WO2022067469A1 - Procédé de programmation d'une nouvelle sélection de cellule pour un ue et un réseau mmtc à haute densité d'espace pour réduire un encombrement de canaux rach - Google Patents

Procédé de programmation d'une nouvelle sélection de cellule pour un ue et un réseau mmtc à haute densité d'espace pour réduire un encombrement de canaux rach Download PDF

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Publication number
WO2022067469A1
WO2022067469A1 PCT/CN2020/118708 CN2020118708W WO2022067469A1 WO 2022067469 A1 WO2022067469 A1 WO 2022067469A1 CN 2020118708 W CN2020118708 W CN 2020118708W WO 2022067469 A1 WO2022067469 A1 WO 2022067469A1
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Prior art keywords
cell
target cell
wireless device
processor
base station
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PCT/CN2020/118708
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English (en)
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Nan Zhang
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Qualcomm Incorporated
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Priority to PCT/CN2020/118708 priority Critical patent/WO2022067469A1/fr
Publication of WO2022067469A1 publication Critical patent/WO2022067469A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection

Definitions

  • 5G New Radio (NR) user equipment implemented cell selection/reselection methods and policies are almost the same as those implemented for prior Long Term Evolution (LTE) communications.
  • User equipment searches different bands and uses signal quality, physical layer reference signal receive power (L1-RSRP) , based criterion to find suitable cells.
  • High space density networks having high space density of base stations and/or user equipment, can cause high random access channel (RACH) congesting on some cells, such as cells with better signal quality.
  • RACH random access channel
  • a high percentage of the high space density user equipment can attempt to connect to the same cell based on the same criterion.
  • a network of such a cell can only schedule or handover user equipment to other cells during a radio resource control (RRC) connected state of the user equipment.
  • RRC radio resource control
  • Various aspects include systems and methods performed by base stations for cell selection scheduling for a network. Some aspects may include generating a cell selection message having a target cell identifier (ID) in which the cell selection message is configured to indicate to a wireless device to camp on a target cell associated with the target cell ID while the wireless device is in a radio resource control (RRC) idle or inactive state with a cell with which the wireless device is in an RRC connect state, and in which the target cell is different from the cell, and transmitting the cell selection message to the wireless device while the wireless device is in the RRC connect state with the cell.
  • ID target cell identifier
  • RRC radio resource control
  • Some aspects may further include determining whether the cell is experiencing RACH congestion, in which generating the cell selection message may include generating the cell selection message in response to determining that the cell is experiencing RACH congestion.
  • Some aspects may further include selecting the wireless device from a plurality of wireless devices in the high space density network and connected to the cell.
  • Some aspects may further include determining the target cell from a plurality of cells in the high space density network.
  • determining the target cell may include determining whether a radio access network (RAN) loading value of a first cell of the plurality of cells exceeds a cell selection threshold, and selecting the first cell is the target cell in response to the RAN loading value exceeding the cell selection threshold.
  • RAN radio access network
  • determining the target cell may include determining whether a device space distribution value of a first cell of the plurality of cells exceeds a cell selection threshold, and determining the first cell is the target cell in response to the device space distribution value exceeding the cell selection threshold.
  • the cell selection message is a non-access stratum message and includes base station security algorithm identifiers for a base station associated with the target cell.
  • Various aspects include systems and methods performed by wireless devices for cell selection scheduling for a high space density network to reduce RACH congestion. Some aspects may include receiving a cell selection message having a target cell identifier (ID) in which the cell selection message is configured to indicate to the wireless device to camp on a target cell associated with the target cell ID while the wireless device is in a radio resource control (RRC) idle or inactive state with a cell with which the wireless device is in an RRC connect state, and in which the target cell is different from the cell, and camping on the target cell while the wireless device is in an RRC idle or inactive state with the cell.
  • ID target cell identifier
  • RRC radio resource control
  • Some aspects may further include determining whether the wireless device is in an RRC idle or inactive state with the cell, in which camping on the target cell may include camping on the target cell in response to determining that the wireless device is in an RRC idle or inactive state with the cell.
  • Some aspects may further include determining whether the wireless device can camp on the target cell, in which camping on the target cell may include camping on the target cell in response to determining that the wireless device can camp on the target cell.
  • determining whether the wireless device can camp on the target cell may include determining whether a signal quality of the target cell exceeds a target cell connect threshold, and camping on the target cell may include camping on the target cell in response to determining that the signal quality of the target cell exceeds the target cell connect threshold.
  • the target cell is part of the high space density network.
  • the cell selection message is a non-access stratum message and includes base station security algorithm identifiers for a base station associated with the target cell.
  • Further aspects include a base station or a wireless device having a processor configured with processor-executable instructions to perform one or more operations of any of the methods summarized above. Further aspects include a base station or a wireless device having means for performing functions of any of the methods summarized above. Further aspects include a non-transitory processor-readable storage medium having stored thereon processor-executable instructions configured to cause a processor of a base station or a wireless device to perform operations of any of the methods summarized above.
  • FIGS. 1A and 1B are system block diagrams illustrating an example communications system suitable for implementing any of the various embodiments.
  • FIG. 3 is a component block diagram illustrating a software architecture including a radio protocol stack for the user and control planes in wireless communications suitable for implementing any of the various embodiments.
  • FIG. 4A is a component block diagram illustrating components and processing modules of a base station suitable for use with various embodiments.
  • FIG. 4B is a component block diagram illustrating components and processing modules of a wireless device suitable for use with various embodiments.
  • FIGS. 5A and 5B are process flow diagrams illustrating methods performed by a processor of a base station for cell selection scheduling for a high space density network to reduce RACH congestion according to various embodiments.
  • FIG. 6 is a process flow diagram illustrating a method performed by a processor of a wireless device for cell selection scheduling for a high space density network to reduce RACH congestion according to various embodiments.
  • FIG. 7 is a component block diagram of a base station computing device suitable for use with various embodiments.
  • FIG. 9 is a component block diagram of an IoT device suitable for use in accordance with various embodiments.
  • a network may signal to a wireless device to camp on/RACH a target cell different from the cell to which the wireless device is connected.
  • the network may signal to the connected wireless device during a radio resource control (RRC) connected state of the wireless device, and the signal may indicate to the connected wireless device to camp on/RACH the target cell during an RRC idle or inactive state of the wireless device.
  • RRC radio resource control
  • the network may signal to the connected wireless device in response to experiencing RACH congestion.
  • the wireless device may attempt to camp on/RACH the target cell during an RRC idle or inactive state of the wireless device.
  • mMTC massive machine type communication
  • wireless device is used herein to refer to any one or all of wireless router devices, wireless appliances, cellular telephones, smartphones, portable computing devices, personal or mobile multi-media players, laptop computers, tablet computers, smartbooks, ultrabooks, palmtop computers, wireless electronic mail receivers, multimedia Internet-enabled cellular telephones, medical devices and equipment, biometric sensors/devices, wearable devices including smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (for example, smart rings and smart bracelets) , entertainment devices (for example, wireless gaming controllers, music and video players, satellite radios, etc.
  • wireless-network enabled Internet of Things (IoT) devices including smart meters/sensors, industrial manufacturing equipment, large and small machinery and appliances for home or enterprise use, wireless communication elements within autonomous and semiautonomous vehicles, wireless devices affixed to or incorporated into various mobile platforms, global positioning system devices, and similar electronic devices that include a memory, wireless communication components and a programmable processor.
