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WO2016108740A1 - Informations de mobilité comprenant un indicateur de vitesse - Google Patents

Informations de mobilité comprenant un indicateur de vitesse Download PDF

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Publication number
WO2016108740A1
WO2016108740A1 PCT/SE2014/051579 SE2014051579W WO2016108740A1 WO 2016108740 A1 WO2016108740 A1 WO 2016108740A1 SE 2014051579 W SE2014051579 W SE 2014051579W WO 2016108740 A1 WO2016108740 A1 WO 2016108740A1
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WO
WIPO (PCT)
Prior art keywords
network node
radio network
wireless device
speed
target radio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE2014/051579
Other languages
English (en)
Inventor
Bo Ehrenholm
Parisa PAKNIAT
Håkan AXELSSON
Diana Andrei
Stefan Johansson
Samuel Axelsson
Fredrik Gunnarsson
Olof Granberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to PCT/SE2014/051579 priority Critical patent/WO2016108740A1/fr
Publication of WO2016108740A1 publication Critical patent/WO2016108740A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/324—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off

Definitions

  • a communication network e.g. telecommunication network, for providing mobility information associated with a wireless device to a target radio network node being a potentially new radio network node for serving the wireless device, and for managing mobility of the wireless device based on the mobility information.
  • Communication devices such as wireless devices may also be known as e.g. user equipments (UEs), mobile terminals, wireless terminals and/or mobile stations.
  • a wireless device is enabled to communicate wirelessly in a cellular communication network, wireless communication system, or radio communication system, sometimes also referred to as a cellular radio system, cellular network or cellular communication system.
  • the communication may be performed e.g. between two wireless devices, between a wireless device and a regular telephone and/or between a wireless device and a server via a Radio Access Network (RAN) and possibly one or more core networks, comprised within the cellular communication network.
  • the wireless device may further be referred to as a mobile telephone, cellular telephone, laptop, Personal Digital Assistant (PDA), tablet computer, just to mention some further examples.
  • the wireless device may be, for example, portable, pocket-storable, hand-held, computer-comprised, or vehicle-mounted mobile device, enabled to communicate voice and/or data, via the RAN, with another entity, such as another wireless device or a server.
  • the cellular communication network covers a geographical area which is divided into cell areas, wherein each cell area is served by at least one base station, or Base Station (BS), e.g. a Radio Base Station (RBS), which sometimes may be referred to as e.g. "eNB”, “eNodeB”, “NodeB”, “B node”, or BTS (Base Transceiver Station), depending on the technology and terminology used.
  • BS Base Station
  • RBS Radio Base Station
  • eNB Radio Base Station
  • eNodeB eNodeB
  • NodeB Node
  • BTS Base Transceiver Station
  • the base stations may be of different classes such as e.g. macro eNodeB, home eNodeB or pico base station, based on transmission power and thereby also cell size.
  • a cell is the geographical area where radio coverage is provided by the base station at a base station site. Cells may overlap so that several cells cover the same geographical area.
  • GSM Global System for Mobile Communication
  • base stations which may be referred to as eNodeBs or eNBs, may be directly connected to other base stations and may be directly connected to one or more core networks.
  • 3GPP 3rd Generation Partnership Project
  • eNodeBs Long Term Evolution
  • eNBs may be directly connected to other base stations and may be directly connected to one or more core networks.
  • UMTS is a third generation mobile communication system, which may be referred to as 3rd generation or 3G, and which evolved from the GSM, and provides improved mobile communication services based on Wideband Code Division Multiple Access (WCDMA) access technology.
  • UMTS Terrestrial Radio Access Network (UTRAN) is essentially a radio access network using wideband code division multiple access for wireless devices.
  • High Speed Packet Access (HSPA) is an amalgamation of two mobile telephony protocols, High Speed Downlink Packet Access (HSDPA) and High Speed Uplink Packet Access (HSUPA), defined by 3GPP, that extends and improves the performance of existing 3rd generation mobile telecommunication networks utilizing the WCDMA.
  • HSPA High Speed Packet Access
  • HSDPA High Speed Downlink Packet Access
  • HSUPA High Speed Uplink Packet Access
  • Such networks may be named WCDMA/HSPA.
  • the expression downlink (DL) is used for the transmission path from the base station to the wireless device.
  • the expression uplink (UL) is used for the transmission path in the opposite direction i.e. from the wireless device to the base station.
  • the serving base station may be named serving eNB and the target base station may be named target eNB.
