CN109756309B - Method, apparatus and medium for deactivating secondary member carrier - Google Patents
Method, apparatus and medium for deactivating secondary member carrier Download PDFInfo
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- CN109756309B CN109756309B CN201711058724.1A CN201711058724A CN109756309B CN 109756309 B CN109756309 B CN 109756309B CN 201711058724 A CN201711058724 A CN 201711058724A CN 109756309 B CN109756309 B CN 109756309B
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Abstract
The invention discloses a method, a device and a medium for deactivating auxiliary member carriers, wherein one method comprises the following steps: sending a notice for deactivating the auxiliary member carrier to a user plane subsystem so that the user plane subsystem determines a cache clearing strategy and a deactivation strategy; receiving the deactivation response carrying the deactivation strategy returned to the user plane subsystem; and deactivating the secondary member carrier according to the deactivation strategy. The invention effectively reduces the retransmission probability of the RLC message in the system, improves the communication performance of carrier aggregation and improves the user experience.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a medium for deactivating an auxiliary component carrier.
Background
In an LTE-a (Long Term Evolution-Advanced) communication system, in a CA (Carrier Aggregation) scenario, a primary serving cell (pcell) and one or more secondary serving cells (scells) may be configured for a UE; wherein, the carrier in the primary serving cell is called a primary Component carrier pcc (primary Component carrier), and may also be called a primary carrier; the carrier in the secondary serving cell is called a secondary Component carrier scc (secondary Component carrier), and may also be called a secondary carrier.
Carrier aggregation is based on MAC (Medium Access Control) aggregation, and each carrier has an independent HARQ (Hybrid Automatic Repeat Request) entity. To better manage battery consumption for CA-configured UEs, LTE provides an activation/deactivation mechanism for scells. When one UE configures one or more scells, the network may activate or deactivate the scells.
When the SCell is deactivated, all HARQ buffers associated with the SCell that are released should be emptied. If data transmission is carried out on the SCell and the HARQ buffer is emptied, the time delay of a data message is increased, the system overhead is also increased, and the gain of HARQ soft combining is reduced; when a large number of carrier aggregation users in the system are frequently deactivated, a large number of data retransmissions in the system can reduce the flow and increase the time delay, thereby reducing the communication performance of carrier aggregation and influencing the user experience.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks, embodiments of the present invention provide a method, an apparatus, and a medium for deactivating a secondary component carrier, so as to at least improve carrier aggregation communication performance.
To solve the above technical problem, a method for deactivating a secondary component carrier in an embodiment of the present invention includes:
sending a notice for deactivating the auxiliary member carrier to the user plane subsystem;
receiving a deactivation response carrying a deactivation strategy returned by the user plane subsystem;
and deactivating the secondary member carrier according to the deactivation strategy.
To solve the above technical problem, a method for deactivating a secondary component carrier in an embodiment of the present invention includes:
when receiving a notice of deactivating an auxiliary member carrier of a Media Access Control (MAC) subsystem, determining a cache clearing strategy and a deactivation strategy;
according to the cache clearing strategy, clearing data in the HARQ buffer; and
and returning a deactivation response carrying the deactivation strategy to the MAC subsystem.
To solve the above technical problem, a MAC device according to an embodiment of the present invention includes:
a notification sending module, configured to send a notification of deactivating the secondary component carrier to the user plane subsystem;
the strategy receiving module is used for receiving a deactivation response carrying the deactivation strategy returned by the user plane subsystem;
a deactivation module, configured to deactivate the secondary component carrier according to the deactivation policy.
To solve the above technical problem, an apparatus for a user plane according to an embodiment of the present invention includes:
the strategy determining module is used for receiving a notice of deactivating the auxiliary member carrier of the Media Access Control (MAC) subsystem and determining a cache clearing strategy and a deactivation strategy;
the buffer clearing module is used for clearing the data in the HARQ buffer area according to the buffer clearing strategy;
and the response module is used for returning a deactivation response carrying the deactivation strategy to the MAC subsystem.
In order to solve the above technical problem, in an embodiment of the present invention, a computer-readable storage medium stores a first computer program for deactivating a secondary component carrier for a media access control MAC subsystem, and/or stores a second computer program for deactivating a secondary component carrier for a user plane subsystem;
when being executed by at least one processor, to carry out the steps of the method as carried out above in a medium access control, MAC, subsystem;
the second computer program, when executed by at least one processor, is adapted to carry out the steps of the method as performed in the user plane subsystem above.