  • IoT Internet of Things
  • SOC system on chip
  • a single SOC may contain circuitry for digital, analog, mixed-signal, and radio-frequency functions.
  • a single SOC also may include any number of general purpose or specialized processors (digital signal processors, modem processors, video processors, etc. ) , memory blocks (such as ROM, RAM, Flash, etc. ) , and resources (such as timers, voltage regulators, oscillators, etc. ) .
  • SOCs also may include software for controlling the integrated resources and processors, as well as for controlling peripheral devices.
  • SIP system in a package
  • a SIP may include a single substrate on which multiple IC chips or semiconductor dies are stacked in a vertical configuration.
  • the SIP may include one or more multi-chip modules (MCMs) on which multiple ICs or semiconductor dies are packaged into a unifying substrate.
  • MCMs multi-chip modules
  • a SIP also may include multiple independent SOCs coupled together via high speed communication circuitry and packaged in close proximity, such as on a single motherboard or in a single wireless device. The proximity of the SOCs facilitates high speed communications and the sharing of memory and resources.
  • the terms “network, ” “system, ” “wireless network, ” “cellular network, ” and “wireless communication network” may interchangeably refer to a portion or all of a wireless network of a carrier associated with a wireless device and/or subscription on a wireless device.
  • the techniques described herein may be used for various wireless communication networks, such as Code Division Multiple Access (CDMA) , time division multiple access (TDMA) , FDMA, orthogonal FDMA (OFDMA) , single carrier FDMA (SC-FDMA) and other networks.
  • CDMA Code Division Multiple Access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal FDMA
  • SC-FDMA single carrier FDMA
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support at least one radio access technology, which may operate on one or more frequency or range of frequencies.
  • a CDMA network may implement Universal Terrestrial Radio Access (UTRA) (including Wideband Code Division Multiple Access (WCDMA) standards) , CDMA2000 (including IS-2000, IS-95 and/or IS-856 standards) , etc.
  • UTRA Universal Terrestrial Radio Access
  • CDMA2000 including IS-2000, IS-95 and/or IS-856 standards
  • a TDMA network may implement GSM Enhanced Data rates for GSM Evolution (EDGE) .
  • EDGE GSM Enhanced Data rates for GSM Evolution
  • an OFDMA network may implement Evolved UTRA (E-UTRA) (including LTE standards) , IEEE 802.11 (WiFi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash- etc.
  • E-UTRA Evolved UTRA
  • Current Fifth Generation (5G) New Radio (NR) wireless device implemented cell selection/reselection methods and policies search different bands and uses cell signal quality, physical layer reference signal receive power (L1-RSRP) , based criterion to find suitable cells.
  • High space density networks having high space density of base stations and/or wireless devices, can cause RACH congesting on some cells, such as cells with better signal quality.
  • a high percentage of the high space density wireless devices can attempt to connect to the same cell based on the same criterion.
  • a network having such a cell can only schedule or handover wireless devices to other cells during an RRC connected state of the wireless devices.
  • wireless devices will follow current 5G NR wireless device implemented cell selection/reselection methods and policies.
  • high space density wireless device RACH congesting cannot be avoided. Therefore, cell signal quality is a problematic cell selection criterion.
  • Embodiments described herein address the foregoing problems by implementing network load balancing using dynamic scheduling of wireless devices in RRC idle or inactive states to different cells.
  • the dynamic scheduling of wireless devices may be based on a current network radio access network (RAN) loading, wireless device space distributions, and/or other factors.
  • RAN network radio access network
  • Such dynamic scheduling of wireless devices may be particularly useful in high space density networks implementing mMTC in which RACH congestion on a cell may otherwise frequently occur due to the number of wireless devices attempting to connect to the cell.
  • the dynamic scheduling of wireless devices may be referred to herein as cell selection scheduling for a high space density network.
  • a network may be configured to implement cell selection scheduling in high space density networks.
  • the network implementing cell selection scheduling for a high space density network may be any number and combination of component of a core network and/or the high space density network.
  • the network may send a non-access stratum (NAS) message configured to indicate to a wireless device to camp on/RACH to target cell that is different from a cell to which the wireless device is connected.
  • the NAS message may be referred to herein as a cell selection message.
  • the network may send the cell selection message to the wireless device while the wireless device is in an RRC connected state with the cell.
  • the cell selection message may indicate to that the wireless device should camp on/RACH the target cell during an RRC idle or inactive state of the wireless device with the cell.
  • the cell selection message may contain target cell related information.
  • the cell selection message may contain a target cell identifier (ID) for the target cell.
  • ID target cell identifier
  • the network may send the cell selection message in response to determining that the cell to which the wireless device is connected is experiencing RACH congestion.
  • the network may determine the cell is experiencing RACH congestion based on any number and combination of criterion, such as RAN loading or number of connected wireless devices, transmission speed, transmission latency, dropped packets, etc.
  • the network may send the cell selection message in response to selecting the wireless device from among other wireless devices connected to the cell.
  • the network may select the wireless device to which to send the cell selection message based on any number and combination of criterion, such as wireless device space distribution, distance and/or direction of a wireless device and/or a target cell, signal quality, transmission speed, transmission latency, dropped packets, etc.
  • the network may send the cell selection message in response to selecting a target cell for the wireless device to connect to.
  • the network may select the target cell based on any number and combination of criterion, such as wireless device space distribution, distance and/or direction of a wireless device and/or a target cell, RAN loading or number of connected wireless devices, signal quality, transmission speed, transmission latency, dropped packets, etc.
  • the wireless device may receive the cell selection message during an RRC connected state with a cell. Upon transitioning to an RRC idle or inactive state, the wireless device may attempt to camp on/RACH the target cell specified by the cell selection message. In some embodiments, the wireless device may camp on/RACH the target cell in response to the target cell meeting a criterion, such as signal quality, L1-RSRP, based criterion to find suitable cells. In some embodiments, the wireless device may fallback to current 5G NR wireless device implemented cell selection/reselection methods and policies in response to the target cell failing to meet the criterion.
  • a criterion such as signal quality, L1-RSRP
  • FIGS. 1A and 1B are system block diagrams illustrating an example communications system 100, 150.
  • the communications systems 100, 150 may be a 5G New Radio (NR) network, or any other suitable network such as a Long Term Evolution (LTE) network. While FIGS. 1A and 1B illustrate 5G networks, later generation networks may include the same or similar elements. Therefore, the reference to a 5G network and 5G network elements in the following descriptions is for illustrative purposes and is not intended to be limiting.
  • NR 5G New Radio
  • LTE Long Term Evolution
  • the communications system 100 may include a heterogeneous network architecture that includes a core network 140 and a variety of wireless devices (illustrated as wireless devices 120a-120e) .
  • the communications system 100 also may include a number of base stations (illustrated as the BS 110a, the BS 110b, the BS 110c, and the BS 110d) and other network entities.
  • a base station is an entity that communicates with wireless devices, and also may be referred to as a Node B, an LTE Evolved nodeB (eNodeB or eNB) , an access point (AP) , a Radio head, a transmit receive point (TRP) , a New Radio base station (NR BS) , a 5G NodeB (NB) , a Next Generation NodeB (gNodeB or gNB) , or the like.