  • a wireless device which is named UE in LTE and in the following, is accessing the target eNB at an external eNB handover, information about the UE, its services and a present Radio Resource Control (RRC) connection are sent to the target eNB to make it possible for the target eNB to pre- allocate appropriate resources for a new radio link to the UE.
  • RRC Radio Resource Control
  • MME Management Entity
  • Figure 1 shows an example of a signalling flow regarding handover in LTE.
  • the signalling takes part between a serving eNB and a target eNB via a MME, i.e. over the so called S1 interface.
  • More detailed information may be found in e.g. 3GPP TS 36.413 "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)", version 12.3.0, see in particular chapter 8.4.1 “Handover Preparation”, chapter 8.4.2 “Handover Resource Allocation”, chapter 9.1.5.1 “HANDOVER REQUIRED”, and chapter 9.1.5.4 "HANDOVER REQUEST”.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • S1AP S1 Application Protocol
  • the serving eNB sends, see Msg1) in the figure, handover information in a message named HANDOVER REQUIRED to the MME which sends, see Msg2), forward the handover information to the target eNB in a message named HANDOVER REQUEST.
  • the target enB processes the handover information that e.g. comprises information about the UE, such as UE radio capabilities, and information about the radio connection. This makes it possible for the target eNB to pre-allocate appropriate resources for the new radio link.
  • Information about the pre- allocated resources that are relevant for the UE are then sent to the UE via the MME and serving eNB, see Msg3) and Msg4).
  • the information is sent to the MME in a message named HANDOVER REQUEST ACKNOWLEDGE and from the MME to the serving eNB in a message named HANDOVER COMMAND.
  • signalling may alternatively take part directly between eNBs over the so called X2 interface.
  • X2 interface For example, 3GPP TS 36.423 "Evolved Universal Terrestrial Radio Access Network (E- UTRAN); X2 Application Protocol (X2AP)", version 12.3.0, see in particular chapter 8.2.1 “Handover Preparation", and chapter 9.1.1.1 “HANDOVER REQUEST”.
  • GPRS Global System for Mobile Communications
  • BSS Base Station System
  • BSSGPRS protocol BSS GPRS protocol
  • the object is achieved by a method, performed by a serving radio network node, for providing mobility information associated with a wireless device to a target radio network node.
  • the target radio network node is a potentially new radio network node for serving the wireless device.
  • the serving radio network node is comprised in a first wireless communication network.
  • the target radio network node is also comprised in said first wireless communication network or in another, second wireless communication network.
  • the serving radio network node obtains speed information about how fast the wireless device moves.
  • the serving radio network node then sends, to the target radio network node, the mobility information comprising a speed indicator.
  • the speed indicator is based on the obtained speed information and indicates speed of the wireless device.
  • the object is achieved by a computer program comprising instructions that when executed by a processing circuit causes the serving radio network node to perform the method according to the first aspect.
  • the object is achieved by a data carrier comprising the computer program according to the third aspect.
  • the object is achieved by a method, performed by a target radio network node, for managing mobility of a wireless device being served by a serving radio network node.
  • the target radio network node being a potentially new radio network node for serving the wireless device.
  • the serving radio network node is comprised in a first wireless communication network.
  • the target radio network node is comprised in said first wireless communication network or another, second wireless communication network.
  • the target radio network node receives, from the serving radio network node, mobility information associated with the wireless device.
  • the mobility information comprises a speed indicator indicating speed of the wireless device.
  • the target radio network node then manages mobility of the wireless device based on the received speed indicator.
  • the object is achieved by a computer program comprising instructions that when executed by a processing circuit causes the target radio network node to perform the method according to the fourth aspect.
  • the object is achieved by a data carrier comprising the computer program according to the fifth aspect.
  • the object is achieved by a serving radio network node for providing mobility information associated with a wireless device to a target radio network node.
  • the target radio network node is a potentially new radio network node for serving the wireless device.
  • the serving radio network node is configured to be comprised in a first wireless communication network.
  • the target radio network node is also configured to be comprised in said first wireless communication network and/or in another, second wireless communication network.
  • the serving radio network node is further configured to obtain speed information about how fast the wireless device moves.
  • the serving radio network node is also configured to send, to the target radio network node, the mobility information comprising a speed indicator. The speed indicator being based on the obtained speed information and indicates speed of the wireless device.
  • the object is achieved by a target radio network node for managing mobility of a wireless device being served by a serving radio network node.
  • the target radio network node being a potentially new radio network node for serving the wireless device.
  • the serving radio network node is configured to be comprised in a first wireless communication network.
