WO2022007876A1 - Indicateur précoce de radiomessagerie à base d'informations de commande de liaison descendante - Google Patents
Indicateur précoce de radiomessagerie à base d'informations de commande de liaison descendante Download PDFInfo
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- WO2022007876A1 WO2022007876A1 PCT/CN2021/105158 CN2021105158W WO2022007876A1 WO 2022007876 A1 WO2022007876 A1 WO 2022007876A1 CN 2021105158 W CN2021105158 W CN 2021105158W WO 2022007876 A1 WO2022007876 A1 WO 2022007876A1
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- pei
- field
- message
- dci format
- paging
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
- H04W68/025—Indirect paging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the disclosed embodiments relate generally to wireless communication systems, and, more particularly, to downlink control information-based early paging indication in 5G New Radio (NR) .
- NR New Radio
- 3GPP and 5G New Radio (NR) mobile telecommunication systems provide high data rate, lower latency and improved system performances.
- 5G terrestrial New Radio (NR) access network includes a plurality of base stations (BSs) , e.g., Next Generation Node-Bs (GNBs) , communicating with a plurality of mobile stations referred as user equipment (UEs) .
- BSs base stations
- NNBs Next Generation Node-Bs
- UEs user equipment
- OFDMA Orthogonal Frequency Division Multiple Access
- Multiple access in the downlink is achieved by assigning different sub-bands (i.e., groups of subcarriers, denoted as resource blocks (RBs) ) of the system bandwidth to individual users based on their existing channel condition.
- Physical Downlink Control Channel (PDCCH) is used for downlink scheduling.
- Physical Downlink Shared Channel (PDSCH) is used for downlink data.
- Physical Uplink Control Channel (PUCCH) is used for carrying uplink control information.
- Physical Uplink Shared Channel (PUSCH) is used for uplink data.
- PRACH physical random-access channel
- Paging is a procedure the wireless network uses to find out the location of a UE, before the actual connection establishment. Paging is used to alert the UE of an incoming session (call) . In most cases, the paging process happens while UE is in radio resource control (RRC) idle mode. This means that UE has to monitor whether the networking is sending any paging message to it and it has to spend some energy/power to run this “monitoring” process.
- RRC radio resource control
- the UE periodically wakes up and monitors PDCCH to check for the presence of a paging message. If the PDCCH indicates that a paging message is transmitted in a subframe, then the UE demodulates the paging channel to see if the paging message is directed to it.
- paging reception consumes less than 2.5%of the total power.
- SSB synchronization signal block
- LOOP operations including automatic gain control (AGC) , frequency tracking loop (FTL) , and time tracking loop (TTL)
- MEAS measurements
- the gap between the SSBs for LOOP/MEAS and paging occasion (PO) is longer, and UE may enter into a light sleep mode in the gap. If there is an indication before paging and UE monitors PO only if paging is indicated, then UE can save power consumption not only for paging reception, but also for the light sleep between the last SSB and PO gap. Therefore, an early paging indication (PEI) before paging may be introduced to enable more UE power saving with indication before paging.
- PEI early paging indication
- a Base Station can transmit a PEI message including a PEI to a User Equipment (UE) when the UE is under an idle mode. Then, the UE can receive the PEI message under the idle mode and determine whether to monitor a Physical Downlink Control Channel (PDCCH) scrambled with Paging-Radio Network Temporary Identifier (P-RNTI) at a Paging Occasion (PO) according to the PEI.
- a format of the PEI message including the PEI can include a format of DCI.
- a UE receives a PEI message from a BS when the UE is under an idle mode.
- the PEI message includes a PEI.
- a format of the PEI message includes a DCI format.
- the UE determines whether to monitor a PDCCH scrambled with P-RNTI at a PO according to the PEI.
- a BS transmits a PEI message to a UE when the UE is under an idle mode.
- the PEI message includes a PEI so that the UE can determine whether to monitor a PDCCH scrambled with P-RNTI at a PO according to the PEI.
- a format of the PEI message includes a DCI format.
- Figure 1 illustrates a procedure of paging reception with paging early indication (PEI) in a 5G New Radio (NR) network in accordance with one novel aspect of the present invention.