  • Each base station may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a base station, a base station subsystem serving this coverage area, or a combination thereof, depending on the context in which the term is used.
  • the core network 140 may be any type core network, such as an LTE core network (e.g., an EPC network) , 5G core network, etc.
  • a base station 110a-110d may provide communication coverage for a macro cell, a pico cell, a femto cell, another type of cell, or a combination thereof.
  • a macro cell may cover a relatively large geographic area (for example, several kilometers in radius) and may allow unrestricted access by wireless devices with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by wireless devices with service subscription.
  • a femto cell may cover a relatively small geographic area (for example, a home) and may allow restricted access by wireless devices having association with the femto cell (for example, wireless devices in a closed subscriber group (CSG) ) .
  • a base station for a macro cell may be referred to as a macro BS.
  • a base station for a pico cell may be referred to as a pico BS.
  • a base station for a femto cell may be referred to as a femto BS or a home BS.
  • a base station 110a may be a macro BS for a macro cell 102a
  • a base station 110b may be a pico BS for a pico cell 102b
  • a base station 110c may be a femto BS for a femto cell 102c.
  • a base station 110a-110d may support one or multiple (for example, three) cells.
  • eNB base station
  • NR BS NR BS
  • gNB gNode B
  • AP AP
  • node B node B
  • 5G NB 5G NB
  • cell may be used interchangeably herein.
  • a cell may not be stationary, and the geographic area of the cell may move according to the location of a mobile base station.
  • the base stations 110a-110d may be interconnected to one another as well as to one or more other base stations or network nodes (not illustrated) in the communications system 100 through various types of backhaul interfaces, such as a direct physical connection, a virtual network, or a combination thereof using any suitable transport network
  • the base station 110a-110d may communicate with the core network 140 over a wired or wireless communication link 126.
  • the wireless device 120a-120e may communicate with the base station 110a-110d over a wireless communication link 122.
  • the communications system 100 may be a heterogeneous network that includes base stations of different types, for example, macro base stations, pico base stations, femto base stations, relay base stations, etc. These different types of base stations may have different transmit power levels, different coverage areas, and different impacts on interference in communications system 100. For example, macro base stations may have a high transmit power level (for example, 5 to 40 Watts) whereas pico base stations, femto base stations, and relay base stations may have lower transmit power levels (for example, 0.1 to 2 Watts) .
  • macro base stations may have a high transmit power level (for example, 5 to 40 Watts) whereas pico base stations, femto base stations, and relay base stations may have lower transmit power levels (for example, 0.1 to 2 Watts) .
  • a network controller 130 may couple to a set of base stations and may provide coordination and control for these base stations.
  • the network controller 130 may communicate with the base stations via a backhaul.
  • the base stations also may communicate with one another, for example, directly or indirectly via a wireless or wireline backhaul.
  • the wireless devices 120a, 120b, 120c may be dispersed throughout communications system 100, and each wireless device may be stationary or mobile.
  • a wireless device also may be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, user equipment (UE) , etc.
  • a macro base station 110a may communicate with the communication network 140 over a wired or wireless communication link 126.
  • the wireless devices 120a, 120b, 120c may communicate with a base station 110a-110d over a wireless communication link 122.
  • Certain wireless networks utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink.
  • OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, etc.
  • K orthogonal subcarriers
  • Each subcarrier may be modulated with data.
  • modulation symbols are 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 (K) may be dependent on the system bandwidth.
  • the spacing of the subcarriers may be 15 kHz and the minimum resource allocation (called a “resource block” ) may be 12 subcarriers (or 180 kHz) . Consequently, the nominal Fast File Transfer (FFT) size may be equal to 128, 256, 512, 1024 or 2048 for system bandwidth of 1.25, 2.5, 5, 10 or 20 megahertz (MHz) , respectively.
  • the system bandwidth also may be partitioned into subbands. For example, a subband may cover 1.08 MHz (i.e., 6 resource blocks) , and there may be 1, 2, 4, 8 or 16 subbands for system bandwidth of 1.25, 2.5, 5, 10 or 20 MHz, respectively.
  • Each subframe may indicate a link direction (i.e., DL or UL) for data transmission and the link direction for each subframe may be dynamically switched.
  • Each subframe may include DL/UL data as well as DL/UL control data.
  • Beamforming may be supported and beam direction may be dynamically configured.
  • Multiple Input Multiple Output (MIMO) transmissions with precoding also may be supported.
  • MIMO configurations in the DL may support up to eight transmit antennas with multi-layer DL transmissions up to eight streams and up to two streams per wireless device. Multi-layer transmissions with up to 2 streams per wireless device may be supported.
  • NR may support a different air interface, other than an OFDM-based air interface.
  • Some wireless devices may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) wireless devices.
  • MTC and eMTC wireless devices include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a base station, another device (for example, remote device) , or some other entity.
  • a wireless computing platform may provide, for example, connectivity for or to a network (for example, a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • Some wireless devices may be considered Internet-of-Things (IoT) devices or may be implemented as NB-IoT (narrowband internet of things) devices.
  • the wireless device 120a-120e may be included inside a housing that houses components of the wireless device 120a-120e, such as processor components, memory components, similar components, or a combination thereof.
  • any number of communications systems and any number of wireless networks may be deployed in a given geographic area.
  • Each communications system and wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies.
  • RAT also may be referred to as a radio technology, an air interface, etc.
  • a frequency also may be referred to as a carrier, a frequency channel, etc.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between communications systems of different RATs.
  • 4G/LTE and/or 5G/NR RAT networks may be deployed.
  • two or more wireless devices may communicate directly using one or more sidelink channels (for example, without using a base station 110a-d as an intermediary to communicate with one another) .
  • the wireless devices 120a-e may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or similar protocol) , a mesh network, or similar networks, or combinations thereof.
  • V2X vehicle-to-everything
  • the wireless device 120a-120e may perform scheduling operations, resource selection operations, as well as other operations described elsewhere herein as being performed by the base station 110a-110d.
  • a communications system 150 may include any number and combination of the components of communications system 100 described herein with reference to FIG. 1A.
  • the communication system 150 may particularly be an example of a high space density network implemented in a manner in which any number and combination of cells 152a, 152b, 152c (e.g., cell 102a, 102b, 102c) may have overlapping range.
  • Any number and combination of wireless devices 156a, 156b e.g., wireless devices 120a, 120b, 120c
  • any number and combination of wireless devices 156a, 156b may attempt to connect to any base station 154a, 154b, 154c (e.g., base station110a, 110b, BS 110c, 110d) of an associated cell 152a, 152b, 152c in which the wireless devices 156a, 156b are located.
  • the communication system 150 may be a high space density network based on a number of wireless devices 156a, 156b and/or base station 154a, 154b, 154c implemented within a relatively small area.
  • a relatively small area may be a building, a facility, a campus, etc.
  • the number of wireless devices 156a, 156b may be at least a number of wireless devices 156a, 156b within the relatively small area that may cause RACH congestion at a base station 154a, 154b, 154c when the wireless devices 156a, 156b attempt to connect to the base station 154a, 154b, 154c.
  • a number of wireless devices 156a, 156b maybe more than one thousand, more than ten thousand, more than one hundred thousand, more than a million, etc.
  • the communications system 150 may be a high space density network configured for mMTC, in which large numbers of wireless devices 156a, 156b may attempt to connect to one of various base stations 154a, 154b, 154c.
