CN101583178A - Method and device for dynamically controlling discontinuous reception of UE - Google Patents

Abstract

The present invention discloses a method and device for dynamically controlling discontinuous reception of user equipment, including: when user equipment initially establishes a connection, the network side notifies the user equipment of parameters used in the process of performing discontinuous reception through downlink signaling; user equipment service connection During this period, after each scheduling moment ends, the network side determines how to dynamically adjust the discontinuous reception process of the user equipment according to the discontinuous reception process performed by the user equipment at the previous moment and the number of data packets waiting to be sent in the service queue established for the user equipment. Receiving process; the network side determines how to adjust the result of the discontinuous reception process of the user equipment according to the method, sets the DRX flag indicating to the user equipment to change the discontinuous reception process, and sets the DRX flag when the user equipment receiver is turned on state; the user equipment executes different discontinuous reception processes according to the received DRX flag, and adaptively adjusts parameters in the discontinuous reception process.

Description

Method and device for dynamically controlling discontinuous reception of user equipment

technical field

The present invention relates to discontinuous reception (Discontinuous Receive, DRX) technology, in particular to a method and device for dynamically controlling discontinuous reception of user equipment.

Background technique

With the rapid development of mobile communication technology, the processing capability of mobile terminals is rapidly enhanced, and the functions provided are rapidly increased. While the future mobile communication system provides higher spectrum utilization, higher data rate, and more colorful multimedia services, the problem of power consumption of its terminals is also more severe. In particular, the access network of the future mobile communication system will be based on IP technology for data transmission, and the burst characteristics of IP data packets and the sharing characteristics of transmission channels among users make the data arriving at user equipment discontinuous. Therefore, how to It is more important to save the energy consumption of the user equipment. Many communication standardization organizations have added energy-saving considerations when formulating relevant standards.

At present, typical energy-saving mechanisms in mobile communication systems include three types of power saving (Power Saving Class, PSC) in IEEE's latest WMAN standard 802.16e and the "Discontinuous Receive" (Discontinuous Receive, DRX) mechanism in cellular networks.

The IEEE 802.16e standard stipulates that each mobile terminal (Mobile Station, MS) has two working modes: active and dormant. In sleep mode, the MS executes the sleep cycle negotiated with the base station BS. In these cycles, there is no data interaction between the MS and the serving BS, and the MS can turn off related physical devices, thereby reducing MS power consumption and saving the base station ( BaseStation, BS) air interface resource purpose. When the MS is in a dormant state, the BS buffers the service data units sent to the MS. At the end of each active mode, a dormancy message negotiation is performed between the MS and the BS to initiate the dormancy mode. After the two confirm the dormancy message, the normal data transmission is terminated at the negotiated time point, the activation mode ends, the MS enters the dormancy mode, sleeps at a certain interval, and then wakes up to confirm whether it needs to receive data. This temporary wake-up state is called the listening interval. In the monitoring interval, the MS monitors the information about the service indication in the broadcast information of the BS. If the message indicates that there is data in the BS that needs to be sent to the MS, the MS will enter the active mode; otherwise, the MS will remain in the sleep mode and start the next sleep interval. In sleep mode, each service connection can be associated with an appropriate power saving type according to its own characteristics. A power saving type is defined as a group of connections with the same requirements. There are 3 types of power saving in 802.16e, each type has different parameter sets, suitable services and execution procedures. The first type (Type I) is suitable for best-effort and non-real-time variable rate services. The second type (Type II) is suitable for active authorization services and real-time variable rate services. The third type (Type III) is suitable for multicast connections and management-related operations.

In the Global System for Mobile communications (GSM) system, the mobile station only wakes up every few "multi-frames" (equivalent to about one-eighth of a second), and sleeps all the time state. The system can instruct the mobile station to wake up 4 times per second to check for incoming calls, or about 1 time per second to check for incoming calls. In DRX operation, the processor will turn off the receiver and put itself into a low-power sleep mode. The processor is restarted by an internal timer after the appropriate sleep time.

Under the DRX mechanism in the 3G Universal Mobile Telecommunications System (UMTS), the user equipment receiver has three active states:

1. Activation period: During the activation period, the user equipment turns on the receiver to receive data packets from the network side.

2. Deactivation period: when there is no data to be sent to the user equipment in the buffer on the network side, the user equipment starts a deactivation timer and enters the deactivation period. If data arrives at the corresponding data buffer on the network side before the timer expires, the timer stops, ends the deactivation period, and starts the next activation period; if no data packet arrives at the corresponding data buffer on the network side before the timer expires , the deactivation period ends, the user equipment turns off the receiver, and enters the dormancy period.

3. Dormancy period: during the dormancy period, the user equipment enters the DRX mode. The sleep period includes at least one DRX cycle. At the end of each DRX cycle, the UE will turn on the receiver to monitor the paging channel. The paging message is used to indicate whether a data packet has arrived at the corresponding data buffer on the network side in the previous DRX cycle. If so, the dormancy period is terminated, and the user equipment starts to receive data packets from the network side; if no data packet arrives at the corresponding data buffer on the network side, the user equipment enters the next DRX cycle and continues the dormancy period.

The activation period and the deactivation period belong to the power activation mode. In this mode, the user equipment receiver is turned on, and the network side can send data packets to the user equipment. The dormancy period belongs to a power saving mode, in which the receiver of the user equipment is turned off, and the network side does not send data packets to the user equipment.

In a Long Term Evolution (Long Term Evaluation, LTE) system, the network side configures DRX cycle parameters for each user equipment. A DRX cycle consists of an active period and a dormant period. The activation period in turn includes an on-duration and a deactivation period. In this case, the user equipment receiver has the following 4 active states:

1. On duration: the user equipment wakes up from the sleep period and enters the on duration. During the on-duration, the user equipment receives information of a physical downlink control channel (Physical Downlink Control Channel, PDCCH). On the PDCCH channel, there is signaling information related to the user equipment notified by the network side to the user equipment, such as confirmation, power control, resource allocation and reallocation and other control messages related to resource allocation. If the user equipment can successfully decode the information of the PDCCH signal, it starts the deactivation timer and enters the deactivation period; otherwise, the user equipment enters the dormancy period after the on-duration ends.

2. Deactivation period: After the user equipment successfully decodes the PDCCH channel, the user equipment starts the deactivation timer and enters the deactivation period. During the deactivation period, the user equipment continues to monitor the PDCCH and related control channels. If the user equipment successfully decodes the PDCCH and related control channels before the deactivation timer expires, then restart the deactivation timer and enter the deactivation period again; otherwise, the user equipment enters the deactivation period from the deactivation period after the deactivation timer expires. dormant period.

3. Activation period: the time during which the user equipment receiver is turned on (including the turn-on duration and the deactivation period) belongs to the activation period.

4. Dormancy period: the receiver of the user equipment is turned off during the dormancy period.

It can be seen from the above introduction that in the energy-saving mechanism of 802.16e, GSM and UMTS systems, once the number of data packets in the service queue established by the network side for the user equipment is greater than zero, the user terminal performs a continuous receiving process. Only when the number of data packets in the service queue is equal to zero, is it possible for the user equipment to perform the discontinuous reception process. However, in the energy-saving mechanism of LTE, even if there are data packets in the service queue, the user equipment can also perform the discontinuous reception process. Therefore, compared with 802.16e, GSM and UMTS systems, user terminals in the LTE system have better energy saving performance.

However, the DRX mechanism of the current LTE system does not consider the change of the number of data packets in the service queue established by the network side for the user equipment at all, so it is impossible to dynamically and adaptively adjust the parameters in the DRX mechanism according to the number of data packets, for example The length of the sleep period, the length of the deactivation timer, etc.

Contents of the invention

In view of this, the object of the present invention is to propose a method and device for dynamically controlling DRX of user equipment, so as to realize dynamic and adaptive adjustment of the DRX DRX process of the user equipment.

