing a radio bearer for the MBMS session requested to be started by the first MBMS session start request message according to the first MBMS session start request message, include:

Send a response message to the first MBMS session start request message to the MME; send an expanded second MBMS session start request message to the evolved base station eNB, notifying the eNB to send the second MBMS session start request message. The MBMS session requested to be started by the message is configured as the perceived silent period;

Wherein, the second MBMS session start request message includes the control word and the configuration information.

8. The method of claim 1, wherein the single frequency network multicast broadcast MBSFN The step of configuring the subframe to carry the sensing silent period also includes:

Receive the expanded second MBMS session start request message sent by the MCE;

Send a response message to the second MBMS session start request message to the MCE; configure the MBMS session requested to be started by the second MBMS session start request message as aware silence according to the second MBMS session start request message. Expect;

Wherein, the second MBMS session start request message is received by the MCE.

Sent after the expanded first MBMS session start request message sent by the MME.

9. The method of claim 8, wherein the expanded first MBMS session startup request message and the second MBMS session startup 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 in the perceived silent period;

10. The method according to claim 2, characterized in that the network element includes a database or a network management or the eNB.

11. The method of claim 2, 5, or 9, wherein the configuration information includes silent period offset information, silent period duration information, and silent period cycle information, wherein:

The silent period offset information is used to indicate the starting subframe of the perceived silent period;

The silent period duration information is used to indicate the number of subframes of the perceptual silent period; the silent period period information is used to indicate the spectrum sensing period of the perceptual silent period.

12. A device for sensing silent period configuration, applied in MME, characterized in that it includes: a receiving module, configured to receive a silent period configuration request message sent by a network element;

The first sending module is configured to send an acknowledgment of the silent period configuration request message to the network element. The second sending module is configured to send the expanded first MBMS session start request to the MCE. message, triggering the MCE to send an expanded second MBMS session start request message to the evolved base station eNB and establish a wireless bearer for the MBMS session requested to be started by the first MBMS session start request message;

13. The apparatus of claim 12, wherein the expanded first MBMS session start request message and the second MBMS session start request message both include a control word and the configuration information;

14. The apparatus according to claim 12, wherein the receiving module is further configured to receive a response message sent by the MCE to the first MBMS session start request message.

15. A perceptual silent period configuration device, applied in MCE, characterized by including: a receiving module, configured to receive the expanded first MBMS session start request message sent by the MME;

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

An establishment module, configured to, when the judgment module determines that the MBMS session requested to be started by the first MBMS session start request message is a perceived silent period, based on the first MBMS session start request message, set the first MBMS session to the first MBMS session start request message. The MBMS session requested to be started by the session start request message establishes a radio bearer.

16. The device according to claim 15, the expanded first MBMS session start request message includes a control word 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 in the perceived silent period; The configuration information is used to configure the MBMS session as the aware silent period.

17. The device according to claim 16, characterized in that:

The judgment module is specifically based on the indication of the control word in the first MBMS session start request message, or

Whether the first MBMS session start request message includes the configuration information,

Determine whether the MBMS session requested to be started by the first MBMS session start request message is in the perceived silent period.

18. The apparatus according to claim 16, wherein the establishment module specifically includes: 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 an expanded second MBMS session start request message to the eNB, and notify the eNB to configure the MBMS session requested to be started by the second MBMS session start request message as the perceived silent period;

19. The apparatus according to claim 18, wherein the receiving module is further configured to receive a response message sent by the eNB to the second MBMS session start request message.

20. A perceptual silent period configuration device, applied to eNB, characterized by including: a receiving module, configured to receive the expanded 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 the aware silent period according to the second MBMS session start request message;

A sensing module, used for sensing during the sensing silent period; Wherein, the second MBMS session start request message is sent by the MCE after receiving the expanded first MBMS session start request message sent by the MME.

21. The apparatus of claim 20, wherein the expanded first MBMS session start request message and the second MBMS session start request message both include control words and configuration information;

22. The device according to claim 12, characterized in that the network element includes a database or a network management or the eNB.

23. The device of claim 12, 16, or 21, wherein the configuration information includes silent period offset information, silent period duration information, and silent period cycle information, wherein: the silent period offset The amount information is used to indicate the starting subframe of the sensing silent period;

24. A perceptual silent period configuration system, characterized by comprising the perceptual silent period configuration device according to any one of claims 12-21 and at least one terminal.