  • the communications system 150 configured for mMTC may be implemented in a relatively small area in which a high number of wireless devices 156a, 156b per area may attempt to connect to a base station 154a, 154b, 154c.
  • the communications system 150 configured for mMTC may be implemented for an industrial, commercial, educational, research, etc. building, facility, campus, etc.
  • the communications system 150 may implement cell selection scheduling for a high space density network to reduce RACH congestion as described further herein.
  • the high space density network including any combination of a base station 154a, 154b, 154c and/or a network controller (e.g., network controller 130) of the communications system 150, may implement cell selection scheduling for the high space density network to reduce RACH congestion.
  • a core network e.g., core network 140
  • the communications system 150 may send a wireless device 156a, 156b in an RRC connected state with a cells 152a, 152b, 152c a cell selection message configured to indicate to the wireless device 156a, 156b to camp on/RACH to a target cells 152a, 152b, 152c different from the cell 152a, 152b, 152c to which the wireless device 156a, 156b is connected during an RRC idle or inactive state with the cell 152a, 152b, 152c.
  • the wireless device 156a, 156b may attempt to camp on/RACH the target cell 152a, 152b, 152c during an RRC idle or inactive state in response to receiving the cell selection message from the communications system 150.
  • FIG. 2 is a component block diagram illustrating an example computing and wireless modem system 200 suitable for implementing any of the various embodiments.
  • Various embodiments may be implemented on a number of single processor and multiprocessor computer systems, including a system-on-chip (SOC) or system in a package (SIP) .
  • SOC system-on-chip
  • SIP system in a package
  • the first or second SOCs 202, 204 may further include an input/output module (not illustrated) for communicating with resources external to the SOC, such as a clock 206 and a voltage regulator 208.
  • resources external to the SOC such as clock 206, voltage regulator 208 may be shared by two or more of the internal SOC processors/cores.
  • implementations may be implemented in a wide variety of computing systems, which may include a single processor, multiple processors, multicore processors, or any combination thereof.
  • the software architecture 300 may include a Non-Access Stratum (NAS) 302 and an Access Stratum (AS) 304.
  • the NAS 302 may include functions and protocols to support packet filtering, security management, mobility control, session management, and traffic and signaling between a SIM (s) of the wireless device (such as SIM (s) 204) and its core network 140.
  • the AS 304 may include functions and protocols that support communication between a SIM (s) (such as SIM (s) 204) and entities of supported access networks (such as a base station) .
  • the AS 304 may include at least three layers (Layer 1, Layer 2, and Layer 3) , each of which may contain various sub-layers.
  • Layer 1 (L1) of the AS 304 may be a physical layer (PHY) 306, which may oversee functions that enable transmission or reception over the air interface via a wireless transceiver (e.g., 266) .
  • PHY physical layer
  • Examples of such physical layer 306 functions may include cyclic redundancy check (CRC) attachment, coding blocks, scrambling and descrambling, modulation and demodulation, signal measurements, MIMO, etc.
  • the physical layer may include various logical channels, including the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) .
  • PDCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • Layer 3 (L3) of the AS 304 may include a radio resource control (RRC) sublayer 3.
  • RRC radio resource control
  • the software architecture 300 may include additional Layer 3 sublayers, as well as various upper layers above Layer 3.
  • the RRC sublayer 313 may provide functions including broadcasting system information, paging, and establishing and releasing an RRC signaling connection between the wireless device 320 and the base station 350.
  • the PDCP sublayer 312 may provide uplink functions including multiplexing between different radio bearers and logical channels, sequence number addition, handover data handling, integrity protection, ciphering, and header compression.
  • the PDCP sublayer 312 may provide functions that include in-sequence delivery of data packets, duplicate data packet detection, integrity validation, deciphering, and header decompression.
  • MAC sublayer 308 may provide functions including multiplexing between logical and transport channels, random access procedure, logical channel priority, and hybrid-ARQ (HARQ) operations.
  • the MAC layer functions may include channel mapping within a cell, de-multiplexing, discontinuous reception (DRX) , and HARQ operations.
  • the software architecture 300 may provide functions to transmit data through physical media
  • the software architecture 300 may further include at least one host layer 314 to provide data transfer services to various applications in the wireless device 320.
  • application-specific functions provided by the at least one host layer 314 may provide an interface between the software architecture and the general purpose processor 206.
  • the base station 402 and the wireless device 404 may include one or more processors 428, 432 coupled to electronic storage 426, 430 and a wireless transceiver (e.g., 266) .
  • the wireless transceiver 266 may be configured to receive messages sent in transmissions and pass such message to the processor (s) 428, 432 for processing.
  • the processor 428, 432 may be configured to send messages for transmission to the wireless transceiver 266 for transmission.
  • Machine-readable instructions 406 may include one or more instruction modules.
  • the instruction modules may include computer program modules.
  • the instruction modules may include one or more of a RACH congestion module 408, a target cell selection module 410, a wireless device selection module 412, a cell selection message module 414, a transmit/receive (TX/RX) module 416, or other instruction modules.
  • the RACH congestion module 408 may be configured to determine whether a cell (e.g., cell 102a-102c, 152a-152c) is experiencing RACH congestion.
  • the RACH congestion module 408 may determine whether the cell subject to the determination is experiencing RACH congestion based on any number and combination of criterion.
  • criterion may include RAN loading or a number of wireless devices 404 connect to the cell subject to the determination, transmission speed of the cell subject to the determination, transmission latency of the cell subject to the determination, dropped packets of the cell subject to the determination, etc.
  • the RACH congestion module 408 may measure the criterion for the cell subject to the determination.
  • the RACH congestion module 408 may receive the criterion for the cell subject to the determination.
  • the base station 402 making the determination may be the base station 402 associated with the cell subject to the determination.
  • the base station 402 making the determination may be part of a high space density network (e.g., communication system 150) and may be communicatively connected to another base station 402 associated with the cell subject to the determination that may also be a part of the high space density network.
  • the base station 402 making the determination may be part of a core network (e.g., core network 140) and may be communicatively connected to another base station 402 associated with the cell subject to the determination that may be part of a high space density network.
  • the target cell selection module 410 may be configured to determine a target cell (e.g., cell 102a-102c, 152a-152c) to instruct a wireless device 404 to connect to during an RRC idle or inactive state in response to determining that a cell is experiencing RACH congestion.
  • the target cell may be a different cell associated with a different base station 402 from the cell determined to be experiencing RACH congestion.
  • the target cell selection module 410 may determine the target cell based on a preconfigured target cell selection.
  • the target cell and the wireless device 404 may be associated in a data structure, such as a table, list, etc.
  • the target cell selection module 410 may determine the target cell based on a pattern algorithm.
  • the pattern algorithm may be a pseudo random pattern algorithm, a linear pattern algorithm, a nonlinear pattern algorithm, etc.
  • the target cell selection module 410 may determine the target cell based on any number and combination of criterion.
  • criterion may include wireless signal quality of the target cell, such as measured target cell receive (RX) level value (RSRP) , measured target cell quality value (RSRQ) , minimum required RX level in the target cell (dBm) , and/or minimum required quality level in the target cell (dB) , an offset applied to the target cell, an offset applied to the minimum required RX level in the target cell, an offset applied to the minimum required quality level in the target cell, maximum TX power levels of the wireless device 404 for using the target cell, a power compensation factor for the maximum TX power levels of the wireless device 404 for using the target cell, a maximum RF output power of the wireless device 404 (dBm) according to a wireless device power class, wireless device space distribution, distance and/or direction of
  • RX
  • the wireless device selection module 412 may measure the criterion for the wireless device 404 and/or the target cell. In some embodiments, the wireless device selection module 412 may receive the criterion for the wireless device 404 and/or the target cell.