  • the target radio network node is also configured to be comprised in said first wireless communication network and/or in another, second wireless communication network.
  • the target radio network node is further configured to receive, from the serving radio network node, mobility information associated with the wireless device.
  • the mobility information comprises a speed indicator indicating speed of the wireless device.
  • the target radio network node is also configured to manage mobility of the wireless device based on the received speed indicator.
  • Embodiments herein enable the target radio network node to e.g. get information about the speed of the wireless device and e.g. be informed if the wireless device is a "high speed" wireless device, already at the first time when resources are to be allocated in the target radio network node. It is thereby possible to allocate better, or even the right, resources, apply service specific functions and set better, or even the right, radio network parameters directly, or at least much faster, than else would be possible. This reduces problems that else may occur at e.g. handover, in particular for wireless devices that move at such high speed that conventional methods for handover may cause problems or be not be as efficient as would be desirable.
  • embodiments herein enable use of specific parameter settings based on the speed of the wireless device already at the beginning of setting up a new radio link, which increase the performance of service(s) provided to the wireless device, enables reduction of drop rates during handover and enable improved KPIs.
  • Figure 1 is a combined signaling diagram and flowchart showing messages for handover in LTE.
  • Figure 2 is a block diagram schematically depicting an example of a wireless communication network in which embodiments herein may be implemented.
  • Figure 3 is a combined signaling diagram and flowchart for describing embodiments herein.
  • Figure 4 is a flowchart schematically illustrating embodiments of a method performed in a serving radio network node.
  • Figure 7 is a functional block diagram for illustrating embodiments of the target radio network node.
  • Figures 8a-c are schematic drawings illustrating embodiments relating to computer program products and computer programs to cause the serving radio network node and the target radio network node to perform method actions.
  • DRX Discontinuous Reception
  • KPIs Key Performance Indicators
  • Embodiments herein relate to provision of such information, i.e. ways of providing information about speed status of a wireless device to a target radio network node so that the target network node is enabled to utilize this information and thereby e.g. earlier during handover, or during any other mobility management, be able to apply specific handling, in particular for wireless devices that move at such high speed that they benefit from this.
  • FIG. 2 depicts an example of a first wireless communication network 100.
  • the first wireless communication network 100 comprises a serving cell 115.
  • the serving cell 1 15, or at least radio coverage thereof, is provided by a serving radio network node 110 comprised in the wireless communication network 100, or more particularly in a Radio Access Network (RAN) part thereof.
  • the first wireless communication network 100 may also comprise a target cell 116.
  • the target cell 116 may be comprised in a second wireless communication network 101 , e.g. telecommunication networks , in which embodiments herein may be implemented.
  • the second wireless communication network 101 may differ in that it is operated by another operator than the first wireless communication network 100 and/or is a wireless communication network according to another Radio Access Technology (RAT) than the first wireless communication network 100.
  • RAT Radio Access Technology
  • the first wireless communication network 100 and/or the second wireless communication network 101 may be LTE or LTE based network, but may be e.g. be any any cellular network or system, such as a, or based on a, UMTS, WCDMA, WCDMA/HSPA, LTE or GSM network, or any 3GPP cellular network.
  • the target cell 116, or at least radio coverage thereof, may be provided by a first target radio network node 111 comprised in the first wireless communication network 100 or the second wireless communication network 101 , or more particularly in RAN parts thereof.
  • the serving radio network node 1 10 serves a wireless device 120 in the serving cell 1 15.
  • the wireless device 120 is a device capable to wirelessly communicate in the wireless communication network 100, and possibly also the second wireless communication network 101 , over one or more radio links, via network nodes of the first wireless communication network 100 and/or the second wireless communication network, and with e.g. other communication devices in the same and/or other communication networks.
  • the wireless device 120 may e.g. correspond to a user equipment, a mobile station, a mobile terminal or a wireless terminal, a mobile phone, a computer such as e.g.
  • M2M Machine to Machine
  • MTC Machine Type of Communication
  • the serving radio network node 110 may, as illustrated in the figure, be a base station, e.g. an eNB in LTE, or any other radio network node capable of serving a wireless device, such as the wireless device 120, in the wireless communication network 100.
  • the target radio node 1 11 may, as illustrated in the figure, be a base station, e.g. an eNB in LTE, or any other radio network node capable of serving a wireless device, such as the wireless device 120, in the first wireless communication network 100 or the second wireless communication network 101.
  • different cells may be provided by one and the same logical and/or physical radio network node.
