CN102123518B - Method and system for storing special identification of terminal - Google Patents
Method and system for storing special identification of terminal Download PDFInfo
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- CN102123518B CN102123518B CN 201010034002 CN201010034002A CN102123518B CN 102123518 B CN102123518 B CN 102123518B CN 201010034002 CN201010034002 CN 201010034002 CN 201010034002 A CN201010034002 A CN 201010034002A CN 102123518 B CN102123518 B CN 102123518B
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Abstract
The invention discloses a method and system for storing a special identification of a terminal. The method comprises the following steps: step S102, a network sends a special control signaling to the terminal and notifies the terminal of entering a cell paging channel state; and step S104, when a preset condition is met, the terminal stores the special identification of the terminal under the original state. In the technical scheme disclosed by the invention, the time delay of state transferring can be reduced, the signaling overhead is saved and the method is simple and feasible.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method and system of preserving the terminal-specific sign.
Background technology
In agreement, stipulate at present, there are altogether four kinds of states under the terminal connection mode: cell private channel (CELL Dedicated Channel, referred to as CELL_DCH) state, cell forward access channel (CELL Forward Access Channel, referred to as CELL_FACH) state, cell paging channel (CELL Paging Channel, referred to as CELL_PCH) state and UTRAN Acceditation Area paging channel (UTRAN-Registration-Area Paging Channel, referred to as URA_PCH) state.
Under the CELL_DCH state, for terminal distribution dedicated channel or use high-speed downlink packet access (HSDPA) and the correlated channels of High Speed Uplink Packet access (HSUPA) and transmission mechanism transmit data, transferring large number of data rapidly under this state.
When the terminal transmission data volume in the CELL_DCH state reduces, radio network controller (Radio Access Controller, referred to as RNC) can be by terminal configuration to the CELL_FACH state.Under the CELL_FACH state, do not give the terminal distribution dedicated channel, descending monitoring FACH channel receives low volume data, up use RACH (request access channel) transmission low volume data.Under the CELL_FACH state, if terminal does not all have transfer of data within a period of time, enter the CELL_PCH state.
Under the CELL_PCH state, can not send data, only can respond paging, under this state, network is known the residing community of terminal.In addition, under the URA_PCH state, can not send data, only can respond paging, under this state, network is known the residing URA of terminal.
Traditionally, under the CELL_PCH state, when terminal is received beep-page message or had transmitting uplink data, will transit under the CELL_FACH state, initiate cell updating course.
Strengthening high-speed packet access (High Speed Packet Access, referred to as HSPA) system strengthens CELL_FACH state and CELL_PCH, URA_PCH state.Strengthening CELL_FACH state and CELL_PCH, URA_PCH state transfer channel-changing is HS-DSCH (high-speed downlink shared channel) and E-DCH (enhancing dedicated channel) channel.Strengthening under CELL_FACH state and CELL_PCH state, network, by control channel HS-SCCH (High-Speed Shared Control Channel) and E-AGCH (E-DCH absolute grant channel) dispatch terminal, wherein carries terminal iidentification H-RNTI and E-RNTI.Terminal is monitored above-mentioned control channel according to the H-RNTI or the E-RNTI that preserve, and the sign that the sign on control channel stored with terminal if listen to is identical, in the physical channel of control channel appointment, receives data.
RNC can use RRC control signal (for example radio bearer is reshuffled, transmission channel is reshuffled, physical channel reshuffle) by terminal from the CELL_FACH state configuration to the CELL_PCH state, do not carry sign H-RNTI and E-RNTI in the RRC control signal, terminal will be preserved above-mentioned sign after entering the CELL_PCH state, otherwise terminal will be deleted H-RNTI or the E-RNTI preserved under previous status.According to whether carrying the signs such as sign H-RNTI and E-RNTI in the RRC control signal, CELL_PCH state terminal can being divided into preserve and do not preserve dedicated H-RNTI and E-RNTI identifies two classes.