  • the cell selection message module 414 may be configured to generate and to transmit (e.g., via the wireless transceiver 266) the cell selection message to the wireless device 404.
  • the cell selection message may be a NAS message having information of the target cell and configured to indicate to the wireless device 404 to camp on/RACH to the target cell during an RRC idle or inactive state.
  • Such information of the target cell may include a target cell ID and/or base station security algorithm identifiers for the selected security algorithms.
  • such information may include a set of dedicated RACH resources, an association between RACH resources and synchronization signal block (s) (SSB (s) ) , an association between RACH resources common RACH resources, system information of the target cell, etc.
  • SSB synchronization signal block
  • the cell selection message module 414 may be configured to generate and to transmit the cell selection message during an RRC connected state of the wireless device 404 with the cell subject to the determination by the RACH congestion module 408. In some embodiments, the selection message module 414 may be configured to determine the RRC state of the wireless device 404 with the cell. In some embodiments, the selection message module 414 may be configured to receive the RRC state of the wireless device 404 with the cell.
  • the transmit/receive (TX/RX) module 416 may be configured to control the transmission and reception of wireless communications with the base station 402, e.g., via the wireless transceiver 266.
  • the TX/RX module 416 may control transmission of the cell selection message to the wireless device 404 by the cell selection message module 414.
  • the TX/RX module 416 may control transmission and/or reception of the various criteria used by the RACH congestion module 408, the target cell selection module 410, and/or the wireless device selection module 412.
  • the processor (s) 432 may be configured by machine-readable instructions 434.
  • Machine-readable instructions 406 may include one or more instruction modules.
  • the instruction modules may include computer program modules.
  • the instruction modules may include one or more of a cell selection message module 436, an RRC state module 438, a camp/RACH criterion module 440, a cell connection module 442, a TX/RX module 444, or other instruction modules.
  • the cell selection message module 436 may be configured to interpret a received cell selection message.
  • the cell selection message module 436 may interpret that the wireless device 404 is instructed to connect to a target cell (e.g., cell 102a-102c, 152a-152c) during an RRC idle or inactive state of the wireless device 404 with a currently RRC connected cell.
  • the cell selection message module 436 may interpret information for connecting to the target cell. Such information may include the information included in the cell selection message by the selection message module 414.
  • the RRC state module 438 may be configured to determine an RRC state of the wireless device 404 with a cell (e.g., cell 102a-102c, 152a-152c) .
  • the RRC state module 438 may be configured to determine whether the RRC state of the wireless device 404 with the cell is an RRC idle or inactive state (i.e., determine whether the wireless device 404 is in an RRC idle or inactive state) .
  • the RRC state module 438 may determine whether the RRC state of the wireless device 404 with the cell is an RRC idle or inactive state by interpreting a stored value, such as an RRC state register value configured to indicate to the wireless device 404 a current RRC state with a cell.
  • the RRC state module 438 may determine whether the RRC state of the wireless device 404 with the cell is an RRC idle or inactive state by interpreting types of signals transmitted and/or received between the wireless device 404 and the cell.
  • the camp/RACH criterion module 440 may be configured to determine whether the wireless device 404 can camp on/RACH a cell.
  • the camp/RACH criterion module 440 may be configured to determine whether the wireless device 404 can camp on/RACH the target cell interpreted by the cell selection message module 436 from the received cell selection message module.
  • the camp/RACH criterion module 440 may be configured to determine whether the wireless device 404 can camp on/RACH any cell in response to not having a target cell specified and/or determining that the wireless device cannot camp on/RACH the target cell.
  • the camp/RACH criterion module 440 may determine whether the wireless device 404 can camp on/RACH the target cell based on any number and combination of criterion.
  • Such criterion may include signal quality of the target cell.
  • the criterion for determining whether the wireless device 404 can camp on/RACH the target cell may be the same as the criterion for determining whether the wireless device 404 can camp on/RACH another cell.
  • the criterion may be the same in type of criterion and/or measure of the criterion.
  • the criterion for determining whether the wireless device 404 can camp on/RACH the target cell may be different as the criterion for determining whether the wireless device 404 can camp on/RACH another cell.
  • the criterion may be different in type of criterion and/or measure of the criterion.
  • the criterion for the determining whether the wireless device 404 can camp on/RACH any cell may be based on signal quality of the cell.
  • the criterion for the determining whether the wireless device 404 can camp on/RACH the target cell may be a lower measure of signal quality than the criterion for the determining whether the wireless device 404 can camp on/RACH another cell.
  • the camp/RACH criterion module 440 may measure the criterion for the target cell.
  • the camp/RACH criterion module 440 may receive the criterion for the target cell.
  • the cell connection module 442 may be configured to implement procedures for connecting to a cell.
  • the cell connection module 442 may implement procedures for connecting to the target cell in response to the camp/RACH criterion module 440 determining that the wireless device 404 can connect to the target cell.
  • the cell connection module 442 may implement procedures for connecting to another cell in response to not having a target cell specified.
  • the cell connection module 442 may implement procedures for connecting to another cell in response to the camp/RACH criterion module 440 determining that the wireless device 404 cannot camp on/RACH the target cell and/or determining that the wireless device can camp on/RACH another cell.
  • the base station 402 and the wireless device 404 may be operatively linked via one or more electronic communication links (e.g., wireless communication link 122, 124, 126) . It will be appreciated that this is not intended to be limiting, and that the scope of this disclosure includes embodiments in which the base station 402 and the wireless device 404 may be operatively linked via some other communication medium.
  • the electronic storage 426, 430 may include non-transitory storage media that electronically stores information.
  • the electronic storage media of electronic storage 426, 430 may include one or both of system storage that is provided integrally (i.e., substantially non-removable) with the base station 402 and the wireless device 404 and/or removable storage that is removably connectable to the base station 402 and the wireless device 404 via, for example, a port (e.g., a universal serial bus (USB) port, a firewire port, etc. ) or a drive (e.g., a disk drive, etc. ) .
  • Electronic storage 426, 430 may include one or more of optically readable storage media (e.g., optical disks, etc.
  • Electronic storage 426, 430 may include one or more virtual storage resources (e.g., cloud storage, a virtual private network, and/or other virtual storage resources) .
  • Electronic storage 426, 430 may store software algorithms, information determined by processor (s) 428, 432, information received from the base station 402 and the wireless device 404, or other information that enables the base station 402 and the wireless device 404 to function as described herein.
  • Processor (s) 428, 432 may be configured to provide information processing capabilities in the base station 402 and the wireless device 404.
  • the processor (s) 428, 432 may include one or more of a digital processor, an analog processor, a digital circuit designed to process information, an analog circuit designed to process information, a state machine, and/or other mechanisms for electronically processing information.
  • the processor (s) 428, 432 are illustrated as single entities, this is for illustrative purposes only.
  • the processor (s) 428, 432 may include a plurality of processing units and/or processor cores. The processing units may be physically located within the same device, or processor (s) 428, 432 may represent processing functionality of a plurality of devices operating in coordination.