  • at least the serving radio network node 1 10 may be considered a physically different radio network node than the target radio network node 11 1.
  • the wireless device 120 is shown with a large arrow pointing to the right illustrating that the wireless device 120 is associated with a speed and moving to the right in the figure, towards the target cell 116.
  • the figure is for illustrating a situation where there may be a handover of the wireless device 120 from the serving radio network node 110 to the target radio network node 1 11.
  • the serving radio network node 110 and/or target radio network mode 1 11 comprised therein are eNBs.
  • the serving radio network node 1 10 and/or target radio network mode 1 11 comprised therein may be RNCs.
  • the serving radio network node 1 10 and/or target radio network mode 1 11 comprised therein are typically BSCs.
  • the serving radio network node 110 and the target radio network node 1 11 are communicatively connected to each directly or via one or more intermediate network nodes 130.
  • the one or more intermediate network nodes 130 may be comprised in the first wireless communication network 100 and/or the second wireless communication network 101 , typically in core network parts thereof, although also RAN parts may be involved.
  • the one or more intermediate nodes 130 may comprise one or more nodes for controlling and/or managing the serving radio network node 110 and/or the target radio network node 11 1.
  • the one or more intermediate network nodes 130 may be or comprise a MME.
  • the one or more intermediate network nodes first network node 130 may comprise MSCs and/or SGSNs.
  • the target cell 1 16 may be fully comprised in the serving cell 1 15 or vice versa, or the cells may overlap more or less and differently than shown in the figure.
  • Figure 2 is only schematic and for exemplifying purpose and that not everything shown in the figure may be required for all embodiments herein, as will be evident to the skilled person.
  • a wireless communication network that in reality corresponds to the wireless communication network 100 typically comprises several further network nodes, base stations, cells etc., as realized by the skilled person, but which are not shown herein for the sake of simplifying.
  • Figure 3 depicts a combined signaling diagram and flowchart and will be used to discuss examples of embodiments herein relating to a method for providing mobility information associated with the wireless device 120 from the serving radio network node 1 10 to the target radio network node 11 1.
  • the target network node 11 1 being a potentially new radio network node for serving the wireless device 120.
  • mobility information is meant information for use by a target radio network node 1 11 for handling mobility of the wireless device 120, such as for handling handover.
  • the method is performed in the first wireless communication network 100 and possibly also the second wireless communication network 101 if the target network node 1 11 is comprised therein.
  • the serving radio network node 1 10 obtains speed information about how fast the wireless device 120 moves.
  • speed of the wireless device 120 is herein meant how fast the wireless device 120 physically moves.
  • the wireless device 120 may be configured by parameters for setting what each state maps to, e.g. based on a number of cell switches under a certain time period. Such configuring parameters may be sent in system information broadcasted in the serving cell 1 15 by the serving network node 110. When events corresponding to the configuration occurs, the wireless device 5 120 may report to the serving radio network node 120.
  • the serving radio network node 110 may obtain the speed information internally.
  • Such speed information may be based on various information about the wireless device that the serving radio network node 1 10 has access to while and during the time the wireless device 120 is served in the serving cell 115.
  • various information may e.g. be associated events that occur, e.g. triggered while and by serving the wireless device 120, and may involve one or more locations associated with the wireless devise at certain points in time.
  • the one or more criteria may e.g. be pre-defined and/or predetermined, typically by an operator of the first wireless communication network 100.
  • the one or more criteria may be based on one or more threshold values and/or one or more algorithms. For example, a5 speed or range of speeds regarding how fast the wireless device 120 moves may be determined, e.g. calculated, based on a predefined algorithm and the obtained speed information. The determined speed or range of speeds may then be compared to a speed threshold value or values indicating a range or limit for speeds that are considered to be such, e.g. sufficiently high, so that they should or shall be taken into account by the target0 radio network node 11 1 for mobility management of the wireless device 120.
  • the serving radio network node 110 sends the mobility information comprising a speed indicator to the target radio network node 1 11 that receives the mobility information.
  • the speed indicator is based on the obtained speed information and indicates speed of the wireless device 120.
  • the mobility information comprising the speed indicator may be sent to the target radio network node 11 1 in response to the determination in Action 302.
  • the speed indicator may be of the same type, or even be a copy or comprise a copy of the obtained speed information in Action 301. However, typically the speed indicator is different than the speed information, in particular when the present action is in response to the determination in Action 302.
  • the speed indicator indicates to the target radio network
  • the value 15 such denotes a certain speed or a certain speed range.