The CELL_PCH terminal of in agreement, preserving at present dedicated H-RNTI and E-RNTI sign receives the data that network sends, when entering the CELL_FACH state without sending cell update message (CELL UPDATE).For FDD, terminal will send measurement report message by the E-DCH channel, and RNC is updated to the CELL_FACH state by the state of terminal by CELL_PCH after receiving this message.For TDD, terminal will send and strengthen random ascending control channel (Enhanced Random Uplink Control Channel under the CELL_FACH state, referred to as E-RUCCH), the E-RNTI of carried terminal storage, base station sends FP frame notice RNC terminal and transfers to the CELL_FACH state after receiving the E-RUCCH of terminal.Then, RNC is CELL_FACH according to the FP frame of receiving by the state information updating of terminal.Above-mentioned state transitions process, owing to not needing to send cell updating course, therefore is called the fast state transfer of CELL_PCH to CELL_FACH.
If terminal is not preserved dedicated H-RNTI and E-RNTI sign, terminal will receive the beep-page message that network sends on the code channel of appointment, and transfer under the CELL_FACH state and select a public E-RNTI to send cell update message.Then, RNC receives the cell update message of network, by the state information updating of terminal, be CELL_FACH, and again for terminal distribution strengthens the dedicated H-RNTI used under the CELL_FACH state, and the dedicated H-RNTI and the E-RNTI that redistribute are passed through to cell update acknowledge message (CELL UPDATE CONFIRM) notification terminal.
With the preservation dedicated H-RNTI, with the terminal of E-RNTI sign, compare, do not preserve the terminal CELL_PCH of dedicated H-RNTI and E-RNTI sign after the CELL_FACH state transitions, need to use the flow process of above-mentioned cell update, thereby cause time delay longer, and the transmission of above-mentioned message takies Radio Resource, wasted more Radio Resource.
Standard code at present, if do not comprise H-RNTI and the E-RNTI of specific identity in the signaling of notification terminal state transitions, terminal will be deleted the sign of the special use of CELL_FACH under previous status, and reentering to strengthen under the CELL_FACH state needs again to initiate cell updating course.This process time delay is longer, and cell update and cell update acknowledge message send and take Radio Resource.
Therefore, need a kind of store method of terminal-specific sign, can carry out the fast state transfer by accessory terminal, and terminal and network all support to strengthen CELL_FACH and CELL_PCH characteristic.
Summary of the invention
Consider the problems referred to above and make the present invention.
According to an aspect of the present invention, provide a kind of method of preserving the terminal-specific sign, comprised the following steps: step S102, network sends dedicated control signaling to terminal, and notification terminal enters the cell paging channel status; And step S104, when meeting predetermined condition, terminal is preserved the terminal-specific sign under previous status.
On the one hand, predetermined condition is that terminal goes out to need to preserve the terminal-specific sign under previous status according to the preset judgment condition judgment.
Wherein, the preset judgment condition is for meet the following conditions simultaneously: terminal and network are all supported to strengthen cell forward access channel and are strengthened the cell paging signal; State in dedicated control signaling is designated as the cell paging channel status; Do not carry the terminal-specific sign under the cell paging channel status in dedicated control signaling; And the multiplexing type selecting of the radio bearer of terminal comprises high-speed downlink shared channel and strengthens dedicated channel.
On the other hand, predetermined condition is: network is preserved indication by specific identity and is come notification terminal to preserve the terminal-specific sign.
Preferably, carry specific identity in dedicated control signaling and preserve indication.
Wherein, dedicated control signaling comprises that radio bearer is reshuffled, transmission channel is reshuffled or physical channel is reshuffled.
Preferably, carry specific identity in system broadcasts and preserve indication.
Wherein, system broadcasts is system broadcasts piece 3 or system broadcasts piece 5.
In addition, the method also comprises: terminal, after the specific identity that receives automatic network is preserved indication, judges whether to preserve the terminal-specific sign under previous status according to the preset judgment condition.
Wherein, the preset judgment condition is for meet the following conditions simultaneously: terminal and network are all supported to strengthen cell forward access channel and are strengthened the cell paging signal; State in dedicated control signaling is designated as the cell paging channel status; Do not carry the terminal-specific sign under the cell paging channel status in dedicated control signaling; The multiplexing type selecting of the radio bearer of terminal comprises high-speed downlink shared channel and strengthens dedicated channel; And comprise terminal-specific sign in system broadcasts or dedicated control signaling and preserve indication.