The embodiment of the invention has the following beneficial effects:
the method, the device and the medium in the embodiment of the invention ensure that the MAC subsystem activates the auxiliary carrier according to the activation strategy by determining the deactivation strategy and/or determining the cache clearing strategy in the user plane subsystem, thereby avoiding the problem of retransmission of upper RLC (radio link control) caused by the existence of data waiting for HARQ (hybrid automatic repeat request) feedback in the associated HARQ buffer when the auxiliary carrier is deactivated, effectively reducing the retransmission probability of RLC messages in the system, effectively reducing the time delay of data messages, reducing the system overhead, increasing the gain of HARQ (hybrid automatic repeat request) soft combining, enhancing the communication performance of carrier aggregation and enhancing the user experience.
Drawings
Fig. 1 is a flowchart of a method for deactivating a secondary component carrier, which is performed in a MAC subsystem according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for deactivating a secondary component carrier, which is performed in a user plane subsystem according to an embodiment of the present invention;
fig. 3 is an alternative interaction diagram of the MAC subsystem, the user plane subsystem and the terminal in the embodiment of the present invention;
FIG. 4 is a schematic diagram of an alternative interaction of the MAC subsystem, the user plane subsystem and the terminal in the embodiment of the present invention;
FIG. 5 is a schematic diagram of yet another alternative interaction of the MAC subsystem, the user plane subsystem and the terminal in an embodiment of the invention;
fig. 6 is a schematic structural diagram of a MAC apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a user plane device according to an embodiment of the present invention.
Detailed Description
The inventors have studied to find out that the reasons for the defects described in the background art are: the related scheme does not consider that, when the secondary member carrier is deactivated, after the HARQ buffer is emptied, the MAC PDU (Protocol Data Unit) waiting for acknowledgement therein is immediately deleted, and at this time, if the MAC Data is not correctly received, retransmission of the upper RLC (Radio Link Control Protocol) is directly caused.
Based on the above findings and in order to overcome the above drawbacks, embodiments of the present invention provide a method, an apparatus, and a medium for deactivating a secondary component carrier, which are described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example one
An embodiment of the present invention provides a method for deactivating a secondary component carrier, where as shown in fig. 1, the method includes:
s11, sending a notice of deactivating the auxiliary member carrier to a user plane subsystem, so that the user plane subsystem determines a cache clearing strategy and determines a deactivation strategy according to the deactivation reason information;
s12, receiving a deactivation response carrying the deactivation strategy returned by the user plane subsystem;
s13, deactivating the secondary member carrier according to the deactivation strategy.
The method in the embodiment of the invention can be executed in the MAC subsystem.
For clarity of describing the embodiments of the present invention, the principle of HARQ is briefly described as follows. For example, ARQ mechanisms employ dropping packets and requesting retransmissions. Although these packets cannot be decoded correctly, they still contain useful information that, if discarded, is lost.
Including a HARQ feedback flow in the HARQ mechanism; for example, the receiving end uses an error detection code to detect whether the received data packet is erroneous. If there is no error, the receiving end will send a positive Acknowledgement (ACK) to the sending end, and after the sending end receives the ACK, the sending end will send the next data packet. If there is an error, the receiving end discards the data packet and sends a Negative Acknowledgement (NACK) to the transmitting end, and the transmitting end retransmits the same data after receiving the NACK.
And a process including "Soft combining" by using HARQ with Soft combining (HARQ with Soft combining); for example, the received error data packet is stored in a HARQ buffer and combined with the subsequently received retransmission data packet, so as to obtain a more reliable data packet than the single decoding. And then decoding the combined data packet, and repeating the process of requesting retransmission and then performing soft combination if the combined data packet still fails.
In the related scheme, when the auxiliary member carrier is deactivated, after the HARQ buffer is emptied, the MAC PDU waiting for confirmation in the buffer is immediately deleted, and at the moment, if the MAC data is not correctly received, retransmission of the upper RLC layer can be directly caused, so that the time delay of a data message is increased, the system overhead is increased, and the gain of HARQ soft combining is reduced; and when a large number of carrier aggregation users in the system are frequently deactivated, a large number of data are retransmitted in the system, which reduces the flow and increases the time delay, thereby reducing the communication performance of carrier aggregation, and affecting the user experience.
According to the method provided by the embodiment of the invention, when the auxiliary member carrier is deactivated, the auxiliary member carrier is not directly deactivated, and the notification for deactivating the auxiliary member carrier is sent to the user plane subsystem, so that the user plane subsystem determines a cache clearing strategy and determines a deactivation strategy, and then receives a deactivation response carrying the deactivation strategy returned by the user plane subsystem, and deactivates the auxiliary member carrier according to the deactivation strategy, thereby effectively reducing the retransmission probability of an RLC message in the system, effectively reducing the time delay of a data message, reducing the system overhead, increasing the gain of HARQ soft combining, enhancing the communication performance of carrier aggregation, and enhancing the user experience.