- PEI paging early indication
- NR 5G New Radio
- FIG. 2 is a simplified block diagram of a UE and a base station in accordance with various embodiments of the present invention.
- FIG. 3 illustrates one embodiment of format of PEI message including PEI in accordance with one novel aspect of the present invention.
- FIG. 4A illustrates one embodiment of format of PEI message including PEI in accordance with one novel aspect of the present invention.
- FIG. 4B illustrates one embodiment of format of PEI message including PEI in accordance with one novel aspect of the present invention.
- FIG. 5A illustrates one embodiment of format of PEI message including PEI in accordance with one novel aspect of the present invention.
- FIG. 5B illustrates one embodiment of format of PEI message including PEI in accordance with one novel aspect of the present invention.
- Figure 6 is a flow chart of a method of utilizing DCI-based PEI for power consumption enhancements from UE perspective in a 5G/NR network in accordance with one novel aspect of the present invention.
- Figure 7 is a flow chart of a method of utilizing DCI-based PEI for power consumption enhancements from network perspective in a 5G/NR network in accordance with one novel aspect of the present invention.
- FIG. 1 illustrates a procedure 100 of paging reception with paging early indication (PEI) in a 5G New Radio (NR) network in accordance with one novel aspect.
- 5G NR access network includes a plurality of base stations (BSs) , e.g., Next Generation Node-Bs (GNBs) , communicating with a plurality of mobile stations referred as user equipment (UEs) .
- BSs base stations
- GNBs Next Generation Node-Bs
- UEs user equipment
- OFDMA Orthogonal Frequency Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- DL downlink
- DL downlink
- PDCCH Physical Downlink Control Channel
- Physical Downlink Shared Channel (PDSCH) is used for downlink data.
- Physical Uplink Control Channel (PUCCH) is used for carrying uplink control information.
- Physical Uplink Shared Channel (PUSCH) is used for uplink data.
- physical random-access channel (PRACH) is used for non-contention-based RACH.
- Paging is a procedure the wireless network uses to find out the location of a UE, before the actual connection establishment. Paging is used to alert/indicate the UE of an incoming session (call) . In most cases, the paging process happens while the UE is in radio resource control (RRC) idle mode. This means that the UE has to monitor whether the networking is sending any paging message to it and it has to spend some energy to run this “monitoring” process.
- RRC idle mode a UE gets into and stays in a sleep mode defined in discontinuous reception (DRX) cycle.
- the UE periodically wakes up and monitors PDCCH to check for the presence of a paging message. If the PDCCH indicates that a paging message is transmitted in a subframe, then the UE demodulates the paging channel to see if the paging message is directed to it.
- paging reception consumes less than 2.5%of the total power.
- SSB synchronization signal block
- LOOP operations including AGC, FTL, and TTL
- MEAS measurements
- PO paging occasion
- the UE may enter light sleep mode in the gap. If there is an indication before paging and the UE monitors PO only if paging is indicated, then the UE can save power consumption not only for paging reception, but also for the light sleep between the last SSB and PO gap. Note that in light sleep mode, the UE does not fully turn off its receiver, and thus the power consumption is higher than that in deep sleep mode, but lower than normal mode. Compared to deep sleep mode, light sleep mode requires less transition power to/from normal mode.
- an indication before paging e.g., paging early indicator (PEI)
- PEI paging early indicator
- a diagram 110 depicts a paging reception procedure with PEI.
- the UE periodically wakes up and checks for PEI first (111) , if no UE in the UE group is paged, then the UE stops and goes to deep sleep. Otherwise, the UE performs paging PDCCH decoding (112) as well as paging PDSCH decoding (113) . If the UE itself is not paged, then the UE stops and goes to sleep. Otherwise, the UE performs connection establishment (114) .
- the UE can skip PO monitoring if PEI indicates negative/no paging in step 111.
- the main receiver of the UE is turned on in every paging cycle, for LOOP, MEAS, and PEI reception. If PEI indicates no paging, then after performing required measurements, the UE can turn off its main receiver and go to deep sleep until the next PEI.