According to a further aspect in the invention, provide a kind of system of preserving the terminal-specific sign, having comprised: the dedicated control signaling dispensing device, be arranged in network, enter the cell paging channel status for carry out notification terminal by dedicated control signaling; And terminal-specific sign save set, be arranged in terminal, for when meeting predetermined condition, preserve the terminal-specific sign under previous status.
On the one hand, predetermined condition is that terminal goes out to need to preserve the terminal-specific sign under previous status according to the preset judgment condition judgment.
Wherein, the preset judgment condition is for meet the following conditions simultaneously: terminal and network are all supported to strengthen cell forward access channel and are strengthened the cell paging signal; State in dedicated control signaling is designated as the cell paging channel status; Do not carry the terminal-specific sign under the cell paging channel status in dedicated control signaling; And the multiplexing type selecting of the radio bearer of terminal comprises high-speed downlink shared channel and strengthens dedicated channel.
On the other hand, predetermined condition is: network is preserved indication by specific identity and is come notification terminal to preserve described terminal-specific sign.
Preferably, carry specific identity in dedicated control signaling and preserve indication.
Wherein, dedicated control signaling comprises that radio bearer is reshuffled, transmission channel is reshuffled or physical channel is reshuffled.
Preferably, carry specific identity in system broadcasts and preserve indication.
Wherein, system broadcasts is system broadcasts piece 3 or system broadcasts piece 5.
In addition, this system also comprises judgment means: for receiving the specific identity preservation indication that carrys out automatic network in terminal after, according to the preset judgment condition, judge whether to preserve the terminal-specific sign under previous status.
Wherein, the preset judgment condition is for meet the following conditions simultaneously: terminal and network are all supported to strengthen cell forward access channel and are strengthened the cell paging signal; State in dedicated control signaling is designated as the cell paging channel status; Do not carry the terminal-specific sign under the cell paging channel status in dedicated control signaling; The multiplexing type selecting of the radio bearer of terminal comprises high-speed downlink shared channel and strengthens dedicated channel; And comprise terminal-specific sign in system broadcasts or dedicated control signaling and preserve indication.
By technical scheme of the present invention, can reduce the time delay of state transitions, save signaling consumption and simple.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification write, claims and accompanying drawing.
The accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
Fig. 1 is the flow chart illustrated according to the method for preservation terminal-specific sign of the present invention; And
Fig. 2 is the block diagram illustrated according to the system of preservation terminal-specific sign of the present invention.
Embodiment
Describe embodiments of the invention in detail below in conjunction with accompanying drawing.
The problem that method and system of the present invention mainly solves is: after strengthening HSPA system CELL_FACH enhancing characteristic, how the terminal that strengthens the CELL_PCH state preserves CELL_FACH specific identity under previous status, thereby carries out the fast state branch problem.
Core concept of the present invention is that the network indicating terminal carries out the preservation of specific identity or meet the specified conditions terminal specific identity is preserved.
Fig. 1 is the flow chart illustrated according to the method for preservation terminal-specific sign of the present invention.
With reference to Fig. 1, the method for preserving the terminal-specific sign comprises the following steps: step S102, and network sends dedicated control signaling to terminal, and notification terminal enters the cell paging channel status; And step S104, when meeting predetermined condition, terminal is preserved the terminal-specific sign under previous status.
Fig. 2 is the block diagram illustrated according to the system of preservation terminal-specific sign of the present invention.
With reference to Fig. 2, the system of preserving the terminal-specific sign comprises: dedicated control signaling dispensing device 202, be arranged in network 20, and enter the cell paging channel status for carry out notification terminal 22 by dedicated control signaling; And terminal-specific sign save set 204, be arranged in terminal 22, for when meeting predetermined condition, preserve the terminal-specific sign under previous status.