Optionally, in the embodiment of the present invention, the notification carries information about one or more of the following deactivation reasons:
poor air interface quality information, low utilization rate of physical resource blocks of the main member carrier and information with small user data volume.
The information of poor air interface quality is used for indicating the air interface quality information of which the air interface quality is less than a preset quality threshold;
the information of low utilization rate of the physical resource blocks of the main member carrier is used for indicating the information of the utilization rate of the physical resource blocks of the main member carrier, which is less than a preset utilization rate threshold value;
the information of the small user data amount is used for indicating the user data amount information of which the user data amount is smaller than a preset data amount threshold.
In the embodiment of the present invention, the deactivation cause information may adopt a form such as a cause value (cause code), for example, information with poor air interface quality is 1, information with low utilization rate of a physical resource block is 2, information with small user data amount is 3, and the like, so that transmission efficiency of the deactivation notification can be effectively improved.
In this regard, in this embodiment of the present invention, before sending the notification of deactivating the secondary component carrier carrying the deactivation reason information to the user plane subsystem, the method may further include:
determining the information of poor air interface quality according to the air interface block error rate and the channel quality indication;
determining information of low utilization rate of physical resource blocks of a main member carrier according to the occupation condition of the physical resource blocks on the main member carrier;
and determining the information with less user data according to the current user data.
For example, if the air interface quality is less than the preset quality threshold, the air interface quality is poor, and the air interface quality MAC subsystem may determine the air interface quality according to the air interface block error rate BLER and the channel quality indicator CQI.
For another example, when the Physical Resource Block utilization of the primary component carrier is smaller than the preset utilization threshold, it indicates that the primary carrier PRB (Physical Resource Block) utilization is low, and the low primary carrier PRB utilization indicates that there are redundant resources on the primary carrier, and it is not necessary to borrow secondary carrier resources (i.e., Physical Resource Block utilization information).
For another example, if the user data amount is smaller than the preset data amount threshold (which may be set according to the data amount carried by the primary component carrier), it indicates that the user data amount is reduced, and the user data can be transmitted in the primary carrier.
Optionally, in this embodiment of the present invention, the deactivation policy includes immediate deactivation and delayed deactivation.
In the related scheme, when the MAC subsystem decides to activate the auxiliary carrier, the related HARQ buffer area can be cleared simultaneously, at the moment, if the buffer area has a message which is deleted before the confirmation, the retransmission of the upper layer RLC can be caused, and in the embodiment of the invention, the problem that the retransmission of the upper layer RLC can be caused because the buffer area has a message which is deleted before the confirmation is delayed and deactivated can be effectively avoided, so that the retransmission probability of the upper layer RLC can be effectively reduced.
Wherein, when the deactivation policy is delayed deactivation, the deactivating the secondary component carrier according to the deactivation policy may further include:
stopping data new transmission scheduling;
performing retransmission scheduling according to a preset delay duration;
and deactivating the auxiliary member carrier after the retransmission scheduling is completed.
Example two
An embodiment of the present invention provides a method for deactivating a secondary component carrier, where as shown in fig. 2, the method includes:
s21, receiving the notice of deactivating the auxiliary member carrier of the media access control MAC subsystem, and determining a cache clearing strategy and a deactivation strategy;
s22, according to the buffer cleaning strategy, cleaning the data in the HARQ buffer; and
and returning a deactivation response carrying the deactivation strategy to a Media Access Control (MAC) subsystem so that the MAC subsystem deactivates the auxiliary member carrier according to the deactivation strategy.
The method in the embodiment of the invention can be executed in a user plane subsystem.
In the method of the embodiment of the invention, when the auxiliary member carrier is deactivated, the cache is not directly cleared, and the immediate deactivation indication is not directly issued, and the data in the HARQ buffer area is cleared according to the cache clearing strategy by determining the cache clearing strategy and the deactivation strategy; and returning a deactivation response carrying the deactivation strategy to a Media Access Control (MAC) subsystem, so that the MAC subsystem deactivates the auxiliary member carrier according to the deactivation strategy, thereby effectively reducing the retransmission probability of an RLC message in the system and enhancing the communication performance and the user experience of carrier aggregation.
Optionally, in this embodiment of the present invention, the determining a cache flush policy and a deactivation policy may further include:
and when judging that the hybrid automatic repeat request HARQ buffer associated with the secondary member carrier has the data waiting for the HARQ feedback, determining a buffer clearing strategy and a deactivation strategy.