- the UE is required to perform intra-frequency or inter-frequency measurements when the serving cell is below certain threshold. Usually, the UE performs the required measurements when it wakes up for paging monitoring (i.e., every paging cycle) , then the UE will stay in deep sleep until next PEI.
- PEIs are transmitted and are located near SSB bursts, power saving can be achieved not only for PO monitoring but also for light sleep between the last SSB/PEI and the PO monitoring gap and state transitions (e.g., the power mode transition from/to normal mode to/from light sleep mode) , when no UE in the UE group is paged.
- the physical layer design of PEI may be downlink control information (DCI) -based.
- DCI downlink control information
- PEI is included in a PEI message, and a format of the PEI message includes one of DCI formats.
- the BS transmits the PEI message to the UE.
- the UE determines whether to monitor a Physical Downlink Control Channel (PDCCH) scrambled with Paging-Radio Network Temporary Identifier (P-RNTI) at a PO according to PEI included in the PEI message.
- PDCCH Physical Downlink Control Channel
- P-RNTI Paging-Radio Network Temporary Identifier
- FIG. 2 is a simplified block diagram of wireless devices 201 and 211 in accordance with embodiments of the present invention.
- wireless device 201 e.g., a BS
- an antenna 207 transmits and receives radio signal.
- a radio frequency (RF) transceiver module 206 coupled with the antenna, receives RF signals from the antenna, converts them to baseband signals and sends them to processor 203.
- RF transceiver 206 also converts received baseband signals from the processor 203, converts them to RF signals, and sends out to antenna 207.
- Processor 203 processes the received baseband signals and invokes different functional modules and circuits to perform features in wireless device 201.
- Memory 202 stores program instructions and data 210 to control the operations of device 201.
- antenna 217 transmits and receives RF signals.
- RF transceiver module 216 coupled with the antenna, receives RF signals from the antenna, converts them to baseband signals and sends them to processor 213.
- the RF transceiver 216 also converts received baseband signals from the processor 213, converts them to RF signals, and sends out to antenna 217.
- Processor 213 processes the received baseband signals and invokes different functional modules and circuits to perform features in wireless device 211.
- Memory 212 stores program instructions and data 220 to control the operations of wireless device 211.
- wireless devices 201 and 211 also include several functional modules and circuits that can be implemented and configured to perform embodiments of the present invention.
- wireless device 201 is a BS that includes a set of control functional modules and circuit 230.
- Paging and PEI management circuit 232 performs paging and PEI management (e.g., management of a PEI and a paging associated with the PEI) .
- Configuration and control circuit 231 provides different parameters to configure and control UE.
- Wireless device 211 is a UE that includes a set of control functional modules and circuit 240.
- Paging and PEI handling circuit 242 performs paging and PEI handling (e.g., handling a PEI and a determination of whether to monitor a PDCCH scrambled with P-RNTI at a PO according to the PEI) .
- Configuration and control circuit 241 handles configuration and control parameters from the network.
- a wireless device may be both a transmitting device and a receiving device.
- the different functional modules and circuits can be implemented and configured by software, firmware, hardware, and any combination thereof.
- the function modules and circuits when executed by processors 203 and 213 (e.g., via executing program codes 210 and 220) , allow BS 201 and UE 211 to perform embodiments of the present invention.
- BS 201 determines a PEI.
- the PEI is used for UE 211 under an idle mode to determine whether to monitor a PDCCH scrambled with P-RNTI at a PO.
- BS 201 transmits a PEI message including the PEI to UE 211.
- a format of the PEI message includes a DCI format.
- UE 211 receives the message including the PEI from BS 201.
- UE 211 determines whether to monitor a PDCCH scrambled with P-RNTI at a PO according to the PEI.
- Figure 3 illustrates one embodiment of a format of a PEI message including a PEI in accordance with one novel aspect.
- a format of a PEI message 300 includes a DCI format 1_0.
- the PEI message 300 may include: a field 301 of short message indicator, a field 302 of short message, a field 303 of frequency domain resource alignment, a field 304 a time domain resource alignment, a field 305 of Virtual Resource Block (VRB) to Physical Resource Block (PRB) mapping, a field 306 of modulation and coding scheme, a field 307 of Transport Block (TB) scaling and a field 308 of reserved bits.