Based on the above purpose, the present invention provides a method for dynamically controlling discontinuous reception of user equipment, including:

Step 1: When the user equipment initially establishes a connection, the network side notifies it of the initial values of the parameters used in the discontinuous reception process through downlink signaling;

Step 2: During the service connection of the user equipment, after the end of each scheduling time, the network side according to the discontinuous reception process established for the user equipment at the previous moment and the number of data packets waiting to be sent in the service queue established for the user equipment, Dynamically determine how to adjust the discontinuous reception process of the user equipment;

Step 3: According to the result of adjusting the discontinuous reception process of the user equipment determined in step 2, the network side sets the DRX flag indicating to the user equipment to change the discontinuous reception process, and sets the set DRX flag when the user equipment receiver is in the open state sent to the user's device; and

Step 4: The user equipment performs a corresponding discontinuous reception process according to the received DRX flag, and adaptively adjusts parameters in the discontinuous reception process.

Optionally, the method further sets deactivation timer-I and deactivation timer-II to control the scheduling time;

The discontinuous reception process performed by the user equipment includes: DRX process-I, DRX process-II, DRX process-III and DRX process-IV;

During the DRX process-I, the user equipment controls its receiver to alternately be in the deactivation period-I and the dormancy period;

During the DRX process-II, the user equipment controls its receiver to be in the deactivation period-II;

In DRX process-III, the user equipment controls its receiver to be in the listening period and the dormant period alternately;

During the DRX process-IV, the user equipment is alternately in the deactivation period-I and the dormancy period;

in,

The deactivation period-I is the length of time that the user equipment receiver is in the open state during the preset deactivation timer-I running time;

The deactivation period-II is the duration during which the user equipment receiver is in the on state within the preset deactivation timer-II running time;

The listening period is when the receiver of the user equipment is turned on to receive the DRX flag, and its longest duration is notified by the network side through downlink signaling when the user equipment initially establishes a connection;

The dormant period means that the receiver of the user equipment is in the off state, and the initial value and the maximum duration of the duration are notified by the network side through downlink signaling when the user equipment initially establishes a connection.

Optionally, when the method is in the DRX process-I, the maximum running time of the deactivation timer-I is its initial value, and the duration of the dormancy period is its initial value;

In DRX process-III, the duration of the sleep period is adaptively adjusted;

During the DRX process-IV, the maximum running time of the deactivation timer-I is adaptively adjusted, and the duration of the sleep period is its initial value.

Optionally, the parameters described in step 1 of the method include: the initial value of the longest running time of the deactivation timer-I; the maximum value of the longest running time of the deactivation timer-I; the maximum value of the longest running time of the deactivation timer-II; The maximum value of the longest running time; the duration of the listening period; the initial value of the duration of the sleep period; the maximum value of the duration of the sleep period.

Optionally, the method executes the DRX process-1 at the user equipment at the previous moment, and in step 2, the network side determines how to dynamically adjust the discontinuous reception process of the user equipment including:

If after the current scheduling time ends, the number of data packets waiting to be sent in the service queue established by the network side for the user equipment is 0, then the determined adjustment result is: control the user equipment to stop executing the DRX process-I and start executing the DRX process -II;

If after the current scheduling time ends, the number of data packets waiting to be sent in the service queue established by the network side for the user equipment has been greater than the threshold set by the network side for N consecutive time units since the user equipment starts to execute the DRX process-I again value, then the determined adjustment result is: control the user equipment to stop executing the DRX process-I and start executing the DRX process-IV;

If the number of data packets waiting to be sent in the service queue established by the network side for the user equipment does not meet the above two conditions after the end of the current scheduling time, then the determined adjustment result is: the discontinuous reception process of the user equipment remains constant.

Optionally, in this method, the user equipment performs DRX process-II at the previous moment, and in step 2, the network side determines how to dynamically adjust the discontinuous reception process of the user equipment including:

If the number of data packets waiting to be sent in the service queue established by the network side for the user equipment is not zero after the current scheduling time ends, then the determined adjustment result is: control the user equipment to stop executing DRX process-II and start executing DRX Process-I;

If after the current scheduling time ends, the number of data packets waiting to be sent in the service queue established by the network side for the user equipment is zero, and the DRX process-II ends automatically, then the determined adjustment result is: control the user equipment to perform the DRX process -III;

If after the current scheduling time ends, the number of data packets waiting to be sent in the service queue established by the network side for the user equipment is zero, and the DRX process-II has not automatically ended, then the determined adjustment result is: control the user equipment to continue Execute DRX procedure-II.

Optionally, in this method, the user equipment performs DRX process-III at the previous moment, and in step 2, the network side determines how to dynamically adjust the discontinuous reception process of the user equipment including:

If after the current scheduling time ends, the number of data packets waiting to be sent in the service queue established by the network side for the user equipment is not zero, then the determined adjustment result is: control the user equipment to stop executing DRX process-III and start executing DRX Process-I;

If the number of data packets waiting to be sent in the service queue established by the network side for the user equipment is zero after the current scheduling time ends, then the determined adjustment result is: control the user equipment to continue to perform DRX procedure-III.

Optionally, in the method, the user equipment performs the DRX process-IV at the previous moment, and in step 2, the network side determines how to dynamically adjust the discontinuous reception process of the user equipment including:

If after the current scheduling time ends, the number of data packets waiting to be sent in the service queue established by the network side for the user equipment has been smaller than the number set by the network side for N consecutive time units since the user equipment starts or restarts to execute the DRX process-IV threshold value, then the determined adjustment result is: control the user equipment to stop executing the DRX process-IV and start executing the DRX process-I;

If after the current scheduling time ends, the number of data packets waiting to be sent in the service queue established by the network side for the user equipment has been greater than the number set by the network side for N consecutive time units since the user equipment starts or restarts to execute the DRX process-IV threshold value, then the determined adjustment result is: control the user equipment to stop executing the current DRX process-IV, and start to execute the new DRX process-IV;

If after the current scheduling time ends, the number of data packets waiting to be sent in the service queue established by the network side for the user equipment does not meet the above two conditions, then the determined adjustment result is: the discontinuous reception process of the user equipment constant.

Optionally, in the method, the user equipment executes the DRX process-1 at the previous moment, and the step of setting the DRX flag indicating to the user equipment to change the discontinuous reception process according to the adjustment result determined in the step 2 in step 3 includes:

If it is determined to start the DRX process-II, then set the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and set the corresponding MACcontrol element to 0;

If it is determined to start the DRX process-IV, then set the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and set the corresponding MACcontrol element to 1;

If it is determined to continue to execute the DRX process-I, then there is no need to send the MAC PDU or the Sub-header whose field LCID is set to "11110" does not need to be sent when the MAC PDU is sent.

Optionally, in the method, the user equipment executes the DRX process-II at the previous moment, and the step of setting the DRX flag indicating to the user equipment to change the discontinuous reception process according to the adjustment result determined in the step 2 in step 3 includes:

If it is determined to start the DRX process-I, then only set the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and there is no need to send the corresponding MAC control element;

If it is determined to start the DRX process-III, then there is no need to send the MAC PDU or the Sub-header whose field LCID is set to "11110" does not need to be sent when the MAC PDU is sent.

Optionally, in the method, the user equipment executes DRX process-III at the previous moment, and the step of setting the DRX flag indicating to the user equipment to change the discontinuous reception process according to the adjustment result determined in step 2 in step 3 includes:

If it is determined to start the DRX process-I, then only set the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and there is no need to send the corresponding MAC control element;

If it is determined to continue to execute the DRX process-III, then there is no need to send the MAC PDU or the Sub-header with the field LCID set to "11110" is not required to be sent when the MAC PDU is sent.

Optionally, in the method, the user equipment executes the DRX process-IV at the previous moment, and the step of setting the DRX flag indicating to the user equipment to change the discontinuous reception process according to the adjustment result determined in the step 2 in step 3 includes:

If it is determined to start the DRX process-I, then set the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and set the corresponding MACcontrol element to 0;

If it is determined to start the new DRX process-IV, then set the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and set the corresponding MACcontrol element to 1;

If it is determined to continue the current DRX process-IV, then there is no need to send the MAC PDU or the Sub-header with the field LCID set to "11110" is not required to be sent when the MAC PDU is sent.

Optionally, in step 4 of the method, the user equipment executing the DRX process-I includes: when the user equipment starts to execute the DRX process-I, first controlling its receiver to be in the deactivation period-I.

Optionally, when the user equipment controls its receiver to be in the deactivation period-I, the method further includes:

If the user equipment receives control information and data packets but does not receive DRX flag information before the current deactivation timer-I expires, then stop the current deactivation timer-I and start a new deactivation timer- I, control its receiver to stay in the activation period-I;

If the user equipment still has not received control information and data packets when the current deactivation timer-I expires, and has not received the DRX flag information, then after the current deactivation timer-I expires, control its receiver Enter the dormancy period; after the dormancy period ends, control its receiver to re-enter the deactivation period-I;

If the user equipment receives control information and data packets before the end of the current deactivation timer-I, and receives the DRX flag at the same time, and the MAC control element in it is "1", then stop the current deactivation timer-I, and the user Device k starts to execute DRX process-IV;

If the user equipment does not receive control information and data packets before the end of the current deactivation timer-I, but receives the DRX flag, and the MAC control element in it is "1", then stop the current deactivation timer-I, The user equipment starts to execute the DRX process-IV;

If the user equipment receives control information and data packets before the end of the current deactivation timer-I, and receives the DRX flag at the same time, and the MAC control element in it is "0", then stop the current deactivation timer-I, and at the same time Start the deactivation timer-II, and the user equipment starts to execute the DRX process-II.

Optionally, in step 4 of the method, the user equipment executing the DRX procedure-II includes: when the user equipment starts to execute the DRX procedure-II, first controlling its receiver to be in the activation period-II.

Optionally, when the user equipment controls its receiver to be in the deactivation period-II, the method further includes:

If the DRX flag is received before the deactivation timer-II expires, when the DRX flag is received, the user equipment stops the deactivation timer-II and starts to execute the DRX process-I;

If no DRX flag is received at the end of the deactivation timer-II, the user equipment starts to execute the DRX procedure-III after the end of the deactivation timer-II.

Optionally, in step 4 of the method, the user equipment executing the DRX process-III specifically includes: when the user equipment starts to execute the DRX process-III, first controlling its receiver to be in a dormant period, and after the dormant period ends, the user equipment controls its The receiver enters the listening period.

Optionally, when the user equipment controls its receiver to be in the monitoring period, the method further includes:

If the user equipment receives the DRX flag, then after receiving the DRX flag, the user equipment will immediately control its receiver to stop the listening period, and start to execute the DRX process-I;

If the user equipment does not receive the indicator, then after the listening period ends, the user equipment controls its receiver to enter a sleep period. After the dormant period ends, the user equipment controls its receiver to re-enter the de-listening period.

Optionally, in step 4 of the method, the user equipment executing the DRX procedure-IV specifically includes: when the user equipment starts to execute the DRX procedure-IV, first controlling its receiver to be in the deactivation period-I.

Optionally, when the user equipment controls its receiver to be in the deactivation period-I, the method further includes:

If the user equipment receives control information and data packets but does not receive DRX flag information before the current deactivation timer-I expires, then stop the current deactivation timer-I and start a new deactivation timer- I, control its receiver to stay in the activation period;

If the user equipment still does not receive control information and data packets when the current deactivation timer-I expires, and does not receive the DRX flag information at the same time, then after the current deactivation timer-I expires, the user equipment controls its The receiver enters a sleep period. After the dormancy period ends, the user equipment controls its receiver to re-enter the deactivation period;

If the user equipment receives control information and data packets before the end of the current deactivation timer-I, and receives the DRX flag at the same time, and the MAC control element in it is "1", then stop the current deactivation timer-I, and the user equipment Device k starts to execute a new DRX process-IV;

If the user equipment does not receive control information and data packets before the end of the current deactivation timer-I, but receives the DRX flag, and the MAC control element in it is "1", then stop the current deactivation timer-I, The user equipment performs a new DRX procedure-IV;

If the user equipment receives control information and data packets before the end of the current deactivation timer-I, and receives the DRX flag at the same time, and the MAC control element in it is "0", then stop the current deactivation timer-I, and the user The device performs DRX procedure-I.

Optionally, the method adaptively adjusts the duration of the dormancy period when the user equipment executes the DRX process-III in step 4.

Optionally, the adjustment of the duration of the dormancy period in this method includes: when the user equipment controls its receiver to enter the dormancy period for the l (l≥1) time in DRX process-III, the duration of the dormancy period The length is calculated as follows:

${\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; the\; s</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; min</span>}<span\; class="notranslate">\; \{</span>\mathrm{<span\; class="notranslate">\; f</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; the\; s</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 0</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; the\; s</span>}}^{\mathrm{<span\; class="notranslate">\; MAX</span>}}<span\; class="notranslate">\; \}</span>$

Where T _s (0) represents the initial value of the duration of the dormancy period; T _s ^MAX represents the maximum value of the duration of the dormancy period; f(T _s (0)) is a function of any form of T _s (0).

Optionally, the method adaptively adjusts the maximum on-time of the deactivation timer-I when the user equipment executes the DRX procedure-IV in step 4.

Optionally, the method for adjusting the maximum on-time of the deactivation timer-I is: when the user equipment starts the mth (m≥1) DRX process-IV, assuming that the deactivation timer just ended The maximum duration of -I is T _i ^I (m-1), then in the mth DRX process-IV, the maximum running time of the deactivation timer-I is calculated as follows:

${\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}^{\mathrm{<span\; class="notranslate">\; I</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; min</span>}<span\; class="notranslate">\; \{</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}^{\mathrm{<span\; class="notranslate">\; I</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 0</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}^{\mathrm{<span\; class="notranslate">\; I</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; MAX</span>}}<span\; class="notranslate">\; \}</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; \&Greater\; Equal;</span>\mathrm{<span\; class="notranslate">\; 1</span>}$

Where T _i ^I (0) represents the initial value of the longest running time of the deactivation timer-I; T _i ^I-MAX represents the maximum value of the longest running time of the deactivation timer-I; g(T _i ^I (0) ) is a function of any form of T _i ^I (0).

In another aspect of the present invention, a device for dynamically and adaptively controlling discontinuous reception of user equipment based on the above method is also provided. The device is set in a base station and includes:

A service queue module, configured to cache data packets sent to the user equipment;

DRX flag setting module: used to dynamically adjust the user equipment to perform the discontinuous reception process according to the number of data packets in the user equipment service queue, and further set the DRX flag indicating that the user equipment performs the discontinuous reception process change;

The transmitter module is used for transmitting the generated control information, data packet and DRX flag.

In another aspect of the present invention, a device for dynamically and adaptively controlling discontinuous reception of user equipment based on the above method is also provided. The device is set in user equipment, including:

A receiver module, configured to receive control information, data packets and the DRX flag from the base station side;

A control information, data packet, and DRX flag decoding module, configured to decode received control information, service data, and the DRX flag; and

The discontinuous reception control module is configured to determine the discontinuous reception process performed by the user equipment according to the DRX flag, and further control the receiver to enter different active states according to the performed discontinuous reception process.

It can be seen from the above that the method and device for dynamically controlling discontinuous reception of user equipment provided by the present invention dynamically and adaptively adjust the The DRX discontinuous reception process of the device, and notify the user equipment of the adjustment command through the DRX flag; the user equipment can adaptively change the parameters of the discontinuous reception process during the discontinuous reception process, so as to realize the energy saving of the user equipment A good performance compromise between performance and data transmission rate performance, so that when the number of data packets sent to the user equipment is zero, the user equipment can efficiently obtain energy-saving gains; when the number of data packets sent to the user equipment is long When the time is accumulating, the user equipment can obtain a higher data transmission rate.