Wherein, when determining that there is data waiting for HARQ feedback in the HARQ buffer associated with the secondary component carrier, determining a buffer flush policy and a deactivation policy may further include:
and when judging that the hybrid automatic repeat request HARQ buffer associated with the secondary member carrier has data waiting for HARQ feedback, determining a cache clearing strategy and a deactivation strategy according to the deactivation reason information carried in the notification.
Optionally, in this embodiment of the present invention, the cache flush policy includes immediate flush and delayed flush. Wherein the immediate clearing means immediate clearing of data in the HARQ buffer; and the delayed clearing means that the data in the HARQ buffer area is delayed to be cleared according to a preset delayed clearing time.
The deactivation policy includes immediate deactivation and delayed deactivation. Wherein the immediate deactivation indicates immediate deactivation of the secondary component carrier; and the delay deactivation means that the secondary member carrier is deactivated according to preset delay deactivation time.
Optionally, in this embodiment of the present invention, the determining a cache clearing policy and a deactivation policy according to the deactivation cause information carried in the notification includes:
determining a cache removal strategy corresponding to the deactivation reason information carried in the notification according to a preset corresponding relation between the deactivation reason information and the cache removal strategy;
and determining a deactivation strategy corresponding to the deactivation reason information carried in the notification according to a preset corresponding relation between the deactivation reason information and the deactivation strategy.
In the embodiment of the invention, through the delayed clearing and the delayed deactivation, the problem that when the auxiliary carrier is activated, the associated HARQ buffer is deleted when the message is not confirmed, which can cause the retransmission of the upper RLC is effectively avoided.
Optionally, in an embodiment of the present invention, the deactivation reason information includes one or more of the following:
poor air interface quality information, low utilization rate of physical resource blocks of the main member carrier and information with small user data volume.
For example, the information of poor quality of the air interface is used to indicate the quality information of the air interface of which the quality is less than a preset quality threshold;
the information of low utilization rate of the physical resource blocks of the main member carrier is used for indicating the information of the utilization rate of the physical resource blocks of the main member carrier, which is less than a preset utilization rate threshold value;
the information of the small user data amount is used for indicating the user data amount information of which the user data amount is smaller than a preset data amount threshold.
Optionally, in this embodiment of the present invention, the determining, according to a preset correspondence between the deactivation reason information and the cache removal policy, the cache removal policy corresponding to the deactivation reason information carried in the notification includes:
when the notification carries information with poor air interface quality, determining that the corresponding cache clearing strategy is to be cleared immediately;
when the notification carries information that the utilization rate of the physical resource block of the main member carrier is low, determining that the corresponding cache clearing strategy is delayed clearing;
and when the notification carries information of small user data amount, determining that the corresponding cache clearing strategy is delayed clearing.
Optionally, in this embodiment of the present invention, the determining, according to a preset correspondence between the deactivation reason information and the deactivation policy, the deactivation policy corresponding to the deactivation reason information carried in the notification includes:
when the notification carries information with poor air interface quality, determining that the corresponding deactivation strategy is immediately deactivated;
when the notification carries information that the utilization rate of the physical resource block of the main member carrier is low, determining that the corresponding deactivation strategy is delayed deactivation;
and when the notification carries information with less user data, determining that the corresponding deactivation strategy is delayed deactivation.
That is, if the quality of the air interface is less than the preset quality threshold, the corresponding cache removal strategy and the corresponding deactivation strategy are respectively immediate removal and immediate deactivation;
if the physical resource block utilization rate information indicates that the physical resource block utilization rate is smaller than a preset utilization rate threshold, the corresponding cache removal strategy and the corresponding deactivation strategy are delayed removal and delayed deactivation respectively;
and if the user data volume is smaller than a preset data volume threshold, the corresponding cache clearing strategy and the corresponding deactivation strategy are delayed clearing and delayed deactivation respectively.
For example, after receiving the deactivation notification of the MAC subsystem, the user plane subsystem first determines whether data is being transmitted in the HARQ buffer associated with the secondary carrier that needs to be deactivated, and waits for HARQ feedback.
If so, the user plane subsystem judges whether the HARQ buffer needs to be cleared or not according to the deactivation reason value carried by the MAC subsystem and the result of whether data is transmitted in the current HARQ buffer or not, and determines the response content of the processing result (namely the deactivation strategy) returned to the MAC subsystem.
And if the user plane subsystem judges that no data in the current associated HARQ buffer is waiting for the HARQ feedback result, returning a processing result response carrying an immediate deactivation indication to the MAC subsystem no matter what deactivation reason indication is carried by the MAC subsystem.
If the user plane subsystem judges that data waiting for the HARQ feedback result exists in the current associated HARQ buffer area, further judging:
and if the deactivation reason carried by the deactivation notification is that the air interface quality is poor, which indicates that the HARQ transmission success rate is low, clearing the associated HARQ buffer area, and returning a processing result response carrying an immediate deactivation indication to the MAC subsystem.