  • the processor (s) 428, 432 may be configured to execute modules 408–414 and modules 436–446 and/or other modules by software; hardware; firmware; some combination of software, hardware, and/or firmware; and/or other mechanisms for configuring processing capabilities on processor (s) 428, 432.
  • the term “module” may refer to any component or set of components that perform the functionality attributed to the module. This may include one or more physical processors during execution of processor readable instructions, the processor readable instructions, circuitry, hardware, storage media, or any other components.
  • modules 408–414 and modules 436–446 may provide more or less functionality than is described.
  • one or more of the modules 408–414 and modules 436–446 may be eliminated, and some or all of its functionality may be provided by other modules 408–414 and modules 436–446.
  • the processor (s) 428, 432 may be configured to execute one or more additional modules that may perform some or all of the functionality attributed below to one of the modules 408–414 and modules 436–446.
  • FIGs. 5A and 5B are process flow diagrams illustrating methods 500a, 500b performed by a processor of a base station device for cell selection scheduling for a high space density network to reduce RACH congestion according to various embodiments.
  • the operations of the methods 500a, 500b may be performed by a processor (e.g., processor 210, 212, 214, 216, 218, 252, 260, 428) of a base station device (e.g., base station 110a-110d, 154a-154c, 200, 350, 402) .
  • the processor may determine whether a cell (e.g., cell 102a-102c, 152a-152c) is experiencing RACH congestion.
  • the processor may determine whether a cell of a high space density network (e.g., communication system 150) subject to the determination is experiencing RACH congestion based on any number and combination of criterion.
  • criterion may include RAN loading or a number of wireless devices (e.g., wireless device 120a-120e, 156a, 156b, 200, 320, 404) connected to the cell subject to the determination, transmission speed of the cell subject to the determination, transmission latency of the cell subject to the determination, dropped packets of the cell subject to the determination, etc.
  • the processor may measure the criterion for the cell subject to the determination. In some embodiments, the processor may receive the criterion for the cell subject to the determination. In some embodiments, the processor may measure and/or receive the criterion via a wireless transceiver (e.g., wireless transceiver 266) .
  • the processor may compare a measurement of the criterion to a RACH congestion threshold to determine whether the cell is experiencing RACH congestion. For example, the measurement of the criterion exceeding the RACH congestion threshold may indicate to the processor that the cell is experiencing RACH congestion.
  • the processor executing a RACH congestion module (e.g., RACH congestion module 408) may determine whether the cell is experiencing RACH congestion in determination block 502.
  • the processor may select a wireless device to which to send a cell selection message in block 504.
  • the cell selection message may be configured to indicate to the wireless device to camp on/RACH to a target cell (e.g., cell 102a-102c, 152a-152c) during an RRC idle or inactive state with the cell determined to be experiencing RACH congestion.
  • the target cell may be a different cell of the high space density network associated with a different base station from the cell determined to be experiencing RACH congestion.
  • the wireless device to which to send a cell selection message may be a wireless device in the high space density network determined from a plurality of wireless devices in the high space density network that are connected to the cell.
  • the processor may select the wireless device to which to send the cell selection message based on any number and combination of criterion.
  • criterion may include wireless device space distribution, distance and/or direction of the wireless device and/or the target cell, signal quality of the wireless device, transmission speed of the wireless device, transmission latency of the wireless device, dropped packets of the wireless device, etc.
  • the processor may measure the criterion for the wireless device and/or the target cell.
  • the wireless device processor may receive the criterion for the wireless device and/or the target cell.
  • the processor may measure and/or receive the criterion via the wireless transceiver.
  • the processor may compare a measurement of the criterion to a wireless device selection threshold to determine whether to send the wireless device a cell selection message. For example, the measurement of the criterion exceeding the wireless device selection threshold may indicate to the processor to send the wireless device a cell selection message.
  • the processor executing a wireless device selection module e.g., wireless device selection module 412 may select the wireless device to which to send a cell selection message in block 504.
  • the processor may determine a target cell to instruct the wireless device to connect to during an RRC idle or inactive state.
  • the target cell may be a cell in the high space density network determined from a plurality of cells in the high space density network.
  • the processor may determine the target cell based on a preconfigured target cell selection.
  • the target cell and the wireless device may be associated in a data structure, such as a table, list, etc.
  • the processor may determine the target cell based on a pattern algorithm.
  • the pattern algorithm may be a pseudo random pattern algorithm, a linear pattern algorithm, a nonlinear pattern algorithm, etc.
  • the processor may determine the target cell based on any number and combination of criterion.
  • Such criterion may include wireless signal quality of the target cell, such as measured target cell RX level value (RSRP) , measured target cell quality value (RSRQ) , minimum required RX level in the target cell (dBm) , and/or minimum required quality level in the target cell (dB) , an offset applied to the target cell, an offset applied to the minimum required RX level in the target cell, an offset applied to the minimum required quality level in the target cell, maximum TX power levels of the wireless device for using the target cell, a power compensation factor for the maximum TX power levels of the wireless device for using the target cell, a maximum RF output power of the wireless device (dBm) according to a wireless device power class, device space distribution, distance and/or direction of the wireless device and/or the target cell, RAN loading or a number of wireless devices connected to the target cell, transmission speed of the target cell, transmission latency of the target cell, dropped packets of the target cell, etc.
  • RSRP measured target cell RX level value
  • RSRQ measured target
  • the processor may measure the criterion for the target cell and/or the wireless device. In some embodiments, the processor may receive the criterion for the target cell and/or the wireless device. In some embodiments, the processor may measure and/or receive the criterion via the wireless transceiver.
  • the processor may compare a measurement of the criterion to a cell selection threshold to determine a cell as the target cell to instruct the wireless device to connect to during an RRC idle or inactive state. For example, the measurement of the criterion exceeding the cell selection threshold may indicate to the processor that the cell is a suitable target cell.
  • the processor executing a target cell selection module e.g., target cell selection module 410) may determine the target cell to instruct the wireless device to connect to during an RRC idle or inactive state in block 506.
  • the criterion may include measurements of various inputs to a cell selection RX level value (dB) and a cell selection quality value (dB) .
  • the cell selection threshold may include threshold values for the cell selection RX level value and the cell selection quality value.
  • the cell selection RX level value (Srxlev) may be a function of a measured target cell RX level value (Qrxlevmeas) , a minimum required RX level in the target cell (Qrxlevmin) , an offset applied to the minimum required RX level in the target cell (Qrxlevminoffset) , a power compensation factor for the maximum TX power levels of the wireless device for using the target cell (Pcompensation) , and an offset applied to the target cell (Qoffsettemp) :
  • the cell selection quality value may be a function of a measured target cell quality value (Qqualmeas) , a minimum required quality level in the target cell (Qqualmin) , an offset applied to the minimum required quality level in the target cell (Qqualminoffset) , and an offset applied to the target cell (Qoffsettemp) :
  • the processor may generate a cell selection message.
  • the cell selection message may be a NAS message having information of the target cell and configured to indicate to the wireless device to camp on/RACH to the target cell during an RRC idle or inactive state.
  • Such information of the cell device may include a target cell ID and/or base station security algorithm identifiers for the selected security algorithms.
  • such information may include a set of dedicated RACH resources, an association between RACH resources and SSB (s) , an association between RACH resources common RACH resources, system information of the target cell, etc.