Description of drawings

FIG. 1 is a schematic diagram of a DRX control device at a network side base station according to an embodiment of the present invention;

2 is a schematic flow diagram of a DRX flag setting module dynamically adjusting a user equipment to perform a discontinuous reception process according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the format of a MAC PDU in an LTE system for carrying a DRX flag according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a DRX control device on the user equipment side according to an embodiment of the present invention;

FIG. 5 is a schematic flow diagram of a user equipment performing DRX process-I according to an embodiment of the present invention;

FIG. 6 is a schematic flow diagram of a user equipment executing DRX process-II according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of user equipment performing DRX process-III according to an embodiment of the present invention;

FIG. 8 is a schematic flow diagram of a user equipment performing DRX procedure-IV according to an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

According to the method for dynamically controlling discontinuous reception of user equipment provided by the present invention, it mainly includes the following steps:

Step 1: When the user equipment initially establishes a connection, the network side notifies it of the initial values of the parameters used in the discontinuous reception process through downlink signaling;

Step 2: During the service connection of the user equipment, after the end of each scheduling time, the network side waits in the service queue established for the user equipment according to the discontinuous reception process performed by the user equipment at the previous time (that is, the last determined) The number of data packets sent determines how to dynamically adjust the discontinuous reception process of the user equipment;

Step 3: The network side sets the DRX flag indicating to the user equipment to change the discontinuous reception process according to the result of determining how to adjust the discontinuous reception process of the user equipment, and sets the set DRX flag when the user equipment receiver is in the on state sent to user equipment;

Step 4: The user equipment executes different discontinuous reception processes according to the received DRX flag, and adaptively adjusts parameters in the discontinuous reception process.

According to another aspect of the present invention, an apparatus for dynamically adaptively controlling a discontinuous reception process of a user equipment is provided, including:

set in the base station,

A service queue module, configured to cache data packets sent to the user equipment;

DRX flag setting module: used to dynamically adjust the user equipment to perform the discontinuous reception process according to the number of data packets in the user equipment service queue, and further set the DRX flag indicating that the user equipment performs the discontinuous reception process change;

a transmitter module for transmitting generated control information, data packets and DRX flags, and

set in the user's device,

A receiver module, configured to receive control information, data packets and the DRX flag from the base station side;

A control information, data packet, and DRX flag decoding module, configured to decode received control information, service data, and the DRX flag; and

The discontinuous reception control module is configured to determine the discontinuous reception process performed by the user equipment according to the DRX flag, and further control the receiver to enter different active states according to the performed discontinuous reception process.

Before the embodiments of the present invention are described in detail, first explain the definitions of several related terms used in the present invention:

Deactivation timer-I: used to control the duration of the user equipment receiver in the deactivation period-I, the initial value of the longest running time and the maximum value of the longest running time are determined by the user equipment when the user equipment initially establishes a connection The network side notifies through downlink signaling;

Deactivation timer-II: used to control the duration of the user equipment receiver being in the deactivation period-II, and its longest running time is notified by the network side through downlink signaling when the user equipment initially establishes a connection;

Deactivation period-I: The length of time the UE receiver is on during the deactivation timer-I runtime, which depends on the actual runtime of each deactivation timer-I and the deactivation timing of the continuous running The number of device-I;

Deactivation Period-II: The duration during which the UE receiver is on during the Deactivation Timer-II runtime. It depends on the actual running time of the deactivation timer-II; wherein, what the deactivation timer-I reflects is the time interval at which the user group is scheduled; what the deactivation timer-H reflects is the time interval at which the group arrives, both The duration of can be set arbitrarily, either the same or different;

Listening period: The receiver of the user equipment is turned on to receive the DRX flag, and the longest duration is notified by the network side through downlink signaling when the user equipment initially establishes a connection;

Dormancy period: the receiver of the user equipment is in the off state, and the initial value and the maximum value of the duration are notified by the network side through downlink signaling when the user equipment initially establishes a connection;

DRX procedure-I: this procedure is defined as that the user equipment controls its receiver to be in deactivation period-I and dormancy period alternately. The maximum running time of the deactivation timer-I is its initial value; the duration of the dormant period is its initial value;

DRX procedure-II: This procedure is defined as that the user equipment controls its receiver to be in the deactivation period-II.

DRX process-III: This process is defined as that the user equipment controls its receiver to be in the listening period and the dormant period alternately. The duration of the sleep period can be adaptively adjusted.

DRX process-IV: this process is defined as that the user equipment is alternately in the deactivation period-I and the dormancy period. The maximum running time of the deactivation timer-I can be adaptively adjusted; the duration of the sleep period is its initial value.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

First, when the user equipment initially establishes a connection, the network side notifies it of the parameters used in the discontinuous reception process through downlink signaling. Specifically include:

Deactivate the initial value of the maximum running time of timer-I: T _i ^I (0);

The maximum value of the longest running time of the deactivation timer-I: T _i ^I-MAX

Maximum running time of deactivation timer-II: T _i ^II ;

The longest duration of the monitoring period: T _o ;

Initial value of sleep period duration: T _s (0);

Maximum value of sleep period duration: T _s ^MAX .

Fig. 1 shows the structure of an embodiment of a DRX control device at a network side base station (eg, eNB) according to the present invention. As shown in Fig. 1, the DRX control device at the base station includes a service queue module, a DRX flag setting module and a transmitter module.

In order to dynamically and adaptively adjust the discontinuous reception process of the user equipment, a DRX flag setting module is configured in the DRX control device at the base station. When the downlink packet to be sent to the user equipment arrives at the network side, the data packet first enters the service module queue of the DRX control device set in the base station for queuing. After each scheduling period ends, the service queue module reports the number of data packets waiting to be sent in the queue to the DRX flag setting module. The DRX flag setting module first judges whether it is necessary to adjust the discontinuous reception process performed by the user equipment according to the change of the number of data packets waiting to be sent, and if the judgment result is that adjustment is required, then further judges how to adjust the discontinuous reception process performed by the user equipment, and Further setting a DRX flag instructing the user equipment to change the discontinuous reception process according to the judgment result. Finally, the transmitter module downlinks the DRX flag and other control information through related channels.

Fig. 2 shows an embodiment of the present invention in which the DRX flag setting module dynamically adjusts the corresponding user equipment to perform the discontinuous reception process according to the change of the number of data packets waiting to be sent reported by the service queue module.

Assume that at time t, the amount of data in the service queue established by the base station for user equipment k is Q _k (t).

First, it is necessary to determine the current state of user equipment k, including:

Step 200, starting at time t, the DRX flag setting module of the base station judges whether user equipment k is currently executing DRX process-I, and if so, enters step 201, otherwise enters step 210.

In step 210, it is judged whether the user equipment k is currently executing the DRX procedure-II, if so, go to step 211, otherwise go to step 220.

In step 220, it is judged whether user equipment k is currently executing DRX procedure-III, if so, go to step 221, otherwise go to step 230.

When the user equipment k executes the DRX process-1 before time t, the DRX flag setting module adjusts the process of the corresponding user equipment to perform discontinuous reception including:

Steps 201 to 202, judge whether Q _k (t)=0, if Q _k (t)=0, then the base station will send control information and data packets while the receiver of user equipment k is in the deactivation period-I , sending a DRX flag, controlling user equipment k to stop executing DRX process-I and start executing DRX process-II.

Steps 203-204, judging whether $\&ForAll;\mathrm{no}\&Element;[0,N-1],$ n∈Z, Q _k (tn)>Q ^TH , if not, ie $\&Exists;\mathrm{no}\&Element;[0,N-1],$ n∈Z, 0<Q _k (tn)≤Q ^TH , enter step 205; if yes, the number of data packets in the service queue module of user equipment k has been higher than the preset threshold value Q for N consecutive time units ^TH , then the base station will send the DRX flag when the user equipment receiver is in the deactivation period-I, no matter whether to send control information and data packets, and control the user equipment to stop executing the DRX process-I and start executing the DRX process-IV.

Step 205, if $\&Exists;\mathrm{no}\&Element;[0,N-1],$ n∈Z, 0<Q _k (tn)≤Q ^TH , then the base station will not send the DRX flag to the user equipment, and the user equipment will continue to execute the DRX process-I.