And if the deactivation reason carried by the deactivation notice is that the PRB utilization rate of the main carrier is low, returning a processing result to the MAC subsystem to respond to the carried delay deactivation indication.
And if the deactivation reason carried by the deactivation notice is that the data is not congested, returning a processing result response carrying delay deactivation indication to the MAC subsystem.
EXAMPLE III
The embodiment of the invention provides a method for deactivating an auxiliary member carrier, and the method in the first embodiment and the method in the second embodiment are described through interaction of an MAC subsystem, a user plane subsystem and a terminal.
In detail, in the embodiment of the present invention, in order to effectively reduce the probability of RLC packet retransmission, when the MAC subsystem determines to deactivate the secondary carrier, the MAC subsystem sends a secondary carrier deactivation notification to the user plane subsystem, and carries a deactivation reason (or a reason value), the user plane subsystem determines whether data is waiting for HARQ feedback in the HARQ buffer associated with the secondary carrier, and determines whether the HARQ buffer needs to be cleared according to the deactivation reason, and returns an activation response message to the MAC subsystem, which carries a processing result response, and the MAC subsystem performs corresponding processing according to the processing result response.
And after receiving the deactivation notice of the MAC subsystem, the user plane subsystem firstly judges whether data is transmitted in an HARQ buffer area associated with the auxiliary carrier needing to be deactivated, and waits for HARQ feedback.
If so, the user plane subsystem judges whether the HARQ buffer area needs to be cleared or not according to the deactivation reason value carried by the MAC subsystem and the result of whether data is transmitted in the current HARQ buffer area or not, and determines the response content of the processing result (namely the deactivation strategy) returned to the MAC subsystem.
And if the user plane subsystem judges that no data in the current associated HARQ buffer is waiting for the HARQ feedback result, returning a processing result response carrying an immediate deactivation indication to the MAC subsystem no matter what deactivation reason indication is carried by the MAC subsystem.
If the user plane subsystem judges that data in the current associated HARQ buffer area is waiting for the HARQ feedback result, further judging:
and if the deactivation reason carried by the deactivation notification is that the air interface quality is poor, which indicates that the HARQ transmission success rate is low, clearing the associated HARQ buffer area, and returning a processing result response carrying an immediate deactivation indication to the MAC subsystem.
And if the deactivation reason carried by the deactivation notice is that the PRB utilization rate of the main carrier is low, returning a processing result to the MAC subsystem to respond to the carried delay deactivation indication.
And if the deactivation reason carried by the deactivation notice is that the data is not congested, returning a processing result response carrying delay deactivation indication to the MAC subsystem.
Then, the MAC subsystem receives the processing of the deactivation response message:
and if the user plane subsystem deactivation response message is received and the response content is the immediate deactivation indication, the MAC subsystem stops the data retransmission scheduling and sends an auxiliary carrier deactivation indication to the terminal.
And if the user plane subsystem deactivation response message is received and the response content is the delayed deactivation indication, the MAC subsystem stops data new transmission scheduling and continues retransmission scheduling for a period of time, wherein the duration time can be the maximum retransmission time of the HARQ data, and the terminal sends the deactivation auxiliary carrier indication after the duration time is over.
Therefore, the method in the embodiment of the invention can reduce the retransmission probability of the RLC message in the system and reduce the transmission delay of the data message, thereby improving the performance of the communication system and improving the user experience.
The specific interaction flow is shown in fig. 3, and includes:
s101: the MAC subsystem meets the preset deactivation condition, needs to deactivate the auxiliary carrier, sends a deactivation notice to the user plane subsystem and carries a deactivation reason value;
s102: the user plane subsystem receives the deactivation notice, judges whether data is transmitted in a HARQ buffer area associated with the auxiliary carrier, and determines a cache removal strategy and a deactivation strategy according to a judgment result and a deactivation reason value;
s103: the user plane subsystem returns a deactivation response to the MAC subsystem and carries a deactivation strategy;
s104: and the MAC subsystem determines to carry out auxiliary carrier deactivation operation on the terminal according to the deactivation strategy in the activation response.
