CN108271267B - Terminal resource allocation method, eNB and VoLTE system - Google Patents
Terminal resource allocation method, eNB and VoLTE system Download PDFInfo
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- CN108271267B CN108271267B CN201611252877.5A CN201611252877A CN108271267B CN 108271267 B CN108271267 B CN 108271267B CN 201611252877 A CN201611252877 A CN 201611252877A CN 108271267 B CN108271267 B CN 108271267B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention discloses a method for allocating terminal resources during service switching, an eNB and a VoLTE system, and relates to the field of communication, wherein the method comprises the following steps: the target eNB judges whether the switched service is VoLTE service; if so, the target eNB allocates resources for reporting the Buffer Status Report (BSR) to the calling terminal after determining that the Radio Resource Control (RRC) connection is established with the calling terminal of the VoLTE service, without waiting for the calling terminal to send a Scheduling Request (SR). The distribution method, the eNB and the VoLTE system can solve the influence of the SR missing detection problem in the switching process on the voice quality of the VoLTE service in the switching process, so that the uplink data packet of the switched VoLTE service can be sent in real time, the quality of the VoLTE service is improved, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method for allocating terminal resources during service handover, an eNB, and a VoLTE system.
Background
The Voice over Long Term Evolution (Voice over Long Term Evolution) service is a Voice service carried in an LTE network and is an Evolution direction of the Voice service. In the future, voice services of operators are expected to be migrated from 2G/3G networks to LTE networks, user experience of VoLTE services is an important basis for operator competition, and voice quality of VoLTE services is the most important index concerned by operators.
In an actual network, voice quality degradation during user handover is an important reason for influencing the voice quality of the VoLTE service. The outfield test shows that the burst and packet discard of the uplink data packet are important factors of voice quality reduction in the switching process, and the important reason of the burst and packet discard of the uplink data packet is that the network side does not timely solve the SR, so that the network side does not timely schedule uplink resources for the terminal. The main points are as follows: before the discarding timer is overtime, if the scheduling is successful, uplink data burst is caused, and further jitter is increased to influence voice quality; if the discard timer is overtime, the scheduling is not successful, so that the terminal directly discards the packet, and the packet loss rate of the receiving side is increased, thereby affecting the voice quality.
Disclosure of Invention
In view of the above, a technical problem to be solved by the present invention is to provide a method for allocating terminal resources during service handover, an eNB, and a VoLTE system.
According to an embodiment of the present invention, a method for allocating terminal resources during service handover is provided, including: the target eNB judges whether the switched service is a VoLTE service; if so, the target eNB allocates resources for reporting a Buffer Status Report (BSR) to the calling terminal after determining that Radio Resource Control (RRC) connection is established with the calling terminal of the VoLTE service, without waiting for the calling terminal to send a Scheduling Request (SR).
Optionally, if the target eNB determines that the switched service is not a VoLTE service, determining whether a scheduling request SR sent by the calling terminal is received; and after the SR is determined to be received, the target eNB allocates resources for reporting BSR to the calling terminal.
Optionally, the determining, by the target eNB, whether the switched service is the VoLTE service includes: the target eNB receives a Handover Request message sent by a source eNB; the target eNB analyzes the Handover Request message and acquires a value of a QOS (quality of service) grade identifier (QCI) from the Handover Request message; and the target eNB judges the service type based on the value of the QCI.
Optionally, when the QCI value is determined to be 1, the target eNB determines that the service is a VoLTE service.
Optionally, the determining, by the target eNB, that the radio resource control RRC connection is established with the calling terminal includes: the target eNB sends an RRC Reconfiguration message to the calling terminal; and when the target eNB judges that the RRC Reconfiguration Complete message sent by the calling terminal is received, determining that the target eNB establishes RRC connection with the calling terminal.
Optionally, allocating, to the calling terminal, resources for reporting a buffer status report BSR further includes: the target eNB receives a Buffer Status Report (BSR) reported by the calling terminal; the target eNB determines to allocate resources for sending uplink data to the calling terminal according to the BSR; and the target eNB sends uplink resource allocation information to the calling terminal, and is used for allocating the resource for sending the uplink data to the calling terminal.
According to another aspect of the present invention, there is provided an eNB as a target base station, including: the service type judging module is used for judging whether the switched service is the VoLTE service; the first resource allocation module is used for allocating resources for reporting Buffer Status Report (BSR) to the calling terminal after the calling terminal of the VoLTE service is determined to be established with the RRC connection, and the Scheduling Request (SR) does not need to be sent by the calling terminal.
Optionally, the scheduling request receiving module is configured to determine whether a scheduling request SR sent by the calling terminal is received if it is determined that the switched service is not the VoLTE service; the first resource allocation module is further configured to allocate, to the calling terminal, a resource for reporting a BSR after determining that the SR is received.
Optionally, the service type determining module is further configured to receive a Handover Request message sent by a source eNB, analyze the Handover Request message, obtain a value of a QOS class identifier QCI from the Handover Request message, and determine a service type based on the value of the QCI.
Optionally, the service type determining module is further configured to determine that the service is a VoLTE service when the value of the QCI is 1.
Optionally, the apparatus includes a wireless connection determining unit, configured to send an RRC Reconfiguration message to the calling terminal; and a radio connection determining unit configured to determine that the target eNB establishes an RRC connection with the calling terminal when the target eNB determines that the RRC Reconfiguration Complete message sent by the calling terminal is received.
Optionally, the BSR receiving module is configured to receive a buffer status report BSR reported by the calling terminal; and the second resource allocation module is used for determining to allocate resources for sending uplink data to the calling terminal according to the BSR, and sending uplink resource allocation information to the calling terminal, so as to allocate the resources for sending the uplink data to the calling terminal.
According to another aspect of the present invention, there is provided a VoLTE system, including: the eNB as described above.
According to the terminal resource allocation method during service switching, the eNB and the VoLTE system, after the target eNB determines that RRC connection is established with the calling terminal of the VoLTE service, resources for reporting BSR are directly allocated to the calling terminal without waiting for the calling terminal to send the SR, so that the influence of the SR missing detection problem in the switching process on the voice quality of the VoLTE service in the switching process can be solved, the uplink data packet of the VoLTE service after switching can be sent in real time, and the VoLTE service quality is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating an embodiment of a method for allocating terminal resources during service handover according to the present invention;
fig. 2 is a schematic signaling interaction diagram of another embodiment of a method for allocating terminal resources during service handover according to the present invention;
fig. 3 is a flowchart illustrating a method for allocating terminal resources during service handover according to another embodiment of the present invention;
fig. 4 is a block diagram of an eNB according to an embodiment of the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The technical solution of the present invention is described in various aspects below with reference to various figures and embodiments.
The terms "first", "second", and the like are used hereinafter only for descriptive distinction and not for other specific meanings.
Fig. 1 is a flowchart illustrating an embodiment of a method for allocating terminal resources during service handover according to the present invention, as shown in fig. 1:
And if the target eNB determines that the switched service is not the VoLTE service, judging whether a scheduling request SR sent by the calling terminal is received. And after the SR is determined to be received, the target eNB allocates resources for reporting the BSR to the calling terminal.
The voice quality of the VoLTE service is the foundation of the VoLTE service business, and in the prior art, when the VoLTE service is switched, the probability of burst and packet discarding of a VoLTE uplink data packet is very high due to the common existence of SR missing detection problem. Since VoLTE traffic is real-time traffic, one speech frame every 20ms during non-silent periods, while the handover delay is usually around tens of milliseconds. In general, after switching, a terminal immediately has data to send to a network, so that a data packet of the VoLTE service is a continuously sent data packet, a scheduling strategy is optimized based on service characteristics, and the SR missing detection problem is solved.
And after the switching occurs, the target eNB sends an RRC Reconfiguration message to the calling terminal, and when the target eNB judges that the RRC Reconfiguration Complete message sent by the calling terminal is received, the target eNB and the calling terminal are determined to establish RRC connection. After the target base station receives the RRC Reconfiguration Complete, the base station first determines the service characteristics, and if the service is the VoLTE service (i.e., the bearer with the QCI of 1), immediately schedules the uplink resource for transmitting the BSR to the terminal, and does not wait for the SR transmitted by the terminal. After resolving the resource allocated to the terminal in the PDCCH, the terminal reports the BSR, and after resolving the BSR, the base station configures network resources for scheduling uplink data to the terminal, and the terminal further sends an uplink data packet.
The method for allocating terminal resources during service switching in the above embodiment can avoid SR missing detection problem in the switching process through the network side on the premise of not changing the standard, so that the voice packet of LTE can be sent in time, and the voice quality of VoLTE service is improved.
There may be various methods for the target eNB to determine whether the switched service is the VoLTE service. For example, the target eNB receives a Handover Request message sent by the source eNB, the target eNB analyzes the Handover Request message, and obtains a value of a QOS class identifier QCI from the Handover Request message, and the target eNB determines a service type based on the value of the QCI. For example, when the value of QCI is judged to be 1, the target eNB determines that the traffic is VoLTE traffic.
Fig. 2 is a schematic signaling interaction diagram of another embodiment of a method for allocating terminal resources during service handover according to the present invention, as shown in fig. 2:
step 201, the calling terminal sends a test report MR to the source eNB.
Step 202, the source eNB sends a Handover Request message to the target eNB.
Step 203, the target eNB analyzes the Handover Request message, obtains a value of a QOS class identifier QCI from the Handover Request message, and determines that the QCI value is 1, which is a VoLTE service. The target eNB sends a Handover Request Ack message to the source eNB.
Step 204, the source eNB sends RRc a reconfiguration message to the calling terminal, and the calling terminal performs uplink synchronization with the target cell of the target base station.
Step 205, the calling terminal sends an RRC reconfiguration complete message to the target eNB.
In step 206, after receiving the RRC reconfiguration complete message, the target eNB allocates resources for reporting the BSR to the calling terminal, and sends an indication message to the calling terminal to indicate the resources for sending the BSR allocated to the terminal, when the SR sent by the terminal is not equal.
Step 207, the calling terminal reports the buffer status report BSR to the target eNB.
And step 208, the target eNB determines to allocate resources for transmitting uplink data to the calling terminal according to the BSR, and the target eNB transmits uplink resource allocation information to the calling terminal for allocating the resources for transmitting the uplink data to the calling terminal.
In the method for allocating terminal resources during service switching in the above embodiment, a new uplink data scheduling method is provided, so that a data packet of a VoLTE service can be sent in real time during switching, after switching, a base station does not wait for detection of an SR, and directly schedules uplink resources for sending a BSR to a terminal, thereby realizing real-time sending of a VoLTE uplink data packet; the problems of burst and packet abandon of the VoLTE data packet in the switching process are solved; the method for transmitting the uplink data packet in the prior art can be improved according to the characteristics of the real-time performance and continuity of the VoLTE service,
fig. 3 is a flowchart illustrating a method for allocating terminal resources during service handover according to another embodiment of the present invention, as shown in fig. 3:
In step 303, the target base station receives the RRC Reconfiguration Complete message sent by the terminal.
In step 305, the terminal sends a BSR to the target base station.
In step 308, the target base station receives the RRC Reconfiguration Complete message sent by the terminal.
And 310, not performing uplink scheduling on the target terminal until receiving the SR sent by the terminal.
In step 312, the terminal sends a BSR to the target base station.
In step 314, the terminal sends uplink data to the target base station.
In the method for allocating terminal resources during service switching in the above embodiment, after determining that RRC connection is established with the calling terminal of the VoLTE service, the target eNB directly allocates resources for reporting a BSR to the calling terminal without waiting for the calling terminal to send an SR, so that the problem of SR omission during switching can be solved, the voice quality of the VoLTE service during switching can be affected, and an uplink data packet of the VoLTE service after switching can be sent in real time.
In one embodiment, as shown in fig. 4, the present invention provides an eNB40, which may be a target base station, including: a service type judging module 41, a wireless connection determining unit 42, a first resource allocating module 43, a scheduling request receiving module 44, a BSR receiving module 45, and a second resource allocating module 46.
The service type determining module 41 determines whether the switched service is a VoLTE service. The radio connection determining unit 42 determines whether a radio resource control RRC connection is established with a calling terminal that switches the service if it is determined that the switched service is the VoLTE service. After determining that the radio resource control RRC connection is established with the calling terminal of the VoLTE service, the first resource allocation module 43 allocates resources for reporting the BSR to the calling terminal without waiting for the calling terminal to send the scheduling request SR.
If the switched service is determined not to be the VoLTE service, the scheduling request receiving module 44 determines whether a scheduling request SR sent by the calling terminal is received. After determining that the SR is received, the first resource allocation module 43 allocates resources for reporting the BSR to the calling terminal.
The service type determining module 41 receives a Handover Request message sent by the source eNB, analyzes the Handover Request message, obtains a value of a QOS class identifier QCI from the Handover Request message, and determines a service type based on the value of the QCI. When the value of QCI is 1, the service type determination module 41 determines that the service is VoLTE service.
The radio connection determination unit 42 transmits an RRC Reconfiguration message to the calling terminal. When determining that the RRC Reconfiguration Complete message transmitted by the calling terminal is received, the radio connection determining unit 42 establishes an RRC connection between the target eNB and the calling terminal.
The BSR receiving module 45 receives a buffer status report BSR reported by the calling terminal. The second resource allocation module 46 determines to allocate resources for sending uplink data to the calling terminal according to the BSR, and sends uplink resource allocation information to the calling terminal, so as to allocate resources for sending uplink data to the calling terminal.
In one embodiment, the present invention provides a VoLTE system, comprising: such as the eNB above.
In the terminal resource allocation method during service switching, the eNB and the VoLTE system in the above embodiments, after determining that the radio resource control RRC connection is established with the calling terminal of the VoLTE service, the target eNB directly allocates the resource for reporting the buffer status report BSR to the calling terminal without waiting for the calling terminal to send the SR, so that the problem of SR omission during the switching process can be solved, the voice quality of the VoLTE service during the switching process can be affected, an uplink data packet of the switched VoLTE service can be sent in real time, the VoLTE service quality is improved, and the user experience is improved.
The method and system of the present invention may be implemented in a number of ways. For example, the methods and systems of the present invention may be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless specifically indicated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (7)
1. A method for allocating terminal resources during service switching is characterized by comprising the following steps:
the target eNB judges whether the switched service is VoLTE service;
if so, the target eNB allocates resources for reporting a Buffer Status Report (BSR) to the calling terminal without waiting for the calling terminal to send a Scheduling Request (SR) after determining that Radio Resource Control (RRC) connection is established with the calling terminal of the VoLTE service;
if not, judging whether a scheduling request SR sent by the calling terminal is received or not;
after determining that the SR is received, the target eNB allocates resources for reporting BSR to the calling terminal;
wherein the target eNB determining whether the switched service is a VoLTE service includes:
the target eNB receives a Handover Request message sent by a source eNB; the target eNB analyzes the Handover Request message and acquires a value of a QOS (quality of service) grade identifier (QCI) from the Handover Request message; the target eNB judges the service type based on the value of the QCI;
the determining, by the target eNB, that the radio resource control RRC connection is established with the calling terminal includes:
the target eNB sends an RRC Reconfiguration message to the calling terminal; and when the target eNB judges that the RRC Reconfiguration Complete message sent by the calling terminal is received, determining that the target eNB establishes RRC connection with the calling terminal.
2. The method of claim 1,
and when the value of the QCI is judged to be 1, the target eNB determines that the service is the VoLTE service.
3. The method of claim 1 or 2, wherein allocating resources for reporting a Buffer Status Report (BSR) to the calling terminal further comprises:
the target eNB receives a Buffer Status Report (BSR) reported by the calling terminal;
the target eNB determines to allocate resources for sending uplink data to the calling terminal according to the BSR;
and the target eNB sends uplink resource allocation information to the calling terminal, and is used for allocating the resource for sending the uplink data to the calling terminal.
4. An eNB as a target base station, comprising:
the service type judging module is used for judging whether the switched service is the VoLTE service;
a radio connection determining unit for determining whether a radio resource control RRC connection is established with a calling terminal switching the service if it is determined that the switched service is the VoLTE service,
a first resource allocation module, configured to allocate a resource for reporting a Buffer Status Report (BSR) to a calling terminal of a VoLTE service after determining that a Radio Resource Control (RRC) connection is established with the calling terminal without waiting for the calling terminal to send a Scheduling Request (SR),
the scheduling request receiving module is used for judging whether a scheduling request SR sent by the calling terminal is received or not if the switched service is determined not to be the VoLTE service;
the first resource allocation module is further configured to allocate, to the calling terminal, a resource for reporting a BSR after determining that the SR is received;
the service type judging module is further configured to receive a Handover Request message sent by a source eNB, analyze the Handover Request message, acquire a value of a QOS class identifier QCI from the Handover Request message, and judge a service type based on the value of the QCI;
the radio connection determining unit is further configured to send an RRC Reconfiguration message to the calling terminal;
the radio connection determining unit is further configured to determine that the target eNB establishes an RRC connection with the calling terminal when determining that the RRC Reconfiguration Complete message sent by the calling terminal is received.
5. The eNB of claim 4,
the service type judging module is further configured to determine that the service is a VoLTE service when the value of the QCI is 1.
6. The eNB of claim 4, further comprising:
a BSR receiving module, configured to receive a buffer status report BSR reported by the calling terminal;
and the second resource allocation module is used for determining to allocate resources for sending uplink data to the calling terminal according to the BSR, and sending uplink resource allocation information to the calling terminal, so as to allocate the resources for sending the uplink data to the calling terminal.
7. A VoLTE system, comprising:
the eNB of any one of claims 4 to 6.
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