When the user equipment k executes the DRX process-II before time t, the DRX flag setting module adjusts the process of the corresponding user equipment to perform discontinuous reception as follows:

Steps 211-212, judge whether Q _k (t)=0 and the deactivation timer-II has not timed out at time t, if so, the base station will not send the DRX flag to the user equipment, and the user equipment continues to execute the DRX process-II; otherwise , go to step 213.

Steps 213-214, judge whether Q _k (t)=0 and the deactivation timer-II ends at time t, if yes, and $\&ForAll;\mathrm{no}\&Element;[0,N-1],$ n∈Z, Q _k (tn)=0, the deactivation timer-II ends at time t, then the base station does not need to send the DRX flag, the user equipment will automatically stop executing the DRX process-II, and start executing the DRX process-III; Otherwise, go to step 215.

Step 215, if Q _k (t)>0 and the deactivation timer-II has not timed out at time t, then the base station will send a DRX flag during the deactivation period-II period of the user equipment receiver, and control the user equipment to stop Execute the DRX process-II, and start to execute the DRX process-I.

When user equipment k executes DRX process-III before time t, the DRX flag setting module adjusts the process of corresponding user equipment to perform discontinuous reception as follows:

Steps 221-222, judge whether Q _k (t)>0, if Q _k (t)>0, then the base station will send a DRX flag to control the user equipment during a monitoring period when the receiver of the user equipment closest to time t enters Stop executing the DRX process-III and start executing the DRX process-I; otherwise, go to step 223 .

Step 223, if Q _k (t)=0, then the base station will not send the DRX flag to the user equipment, and the user equipment continues to perform DRX process-III.

When the user equipment k executes the DRX process-IV before time t, the DRX flag setting module adjusts the process of the corresponding user equipment to perform discontinuous reception as follows:

Steps 231-232, judging whether $\&ForAll;\mathrm{no}\&Element;[0,N-1-t^{\&prime;}],$ n∈Z, Q _k (tn)≥Q ^TH (where t′ represents the moment when the user equipment starts to execute the current DRX process-IV), if so, that is, after the user equipment k starts to execute the current DRX process-IV, its service queue If the number of data packets in the module has been higher than the preset threshold value Q ^TH for N consecutive time units, then the base station will send The DRX flag is used to control the user equipment to start a new DRX procedure-IV; otherwise, go to step 233 .

Steps 233-234, if $\&ForAll;\mathrm{no}\&Element;[0,N-1],$ n∈Z, 0<Q _k (tn)≤Q ^TH , that is, after user terminal k starts to execute the current DRX process-IV, the number of data packets in its service queue module has been lower than the preset threshold for N consecutive time units value Q ^TH , then the base station will send the DRX flag while the user terminal receiver is in the deactivation period-I, while sending the control information and data packets, and control the user equipment to stop executing the DRX process-IV and start executing the DRX process-I ; Otherwise, go to step 235 .

If the above two conditions are not satisfied, that is, when user equipment k is executing the current DRX process-IV, the number of data packets in its service queue module is within N consecutive time units, sometimes lower than the predetermined threshold Q ^TH , sometimes higher than If the threshold value Q ^TH is predetermined, then the base station will not send the DRX flag to the user terminal, and the user terminal continues to execute the current DRX process-IV.

When the DRX flag setting module determines that the discontinuous reception process of the user equipment needs to be adjusted, the DRX flag is set. FIG. 3 shows the format of the Protocol Data Unit (PDU) of Medium Access Control (MAC) defined in the LTE system. The MAC header contains multiple sub-headers. When the LCID field in the sub-header is set to "11110", it means that the MAC control element corresponding to the sub-header is DRX Command. In combination with the LCID field in the sub-header and the MACcontrol element used to carry the DRX Command, the specific method for setting the DRX flag in the present invention is:

When the DRX flag setting module determines that the user equipment needs to stop executing the DRX process-I and start executing the DRX process-II, it sets the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and sets the corresponding MAC control element is set to 0;

When the DRX flag setting module determines that the user equipment needs to stop executing the DRX process-I and start executing the DRX process-IV, set the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and set the corresponding MAC control element is set to 1;

When the DRX flag setting module judges that the user equipment needs to continue to perform the DRX process-I, it does not need to send a MAC PDU or does not need to send a Sub-header whose field LCID is set to "11110" when sending the MAC PDU;

When the DRX flag setting module judges that the user equipment needs to stop executing the DRX process-II and start executing the DRX process-I, it only needs to set the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and there is no need to send Corresponding MACcontrol element;

When the DRX flag setting module judges that the user equipment needs to stop executing the DRX process-III and start executing the DRX process-I, it only needs to set the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and there is no need to send Corresponding MACcontrol element;

When the DRX flag setting module judges that the user equipment needs to stop executing the DRX process-IV and start executing the DRX process-I, the LCID field of one of the Sub-headers in the MAC PDU sent is set to "11110", and the corresponding MAC control element is set to 0;

When the DRX flag setting module judges that the user equipment needs to stop executing the current DRX process-IV and start executing a new DRX process-IV, it sets the LCID field of one of the Sub-headers in the sent MAC PDU to "11110", and sets the corresponding The MAC controlelement is set to 1;

When the DRX flag setting module determines that the user equipment needs to continue to execute the current DRX process-IV, it does not need to send a MAC PDU or does not need to send a Sub-header whose field LCID is set to "11110" when sending a MAC PDU.

Fig. 4 shows an embodiment of the DRX control device at the user equipment side according to the present invention. As shown in FIG. 4 , the DRX control device at the user equipment side includes a receiver module, a control information, data and DRX flag decoding module, and a discontinuous reception control module.

The receiver module in the user equipment receives control information such as scheduling information, data packets and DRX flags from the network side. Then, the receiver module transmits the control information, data packet and DRX flag to the control information, data and DRX flag decoding module. The control information, data and DRX flag decoding module decodes the received control information, data packet and DRX flag, and notifies the DRX flag obtained through decoding to the discontinuous reception control module. The discontinuous reception control module controls the state of the receiver module according to the flag, so as to realize the control function of dynamically and adaptively adjusting the discontinuous reception process.

The user equipment performs different discontinuous reception procedures according to the received DRX flag information from the base station. Fig. 5 shows an embodiment of user equipment executing DRX process-I. The specific process includes:

When the user equipment starts to execute the DRX process-I, it first starts a new deactivation timer-I (step 501), and controls its receiver module to be in the deactivation period-I (step 502).

During deactivation period-I:

Judging whether downlink control information and data information are received (step 503);

If the user equipment receives the control information and the data packet before the end of the current deactivation timer-1 timing, then continue to judge whether to receive the DRX flag information (step 504), if the DRX flag information is not received at the same time, then judge to go Whether the activation timer-1 counts and ends (step 505), if it ends, then returns to step 501, if it does not end, it returns to step 502. This controls its receiver to continue staying in the deactivation period-I.

If the user equipment still does not receive control information and data packets when the current deactivation timer-1 timing ends, then continue to judge whether to receive the indication flag information (step 506), if the DRX flag information is not received simultaneously, then Judging whether the current deactivation timer-1 timing ends (step 507), if so, controls its receiver to enter the dormancy period (step 508); constantly judge whether dormancy ends (509), after the dormancy period ends, return to step 501, control Its receiver re-enters the deactivation period-I.

If the user equipment receives control information and data packets before the end of the current deactivation timer-1 timing, and receives the DRX sign simultaneously, then judge whether the MAC controlelement wherein is "1" (step 510), if so, stop the current The timer-I is deactivated, and the user equipment k starts to execute the DRX procedure-IV (step 511).

If the user equipment does not receive control information and data packets before the end of the current deactivation timer-I, but receives the DRX flag, and the MAC controlelement in it is "1", then stop the current deactivation timer-I, User equipment k starts to execute DRX procedure-IV (step 511).