  • the processor executing a cell selection message module (e.g., cell selection message module 414) may generate the cell selection message in block 508.
  • the processor may transmit the cell selection message to the wireless device.
  • the processor may transmit the cell selection message during an RRC connected state of the wireless device with the cell subject to RACH congestion as determined in block 502.
  • the processor may be configured to determine the RRC state of the wireless device with the cell.
  • the processor may be configured to receive the RRC state of the wireless device with the cell.
  • the processor may determine and/or receive the RRC state of the wireless device with the cell via the wireless transceiver.
  • the processor executing the cell selection message module and the wireless transceiver may transmit the cell selection message in block 510.
  • the base station processor may identify a target cell to which selected wireless devices will be directed to connect, and then selected wireless devices that will be sent the cell selection message.
  • the processor implementing the method 500a, 500b may be of a network controller (e.g., network controller 130) that may be communicatively connected to a base station associated with the cell subject to the determination and that may be part of a high space density network.
  • a network controller e.g., network controller 130
  • FIG. 6 is a process flow diagram illustrating a method 600 performed by a processor of a wireless device for enhancing coverage for cell selection scheduling for a high space density network to reduce RACH congestion according to various embodiments.
  • the operations of the method 600 may be performed by a processor (e.g., processor 210, 212, 214, 216, 218, 252, 260, 432) of a wireless device (e.g., wireless device 120a-120e, 156a, 156b, 200, 320, 404) .
  • a processor e.g., processor 210, 212, 214, 216, 218, 252, 260, 432
  • a wireless device e.g., wireless device 120a-120e, 156a, 156b, 200, 320, 404 .
  • the processor may receive a cell selection message.
  • the cell selection message may be a NAS message having information of a target cell (e.g., cells 102a-102c, 152a-152c) and configured to indicate to the wireless device to camp on/RACH to the target cell during an RRC idle or inactive state.
  • the processor may receive the cell selection message from a base station (e.g., base station 110a-110d, 154a-154c, 200, 350, 402) during an RRC connected state of the wireless device with a cell (e.g., cells 102a-102c, 152a-152c) associated with the base station.
  • the processor executing a cell selection message module (e.g., cell selection message module 436) and a wireless transceiver (e.g., wireless transceiver 266) may receive the cell selection message in block 602.
  • the processor may interpret the cell selection message.
  • the processor may interpret that the wireless device is instructed to connect to the target cell during an RRC idle or inactive state of the wireless device with the currently RRC connected cell.
  • the processor may interpret information for connecting to the target cell.
  • Such information may include a target cell ID and/or base station security algorithm identifiers for the selected security algorithms.
  • such information may include a set of dedicated RACH resources, an association between RACH resources and SSB (s) , an association between RACH resources common RACH resources, system information of the target cell, etc.
  • the processor executing a cell selection message module may interpret the cell selection message in block 604.
  • the processor may determine whether the wireless device is in an RRC idle or inactive state.
  • the processor may be configured to determine whether the RRC state of the wireless device with the cell is an RRC idle or inactive state. In some embodiments, the processor may determine whether the RRC state of the wireless device with the cell is an RRC idle or inactive state by interpreting a stored value, such as an RRC state register value configured to indicate to the wireless device a current RRC state with a cell. In some embodiments, the processor may determine whether the RRC state of the wireless device with the cell is an RRC idle or inactive state by interpreting types of signals transmitted and/or received between the wireless device and the cell. In some embodiments, the processor executing an RRC state module (e.g., RRC state module 438) may determine whether the wireless device is in an RRC idle or inactive state in block 606.
  • an RRC state module e.g., RRC state module 438, may determine whether the wireless device is in an RRC idle or inactive state in block 606.
  • the processor may determine whether the wireless device can camp on/RACH the target cell in determination block 608.
  • the processor may determine whether the wireless device can camp on/RACH the target cell based on any number and combination of criterion.
  • Such criterion may include signal quality of the target cell.
  • the criterion for determining whether the wireless device can camp on/RACH the target cell may be the same as the criterion for determining whether the wireless device can camp on/RACH another cell.
  • the criterion may be the same in type of criterion and/or measure of the criterion.
  • the criterion for determining whether the wireless device can camp on/RACH the target cell may be different from the criterion for determining whether the wireless device can camp on/RACH another cell.
  • the criterion may be different in type of criterion and/or measure of the criterion.
  • the criterion for the determining whether the wireless device can camp on/RACH any cell may be based on signal quality of the cell.
  • the criterion for the determining whether the wireless device 404 can camp on/RACH the target cell may be a lower measure of signal quality than the criterion for the determining whether the wireless device can camp on/RACH another cell.
  • the processing device may implement traditional cell selection in block 612.
  • the processor executing a cell connection module and a wireless transceiver may implement traditional cell selection in block 612.
  • FIG. 7 is a component block diagram of a base station computing device suitable for use with various embodiments.
  • Such base station computing devices may include at least the components illustrated in FIG. 7.
  • the base station computing device 700 may typically include a processor 701 coupled to volatile memory 702 and a large capacity nonvolatile memory, such as a disk drive 708.
  • the base station computing device 700 also may include a peripheral memory access device 706 such as a floppy disc drive, compact disc (CD) or digital video disc (DVD) drive coupled to the processor 701.
  • a peripheral memory access device 706 such as a floppy disc drive, compact disc (CD) or digital video disc (DVD) drive coupled to the processor 701.
  • FIG. 8 is a component block diagram of a wireless device 800 suitable for use with various embodiments.
  • various embodiments may be implemented on a variety of wireless devices 800 (e.g., wireless device 120a-120e, 156a, 156b, 200, 320, 404) , an example of which is illustrated in FIG. 8 in the form of a smartphone.
  • the wireless device 800 may include a first SOC 202 (for example, a SOC-CPU) coupled to a second SOC 204 (for example, a 5G capable SOC) .
  • the first and second SOCs 202, 204 may be coupled to internal memory 816, a display 812, and to a speaker 814.
  • the wireless device 800 may include an antenna 804 for sending and receiving electromagnetic radiation that may be connected to a wireless transceiver 266 coupled to one or more processors in the first and/or second SOCs 202, 204.
  • Wireless device 800 may include menu selection buttons or rocker switches 820 for receiving user inputs.
  • the wireless device 800 wireless device 800 may include a sound encoding/decoding (CODEC) circuit 810, which digitizes sound received from a microphone into data packets suitable for wireless transmission and decodes received sound data packets to generate analog signals that are provided to the speaker to generate sound.
  • CODEC sound encoding/decoding
  • One or more of the processors in the first and second SOCs 202, 204, wireless transceiver 266 and CODEC 810 may include a digital signal processor (DSP) circuit (not shown separately) .
  • DSP digital signal processor
  • an IoT device 900 may include a first SOC 202 (e.g., a SOC-CPU) coupled to a second SOC 204 (e.g., a 5G capable SOC) and a sensor 905.
  • a first SOC 202 e.g., a SOC-CPU
  • a second SOC 204 e.g., a 5G capable SOC
  • the senor may be any number and combination of a temperature sensor, a light sensor, a vibration sensor, a sound sensor, a particulate sensor, a fluid sensor, a gas sensor, a pH sensor, a humidity sensor, an ion sensor, a radiation sensor, a pressure sensor, a flow sensor, a speed sensor, a position sensor, a level sensor, an electrical current sensor, a voltage sensor, an electrical resistance sensor, an impedance sensor, an inductance sensor, a radar sensor, a LiDAR sensor, etc.