Example four
The embodiment of the present invention provides a method for deactivating a secondary member carrier, where deactivation is caused by low utilization of a PRB of a primary carrier in the embodiment of the present invention, as shown in fig. 4, the method includes:
s201: the MAC subsystem judges that the SCC of the carrier aggregation terminal meets the deactivation condition and decides to initiate a deactivation process;
s202: the MAC subsystem initiates a deactivation notice to the user plane subsystem, and carries a reason value that the PRB utilization rate of the main carrier is low;
s203: the user plane subsystem receives the deactivation notice and knows that the reason value is that the PRB utilization rate of the main carrier is low, and the user plane subsystem judges whether the HARQ buffer area related to the current auxiliary carrier has data being transmitted or not; if yes, executing S204; if S206 is not performed;
s204: if the data in the current HARQ buffer area is transmitted, returning a deactivation response to the MAC subsystem, wherein the response result is a delayed deactivation indication;
s205, the MAC subsystem receives the deactivation response indication, if the deactivation response indication is a delayed deactivation response indication, the MAC subsystem stops the data new transmission scheduling and continues the retransmission scheduling for a period of time, and the continuous time can be the maximum retransmission time of the HARQ data; then, S208 is executed;
s206, if no data is being transmitted in the current HARQ buffer, a deactivation response is returned to the MAC subsystem, and the carried response result is an immediate deactivation indication;
s207: if the MAC subsystem receives the deactivation response indication, if the deactivation response indication is an immediate deactivation response indication, the MAC subsystem stops the data retransmission scheduling; then, S208 is executed;
s208: the MAC subsystem sends an auxiliary carrier deactivation instruction to the terminal; of course, in specific implementation, the indication of deactivating the secondary carrier may also be sent to the terminal through other subsystems in the base station.
EXAMPLE five
An embodiment of the present invention provides a method for deactivating a secondary component carrier, where deactivation is caused by poor air interface quality in the embodiment of the present invention, as shown in fig. 5, the method includes:
s301: the MAC subsystem judges that the SCC of the carrier aggregation terminal meets the deactivation condition and decides to initiate a deactivation process;
s302: the MAC subsystem initiates a deactivation notice to the user interface subsystem, and carries a reason value as poor air interface quality;
s303: the user interface subsystem receives the deactivation notice, and if the reason value is poor in air interface quality, the related HARQ buffer area is cleared;
s304: the user plane subsystem returns a processing result response to the MAC subsystem, and carries an immediate deactivation instruction;
s305: the MAC subsystem receives the immediate deactivation response instruction, and stops the data retransmission scheduling;
s306: and the MAC subsystem sends an auxiliary carrier deactivation instruction to the terminal.
EXAMPLE six
As shown in fig. 6, an embodiment of the present invention provides a medium access control MAC apparatus, including:
a notification sending module 30, configured to send a notification of deactivating the secondary component carrier to the user plane subsystem;
a policy receiving module 32, configured to receive a deactivation response carrying a deactivation policy returned by the user plane subsystem;
a deactivation module 34, configured to deactivate the secondary component carrier according to the deactivation policy.
In detail, the user plane subsystem in the embodiment of the present invention may be regarded as a system operating in the user plane device.
Optionally, in this embodiment of the present invention, the deactivation policy includes an immediate deactivation indication and a delayed deactivation.
Optionally, the deactivation module 34 is specifically configured to:
stopping data new transmission scheduling;
performing retransmission scheduling according to a preset delay duration;
and deactivating the auxiliary carrier after the retransmission scheduling is completed.
Optionally, in the embodiment of the present invention, the notification carries one or more of the following deactivation reason information as follows:
poor air interface quality information, low utilization rate of physical resource blocks of the main member carrier and information with small user data volume.
The information of poor air interface quality is used for indicating the air interface quality information of which the air interface quality is less than a preset quality threshold;
the information of low utilization rate of the physical resource blocks of the main member carrier is used for indicating the information of the utilization rate of the physical resource blocks of the main member carrier, which is less than a preset utilization rate threshold value;
the information of the small user data amount is used for indicating the user data amount information of which the user data amount is smaller than a preset data amount threshold.
Optionally, the apparatus may further include a decision module:
the decision module is configured to:
determining the information of poor air interface quality according to the air interface block error rate and the channel quality indication;
determining information of low utilization rate of a physical resource block of a main member carrier according to the occupation condition of the physical resource block on the main member carrier;
and determining the information with less user data according to the current user data.
It should be noted that, when the embodiments of the present invention are implemented specifically, reference may be made to the above embodiments, and the technical effects described in the above embodiments are also achieved.
EXAMPLE seven
As shown in fig. 7, an embodiment of the present invention provides a user plane apparatus, including:
a policy determining module 40, configured to receive a notification of deactivating an auxiliary component carrier of a MAC subsystem, and determine a cache removal policy and a deactivation policy;
a buffer removal module 42, configured to remove the data in the HARQ buffer according to the buffer removal policy;
a response module 44, configured to return a deactivation response carrying the deactivation policy to the MAC subsystem.