In the prior art, if the RRC control signal does not carry the signs such as H-RNTI and E-RNTI, terminal just must be initiated renewal process when entering the CELL_FACH state, on the other hand, in technical scheme of the present invention, if the RRC control signal does not carry the signs such as H-RNTI and E-RNTI, terminal is preserved the specific identity of previous status when entering CELL_PCH with regard to carrying out certain processing, thus when entering the CELL_FACH state without carrying out renewal process.Below will be described in detail.
In the present invention, can adopt and determine whether in two ways to preserve the terminal-specific sign.
The first embodiment
First kind of way is the preservation that the network indicating terminal carries out specific identity.
Particularly, this process comprises: RNC is used the dedicated signaling notification terminal to enter the CELL_PCH state, does not carry the terminal-specific sign under the CELL_PCH state in above-mentioned signaling; Then, terminal receives control signal, and preserves indication according to the specific identity in system broadcasts or dedicated signaling and carry out the terminal iidentification preservation.After this, if terminal receive the network downlink data or there is transmitting uplink data, transfer to the CELL_FACH state, the specific identity of use preserving sends E-RUCCH etc. (this processing is identical with the flow process of prior art, is no longer repeated).
Note, above-mentioned control signal is RRC (Radio Resource Control) signaling, comprises system broadcast message or dedicated signaling.That is to say, carry out carried terminal sign in the dedicated control signaling of state transitions at system broadcasts or command terminal and preserve indication.
Wherein, the RRC signaling comprises that radio bearer reshuffles that (Radio Bearer Reconfiguration), transmission channel are reshuffled (Transport Channel Reconfiguration), physical channel is reshuffled (Physical Channel Reconfiguration) etc.
In addition, preferably, system broadcasts can be system broadcasts piece 3 or system broadcasts piece 5.
When occurring that terminal iidentification is preserved indication, terminal is preserved the specific identity of previous status, uses when coming back to previous status.
In addition, terminal can also judge whether to carry out by Boolean variable is set the preservation of specific identity, and the Rule of judgment of variable need to meet following described condition:
1) terminal and network are all supported to strengthen CELL_FACH, are strengthened CELL_PCH.Its detailed process is: terminal strengthens CELL_FACH, strengthens the indication of CELL_PCH ability, notice RNC by RRC signaling (RRC connects the request of foundation or the RRC connection has been set up or cell update) carried terminal; Network carries by system broadcast message piece 5 notification terminals such as strengthening CELL_FACH, enhancing CELL_PCH configuration parameter (such as " HS-DSCH common system information ", " Common E-DCHsystem info ", " HS-DSCH paging system information ");
2) state that terminal receives in dedicated signaling is designated as the CELL_PCH state, and this state indication is the information word " RRC State Indicator " comprised in dedicated signaling;
3) carried terminal specific identity (H-RNTI or E-RNTI) not in the dedicated signaling that terminal receives;
4) the multiplexing type selecting of terminal radio bearer comprises transmission channel HS-DSCH and E-DCH; And
5) comprise specific identity in the dedicated signaling that terminal receives or system broadcasts and preserve indication.
Between above-mentioned five conditions, be " with " relation, if this Boolean variable is true, terminal is preserved the terminal-specific sign under previous status.
Following table is the example that dedicated signaling above-mentioned is shown, from table, the content of last column can be found out, if there be " RNTI Store Indicator ", when terminal enters CELL_PCH and New H-RNTI, New Primary E-RNTI and do not occur, just mean that terminal need to preserve the dedicated H-RNTI of previous status and E-RNTI etc.