- VRB Virtual Resource Block
- PRB Physical Resource Block
- TB Transport Block
- At least one of the fields 301 to 308 can be reused/repurposed as the PEI, i.e., at least one of the fields 301 to 308 can be configured as the PEI.
- a field of at least one unused bit of the field 301 of short message indicator can be reused/repurposed as the PEI, i.e., the field of the at least one unused bit of the field 301 of short message indicator can be configured as the PEI.
- a bit of the field 302 of short message is used as system information (SI) update
- a bit of the field 302 of short message is used as Earthquake and Tsunami Warning System (ETWS) /Commercial Mobile Alert System (CMAS) notification
- a field of at least one unused bit of the field 302 of short message can be reused/repurposed as the PEI, i.e., in addition to the bit used as SI update and the bit used as ETWS/CMAS notification, the field of at least one unused bit of the field 302 can be configured as the PEI.
- At least one of the fields 301 to 308 can be configured as an indicator for indicating availability of RS set (s) .
- the field of at least one unused bit of the field 301 of short message indicator can be reused/repurposed as the indicator for indicating availability of RS set (s) , i.e., the field of the at least one unused bit of the field 301 of short message indicator can be configured as the indicator for indicating availability of RS set (s) .
- the field of at least one unused bit of the field 302 of short message can be reused/repurposed as the indicator for indicating availability of RS set (s) , i.e., the field of at least one unused bit of the field 302 can be configured as the indicator for indicating availability of RS set (s) .
- the PEI message 300 may include a cyclic redundancy check (CRC) field (not shown in figure 3) scrambling by P-RNTI.
- CRC cyclic redundancy check
- FIG. 4A illustrates one embodiment of a format of a PEI message including PEI (s) in accordance with one novel aspect.
- a format of a PEI message 400a includes a DCI format 2_6.
- the PEI message 400a may include: at least one bit 401a configured as PEI (s) for one or more UE(s) under idle mode, and a plurality of fields 402a of wake-up signal (s) (WUS (s) ) and SCell dormancy indication (s) (SDI (s) ) for one or more UE (s) under connected mode.
- WUS wake-up signal
- SDI SCell dormancy indication
- X bit (s) 401a can be configured as the PEI (s) , and X can be configured by system information or be calculated according to the number of PO (s) and/or sub-groups indicated by the corresponding PEI.
- Figure 4B illustrates one embodiment of a format of a PEI message including PEI (s) in accordance with one novel aspect.
- a format of a PEI message 400b includes a DCI format 2_6.
- the PEI message 400b may include: at least one bit 401b configured as PEI (s) for one or more UE (s) under idle mode, at least one bit 402b of indicating availability of RS set (s) , and a plurality of fields 403b of WUS (s) and SDI (s) for one or more UE (s) under connected mode.
- X bit (s) 401b can be configured as the PEI (s) , and X can be configured by system information or be calculated according to the number of PO (s) and/or sub-groups indicated by the corresponding PEI.
- Y bit (s) 402b can be used for indicating availability of RS set (s) , and Y is bits, where N is the number of RS set (s) .
- a size of the PEI message 400a or 400b may be configured by system information or calculated according to the number of PO (s) and/or subgroups indicated by the PEI (s) included in the PEI message 400a or 400b.
- the PEI message 400a and 400b may respectively include a CRC field (not shown in figures 4A and 4B) scrambling by P-RNTI or a dedicated new RNTI (e.g., reserved RNTI which are 65520-65533) .
- FIG. 5A illustrates one embodiment of a format of a PEI message including PEI (s) in accordance with one novel aspect.
- a format of a PEI message 500a includes a new DCI format.
- the PEI message 500a may include: a bit 501a of SI update, a bit 502a of ETWS/CMAS notification, and at least one bit 503a configured as PEI (s) .
- X bit (s) 503a can be configured as the PEI (s) , and X can be configured by system information or be calculated according to the number of PO (s) and/or sub-groups indicated by the corresponding PEI.
- FIG. 5B illustrates one embodiment of a format of a PEI message including PEI (s) in accordance with one novel aspect.
- a format of a PEI message 500b includes a new DCI format.
- the PEI message 500a includes: a bit 501b of SI update, a bit 502b of ETWS/CMAS notification, at least one bit 503b of indicating availability of RS set (s) , and at least one bit 504b configured as PEI (s) .
- X bit (s) 504b can be configured as the PEI, and X can be configured by system information or be calculated according to the number of PO (s) and/or sub-groups indicated by this PEI.
- Y bit(s) 503b can be used for indicating availability of RS set (s) , and Y is bits, where N is the number of RS set (s) .
- a size of the PEI message 500a or 500b may be configured by system information or calculated according to the number of PO (s) and/or subgroups indicated by the PEI (s) included in the PEI message 500a or 500b.
- the PEI messages 500a and 500b may respectively include a CRC field (not shown in figures 5A and 5B) scrambling by P-RNTI or a dedicated new RNTI (e.g., reserved RNTI which are 65520-65533) .
- the PEI may be signaled via a PEI message having DCI format and transmitted in given search space (SS) .
- the given SS for the PEI may include a paging SS.
- an identification (e.g., search Space Id) of the paging SS is “0”
- TS Technical Specification
- an identification (e.g., search Space Id) of the paging SS is not “0”
- the given SS for PEI may include a dedicated SS.
- the design of the dedicated SS may follow the rules of common search space set type 0A (i.e., Type0A-PDCCH) , type 1 (i.e., Type1-PDCCH) or type 2 (i.e., Type2-PDCCH) .
- a CORESET indicated in the SS configuration i.e., the CORESET corresponding to the given SS is used.
- the UE may assume that the same PEI message including the PEI is repeated in all transmission beams and thus the selection of the beam (s) for the reception of the PEI message including the PEI is up to UE implementation.
- An occasion for the PEI is a set of S consecutive PDCCH monitoring occasions, where S is the number of actual transmitted SSBs determined according to a parameter of ssb-Position In Burst in system information block-1 (SIB1) .
- the BS may transmit the PEI message including PEI via all transmission beams associated with the UE. Then the UE assumes that the same PEI message including the PEI is repeated in all transmission beams and selects at least one of a plurality of transmission beams for receiving the PEI message.
- FIG. 6 is a flow chart of a method of utilizing DCI-based PEI for power consumption enhancements from UE perspective in a 5G/NR network in accordance with one novel aspect.
- a UE receives a PEI message under an idle mode in a wireless communication network.
- the PEI message includes a PEI and a format of the PEI message includes a DCI format.
- the UE determines whether to monitor a PDCCH scrambled with P-RNTI at a PO according to the PEI.
- the DCI format of the PEI message includes a DCI format 1_0.
- the PEI message may include a short message indicator field, a short message field, a frequency domain resource alignment field, a time domain resource alignment field, a VRB-to-PRB mapping field, a modulation and coding scheme field, a TB scaling field and a reserved bits field.
- At least one field of at least one unused bit of the short message indicator field, at least one unused bit of the short message field, the frequency domain resource alignment field, the time domain resource alignment field, the VRB-to-PRB mapping field, the modulation and coding scheme field, the TB scaling field and the reserved bits field is configured as the PEI.
- At least one field of at least one unused bit of the short message indicator field, at least one unused bit of the short message field, the frequency domain resource alignment field, the time domain resource alignment field, the VRB-to-PRB mapping field, the modulation and coding scheme field, the TB scaling field and the reserved bits field is configured for indicating availability of RS set (s) .
- the DCI format of the PEI message includes a DCI format 2_6.
- the PEI message may include at least one bit configured as the PEI (s) for one or more UEs, and a plurality of fields of WUS and SDI for one or more UEs.
- the PEI message may include at least one bit configured as the PEI (s) for one or more UEs, at least one bit of indicating availability of RS set(s) , and a plurality of fields of WUS and SDI for one or more UEs.
- the DCI format includes a new DCI format.
- the PEI message may include a bit of SI update, a bit of ETWS/CMAS notification, and at least one bit configured as PEI.
- the PEI message may include a bit of SI update, a bit of ETWS/CMAS notification, at least one bit of indicating availability of RS set and at least one bit configured as PEI.