If the user equipment receives the control information and the data packet before the end of the current deactivation timer-1 timing, and receives the DRX sign simultaneously, but in step 510, it is judged that the indication sign MAC control element is not "1", but " 0", then the current deactivation timer-I is stopped, and the deactivation timer-II is started at the same time, and the user equipment starts to execute the DRX process-II (step 512).

During the execution of the DRX procedure-I by the user equipment, the running time of the deactivation timer-I and the duration of the dormancy period do not change.

Fig. 6 shows an embodiment of user equipment executing DRX process-II. The specific process includes:

When the user equipment starts to execute the DRX process-II, first, start the deactivation timer-II (step 601), and control its receiver to be in the activation period-II (step 602).

During Deactivation Period-II:

Judging whether the DRX flag information is received (step 603), and whether the timing of the deactivation timer-II ends (step 605);

If the DRX flag is received before the deactivation timer-II expires, then upon receiving the DRX flag, the user equipment stops the deactivation timer-II and starts to execute the DRX process-I (step 604).

If the DRX flag is not received when the deactivation timer-II expires, then the user equipment starts to execute the DRX procedure-III after the deactivation timer-II expires (step 606).

During the execution of the DRX procedure-II, the user equipment only starts the deactivation timer-II once.

Fig. 7 shows an embodiment of user equipment executing DRX procedure-III. The specific process includes:

When the user equipment starts to execute the DRX process-III, it first calculates the duration of the next dormancy (step 701), controls its receiver to be in the dormancy period (step 702), determines whether the dormancy period ends (step 703), and ends the dormancy period Afterwards, the user equipment controls its receiver to enter the listening period (step 704).

Among them, in the DRX process-III, the duration of the dormancy period can be adaptively adjusted, and the specific adjustment process is:

When the user equipment controls its receiver to enter the dormancy period for the l (l≥1) time in DRX process III, the duration of the dormancy period is calculated as follows:

${\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; the\; s</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; min</span>}<span\; class="notranslate">\; \{</span>\mathrm{<span\; class="notranslate">\; f</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; the\; s</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 0</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; the\; s</span>}}^{\mathrm{<span\; class="notranslate">\; MAX</span>}}<span\; class="notranslate">\; \}</span>$

More specifically, the form of f(T _s (0)) can be expressed as: f(T _s (0))=2 ^l T _s (0).

During the listening period:

Also judge whether to receive the DRX mark (step 705) that MAC control element is " 1 ";

If the user equipment receives the DRX flag, then after receiving the DRX flag, the user equipment will immediately control its receiver to stop the listening period, and start to execute the DRX process-I (step 706);

If the user equipment does not receive the DRX flag, then it is judged whether the listening period is over (step 707), and after the listening period is over, the user equipment controls its receiver to enter the dormant period. After the dormancy period ends, the user equipment controls its receiver to re-enter the listening period.

When the number of data packets in the service queue established for the user equipment at the network side base station is zero, the base station controls the user equipment to start executing DRX process-III. During this period, by adaptively prolonging the duration of the sleep period in which the receiver is turned off, the user equipment can better save energy in this situation.

Fig. 8 shows an embodiment of user equipment executing DRX procedure-IV. The specific process includes:

When the user equipment starts to execute the DRX process-IV, at first, recalculate the maximum on-time length of the deactivation timer-I (step 801), then start a new deactivation timer-I (step 802), and control its receiving The machine is in deactivation period-1 (step 803).

Wherein, in the DRX process-IV, the maximum turn-on time of the deactivation timer-I can be adaptively adjusted, and the specific adjustment process is:

When the user equipment starts the mth (m≥1) DRX process-IV, assuming that the maximum on-time length of the deactivation timer-I just ended is T _i ^I (m-1)), then the mth DRX process In -IV, the maximum on-time of the deactivation timer-I is calculated as follows:

${\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}^{\mathrm{<span\; class="notranslate">\; I</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; min</span>}<span\; class="notranslate">\; \{</span>\mathrm{<span\; class="notranslate">\; g</span>}<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}^{\mathrm{<span\; class="notranslate">\; I</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 0</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; )</span><span\; class="notranslate">\; ,</span>{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}^{\mathrm{<span\; class="notranslate">\; I</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; MAX</span>}}<span\; class="notranslate">\; \}</span><span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; \&Greater\; Equal;</span>\mathrm{<span\; class="notranslate">\; 1</span>}$

More specifically, the form of g(T _i ^I (0)) can be expressed as $g\left(T_i^I\left(0\right)\right)=(m+1)T_i^i\left(0\right).$

During the deactivation period:

Judging whether downlink control information and data packets are received (step 804);

If control information and data packet are received, then continue to judge whether to receive DRX flag information (step 805), if not receive DRX flag information, further judge whether the timing of deactivation timer-1 finishes (step 806); If user equipment is in Receive control information and data grouping before current deactivation timer-1 timing ends, but do not receive DRX flag information, then return to step 803, if the timing of deactivation timer-1 ends, then return to step 802, stop current Deactivate the timer-I, and open a new deactivation timer-I at the same time, the duration of the new deactivation timer-I is still consistent with the original deactivation timer-I, and control its receiver to continue to stay in the deactivation Period-I.

If the user equipment does not receive the control information and the data packet, it is further judged whether to receive the DRX flag information (step 807); And data grouping, also do not receive DRX flag information, so user equipment controls its receiver to enter dormancy period (step 809); Continue to judge whether dormancy period ends (810), after dormancy period ends, return to step 802, user equipment Control its receiver to re-enter the deactivation period.

If the user equipment receives the control information and the data packet (step 804) before the end of the current deactivation timer-1 timing, and receives the DRX sign (step 805) simultaneously, and it is judged that the MAC control element wherein is not "0" but If it is "1" (step 811), then the current deactivation timer-I is stopped, and the user equipment executes a new DRX procedure-IV (step 812), and returns to step 801.

If the user equipment does not receive control information and data packets (step 804) before the end of the current deactivation timer-1 timing, but receives the DRX sign (step 807), and the MAC control element wherein is "1" (step 807) 811), then stop the current deactivation timer-I, the user equipment executes a new DRX procedure-IV (step 812), and returns to step 801.

If user equipment receives control information and data grouping (step 804) before current deactivation timer-1 timing ends, receives DRX sign (step 805) simultaneously, and MAC control element wherein is " 0 " (step 811 ), then the current deactivation timer-I is stopped, and the user equipment executes the DRX procedure-I (step 813).

Through the solution of the present invention, when the number of data packets in the service queue established for the user equipment at the network side base station is higher than the preset threshold value Q ^TH for N consecutive time units, the base station controls the user equipment to start executing the DRX process-IV . After starting to execute a new DRX process-IV each time, the user equipment extends the maximum running time of the deactivation timer-I adaptively, thereby prolonging the duration of the deactivation period-I in which the receiver is in the on state , enabling the user equipment to have a higher data transmission rate in this case.

Compared with the discontinuous reception mechanism of the current 802.16e, GSM, UMTS and LTE systems, it can be seen that the present invention dynamically adjusts the DRX of the user equipment by considering the number of data packets in the service queue established by the network side for the user equipment. The discontinuous reception process enables the user equipment to adaptively obtain a good performance compromise between energy saving performance and data transmission rate performance.

The specific embodiments described above are only specific embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present invention shall include Within the protection scope of the present invention.

Claims (26)

1. A method for dynamically controlling discontinuous reception of a user equipment, comprising:

step 1: when the user equipment initially establishes connection, the network side informs the user equipment of an initial value of a parameter used in the process of executing discontinuous reception through a downlink signaling;

step 2: during the service connection period of the user equipment, after each scheduling time is finished, the network side dynamically determines how to adjust the discontinuous receiving process of the user equipment according to the discontinuous receiving process established for the user equipment at the previous time and the number of data packets waiting to be sent in a service queue established for the user equipment;

and step 3: the network side sets a DRX mark for indicating the user equipment to change the discontinuous reception process according to the result of adjusting the discontinuous reception process of the user equipment determined in the step 2, and sends the set DRX mark to the user equipment when the receiver of the user equipment is in an on state; and

and 4, step 4: and the user equipment executes a corresponding discontinuous reception process according to the received DRX mark and adaptively adjusts parameters in the discontinuous reception process.