| Information Element/Group name (information element) | Need (attribute) | Multi | Type and reference (type and index) | Semantics description (semantic description) | Version (version) |
| Part is omitted ... | |||||
| UE Information Elements | |||||
| New U-RNTI | OP (optional appearance) | U-RNTI 10.3.3.47 | |||
| New C-RNTI | OP (optional appearance) | C-RNTI 10.3.3.8 |
| information Element/Group name (information element) | need (attribute) | multi | type and reference (type and index) | semantics description (semantic description) | version (version) |
| new DSCH-RNTI | oP (optional appearance) | dSCH-RNTI 10.3.3.9a | should not be set in FDD.If received the UE should ignore it | ||
| new H-RNTI | oP (optional appearance) | h-RNTI 10.3.3.14a | rEL-5 | ||
| new Primary E-RNTI | oP (optional appearance) | e-RNTI 10.3.3.10a | rEL-6 | ||
| new Secondary E-RNTI | oP (optional appearance) | e-RNTI 10.3.3.10a | fDD only | rEL-6 | |
| part is omitted ... | |||||
| rNTI Store Indicator | cV-RNTI (appearance of having ready conditions) | enumerate (Ture) | when terminal enters CELL_PCH and New H-RNTI, New Primary E-RNTI and do not occur, this information word may occur.When this information word occurs, mean that terminal need to preserve the dedicated H-RNTI of previous status and E-RNTI etc. | rEL-8 |
The second embodiment
The second way is that terminal is preserved specific identity when meeting specified conditions.
Particularly, different from first kind of way, terminal is without the indication of waiting for network, but oneself judges whether preserve the terminal-specific sign according to specified conditions.
Wherein, specified conditions comprise:
1) terminal and network are all supported to strengthen CELL_FACH, are strengthened CELL_PCH.Its detailed process is: terminal strengthens CELL_FACH, strengthens the indication of CELL_PCH ability, notice RNC by RRC signaling (RRC connects the request of foundation or the RRC connection has been set up or cell update) carried terminal; Network carries by system broadcast message piece 5 notification terminals such as strengthening CELL_FACH, enhancing CELL_PCH configuration parameter (such as " HS-DSCH common system information ", " Common E-DCHsystem info ", " HS-DSCH paging system information ");
2) state in the dedicated signaling that terminal receives is designated as the CELL_PCH state, and this state indication is the information word " RRC State Indicator " comprised in dedicated signaling;
3) carried terminal specific identity (H-RNTI or E-RNTI) not in the dedicated signaling that terminal receives; And
4) the multiplexing type selecting of terminal radio bearer comprises transmission channel HS-DSCH and E-DCH.
Between above-mentioned four conditions, be " with " relation, the terminal that meets above-mentioned condition will be judged above-mentioned condition when state is changed, if meet above-mentioned condition, preserve specific identity under previous status, for using when returning previous status.
As mentioned above, in an embodiment of the present invention, when the network indicating terminal carries out the preservation of specific identity or meets specified conditions, terminal is preserved specific identity.By this technical scheme, can reduce the time delay of state transitions, save signaling consumption and simple.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a method of preserving the terminal-specific sign, is characterized in that, said method comprising the steps of:
Network sends dedicated control signaling to terminal, notifies described terminal to enter the cell paging channel status; And
When meeting predetermined condition, described terminal is preserved the terminal-specific sign under previous status,
Wherein, described predetermined condition is: described terminal goes out to need to preserve the terminal-specific sign under described previous status according to the preset judgment condition judgment,
Wherein, described preset judgment condition is for meet the following conditions simultaneously:
Described terminal and described network are all supported to strengthen cell forward access channel and are strengthened the cell paging signal;
State in described dedicated control signaling is designated as the cell paging channel status;
Do not carry the terminal-specific sign under described cell paging channel status in described dedicated control signaling: and
The multiplexing type selecting of the radio bearer of described terminal comprises high-speed downlink shared channel and strengthens dedicated channel.
2. a method of preserving the terminal-specific sign, is characterized in that, said method comprising the steps of:
Network sends dedicated control signaling to terminal, notifies described terminal to enter the cell paging channel status; And
When meeting predetermined condition, described terminal is preserved the terminal-specific sign under previous status,
Wherein, described predetermined condition is: described network is preserved indication by specific identity and is notified described terminal to preserve described terminal-specific sign,
Wherein, also comprise: described terminal, after the described specific identity preservation indication received from described network, judges whether to preserve the terminal-specific sign under described previous status according to the preset judgment condition,
Wherein, described preset judgment condition is for meet the following conditions simultaneously:
Described terminal and described network are all supported to strengthen cell forward access channel and are strengthened the cell paging signal;
State in described dedicated control signaling is designated as the cell paging channel status;
Do not carry the terminal-specific sign under described cell paging channel status in described dedicated control signaling:
The multiplexing type selecting of the radio bearer of described terminal comprises high-speed downlink shared channel and strengthens dedicated channel: and
Comprise described specific identity in system broadcasts or dedicated control signaling and preserve indication.