  • the first and second SOCs 202, 204 may be coupled to internal memory 906.
  • the IoT device 900 may include or be coupled to an antenna 904 for sending and receiving wireless signals from a cellular telephone transceiver 908 or within the second SOC 204.
  • the antenna 904 and transceiver 908 and/or second SOC 204 may support communications using various RATs, including Cat. -M1, NB-IoT, CIoT, GSM, and/or VoLTE.
  • An IoT device 900 may also include a sound encoding/decoding (CODEC) circuit 910, which digitizes sound received from a microphone into data packets suitable for wireless transmission and decodes received sound data packets to generate analog signals that are provided to a speaker to generate sound in support of voice or VoLTE calls.
  • CODEC sound encoding/decoding
  • one or more of the processors in the first and second SOCs 202, 204, wireless transceiver 908 and CODEC 910 may include a digital signal processor (DSP) circuit (not shown separately) .
  • DSP digital signal processor
  • a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, or a computer.
  • a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, or a computer.
  • an application running on a wireless device and the wireless device may be referred to as a component.
  • One or more components may reside within a process or thread of execution and a component may be localized on one processor or core or distributed between two or more processors or cores. In addition, these components may execute from various non-transitory computer readable media having various instructions or data structures stored thereon. Components may communicate by way of local or remote processes, function or procedure calls, electronic signals, data packets, memory read/writes, and other known network, computer, processor, or process related communication methodologies.
  • Such services and standards include, e.g., third generation partnership project (3GPP) , long term evolution (LTE) systems, third generation wireless mobile communication technology (3G) , fourth generation wireless mobile communication technology (4G) , fifth generation wireless mobile communication technology (5G) as well as later generation 3GPP technology, global system for mobile communications (GSM) , universal mobile telecommunications system (UMTS) , 3GSM, general packet radio service (GPRS) , code division multiple access (CDMA) systems (e.g., cdmaOne, CDMA1020TM) , enhanced data rates for GSM evolution (EDGE) , advanced mobile phone system (AMPS) , digital AMPS (IS-136/TDMA) , evolution-data optimized (EV-DO) , digital enhanced cordless telecommunications (DECT) , Worldwide Interoperability for Microwave Access (WiMAX) , wireless
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor, but, in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of receiver smart objects, 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. Alternatively, some operations or methods may be performed by circuitry that is specific to a given function.
  • the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored as one or more instructions or code on a non-transitory computer-readable storage medium or non-transitory processor-readable storage medium.
  • the operations of a method or algorithm disclosed herein may be embodied in a processor-executable software module or processor-executable instructions, which may reside on a non-transitory computer-readable or processor-readable storage medium.
  • Non-transitory computer-readable or processor-readable storage media may be any storage media that may be accessed by a computer or a processor.
  • non-transitory computer-readable or processor-readable storage media may include RAM, ROM, EEPROM, FLASH memory, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage smart objects, or any other medium that may be used to store desired program code in the form of instructions or data structures and that may be accessed by a computer.
  • Disk and disc includes compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of non-transitory computer-readable and processor-readable media.
  • the operations of a method or algorithm may reside as one or any combination or set of codes and/or instructions on a non-transitory processor-readable storage medium and/or computer-readable storage medium, which may be incorporated into a computer program product.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Dans des modes de réalisation, la présente invention concerne des systèmes et des procédés de programmation d'une sélection de cellule pour un réseau. Certains modes de réalisation peuvent comprendre un message de sélection de cellule ayant un ID de cellule cible, le message de sélection de cellule étant configuré pour indiquer à un dispositif sans fil de se mettre en attente sur une une cellule cible associée à l'ID de cellule cible tandis que le dispositif sans fil est dans un état repos ou inactif de RRC avec une cellule, et la cellule cible étant différente de la cellule. Dans certains modes de réalisation, un dispositif de station de base peut générer le message de sélection de cellule et transmettre le message de sélection de cellule au dispositif sans fil tandis que le dispositif sans fil est dans l'état connecté de RRC avec la cellule. Dans certains modes de réalisation, un dispositif sans fil peut recevoir le message de sélection de cellule et se mettre en attente sur la cellule cible tandis que le dispositif sans fil est dans un état repos ou inactif de RRC avec la cellule.
PCT/CN2020/118708 2020-09-29 2020-09-29 Procédé de programmation d'une nouvelle sélection de cellule pour un ue et un réseau mmtc à haute densité d'espace pour réduire un encombrement de canaux rach WO2022067469A1 (fr)

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PCT/CN2020/118708 WO2022067469A1 (fr) 2020-09-29 2020-09-29 Procédé de programmation d'une nouvelle sélection de cellule pour un ue et un réseau mmtc à haute densité d'espace pour réduire un encombrement de canaux rach

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080280567A1 (en) * 2003-07-11 2008-11-13 Interdigital Technology Corporation Wireless transmit receive unit having a transition state for transitioning from monitoring to duplex connected states and method
CN102316418A (zh) * 2010-07-02 2012-01-11 中兴通讯股份有限公司 一种多媒体广播多播业务连续性的实现方法和装置
WO2013025235A1 (fr) * 2011-08-15 2013-02-21 Research In Motion Limited Continuité de service pour un service de diffusion/multidiffusion multimédia (mbms) destiné à un équipement utilisateur (ue) en mode connecté rrc
CN104025655A (zh) * 2011-11-04 2014-09-03 Lg电子株式会社 在无线通信系统中通过应用最高优先级来进行小区重选的方法及其装置
CN105637779A (zh) * 2013-09-27 2016-06-01 联发科技股份有限公司 Fdd-tdd联合运作网络中的ue增强

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080280567A1 (en) * 2003-07-11 2008-11-13 Interdigital Technology Corporation Wireless transmit receive unit having a transition state for transitioning from monitoring to duplex connected states and method
CN102316418A (zh) * 2010-07-02 2012-01-11 中兴通讯股份有限公司 一种多媒体广播多播业务连续性的实现方法和装置
WO2013025235A1 (fr) * 2011-08-15 2013-02-21 Research In Motion Limited Continuité de service pour un service de diffusion/multidiffusion multimédia (mbms) destiné à un équipement utilisateur (ue) en mode connecté rrc
CN104025655A (zh) * 2011-11-04 2014-09-03 Lg电子株式会社 在无线通信系统中通过应用最高优先级来进行小区重选的方法及其装置
CN105637779A (zh) * 2013-09-27 2016-06-01 联发科技股份有限公司 Fdd-tdd联合运作网络中的ue增强

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
RESEARCH IN MOTION UK LIMITED: "Further assistance for MBMS service continuity", 3GPP DRAFT; R2-124480-FURTHER-ASSISTANCE-MBMS-SERVICE-CONTINUITY, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Bratislava, Slovakia; 20121008 - 20121012, 28 September 2012 (2012-09-28), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP050666333 *
VIVO: "Consideration on IDLE Measurement across Cells", 3GPP DRAFT; R2-1802007_CONSIDERATION ON IDLE MEASUREMENT ACROSS CELLS, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Athens, Greece; 20180226 - 20180302, 14 February 2018 (2018-02-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051399082 *

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