2. The method of claim 1, wherein setting a deactivation timer-I and a deactivation timer-II controls the scheduling time;

the discontinuous reception process performed by the user equipment includes: DRX procedure-I, DRX procedure-II, DRX procedure-III, and DRX procedure-IV;

when DRX (discontinuous reception) -I is carried out, the user equipment controls a receiver of the user equipment to be alternately in a deactivation period-I and a dormant period;

when DRX is carried out in process-II, the user equipment controls a receiver to be in a deactivation period-II;

in DRX process-III, the user equipment controls a receiver thereof to be in a monitoring period and a dormant period alternately;

during DRX process-IV, the user equipment is alternately in a deactivation period-I and a dormancy period;

wherein,

the deactivation period-I is the duration length of the user equipment receiver in an on state in the preset deactivation timer-I running time;

the deactivation period-II is the duration of the user equipment receiver in an on state within the preset deactivation timer-II running time;

the monitoring period is that the user equipment receiver is in an open state and is used for receiving the DRX mark, and the longest duration time of the receiver is notified by a network side through downlink signaling when the user equipment initially establishes connection;

the sleep period is that the user equipment receiver is in a closed state, and the initial value of the duration and the maximum value of the duration are notified by a network side through downlink signaling when the user equipment initially establishes connection.

3. The method of claim 2,

in DRX process-I, the maximum operation time of the deactivation timer-I is the initial value, and the duration time of the sleep period is the initial value;

during DRX process-III, the duration of the dormant period is self-adaptive adjustment;

in DRX process-IV, the maximum running time of the deactivation timer-I is self-adaptive adjustment, and the duration of the sleep period is the initial value.

4. The method of claim 2, wherein the parameters in step 1 comprise: deactivating the longest running time initial value of the timer-I; deactivating the longest run time maximum for timer-I; deactivate the longest run time maximum for timer-II; a duration of a listening period; the initial value of the duration time of the sleep period; maximum sleep period duration.

5. The method of claim 2, wherein the ue performs DRX procedure-I at a previous time, and the step 2 of determining how to dynamically adjust the DRX procedure of the ue comprises:

if the number of data packets waiting to be sent in a service queue established by the network side for the user equipment after the current scheduling time is over is 0, the determined adjustment result is as follows: controlling the user equipment to stop executing a DRX process-I and start executing a DRX process-II;

if the number of data packets waiting to be sent in a service queue established by the network side for the user equipment after the current scheduling time is over and the number of consecutive N time units is greater than the threshold value set by the network side since the user equipment starts to execute the DRX process-I again, then the determined adjustment result is: controlling the user equipment to stop executing a DRX process-I and start executing a DRX process-IV;

if the number of data packets waiting to be sent in the service queue established by the network side for the user equipment does not satisfy the above two conditions after the current scheduling time is over, the determined adjustment result is: the discontinuous reception process of the user equipment remains unchanged.

6. The method of claim 2, wherein the ue performs DRX procedure-II at a previous time, and the step 2 of determining how to dynamically adjust the DRX procedure of the ue comprises:

if the number of data packets waiting to be sent in a service queue established by the network side for the user equipment is not zero after the current scheduling moment is ended, the determined adjustment result is as follows: controlling the user equipment to stop executing a DRX process-II and start executing the DRX process-I;

if the number of data packets waiting to be sent in a service queue established by the network side for the user equipment is zero after the current scheduling moment is finished, and the DRX process-II is automatically finished, the determined adjustment result is as follows: controlling the user equipment to perform DRX process-III;

if the number of data packets waiting to be sent in a service queue established by the network side for the user equipment is zero after the current scheduling moment is finished, and the DRX process-II is not automatically finished, the determined adjustment result is: and controlling the user equipment to continuously execute DRX process-II.

7. The method according to claim 2, wherein the ue performs DRX procedure-III at the previous time, and the step 2 of determining how to dynamically adjust the DRX procedure of the ue comprises:

if the number of data packets waiting to be sent in a service queue established by the network side for the user equipment is not zero after the current scheduling moment is ended, the determined adjustment result is as follows: controlling the user equipment to stop executing a DRX process-III and start executing a DRX process-I;

if the number of data packets waiting to be sent in a service queue established by the network side for the user equipment is zero after the current scheduling moment is finished, the determined adjustment result is as follows: and controlling the user equipment to continuously execute DRX process-III.

8. The method of claim 2, wherein the ue performs DRX procedure-IV at a previous time, and the step 2 of determining how to dynamically adjust the DRX procedure of the ue comprises:

if the number of data packets waiting to be sent in a service queue established by the network side for the user equipment after the current scheduling time is over is less than the threshold value set by the network side for N consecutive time units since the user equipment starts or starts to execute the DRX process-IV again, then the determined adjustment result is: controlling the user equipment to stop executing a DRX process-IV and start executing a DRX process-I;

if the number of data packets waiting to be sent in a service queue established by the network side for the user equipment after the current scheduling time is over is greater than the threshold value set by the network side for N consecutive time units since the user equipment starts or starts to execute the DRX process-IV again, the determined adjustment result is: controlling the user equipment to stop executing the current DRX process-IV and start executing a new DRX process-IV;

if the number of data packets waiting to be sent in the service queue established by the network side for the user equipment does not satisfy the above two conditions after the current scheduling time is over, the determined adjustment result is: the discontinuous reception process of the user equipment remains unchanged.

9. The method of claim 2, wherein the step of the user equipment performing DRX procedure-I in the previous moment, and the step of setting the DRX flag indicating to the user equipment to change the discontinuous reception procedure according to the adjustment result determined in the step 2 in the step 3 comprises:

if the DRX process-II is determined to be started, setting LCID field of one Sub-header in the transmitted MAC PDU to be '11110' and setting the corresponding MAC control element to be 0;

if the DRX process-IV is determined to be started, setting LCID field of one Sub-header in the transmitted MAC PDU to be '11110' and setting corresponding MAC control element to be 1;

if it is determined that the DRX process-I is continuously performed, there is no need to transmit the MAC PDU or to transmit a Sub-header having a field LCID set to '11110' when the MAC PDU is transmitted.

10. The method of claim 2, wherein the step of the user equipment performing DRX procedure-II in the previous moment, and the step of setting the DRX flag indicating to the user equipment to change the discontinuous reception procedure according to the adjustment result determined in the step 2 in the step 3 comprises:

if the DRX process-I is determined to be started, only the LCID field of one Sub-header in the transmitted MAC PDU is set to '11110', and the corresponding MAC control element does not need to be transmitted;

if it is determined to start performing the DRX process-III, there is no need to transmit the MAC PDU or to transmit a Sub-header having a field LCID set to '11110' when transmitting the MAC PDU.

11. The method according to claim 2, wherein the step of the user equipment performing DRX procedure-III in the previous moment, and the step of setting the DRX flag indicating to the user equipment to change the discontinuous reception procedure according to the adjustment result determined in the step 2 in the step 3 comprises:

if the DRX process-I is determined to be started, only the LCID field of one Sub-header in the transmitted MAC PDU is set to '11110', and the corresponding MAC control element does not need to be transmitted;

if it is determined that the DRX process-III is continuously performed, there is no need to transmit the MAC PDU or to transmit a Sub-header having a field LCID set to '11110' when the MAC PDU is transmitted.

12. The method of claim 2, wherein the step of the user equipment performing the DRX procedure-IV at the previous moment, and the step of setting the DRX flag indicating to the user equipment to change the DRX procedure according to the adjustment result determined in the step 2 in the step 3 comprises:

if the DRX process-I is determined to be started, setting LCID field of one Sub-header in the transmitted MAC PDU to be '11110' and setting corresponding MAC control element to be 0;

if the new DRX process-IV is determined to be started, setting LCID field of one Sub-header in the transmitted MAC PDU to be '11110' and setting corresponding MAC control element to be 1;

if it is determined that the current DRX process-IV is continuously performed, there is no need to transmit the MAC PDU or to transmit a Sub-header having a field LCID set to '11110' when the MAC PDU is transmitted.