In detail, optionally, in this embodiment of the present invention, the policy determining module 40 is further configured to:
and when judging that the hybrid automatic repeat request HARQ buffer associated with the secondary member carrier has the data waiting for the HARQ feedback, determining a buffer clearing strategy and a deactivation strategy.
Optionally, in this embodiment of the present invention, when determining that there is data waiting for HARQ feedback in the hybrid automatic repeat request HARQ buffer associated with the secondary component carrier, determining a buffer flush policy and a deactivation policy may further include:
and when judging that the hybrid automatic repeat request HARQ buffer associated with the secondary member carrier has data waiting for HARQ feedback, determining a cache clearing strategy and a deactivation strategy according to the deactivation reason information carried in the notification.
Wherein, the determining a cache clearing policy and a deactivation policy according to the deactivation reason information carried in the notification includes:
determining a cache removal strategy corresponding to the deactivation reason information carried in the notification according to a preset corresponding relation between the deactivation reason information and the cache removal strategy;
and determining a deactivation strategy corresponding to the deactivation reason information carried in the notification according to a preset corresponding relation between the deactivation reason information and the deactivation strategy.
Optionally, in this embodiment of the present invention, the cache flush policy includes immediate flush and delayed flush;
the deactivation policy includes immediate deactivation and delayed deactivation.
The medium access control MAC subsystem in the embodiments of the present invention may be considered as a system operating in a medium access control MAC device.
Wherein the deactivation reason information comprises one or more of the following:
poor air interface quality information, low utilization rate of physical resource blocks of the main member carrier and information with small user data volume.
For example, the information of poor quality of the air interface is used to indicate the quality information of the air interface of which the quality is less than a preset quality threshold;
the information of low utilization rate of the physical resource blocks of the main member carrier is used for indicating the information of the utilization rate of the physical resource blocks of the main member carrier, which is less than a preset utilization rate threshold value;
the information of the small user data amount is used for indicating the user data amount information of which the user data amount is smaller than a preset data amount threshold.
Optionally, in this embodiment of the present invention, the determining, according to a preset correspondence between the deactivation reason information and the cache removal policy, the cache removal policy corresponding to the deactivation reason information carried in the notification includes:
when the notification carries information with poor air interface quality, determining that the corresponding cache clearing strategy is to be cleared immediately;
when the notification carries information that the utilization rate of the physical resource block of the main member carrier is low, determining that the corresponding cache clearing strategy is delayed clearing;
and when the notification carries information of small user data amount, determining that the corresponding cache clearing strategy is delayed clearing.
Optionally, in this embodiment of the present invention, the determining, according to a preset correspondence between the deactivation reason information and the deactivation policy, the deactivation policy corresponding to the deactivation reason information carried in the notification includes:
when the notification carries information with poor air interface quality, determining that the corresponding deactivation strategy is immediately deactivated;
when the notification carries information that the utilization rate of the physical resource block of the main member carrier is low, determining that the corresponding deactivation strategy is delayed deactivation;
and when the notification carries information with less user data, determining that the corresponding deactivation strategy is delayed deactivation.
It should be noted that, when the embodiments of the present invention are implemented specifically, reference may be made to the above embodiments, and the technical effects described in the above embodiments are also achieved.
Example eight
The embodiment of the invention provides a system for deactivating an auxiliary member carrier, which comprises a Media Access Control (MAC) device in the sixth embodiment and a user plane device in the seventh embodiment.
Example nine
The embodiment of the invention provides a computer readable storage medium, wherein the storage medium is stored with a computer program 1 for deactivating an auxiliary member carrier of a Media Access Control (MAC) subsystem and/or a computer program 2 for deactivating the auxiliary member carrier of a user plane subsystem;
the computer program 1, when executed by at least one processor, is adapted to carry out the steps of the method according to any one of the embodiments;
the computer program 2, when executed by at least one processor, is adapted to carry out the steps of the method according to any one of the second embodiments.
Of course, when the embodiments of the present invention are specifically implemented, reference may also be made to the above embodiments, and corresponding technical effects are also achieved.
Computer-readable storage media in embodiments of the invention may be RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage media known in the art. A storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium; or the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (15)
1. A method of deactivating a secondary component carrier, the method comprising:
sending a notice for deactivating the auxiliary member carrier to a user plane subsystem;
receiving a deactivation response carrying a deactivation strategy returned by the user plane subsystem;
and deactivating the secondary member carrier according to the deactivation strategy.
2. The method of claim 1, wherein the notification carries deactivation cause information for one or more of:
poor air interface quality information, low utilization rate of physical resource blocks of the main member carrier and information with small user data volume.