3. method according to claim 2, is characterized in that, carries described specific identity and preserve indication in described dedicated control signaling.
4. method according to claim 3, is characterized in that, described dedicated control signaling comprises that radio bearer is reshuffled, transmission channel is reshuffled or physical channel is reshuffled.
5. method according to claim 2, is characterized in that, carries described specific identity and preserve indication in system broadcasts.
6. method according to claim 5, is characterized in that, described system broadcasts is system broadcasts piece 3 or system broadcasts piece 5.
7. a system of preserving the terminal-specific sign, is characterized in that, described system comprises:
The dedicated control signaling dispensing device, be arranged in network, for carry out notification terminal by dedicated control signaling, enters the cell paging channel status; And
Terminal-specific sign save set, be arranged in described terminal, for when meeting predetermined condition, preserves the terminal-specific sign under previous status,
Wherein, described predetermined condition is: described terminal goes out to need to preserve the terminal-specific sign under described previous status according to the preset judgment condition judgment,
Wherein, described preset judgment condition is for meet the following conditions simultaneously:
Described terminal and described network are all supported to strengthen cell forward access channel and are strengthened the cell paging signal;
State in described dedicated control signaling is designated as the cell paging channel status;
Do not carry the terminal-specific sign under described cell paging channel status in described dedicated control signaling: and
The multiplexing type selecting of the radio bearer of described terminal comprises high-speed downlink shared channel and strengthens dedicated channel.
8. a system of preserving the terminal-specific sign, is characterized in that, described system comprises:
The dedicated control signaling dispensing device, be arranged in network, for carry out notification terminal by dedicated control signaling, enters the cell paging channel status; And
Terminal-specific sign save set, be arranged in described terminal, for when meeting predetermined condition, preserves the terminal-specific sign under previous status,
Wherein, described predetermined condition is: described network is preserved indication by specific identity and is notified described terminal to preserve described terminal-specific sign,
Wherein, also comprise judgment means: for receiving the described specific identity preservation indication from described network in described terminal after, according to the preset judgment condition, judge whether to preserve the terminal-specific sign under described previous status,
Wherein, described preset judgment condition is for meet the following conditions simultaneously:
Described terminal and described network are all supported to strengthen cell forward access channel and are strengthened the cell paging signal;
State in described dedicated control signaling is designated as the cell paging channel status;
Do not carry the terminal-specific sign under described cell paging channel status in described dedicated control signaling:
The multiplexing type selecting of the radio bearer of described terminal comprises high-speed downlink shared channel and strengthens dedicated channel: and
Comprise described specific identity in system broadcasts or dedicated signaling and preserve indication.
9. system according to claim 8, is characterized in that, carries described specific identity and preserve indication in described dedicated control signaling.
10. system according to claim 9, is characterized in that, described dedicated control signaling comprises that radio bearer is reshuffled, transmission channel is reshuffled or physical channel is reshuffled.
11. system according to claim 8, is characterized in that, carries described specific identity and preserve indication in system broadcasts.
12. system according to claim 11, is characterized in that, described system broadcasts is system broadcasts piece 3 or system broadcasts piece 5.
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| CN101400026A (en) * | 2007-09-24 | 2009-04-01 | 中兴通讯股份有限公司 | Data transmission method under cell paging state |
| CN101507338A (en) * | 2006-08-18 | 2009-08-12 | 艾利森电话股份有限公司 | Reducing state conversion time from energy-saving state |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101507338A (en) * | 2006-08-18 | 2009-08-12 | 艾利森电话股份有限公司 | Reducing state conversion time from energy-saving state |
| CN101400026A (en) * | 2007-09-24 | 2009-04-01 | 中兴通讯股份有限公司 | Data transmission method under cell paging state |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210611 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |