WO2021223203A1 - Auto-adaptation d'ue pour connexion de session pdu dans un réseau autonome 5g - Google Patents

Auto-adaptation d'ue pour connexion de session pdu dans un réseau autonome 5g Download PDF

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Publication number
WO2021223203A1
WO2021223203A1 PCT/CN2020/089130 CN2020089130W WO2021223203A1 WO 2021223203 A1 WO2021223203 A1 WO 2021223203A1 CN 2020089130 W CN2020089130 W CN 2020089130W WO 2021223203 A1 WO2021223203 A1 WO 2021223203A1
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WIPO (PCT)
Prior art keywords
pdu session
data rate
request message
downlink
uplink
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PCT/CN2020/089130
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English (en)
Inventor
Hao Zhang
Quanling ZHANG
Xuefeng Chen
Chaofeng HUI
Jian Li
Fojian ZHANG
Yi Liu
Yuankun ZHU
Tianya LIN
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Qualcomm Incorporated
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Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2020/089130 priority Critical patent/WO2021223203A1/fr
Publication of WO2021223203A1 publication Critical patent/WO2021223203A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Definitions

  • aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for user equipment self-adaptation for a protocol data unit session connection in a 5G standalone network.
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts, etc. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc. ) .
  • available system resources e.g., bandwidth, transmit power, etc.
  • multiple-access systems examples include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE Advanced (LTE-A) systems, code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems, to name a few.
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • LTE-A LTE Advanced
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single-carrier frequency division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • New radio e.g., 5G NR
  • 5G NR is an example of an emerging telecommunication standard.
  • NR is a set of enhancements to the LTE mobile standard promulgated by 3GPP.
  • NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using OFDMA with a cyclic prefix (CP) on the downlink (DL) and on the uplink (UL) .
  • CP cyclic prefix
  • NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.
  • MIMO multiple-input multiple-output
  • the method generally includes transmitting a first PDU session establishment request message indicating a data rate, less than a maximum data rate, for uplink, downlink, or both.
  • the method generally includes receiving a PDU session release message, in response to the first PDU session request message.
  • the method generally includes, in response to receiving the PDU session release message, transmitting a second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink.
  • the method generally includes receiving a first PDU session establishment request message indicating a data rate, less than a maximum data rate, for uplink, downlink, or both.
  • the method generally includes transmitting a PDU session release message, in response to the first PDU session request message.
  • the method generally includes receiving a second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink.
  • aspects of the present disclosure provide means for, apparatus, processors, and computer-readable mediums for performing the methods described herein.
  • the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims.
  • the following description and the appended drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.
  • FIG. 1 is a block diagram conceptually illustrating an example telecommunications system, in accordance with certain aspects of the present disclosure.
  • FIG. 2 is a block diagram conceptually illustrating a design of an example a base station (BS) and user equipment (UE) , in accordance with certain aspects of the present disclosure.
  • BS base station
  • UE user equipment
  • FIG. 3 is an example frame format for new radio (NR) , in accordance with certain aspects of the present disclosure.
  • FIG. 4 is an illustration of an example integrity protection maximum data rate information element, in accordance with certain aspects of the present disclosure.
  • FIG. 5 is an illustration of another example integrity protection maximum data rate information element, in accordance with certain aspects of the present disclosure.
  • FIG. 6 is a call flow diagram illustrating example signaling for a protocol data unit (PDU) session connection in a 5G standalone (SA) network, in accordance with aspects of the present disclosure.
  • PDU protocol data unit
  • SA 5G standalone
  • FIG. 7 is a call flow diagram illustrating example signaling for UE self-adaptation PDU session connection in a 5G SA network, in accordance with aspects of the present disclosure.
  • FIG. 8 is a flow diagram illustrating example operations for wireless communication by a UE, in accordance with certain aspects of the present disclosure.
  • FIG. 9 is a flow diagram illustrating example operations for wireless communication by a BS, in accordance with certain aspects of the present disclosure.
  • FIG. 10 illustrates a communications device that may include various components configured to perform operations for the techniques disclosed herein in accordance with aspects of the present disclosure.
  • FIG. 11 illustrates a communications device that may include various components configured to perform operations for the techniques disclosed herein in accordance with aspects of the present disclosure.
  • aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable mediums for user equipment (UE) self-adaptation for a protocol data unit (PDU) session connection in a 5G standalone (SA) network.
  • UE user equipment
  • PDU protocol data unit
  • a network only accepts a PDU session request for a maximum data rate.
  • the network rejects the request.
  • the UE will repeat the PDU session request for less than the maximum data rate. In this case, the UE may go a long time without receiving any data service.
  • the UE when the PDU session is rejection, the UE sends a PDU session request for the maximum data rate for both uplink and downlink.
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies.
  • RAT may also be referred to as a radio technology, an air interface, etc.
  • a frequency may also be referred to as a carrier, a subcarrier, a frequency channel, a tone, a subband, etc.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • the techniques described herein may be used for various wireless networks and radio technologies. While aspects may be described herein using terminology commonly associated with 3G, 4G, and/or new radio (e.g., 5G NR) wireless technologies, aspects of the present disclosure can be applied in other generation-based communication systems.
  • 3G, 4G, and/or new radio e.g., 5G NR
  • NR access may support various wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g., 80 MHz or beyond) , millimeter wave (mmW) targeting high carrier frequency (e.g., 25 GHz or beyond) , massive machine type communications MTC (mMTC) targeting non-backward compatible MTC techniques, and/or mission critical targeting ultra-reliable low-latency communications (URLLC) .
  • eMBB enhanced mobile broadband
  • mmW millimeter wave
  • mMTC massive machine type communications MTC
  • URLLC ultra-reliable low-latency communications
  • These services may include latency and reliability requirements.
  • These services may also have different transmission time intervals (TTI) to meet respective quality of service (QoS) requirements.
  • TTI transmission time intervals
  • QoS quality of service
  • these services may co-exist in the same subframe.
  • NR supports beamforming and beam direction may be dynamically configured. MIMO transmissions with precoding may also be supported.
  • MIMO configurations in the DL may support up to 8 transmit antennas with multi-layer DL transmissions up to 8 streams and up to 2 streams per UE. Multi-layer transmissions with up to 2 streams per UE may be supported. Aggregation of multiple cells may be supported with up to 8 serving cells.
  • FIG. 1 illustrates an example wireless communication network 100 in which aspects of the present disclosure may be performed.
  • the wireless communication network 100 may be an NR system (e.g., a 5G NR network) .
  • the wireless communication network 100 may be in communication with a core network 132.
  • the core network 132 may in communication with one or more base station (BSs) 110 and/or user equipment (UE) 120 in the wireless communication network 100 via one or more interfaces.
  • BSs base station
  • UE user equipment
  • the wireless communication network 100 may include a number of BSs 110a-z (each also individually referred to herein as BS 110 or collectively as BSs 110) and other network entities.
  • a BS 110 may provide communication coverage for a particular geographic area, sometimes referred to as a “cell” , which may be stationary or may move according to the location of a mobile BS 110.
  • the BSs 110 may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in wireless communication network 100 through various types of backhaul interfaces (e.g., a direct physical connection, a wireless connection, a virtual network, or the like) using any suitable transport network.
  • backhaul interfaces e.g., a direct physical connection, a wireless connection, a virtual network, or the like
  • the BSs 110a, 110b and 110c may be macro BSs for the macro cells 102a, 102b and 102c, respectively.
  • the BS 110x may be a pico BS for a pico cell 102x.
  • the BSs 110y and 110z may be femto BSs for the femto cells 102y and 102z, respectively.
  • a BS may support one or multiple cells.
  • a network controller 130 may couple to a set of BSs 110 and provide coordination and control for these BSs 110 (e.g., via a backhaul) .
  • the BSs 110 communicate with UEs 120a-y (each also individually referred to herein as UE 120 or collectively as UEs 120) in the wireless communication network 100.
  • the UEs 120 (e.g., 120x, 120y, etc. ) may be dispersed throughout the wireless communication network 100, and each UE 120 may be stationary or mobile.
  • Wireless communication network 100 may also include relay stations (e.g., relay station 110r) , also referred to as relays or the like, that receive a transmission of data and/or other information from an upstream station (e.g., a BS 110a or a UE 120r) and sends a transmission of the data and/or other information to a downstream station (e.g., a UE 120 or a BS 110) , or that relays transmissions between UEs 120, to facilitate communication between devices.
  • relay stations e.g., relay station 110r
  • relays or the like that receive a transmission of data and/or other information from an upstream station (e.g., a BS 110a or a UE 120r) and sends a transmission of the data and/or other information to a downstream station (e.g., a UE 120 or a BS 110) , or that relays transmissions between UEs 120, to facilitate communication between devices.
  • the BSs 110 and UEs 120 may be configured for UE self-adaptation for PDU session connection in a 5G SA network.
  • the BS 110a includes a PDU session manager 112 and the UE 120a includes a PDU session manager 122.
  • the PDU session manager 122 may be configured to transmit, and the PDU session manager 112 to receive, a first PDU session establishment request message indicating a data rate, less than a maximum data rate, for uplink, downlink, or both.
  • the PDU session manager 122 may be configured to receive, the PDU session manager 112 to transmit, a PDU session release message, in response to the first PDU session request message.
  • the PDU session manager 122 may be configured to transmit, and the PDU session manager 112 to receive, in response to receiving the PDU session release message, a second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink, in accordance with aspects of the present disclosure.
  • the PDU session manager 122 may be configured to receive, and the PDU session manager 112 to transmit, a PDU session establishment accept message, in response to the second PDU session establishment request message.
  • FIG. 2 illustrates example components of BS 110a and UE 120a (e.g., in the wireless communication network 100 of FIG. 1) , which may be used to implement aspects of the present disclosure.
  • a transmit processor 220 may receive data from a data source 212 and control information from a controller/processor 240.
  • the control information may be for the physical broadcast channel (PBCH) , physical control format indicator channel (PCFICH) , physical hybrid ARQ indicator channel (PHICH) , physical downlink control channel (PDCCH) , group common PDCCH (GC PDCCH) , etc.
  • the data may be for the physical downlink shared channel (PDSCH) , etc.
  • a medium access control (MAC) -control element (MAC-CE) is a MAC layer communication structure that may be used for control command exchange between wireless nodes.
  • the MAC-CE may be carried in a shared channel such as a physical downlink shared channel (PDSCH) , a physical uplink shared channel (PUSCH) , or a physical sidelink shared channel (PSSCH) .
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • PSSCH physical sidelink shared channel
  • the processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively.
  • the transmit processor 220 may also generate reference symbols, such as for the primary synchronization signal (PSS) , secondary synchronization signal (SSS) , and channel state information reference signal (CSI-RS) .
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, and/or the reference symbols, if applicable, and may provide output symbol streams to the modulators (MODs) 232a-232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc. ) to obtain an output sample stream.
  • MIMO multiple-input multiple-output
  • Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • Downlink signals from modulators 232a-232t may be transmitted via the antennas 234a-234t, respectively.
  • the antennas 252a-252r may receive the downlink signals from the BS 110a and may provide received signals to the demodulators (DEMODs) in transceivers 254a-254r, respectively.
  • Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples.
  • Each demodulator may further process the input samples (e.g., for OFDM, etc. ) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from all the demodulators 254a-254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • a receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 120a to a data sink 260, and provide decoded control information to a controller/processor 280.
  • a transmit processor 264 may receive and process data (e.g., for the physical uplink shared channel (PUSCH) ) from a data source 262 and control information (e.g., for the physical uplink control channel (PUCCH) from the controller/processor 280.
  • the transmit processor 264 may also generate reference symbols for a reference signal (e.g., for the sounding reference signal (SRS) ) .
  • the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by the modulators in transceivers 254a-254r (e.g., for SC-FDM, etc. ) , and transmitted to the BS 110a.
  • the uplink signals from the UE 120a may be received by the antennas 234, processed by the modulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 120a.
  • the receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller/processor 240.
  • the memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively.
  • a scheduler 244 may schedule UEs for data transmission on the downlink and/or uplink.
  • Antennas 252, processors 266, 258, 264, and/or controller/processor 280 of the UE 120a and/or antennas 234, processors 220, 230, 238, and/or controller/processor 240 of the BS 110a may be used to perform the various techniques and methods described herein.
  • the controller/processor 240 of the BS 110a has a PDU session manager 241 that may be configured for user equipment self-adaptation for protocol data unit session connection in a 5G standalone network, according to aspects described herein.
  • FIG. 2 the controller/processor 240 of the BS 110a has a PDU session manager 241 that may be configured for user equipment self-adaptation for protocol data unit session connection in a 5G standalone network, according to aspects described herein.
  • the controller/processor 280 of the UE 120a has a PDU session manager 281 that may be configured for UE self-adaptation for PDU session connection in a 5G SA network, according to aspects described herein. Although shown at the controller/processor, other components of the UE 120a and BS 110a may be used to perform the operations described herein.
  • NR may utilize orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) on the uplink and downlink.
  • OFDM orthogonal frequency division multiplexing
  • CP cyclic prefix
  • NR may support half-duplex operation using time division duplexing (TDD) .
  • OFDM and single-carrier frequency division multiplexing (SC-FDM) partition the system bandwidth into multiple orthogonal subcarriers, which are also commonly referred to as tones, bins, etc. Each subcarrier may be modulated with data. Modulation symbols may be sent in the frequency domain with OFDM and in the time domain with SC-FDM.
  • the spacing between adjacent subcarriers may be fixed, and the total number of subcarriers may be dependent on the system bandwidth.
  • the minimum resource allocation may be 12 consecutive subcarriers.
  • the system bandwidth may also be partitioned into subbands. For example, a subband may cover multiple RBs.
  • NR may support a base subcarrier spacing (SCS) of 15 KHz and other SCS may be defined with respect to the base SCS (e.g., 30 kHz, 60 kHz, 120 kHz, 240 kHz, etc. ) .
  • SCS base subcarrier spacing
  • FIG. 3 is a diagram showing an example of a frame format 300 for NR.
  • the transmission timeline for each of the downlink and uplink may be partitioned into units of radio frames.
  • Each radio frame may have a predetermined duration (e.g., 10 ms) and may be partitioned into 10 subframes, each of 1 ms, with indices of 0 through 9.
  • Each subframe may include a variable number of slots (e.g., 1, 2, 4, 8, 16, ...slots) depending on the SCS.
  • Each slot may include a variable number of symbol periods (e.g., 7 or 14 symbols) depending on the SCS.
  • the symbol periods in each slot may be assigned indices.
  • a mini-slot which may be referred to as a sub-slot structure, refers to a transmit time interval having a duration less than a slot (e.g., 2, 3, or 4 symbols) .
  • Each symbol in a slot may indicate a link direction (e.g., DL, UL, or flexible) for data transmission and the link direction for each subframe may be dynamically switched.
  • the link directions may be based on the slot format.
  • Each slot may include DL/UL data as well as DL/UL control information.
  • the 5G session manager (5GSM) capability information element can be used to indicate UE capability related to the PDU session management.
  • the 5GSM IE may include an indication of the type of the IE and the capability information contents.
  • the 5GSM capability IE may have a minimum length of 3 octets and a maximum length of 15 octets.
  • An example 5GSM capability IE can be found in Figure 9.11.4.1.1 and table 9.11.4.1.1 of the IEEE TS 124.501 wireless standards.
  • the maximum data rate for a UE is specific to the UE and is contained in the integrity protection maximum data rate element shown in FIG. 4.
  • the purpose of the integrity protection maximum data rate information element is for the UE to indicate to the network the maximum data rate per UE for user-plane integrity protection for uplink and the maximum data rate per UE for user-plane integrity protection for downlink that are supported by the UE.
  • the integrity protection maximum data rate may have a length of 3 octets as illustrated in FIG. 4, and may contain both an uplink data rate 410 and a downlink data rate 415.
  • the bit values for the uplink data rate 410 and the downlink data rate 415 can indicate the integrity protection maximum data rate for uplink and/or downlink as a data rate less than the maximum data rate (e.g., 64kbps as shown in FIG. 5) or the bit values can indicate the full (e.g., maximum) data rate.
  • the maximum data rate e.g. 64kbps as shown in FIG. 5
  • the bit values can indicate the full (e.g., maximum) data rate.
  • the lower data rate may be the default indication for a PDU session request set by a UE, however, some networks may only accept a UE when the UE has the maximum data rate for both the uplink and the downlink.
  • a 5GSM cause IE can be to indicate the reason why a 5GSM request is rejected.
  • the 5GSM cause IE may have 2 octets length.
  • An example 5GSM cause IE can be found in Figure 9.11.4.2.1 and table 9.11.4.2.1 of the IEEE TS 124.501 wireless standards.
  • UE may face a packet-switched (PS) call failure resulting from the network limitation.
  • PS packet-switched
  • FIG. 6 is a call flow illustrating example operations for a UE continuing to send a PDU session request indicating the lower data rate that is rejected by the network.
  • the UE may send a registration request at 602, which the 5G network 605 may accept at 604.
  • the UE may send a PDU session request, at 606, for data service with a data rate of 64 kbps for uplink or downlink.
  • the 5G network 605 sends a PDU session release message at 608.
  • the network may sends the “cause#36” regular deactivation command. This command may terminate the UE data call.
  • the UE modem 603 may forward the EPS deactivated to the UE AP 601, at 610.
  • the UE seeking service within a packet-switched network, may try to reconnect PDU session.
  • the AP 601 may send the mode 603 a call setup request at 612, and the UE may activate the default EPS bearer context at 614.
  • the UE may then repeat the procedure by returning to the step 606 and sending another PDU session request to the 5G network. If the UE again has a 64kbps data rate, the network may again cause the UE data call to terminate. This loop procedure 616may make packet-switched service unavailable to the UE for a long period of time.
  • aspects of the disclosure provide for the user equipment (UE) to self-adapt for protocol data unit (PDU) session connection.
  • the UE may request a full data rate in the PDU session request message in response to receiving a PDU session rejection from the network. This may allow a UE to avoid the continuously sending the PDU session request message, for example, as done in the loop procedure 616 shown in FIG. 6, which may be caused by the recursive PDU session release in a 5G standalone (SA) network.
  • SA 5G standalone
  • FIG. 7 is a call flow illustrating example operations for UE self-adaptation for a PDU session connection, in accordance with aspects of the present disclosure.
  • the UE may send an initial registration request at 702, which the 5G network 705 may accept at 704.
  • the UE then sends a first PDU session request at 706.
  • the PDU session request message may indicate less than a maximum data rate (e.g., the integrity protection maximum data rate) , such as 64 kbps which may be a default data rate, for the uplink, the downlink, or both.
  • the UE receives a PDU session release message at 708 from the 5G cell 705.
  • the PDU session release may include a cause (e.g., a cause#36) rejecting the PDU session connection.
  • the cause may indicate a regular deactivation command.
  • the UE data call is terminated at 710.
  • the UE modem 703 sends the evolved packet service (EPS) deactivated message to the UE application processor (AP)
  • the UE may reset its data rate to the maximum data rate for both the uplink and the downlink to be compatible with the network.
  • the UE initiates a setup data call request at 712.
  • the UE AP 701 sends the call setup request message to the UE modem 703 at 712.
  • the UE can avoid continuously requesting and getting rejected by the 5G cell and can get data service more quickly.
  • the UE can avoid falling back to a different network, such as LTE, and/or changing its mode to a non-standalone mode.
  • FIG. 8 is a flow diagram illustrating example operations 800 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 800 may be performed, for example, by UE (e.g., such as a UE 120a in the wireless communication network 100) .
  • Operations 800 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 280 of FIG. 2) .
  • the transmission and reception of signals by the UE in operations 800 may be enabled, for example, by one or more antennas (e.g., antennas 252 of FIG. 2) .
  • the transmission and/or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller/processor 280) obtaining and/or outputting signals.
  • the operations 800 may begin, at 805, by a UE transmitting a first PDU session establishment request message indicating a data rate, less than a maximum data rate, for uplink, downlink, or both.
  • the indication of the data rate in the first and second PDU session establishment request messages is provided in an integrity protection maximum data rate information element (IE) .
  • the data rate may be less than the maximum data rate.
  • the data rate may be a 64 kbps data rate.
  • the PDU session establishment request messages may be transmitted to a 5G network for a standalone connection to the 5G network
  • a UE receives a PDU session release message, in response to the first PDU session request message.
  • a UE in response to receiving the PDU session release message, transmitting a second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink.
  • transmitting the second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink is in response to receiving the PDU session release message indicating a cause code associated with regular deactivation.
  • the cause code may be the cause code #36.
  • the UE may receive a PDU session establishment accept message, in response to the second PDU session establishment request message.
  • the UE may begin data transfer after receiving the PDU session establishment accept message.
  • FIG. 9 is a flow diagram illustrating example operations 900 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 900 may be performed, for example, by a BS (e.g., such as the BS 110a in the wireless communication network 100) .
  • the operations 900 may be complimentary operations by the BS to the operations 800 performed by the UE.
  • Operations 900 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 240 of FIG. 2) .
  • the transmission and reception of signals by the BS in operations 900 may be enabled, for example, by one or more antennas (e.g., antennas 234 of FIG. 2) .
  • the transmission and/or reception of signals by the BS may be implemented via a bus interface of one or more processors (e.g., controller/processor 240) obtaining and/or outputting signals.
  • the operations 900 may begin, at 905, by a BS receiving a first PDU session establishment request message indicating a data rate, less than a maximum data rate, for uplink, downlink, or both.
  • a BS transmits a PDU session release message, in response to the first PDU session request message.
  • a BS receives a second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink
  • FIG. 10 illustrates a communications device 1000 that may include various components (e.g., corresponding to means-plus-function components) configured to perform operations for the techniques disclosed herein, such as the operations illustrated in FIG. 8.
  • the communications device 1000 includes a processing system 1002 coupled to a transceiver 1008 (e.g., a transmitter and/or a receiver) .
  • the transceiver 1008 is configured to transmit and receive signals for the communications device 1000 via an antenna 1010, such as the various signals as described herein.
  • the processing system 1002 may be configured to perform processing functions for the communications device 1000, including processing signals received and/or to be transmitted by the communications device 1000.
  • the processing system 1002 includes a processor 1004 coupled to a computer-readable medium/memory 1012 via a bus 1006.
  • the computer-readable medium/memory 1012 is configured to store instructions (e.g., computer-executable code) that when executed by the processor 1004, cause the processor 1004 to perform the operations illustrated in FIG. 8, or other operations for performing the various techniques discussed herein for UE self-adaptation for PDU session connection in a 5G SA network.
  • computer-readable medium/memory 1012 stores code 1014 for transmitting a first PDU session establishment request message indicating a data rate, less than a maximum data rate, for uplink, downlink, or both; code 1016 for receiving a PDU session release message, in response to the first PDU session request message; and/or code 1018 for, in response to receiving the PDU session release message, transmitting a second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink.
  • the processor 1004 has circuitry configured to implement the code stored in the computer-readable medium/memory 1012.
  • the processor 1004 includes circuitry 1020 for transmitting a first PDU session establishment request message indicating a data rate, less than a maximum data rate, for uplink, downlink, or both; circuitry 1022 for receiving a PDU session release message, in response to the first PDU session request message; and/or circuitry 1024 for transmitting a second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink
  • FIG. 11 illustrates a communications device 1100 that may include various components (e.g., corresponding to means-plus-function components) configured to perform operations for the techniques disclosed herein, such as the operations illustrated in FIG. 9.
  • the communications device 1100 includes a processing system 1102 coupled to a transceiver 1108 (e.g., a transmitter and/or a receiver) .
  • the transceiver 1108 is configured to transmit and receive signals for the communications device 1100 via an antenna 1110, such as the various signals as described herein.
  • the processing system 1102 may be configured to perform processing functions for the communications device 1100, including processing signals received and/or to be transmitted by the communications device 1100.
  • the processing system 1102 includes a processor 1104 coupled to a computer-readable medium/memory 1112 via a bus 1106.
  • the computer-readable medium/memory 1112 is configured to store instructions (e.g., computer-executable code) that when executed by the processor 1104, cause the processor 1104 to perform the operations illustrated in FIG. 9, or other operations for performing the various techniques discussed herein for UE self-adaptation for PDU session connection in a 5G SA network.
  • computer-readable medium/memory 1112 stores code 1114 for receiving a first PDU session establishment request message indicating a data rate, less than a maximum data rate, for uplink, downlink, or both; code 1116 for transmitting a PDU session release message, in response to the first PDU session request message; and/or code 1118 for receiving a second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink.
  • the processor 1104 has circuitry configured to implement the code stored in the computer-readable medium/memory 1112.
  • the processor 1104 includes circuitry 1120 for receiving a first PDU session establishment request message indicating a data rate, less than a maximum data rate, for uplink, downlink, or both; circuitry 1122 for transmitting a PDU session release message, in response to the first PDU session request message; and/or circuitry 1124 for receiving a second PDU session establishment request message indicating the maximum data rate for both the uplink and the downlink.
  • NR e.g., 5G NR
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single-carrier frequency division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • a CDMA network may implement a radio technology such as Universal Terrestrial Radio Access (UTRA) , cdma2000, etc.
  • UTRA Universal Terrestrial Radio Access
  • UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA.
  • cdma2000 covers IS-2000, IS-95 and IS-856 standards.
  • a TDMA network may implement a radio technology such as Global System for Mobile Communications (GSM) .
  • GSM Global System for Mobile Communications
  • An OFDMA network may implement a radio technology such as NR (e.g. 5G RA) , Evolved UTRA (E-UTRA) , Ultra Mobile Broadband (UMB) , IEEE 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDMA, etc.
  • NR e.g. 5G RA
  • E-UTRA Evolved UTRA
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi
  • IEEE 802.16 WiMAX
  • IEEE 802.20 Flash-OFDMA
  • UTRA and E-UTRA are part of Universal Mobile Telecommunication System (UMTS) .
  • LTE and LTE-A are releases of UMTS that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named “3rd Generation Partnership Project” (3GPP) .
  • cdma2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2) .
  • NR is an emerging wireless communications technology under development.
  • the term “cell” can refer to a coverage area of a Node B (NB) and/or a NB subsystem serving this coverage area, depending on the context in which the term is used.
  • NB Node B
  • BS next generation NodeB
  • AP access point
  • DU distributed unit
  • TRP transmission reception point
  • a BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or other types of cells.
  • a macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having an association with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG) , UEs for users in the home, etc. ) .
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • a UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a Customer Premises Equipment (CPE) , a cellular phone, a smart phone, a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, an appliance, a medical device or medical equipment, a biometric sensor/device, a wearable device such as a smart watch, smart clothing, smart glasses, a smart wrist band, smart jewelry (e.g., a smart ring, a smart bracelet, etc.
  • CPE Customer Premises Equipment
  • PDA personal digital assistant
  • WLL wireless local loop
  • MTC machine-type communication
  • eMTC evolved MTC
  • MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a BS, another device (e.g., remote device) , or some other entity.
  • a wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • a network e.g., a wide area network such as Internet or a cellular network
  • Some UEs may be considered Internet-of-Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.
  • IoT Internet-of-Things
  • NB-IoT narrowband IoT
  • a scheduling entity (e.g., a BS) allocates resources for communication among some or all devices and equipment within its service area or cell.
  • the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities utilize resources allocated by the scheduling entity.
  • Base stations are not the only entities that may function as a scheduling entity.
  • a UE may function as a scheduling entity and may schedule resources for one or more subordinate entities (e.g., one or more other UEs) , and the other UEs may utilize the resources scheduled by the UE for wireless communication.
  • a UE may function as a scheduling entity in a peer-to-peer (P2P) network, and/or in a mesh network.
  • P2P peer-to-peer
  • UEs may communicate directly with one another in addition to communicating with a scheduling entity.
  • the methods disclosed herein comprise one or more steps or actions for achieving the methods.
  • the method steps and/or actions may be interchanged with one another without departing from the scope of the claims.
  • the order and/or use of specific steps and/or actions may be modified without departing from the scope of the claims.
  • a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .
  • determining encompasses a wide variety of actions. For example, “determining” may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” may include receiving (e.g., receiving information) , accessing (e.g., accessing data in a memory) and the like. Also, “determining” may include resolving, selecting, choosing, establishing and the like.
  • the various operations of methods described above may be performed by any suitable means capable of performing the corresponding functions.
  • the means may include various hardware and/or software component (s) and/or module (s) , including, but not limited to a circuit, an application specific integrated circuit (ASIC) , or processor.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • PLD programmable logic device
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • an example hardware configuration may comprise a processing system in a wireless node.
  • the processing system may be implemented with a bus architecture.
  • the bus may include any number of interconnecting buses and bridges depending on the specific application of the processing system and the overall design constraints.
  • the bus may link together various circuits including a processor, machine-readable media, and a bus interface.
  • the bus interface may be used to connect a network adapter, among other things, to the processing system via the bus.
  • the network adapter may be used to implement the signal processing functions of the PHY layer.
  • a user interface e.g., keypad, display, mouse, joystick, etc.
  • a user interface e.g., keypad, display, mouse, joystick, etc.
  • the bus may also link various other circuits such as timing sources, peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further.
  • the processor may be implemented with one or more general-purpose and/or special-purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuitry that can execute software. Those skilled in the art will recognize how best to implement the described functionality for the processing system depending on the particular application and the overall design constraints imposed on the overall system.
  • the functions may be stored or transmitted over as one or more instructions or code on a computer readable medium.
  • Software shall be construed broadly to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • Computer-readable media include both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • the processor may be responsible for managing the bus and general processing, including the execution of software modules stored on the machine-readable storage media.
  • a computer-readable storage medium may be coupled to a processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor.
  • the machine-readable media may include a transmission line, a carrier wave modulated by data, and/or a computer readable storage medium with instructions stored thereon separate from the wireless node, all of which may be accessed by the processor through the bus interface.
  • the machine-readable media, or any portion thereof may be integrated into the processor, such as the case may be with cache and/or general register files.
  • machine-readable storage media may include, by way of example, RAM (Random Access Memory) , flash memory, ROM (Read Only Memory) , PROM (Programmable Read-Only Memory) , EPROM (Erasable Programmable Read-Only Memory) , EEPROM (Electrically Erasable Programmable Read-Only Memory) , registers, magnetic disks, optical disks, hard drives, or any other suitable storage medium, or any combination thereof.
  • RAM Random Access Memory
  • ROM Read Only Memory
  • PROM Programmable Read-Only Memory
  • EPROM Erasable Programmable Read-Only Memory
  • EEPROM Electrical Erasable Programmable Read-Only Memory
  • registers magnetic disks, optical disks, hard drives, or any other suitable storage medium, or any combination thereof.
  • the machine-readable media may be embodied in a computer-program product.
  • a software module may comprise a single instruction, or many instructions, and may be distributed over several different code segments, among different programs, and across multiple storage media.
  • the computer-readable media may comprise a number of software modules.
  • the software modules include instructions that, when executed by an apparatus such as a processor, cause the processing system to perform various functions.
  • the software modules may include a transmission module and a receiving module. Each software module may reside in a single storage device or be distributed across multiple storage devices.
  • a software module may be loaded into RAM from a hard drive when a triggering event occurs.
  • the processor may load some of the instructions into cache to increase access speed.
  • One or more cache lines may then be loaded into a general register file for execution by the processor.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared (IR) , radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.
  • Disk and disc include compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.
  • computer-readable media may comprise non-transitory computer-readable media (e.g., tangible media) .
  • computer-readable media may comprise transitory computer-readable media (e.g., a signal) . Combinations of the above should also be included within the scope of computer-readable media.
  • certain aspects may comprise a computer program product for performing the operations presented herein.
  • a computer program product may comprise a computer-readable medium having instructions stored (and/or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein, for example, instructions for performing the operations described herein and illustrated in FIGs. 7-9.
  • modules and/or other appropriate means for performing the methods and techniques described herein can be downloaded and/or otherwise obtained by a user terminal and/or base station as applicable.
  • a user terminal and/or base station can be coupled to a server to facilitate the transfer of means for performing the methods described herein.
  • various methods described herein can be provided via storage means (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc. ) , such that a user terminal and/or base station can obtain the various methods upon coupling or providing the storage means to the device.
  • storage means e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.
  • CD compact disc
  • floppy disk etc.
  • any other suitable technique for providing the methods and techniques described herein to a device can be utilized.

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Abstract

Certains aspects de la présente invention concernent des techniques pour une auto-adaptation d'un équipement d'utilisateur (UE) pour une connexion de session d'unité de données de protocole (PDU) dans un réseau autonome 5G. Un procédé, qui peut être réalisé par un UE, comprend la transmission d'un premier message de demande d'établissement de session PDU indiquant un débit de données, inférieur à un débit de données maximal, pour une liaison montante, une liaison descendante ou les deux, la réception d'un message de libération de session PDU en réponse au premier message de demande de session PDU, et, en réponse à la réception du message de libération de session PDU, la transmission d'un second message de demande d'établissement de session PDU indiquant le débit de données maximal pour à la fois la liaison montante et la liaison descendante.
PCT/CN2020/089130 2020-05-08 2020-05-08 Auto-adaptation d'ue pour connexion de session pdu dans un réseau autonome 5g WO2021223203A1 (fr)

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