- FIG. 7 is a flow chart of a method of utilizing DCI-based PEI for power consumption enhancements from network perspective in a 5G/NR network in accordance with one novel aspect.
- a BS determines a PEI.
- the PEI is used for a UE under an idle mode to determine whether to monitor a PDCCH scrambled with P-RNTI at a PO.
- the BS transmits a PEI message including the PEI to the UE.
- a format of the PEI message includes a DCI format.
- the DCI format of the PEI message includes a DCI format 1_0.
- the PEI message may include a short message indicator field, a short message field, a frequency domain resource alignment field, a time domain resource alignment field, a VRB-to-PRB mapping field, a modulation and coding scheme field, a TB scaling field and a reserved bits field.
- At least one field of at least one unused bit of the short message indicator field, at least one unused bit of the short message field, the frequency domain resource alignment field, the time domain resource alignment field, the VRB-to-PRB mapping field, the modulation and coding scheme field, the TB scaling field and the reserved bits field is configured as the PEI.
- At least one field of at least one unused bit of the short message indicator field, at least one unused bit of the short message field, the frequency domain resource alignment field, the time domain resource alignment field, the VRB-to-PRB mapping field, the modulation and coding scheme field, the TB scaling field and the reserved bits field is configured for indicating availability of RS set (s) .
- the DCI format of the PEI message includes a DCI format 2_6.
- the PEI message may include at least one bit configured as the PEI (s) for one or more UEs, and a plurality of fields of WUS and SDI for one or more UEs.
- the message when RS information is supported and multiple RS sets are broadcasted to the UE under idle mode, the message may include at least one bit configured as the PEI (s) for one or more UEs, at least one bit of indicating availability of RS set (s) , and a plurality of fields of WUS and SDI for one or more UEs.
- the DCI format of the PEI message includes a new DCI format.
- the PEI message may include a bit of SI update, a bit of ETWS/CMAS notification, and at least one bit configured as PEI.
- the message may include a bit of SI update, a bit of ETWS/CMAS notification, at least one bit of indicating availability of RS set and at least one bit configured as PEI.
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Abstract
L'invention concerne un procédé d'introduction d'une indication de radiomessagerie précoce (PEI) pour des améliorations de consommation d'énergie dans un réseau 5G/NR. En particulier, une station de base (BS) peut transmettre un message comprenant une PEI à un équipement utilisateur (UE) lorsque l'UE est dans un mode veille. Ensuite, l'UE peut recevoir la PEI dans le mode veille et déterminer s'il faut surveiller une occasion de radiomessagerie (PO) selon la PEI. Dans certains modes de réalisation, un format du message comprenant la PEI peut comprendre un format de DCI.
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CN202180044150.0A CN115702593A (zh) | 2020-07-08 | 2021-07-08 | 基于下行链路控制信息的早期寻呼指示方法及用户设备 |
EP21838600.1A EP4173386A1 (fr) | 2020-07-08 | 2021-07-08 | Indicateur précoce de radiomessagerie à base d'informations de commande de liaison descendante |
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US202063049189P | 2020-07-08 | 2020-07-08 | |
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Cited By (3)
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US20220046585A1 (en) * | 2020-08-04 | 2022-02-10 | Samsung Electronics Co., Ltd. | Method and apparatus for performing paging in a communication system |
CN115316005A (zh) * | 2022-01-30 | 2022-11-08 | 上海移远通信技术股份有限公司 | 无线通信的方法和装置 |
WO2024031382A1 (fr) * | 2022-08-09 | 2024-02-15 | 北京小米移动软件有限公司 | Procédé et appareil de transmission d'informations, dispositif de communication et support de stockage |
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- 2021-07-08 EP EP21838600.1A patent/EP4173386A1/fr active Pending
- 2021-07-08 WO PCT/CN2021/105158 patent/WO2022007876A1/fr unknown
- 2021-07-08 CN CN202180044150.0A patent/CN115702593A/zh active Pending
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Also Published As
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EP4173386A1 (fr) | 2023-05-03 |
CN115702593A (zh) | 2023-02-14 |
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