3. The method of claim 2, wherein prior to sending the notification to the user plane subsystem to deactivate the secondary component carrier, one or more of:
determining the information of poor air interface quality according to the air interface block error rate and the channel quality indication;
determining information of low utilization rate of a physical resource block of a main member carrier according to the occupation condition of the physical resource block on the main member carrier;
and determining the information with less user data according to the current user data.
4. A method according to any of claims 1-3, wherein the deactivation strategy comprises immediate deactivation and delayed deactivation.
5. The method of claim 4, wherein deactivating the secondary component carrier according to the deactivation policy when the deactivation policy is delayed deactivation comprises:
stopping the data new transmission scheduling;
performing retransmission scheduling according to a preset delay duration;
and deactivating the auxiliary member carrier after the retransmission scheduling is completed.
6. A method of deactivating a secondary component carrier, the method comprising:
receiving a notice of deactivating an auxiliary member carrier of a Media Access Control (MAC) subsystem, and determining a cache clearing strategy and a deactivation strategy;
clearing data in the HARQ buffer area according to the cache clearing strategy; and
and returning a deactivation response carrying the deactivation strategy to the MAC subsystem.
7. The method of claim 6, wherein the determining a cache flush policy and a deactivation policy further comprises:
and when judging that the hybrid automatic repeat request HARQ buffer associated with the secondary member carrier has the data waiting for the HARQ feedback, determining a buffer cleaning strategy and a deactivation strategy.
8. The method of claim 7, wherein determining a buffer flush policy and a deactivation policy upon determining that there is data waiting for HARQ feedback in a hybrid automatic repeat request (HARQ) buffer associated with the secondary component carrier, further comprises:
and when judging that the hybrid automatic repeat request HARQ buffer associated with the secondary member carrier has data waiting for HARQ feedback, determining a cache clearing strategy and a deactivation strategy according to the deactivation reason information carried in the notification.
9. The method of claim 8, wherein the determining a cache flush policy and a deactivation policy according to the deactivation cause information carried in the notification comprises:
determining a cache removal strategy corresponding to the deactivation reason information carried in the notification according to a preset corresponding relation between the deactivation reason information and the cache removal strategy;
and determining a deactivation strategy corresponding to the deactivation reason information carried in the notification according to a preset corresponding relation between the deactivation reason information and the deactivation strategy.
10. The method of any of claims 7-9, wherein the deactivation cause information includes one or more of:
poor air interface quality information, low utilization rate of physical resource blocks of the main member carrier and information with small user data volume.
11. The method of claim 10, wherein the determining, according to a preset correspondence between the deactivation cause information and the cache removal policy, the cache removal policy corresponding to the deactivation cause information carried in the notification includes:
when the notification carries the information with poor air interface quality, determining that the corresponding cache clearing strategy is to be cleared immediately;
when the notification carries the information that the utilization rate of the physical resource block of the main member carrier is low, determining that the corresponding cache clearing strategy is delayed clearing;
and when the notification carries the information of small user data amount, determining that the corresponding cache clearing strategy is delayed clearing.
12. The method according to claim 10, wherein the determining, according to a preset correspondence between deactivation cause information and deactivation policies, a deactivation policy corresponding to the deactivation cause information carried in the notification includes:
when the notification carries the information with poor air interface quality, determining that the corresponding deactivation strategy is immediately deactivated;
when the notification carries information that the utilization rate of the physical resource block of the main member carrier is low, determining that the corresponding deactivation strategy is delayed deactivation;
and when the notification carries the information with less user data, determining that the corresponding deactivation strategy is delayed deactivation.
13. A medium access control, MAC, apparatus, the apparatus comprising:
a notification sending module, configured to send a notification of deactivating the secondary component carrier to the user plane subsystem;
the strategy receiving module is used for receiving a deactivation response carrying the deactivation strategy returned by the user plane subsystem;
a deactivation module, configured to deactivate the secondary component carrier according to the deactivation policy.
14. A user plane apparatus, characterized in that the apparatus comprises:
the strategy determining module is used for receiving a notice of deactivating the auxiliary member carrier of the Media Access Control (MAC) subsystem and determining a cache clearing strategy and a deactivation strategy;
the buffer clearing module is used for clearing data in the HARQ buffer area according to the buffer clearing strategy;
and the response module is used for returning a deactivation response carrying the deactivation strategy to the MAC subsystem.
15. A computer-readable storage medium storing a first computer program for deactivating a secondary component carrier for a medium access control, MAC, subsystem and/or a second computer program for deactivating a secondary component carrier for a user plane subsystem;
the first computer program is for implementing the steps of the method according to any one of claims 1-5 when executed by at least one processor;
the second computer program is adapted to carry out the steps of the method according to any of claims 6-12 when executed by at least one processor.
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