  • the value is typically a single number, in the latter case it may be two values indicating the certain speed range or a single value indicating an upper or lower limit for the certain speed range being open ended range.
  • the value or values may denote a value or range of values based on number of cell switches per time unit, a distance per time unit,
  • Example of relative terms is when the speed indicator comprises information about speed of the wireless device 120 in relation to some reference, e.g. that the speed indicator corresponds, or maps, to a certain speed or certain speed range, which may be predetermined, e.g. by an operator of the first wireless communication network 100 and/or
  • the certain speed or certain speed range may have been predetermined based on characteristics of the first wireless communication network 100, the second wireless communication network 101 , and/or neighboring cells, e.g. the target cell 116.
  • the speed indicator may be in the
  • the speed indicator may indicate to the target radio network node 1 11 that the wireless device
  • the speed indicator comprises an identifier assigned to identify that the wireless device 120 moves below or above a certain speed or in a certain speed range.
  • the identifier may be predefined and/or predetermined and may be an example of when the speed indicator comprise information about how fast the wireless device 120 moves in relative terms as discussed above.
  • the identifier may e.g. be an information element (IE), and/or a bit or integer number, which may be predefined and/or predetermined to provide the identification.
  • the speed indicator may be, or be comprised in, a predefined IE.
  • the predefined IE may be a modified version of an IE that already exist and is defined according to some standard specification, or may be a new IE that may be specific for speed indication. In both cases it may preferably be comprised in one or more of said already existing messages as discussed separately below.
  • Action 304 may be a modified version of an IE that already exist and is defined according to some standard specification, or may be a new IE that may be specific for speed indication. In both cases
  • the target radio network node 1 11 manages mobility, e.g. handover, of the wireless device 120 based on the received speed indicator.
  • Manage mobility of the wireless device 5 120 may comprise setting up a new radio link to the wireless device 120. Setting up the radio link may involve making one or more of the following settings based on the received speed indicator: a Discontinuous Reception (DRX) setting, a frequency setting, a handover setting.
  • DRX Discontinuous Reception
  • the target radio network node 11 1 may use the received speed indicator as input to0 one or more algorithms to achieve the above and e.g. be able to prioritize a low frequency band, shorten a DRX cycle and set more appropriate parameters for handover.
  • the wireless device 120 By shorten the DRX cycle, better performance of services for the wireless device 120 is enabled. Further, via the frequency setting it is possible to order the wireless device 120 to measure on a specific frequency band directly after the incoming handover, for5 example a low frequency band and thereby larger cells, which may minimize the number of handovers when the wireless device 120 moves at high speed. Also, thanks to embodiments herein, specific radio network parameters and/or settings used during mobility such as handover, for example thresholds and Time-to-Trigger (TTT) may be better adapted to the speed of the wireless device 120, e.g. when it moves at high speed.0 By optimizing these parameters based on the speed indicator, e.g. the number of drops during handover may be reduced.
  • TTTT Time-to-Trigger
  • managing mobility according to the present action may involve and result in that messages are sent to the serving radio network node as in conventional handover, see e.g Msg 3) and Msg 4) in Figure 1 in the case of LTE.
  • Msg 3 and Msg 4 in Figure 1 in the case of LTE.
  • embodiments herein enable the target radio network node 11 1 to e.g. get information about the speed of the wireless device 120, and e.g. be informed if the wireless device 120 is a "high speed" wireless device, already at the first time when resources are to be allocated in the target radio network node 1 11. It is advantageous, as5 enabled by embodiments herein, to be able to allocate better, or even the right, resources, apply service specific functions and set better, or even the right, radio network parameters directly, or at least much faster, than else would be possible. This reduces problems that else may occur at e.g. handover, in particular for wireless devices that move at such high speed that conventional methods for handover may cause problems or be not be as efficient as would be desirable.
  • the result may eventually be that a radio link with the same properties as with embodiments herein is set up, but thanks to the speed indicator it is possible to directly, already from the start, or at least faster, be able to set up a more appropriate radio link for the wireless device 120.
  • embodiments herein enable use of specific parameter settings based on the speed of the wireless device already at the beginning of setting up the first radio link, which increase the performance of service(s) provided to the wireless device 120, enables reduction of drop rates during handover and enable improved KPIs.
  • the speed indicator as discussed above in connection with Figure 3 is e.g.
  • Subsequent columns in each table indicate the target radio network node 101 for respective RAT, i.e. LTE, UMTS/WCDMA and GSM.
  • the target radio network node 1 11 may be comprised in another wireless communication network, e.g. the second wireless communication network 101.
  • GSM has separate procedure for speech and data, there are two rows per table with different messages only for the GSM columns.
  • LTE as mentioned in the Background, is possible to perform intra handover, i.e.
  • LTE over X2 interface
  • S1 interface that may be used both for intra- as well as inter-RAT handover
  • LTE LTE
  • Target radio network node 1 11 is eNB " is eNB
  • Table 1 Possible messages to comprise speed indicator when RAT of serving radio node 1 10 is LTE and (intra-)handover is taking place over the X2 interface (direct between eNBs).
  • REQUIRED REQUEST REQUEST
  • REQUEST REQUEST
  • 3GPP see e.g. 3GPP (see e.g. 3GPP (see e.g. 3GPP (see e.g. 3GPP (see e.g. 3GPP (see e.g. 3GPP (see e.g. 3GPP (see e.g. 3GPP (see e.g. 3GPP TS 25.413, TS 25.413, TS 36.413, TS 48.008, version 12.2.0, version 12.2.0, version 12.3.0, version 12.0.0, chapter 9.1.9) chapter 9.1.10) chapter 9.1.5.4) chapter 3.2.1.8)
  • 5 110 is GSM.
  • Figure 4 is a flow chart schematically illustrating embodiments of a method, performed by the serving radio network node 110, for providing mobility information associated with the wireless device 120 to the target radio network node 1 11.
  • the target0 radio network node 110 being a potentially new radio network node for serving the wireless device 120.
  • the serving radio network node 110 is comprised in the first wireless communication network 100 and the target radio network node 11 1 is also comprised in the first wireless communication network 100 or in the second wireless communication network 101.
  • the method comprises the following actions, which actions may be taken in any suitable order and/or be carried out fully or partly overlapping in time when this is possible and suitable.
  • Action 401
  • the serving radio network node 1 10 obtains speed information about how fast the wireless device 120 moves.
  • This action may fully or partly correspond to Action 301 above.
  • the serving radio network node 1 10 determines, based on the obtained speed information and one or more criteria, that the speed of the wireless device 120 should be taken into account by the target radio network node 11 1 when the target radio network node 11 1 manages mobility of the wireless device 120.
  • the serving radio network node 1 10 sends, to the target radio network node 11 1 , the mobility information comprising a speed indicator.
  • the speed indicator is based on the obtained speed information and indicates speed of the wireless device 120.
  • the mobility information comprising the speed indicator is sent to the target radio network node 11 1 in response to the determination in Action 402.
  • the speed indicator may indicate to the target radio network node 1 1 1 that the speed of the wireless device 120 should or shall be taken into account when the target radio network node 1 11 manages mobility of the wireless device 120.
  • the speed indicator comprise information about how fast the wireless device 120 moves in absolute or relative terms.
  • the speed indicator is comprised in a message sent by the serving radio network node 1 10 for preparing handover to the target radio network node 1 11 and/or in a message received by the target radio network node 1 11 for preparing handover from the serving target radio network node 110.
  • Figure 5 is a schematic block diagram for illustrating embodiments of the serving radio network node 1 10 mentioned above in connection with Figure 4, for providing mobility information associated with the wireless device 120 to the target radio network node 1 11 , in particular how the serving radio network node 110 may be configured to perform the method and actions discussed above in connection with Figure 4.
  • the serving radio network node 1 10 may comprise a processing module 501 , 5 such as a means, one or more hardware modules, including e.g. one or more processors, and/or one or more software modules for performing said methods and/or actions.
  • a processing module 501 , 5 such as a means, one or more hardware modules, including e.g. one or more processors, and/or one or more software modules for performing said methods and/or actions.
  • the serving radio network node 110 may further comprise a memory 502 that may comprise, such as contain or store, a computer program 503.
  • the computer program comprises 'instructions' or 'code' directly or indirectly executable by the serving radio
  • the memory 502 may comprise one or more memory units and may be further be arranged to store data, such as configurations and/or applications involved in or for performing functions and actions of embodiments herein.
  • the serving radio network node 1 10 may comprise a processing circuit
  • the memory 502 may comprise the computer program 503 executable by the processing circuit 504, whereby the serving radio network node 1 10 is operative, or
  • the serving radio network node 110 e.g. the processing module 501 , comprises an Input/Output (I/O) module 505, configured to be involved in, e.g. by performing, any communication to and/or from other units and/or nodes, such as sending and/or receiving information to and/or from other external nodes or devices.
  • I/O Input/Output
  • module 505 may be exemplified by an obtaining, e.g. receiving, module and/or a
  • the serving radio network node 1 may comprise one or more of an obtaining module 506, a determining module 507 and a sending module 508 as exemplifying hardware and/or software
  • the obtaining module 506, the determining module 507 and the sending module 508 may be fully or partly implemented by the processing circuit 504.
  • the serving radio network node 110, and/or the processing module 501 and/or the obtaining module 506 are operative, or configured, to obtain said speed information about how fast the wireless device 120 moves.
  • the serving radio network node 110, and/or the processing module 501 and/or the determining module 507 5 may be operative, or configured, to determine, based on the obtained speed information and said one or more criteria, that the speed of the wireless device 120 should be taken into account by the target radio network node 11 1 when the target radio network node 1 11 manages mobility of the wireless device 120.
  • 10 network node 110, and/or the processing module 501 and/or the sending module 507 are operative, or configured, to send, to the target radio network node 1 11 , the mobility information comprising said speed indicator, which speed indicator is based on the obtained speed information and indicates speed of the wireless device 120.
  • the 15 507 may be operative, or configured, to do this in response to said determination that the speed of the wireless device 120 should be taken into account by the target radio network node 11 1 when the target radio network node 1 11 manages mobility of the wireless device 120.
  • Figure 6 is a flow chart schematically illustrating embodiments of a method
  • the target radio network node 1 11 for managing mobility of the wireless device 120 being served by the serving radio network node 1 10.
  • the target radio network node 11 1 being a potentially new radio network node for serving the wireless device 120.
  • the serving radio network node 110 is comprised in the first wireless
  • 25 communication network 100 and said target radio network node 1 11 is also comprised in the first wireless communication network 100 or in the second wireless communication network 101.
  • the method comprises the following actions, which actions may be taken in any suitable order and/or be carried out fully or partly overlapping in time when this is possible 30 and suitable.
  • the target radio network node 1 11 receives, from the serving radio network node 1 10, mobility information associated with the wireless device 120.
  • the mobility information 35 comprises a speed indicator indicating speed of the wireless device 120.
  • the speed indicator may further indicate to the target radio network node 1 11 that the speed of the wireless device 120 should or shall be taken into account when the target radio network node 11 1 manages mobility of the wireless device 120.
  • the speed indicator comprise information about how fast the wireless device 120 moves in absolute or relative terms.
  • the speed indicator is comprised in a message sent by the serving radio network node 110 for preparing handover to the target radio network node 11 1.
  • the speed indicator may be comprised in a message received by the target radio network node 11 1 for preparing handover from the serving target radio network node 1 10.
  • the speed indicator comprises an identifier assigned to identify that the wireless device 120 moves below or above a certain speed or in a certain speed interval.
  • This action may fully or partly correspond to Action 303 above.
  • the target radio network node 11 1 manages mobility of the wireless device 120 based on the received speed indicator.
  • Managing mobility of the wireless device 120 may comprises setting up a new radio link to the wireless device 120, e.g. as part of handover of the wireless device 120 from the serving radio network node 110 to the target radio network node 11 1.
  • Setting up the radio link may involves making one or more of the following settings based on the received speed indicator: a DRX setting, a frequency setting, a handover setting.
  • Figure 7 is a schematic block diagram for illustrating embodiments of the target radio network node 11 1 mentioned above in connection with Figure 6, for managing mobility of the wireless device 120 being served by the serving radio network node 110, in particular how the target radio network node 1 11 may be configured to perform the method and actions discussed above in connection with Figure 5.
  • the target radio network node 1 11 may comprise a processing module 701 , such as a means, one or more hardware modules, including e.g. one or more processors, and/or one or more software modules for performing said methods and/or actions.
  • a processing module 701 such as a means, one or more hardware modules, including e.g. one or more processors, and/or one or more software modules for performing said methods and/or actions.
  • the target radio network node 11 1 may further comprise a memory 702 that may comprise, such as contain or store, a computer program 703.
  • the computer program comprises 'instructions' or 'code' directly or indirectly executable by the target radio network node 1 11 so that it performs the said methods and/or actions.
  • the memory 702 may comprise one or more memory units and may be further be arranged to store data, such as configurations and/or applications involved in or for performing functions and actions of embodiments herein.
  • the memory 702 may comprise the computer program 703 executable by the processing circuit 704, whereby the target radio network node 11 1 is operative, or configured, to perform said method and/or actions.
  • the target radio network node 11 1 e.g. the processing module 701 , may comprise one or more of an receiving module 706 and a managing module 707 as exemplifying hardware and/or software module(s).