13. The method of claim 2, wherein the step 4 of the UE performing DRX process-I comprises: when the user equipment starts to perform the DRX procedure-I, its receiver is first controlled to be in a deactivation period-I.

14. The method of claim 13, wherein when the UE controls its receiver to be in a deactivation period-I, further comprising:

if the user equipment receives the control information and the data packet before the end of the timing of the current deactivation timer-I but does not receive the DRX mark information, stopping the current deactivation timer-I, simultaneously starting a new deactivation timer-I, and controlling the receiver to stay in the activation period-I;

if the user equipment still does not receive the control information and the data packet when the current deactivation timer-I finishes timing and does not receive DRX mark information at the same time, controlling a receiver of the user equipment to enter a sleep period after the current deactivation timer-I finishes timing; after the dormancy period is finished, controlling the receiver to enter a deactivation period I again;

if the user equipment receives the control information and the data packet before the end of the timing of the current deactivation timer-I and simultaneously receives the DRX mark, and the MAC control element in the DRX mark is 1, stopping the current deactivation timer-I, and starting the user equipment k to execute a DRX process-IV;

if the user equipment does not receive the control information and the data packet before the end of the timing of the current deactivation timer-I but receives the DRX mark and the MAC control element in the DRX mark is 1, stopping the current deactivation timer-I and starting the user equipment to execute a DRX process-IV;

if the user equipment receives the control information and the data packet before the end of the timing of the current deactivation timer-I and simultaneously receives the DRX mark, and the MAC control element in the DRX mark is 0, stopping the current deactivation timer-I, simultaneously starting the deactivation timer-II, and starting the user equipment to execute a DRX process-II.

15. The method of claim 2, wherein the step 4 of the UE performing DRX process-II comprises: when the user terminal starts to perform DRX procedure-II, its receiver is first controlled to be in active period-II.

16. The method of claim 15, wherein when the ue controls its receiver to be in a deactivation period-II, further comprising:

if the DRX mark is received before the timing of the deactivation timer-II is finished, the user equipment stops deactivating the timer-II and starts to execute a DRX process-I when the DRX mark is received;

if the DRX mark is not received when the time of the deactivation timer-II is over, the user equipment starts to execute a DRX process-III after the time of the deactivation timer-II is over.

17. The method according to claim 2, wherein the step 4 of the ue performing DRX procedure-III specifically comprises: when the user terminal starts to execute the DRX process-III, firstly, the receiver of the user terminal is controlled to be in a dormant period, and after the dormant period is ended, the user equipment controls the receiver of the user terminal to enter a monitoring period.

18. The method of claim 17, wherein when the ue controls its receiver to be in the listening period, further comprising:

if the user equipment receives the DRX mark, the user equipment immediately controls a receiver of the user equipment to stop the monitoring period after receiving the DRX mark, and starts to execute a DRX process-I;

if the user equipment does not receive the indication mark, the user equipment controls the receiver of the user equipment to enter a sleep period after the listening period is ended. After the sleep period is finished, the user equipment controls the receiver to re-enter the listening-off period.

19. The method according to claim 2, wherein the step 4 of the ue performing the DRX procedure-IV specifically comprises: when the user equipment starts to perform the DRX procedure-IV, its receiver is first controlled to be in a deactivation period-I.

20. The method of claim 19, wherein when the ue controls its receiver to be in a deactivation period-I, further comprising:

if the user equipment receives the control information and the data packet before the end of the timing of the current deactivation timer-I but does not receive the DRX mark information, stopping the current deactivation timer-I, simultaneously starting a new deactivation timer-I, and controlling the receiver to stay in the active period;

if the user equipment still does not receive the control information and the data packet when the current deactivation timer-I timing is ended, and does not receive the DRX mark information, the user equipment controls a receiver of the user equipment to enter a sleep period after the current deactivation timer-I timing is ended. After the dormancy period is finished, the user equipment controls the receiver to enter the deactivation period again;

if the user equipment receives the control information and the data packet before the end of the timing of the current deactivation timer-I and simultaneously receives the DRX mark, and the MAC control element in the DRX mark is 1, stopping the current deactivation timer-I, and starting the user equipment k to execute a new DRX process-IV;

if the user equipment does not receive the control information and the data packet before the end of the timing of the current deactivation timer-I but receives the DRX mark and the MAC control element in the DRX mark is 1, stopping the current deactivation timer-I and executing a new DRX process-IV by the user equipment;

if the user equipment receives the control information and the data packet before the end of the timing of the current deactivation timer-I and simultaneously receives the DRX mark, and the MAC control element in the DRX mark is 0, stopping the current deactivation timer-I, and executing the DRX process-I by the user equipment.

21. The method of claim 2, wherein the duration of the sleep period is adaptively adjusted when the user equipment performs DRX process-III in step 4.

22. The method of claim 21, wherein the adjusting of the length of the duration of the sleep period comprises: when the UE controls its receiver to enter the sleep period the l (l ≧ 1) th time in DRX process-III, the duration length of the sleep period is calculated as follows:

$T_s\left(l\right)=\min \{f\left(T_s\left(0\right)\right),T_s^{\mathrm{MAX}}\}$

wherein T is_s(0) Representing an initial value of the duration of the sleep period; t is_s ^MAXA maximum value representing the duration of the sleep period; f (T)_s(0) Is T)_s(0) Any form of function of.

23. The method according to claim 2, wherein the maximum on-time of the deactivation timer-I is adaptively adjusted when the user equipment performs DRX procedure-IV in step 4.

24. The method of claim 23, wherein the maximum on-time of the deactivation timer-I is adjusted by: when the UE starts the m (m ≧ 1) th DRX process-IV, assume that the maximum duration length of the just-ended deactivation timer-I is T_i ^I(m-1), then the longest run time of the deactivation timer-I in the mth DRX procedure-IV is calculated as follows:

<math> <mrow> <msubsup> <mi>T</mi> <mi>i</mi> <mi>I</mi> </msubsup> <mrow> <mo>(</mo> <mi>m</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mo>{</mo> <mi>g</mi> <mrow> <mo>(</mo> <msubsup> <mi>T</mi> <mi>i</mi> <mi>I</mi> </msubsup> <mrow> <mo>(</mo> <mn>0</mn> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>,</mo> <msubsup> <mi>T</mi> <mi>i</mi> <mrow> <mi>I</mi> <mo>-</mo> <mi>MAX</mi> </mrow> </msubsup> <mo>}</mo> <mo>,</mo> <mi>m</mi> <mo>&GreaterEqual;</mo> <mn>1</mn> </mrow> </math>

wherein T is_i ^I(0) An initial value representing the longest run time of the deactivation timer-I; t is_i ^I-MAXTo expressActivating the maximum value of the longest running time of the timer-I; g (T)_i ^I(0) Is T)_i ^I(0) Any form of function of.

25. An apparatus for dynamically adaptively controlling discontinuous reception of a user equipment according to the method of claims 1 to 24, wherein the apparatus is disposed in a base station and comprises:

a service queue module for buffering data packets sent to the user equipment;

DRX flag setting module: the DRX mark is used for dynamically adjusting the user equipment to execute the discontinuous receiving process according to the number of the data packets in the service queue of the user equipment and further setting the DRX mark for indicating the user equipment to change the discontinuous receiving process;

a transmitter module for transmitting the generated control information, data packet and DRX flag.

26. An apparatus for dynamically adaptively controlling discontinuous reception of a ue according to the method of claims 1-24, wherein the apparatus is configured in the ue and comprises:

a receiver module for receiving control information, data packets and the DRX flag from a base station side;

a control information, data grouping and DRX mark decoding module for decoding the received control information, service data and DRX mark; and

and the discontinuous reception control module is used for determining a discontinuous reception process executed by the user equipment according to the DRX mark and further controlling the receiver to enter different active states according to the executed discontinuous reception process.

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