  • the receiving module 706 and the managing module 707 may be fully or partly
  • the target radio network node 11 1 , and/or the processing module 701 and/or the receiving module 706 are operative, or configured, to receive, from the serving radio network node 110, said mobility information associated with the wireless device 120, which mobility information comprises the speed indicator indicating speed of the wireless device 120.
  • the target radio network node 11 1 , and/or the processing module 701 and/or the managing module 707 are operative, or configured, to manage mobility of the wireless device 120 based on the received speed indicator. In some embodiments, this comprises that the target radio network node 11 1 , and/or the processing module 701 and/or the managing module 707 are operative, or configured, to set up said new radio link to the wireless device 120.
  • Figures 8a-c are schematic drawings illustrating embodiments relating to a computer program that may be any one of the computer programs 503, 703 and that comprises instructions that when executed by the processing circuits 504, 704
  • processing modules 501 , 701 respectively causes the serving radio network node 110 and/or the target radio network node 1 11 to perform as described above.
  • a data carrier e.g. a computer program product, comprising any one or both of the computer programs 503, 703.
  • the data carrier may be one of an electronic signal, an optical signal, a radio signal, and a computer readable medium. Any one or both of the computer programs 503, 703 may thus be stored on the computer readable medium.
  • data carrier may be excluded a transitory, propagating signal and the data carrier may correspondingly be named non-transitory data carrier.
  • Non-limiting examples of the data carrier being a computer-readable medium is a memory card or a memory stick 801 as in Figure 8a, a disc storage medium 802 such as a CD or DVD as in Figure 8b, a mass storage device 803 as in Figure 8c.
  • the mass storage device 803 is typically based on hard drive(s) or Solid State Drive(s) (SSD).
  • the mass storage device 803 may be such that is used for storing data accessible over a computer network 804, e.g. the Internet or a Local Area Network (LAN).
  • a computer network 804 e.g. the Internet or a Local Area Network (LAN).
  • Any one or both of the computer programs 503, 703 may furthermore be provided as a pure computer program or comprised in a file or files.
  • the file or files may be stored on the computer-readable medium and e.g. available through download e.g. over the computer network 804, such as from the mass storage device 803 via a server.
  • the server may e.g. be a web or File Transfer Protocol (FTP) server.
  • FTP File Transfer Protocol
  • the file or files may e.g. be executable files for direct or indirect download to and execution on the serving radio network node 110 and/or target radio network node 1 11 , e.g. by any one or both of the processing circuits 504, 704.
  • the file or files may also or alternatively be for intermediate download and compilation involving the same or another processor to make them executable before further download and execution causing the serving radio network node 1 10 and/or target radio network node 1 11 to perform the method as described above.
  • any hardware module(s) and/or circuit(s) mentioned in the foregoing may e.g. be included in a single ASIC or FPGA, or be distributed among several separate hardware components, whether individually packaged or assembled into a System-on-a-Chip (SoC).
  • SoC System-on-a-Chip
  • modules and circuitry discussed herein may refer to a combination of hardware modules, software modules, analog and digital circuits, and/or one or more processors configured with software and/or firmware, e.g. stored in memory, that, when executed by the one or more processors make the serving radio network node 110 and/or the target radio network node 1 11 to be configured to and/or to perform the above-described methods, respectively.
  • network node may as such refer to any type of radio network node (described below) or any network node, which may communicate with at least a radio network node.
  • network nodes include any radio network node stated above, a core network node (e.g. MSC, MME, etc.), Operations &
  • O&M Operations Support Systems
  • OSS Operations Support Systems
  • SON Self Organizing Network
  • positioning node e.g. E-SMLC
  • MDT MDT
  • radio network node may as such refer to any type of network node capable of serving a wireless device, e.g. UE, and/or that are connected to other network node(s) or network element(s) or any radio node from which a wireless device receives signals.
  • a radio network is typically comprised in a Radio Access Network
  • radio network nodes part of a wireless communication network.
  • radio network nodes are examples of radio network nodes.
  • Node B base station (BS), multi-standard radio (MSR) radio node such as MSR BS, eNodeB, network controller, radio network controller (RNC), base station controller (BSC), relay, donor node controlling relay, base transceiver station (BTS), access point (AP), transmission points, transmission nodes, nodes in distributed antenna system (DAS) etc.
  • BS base station
  • MSR multi-standard radio
  • node as used herein may be used for the sake of simplicity, in order to denote a node which may be a network node, a radio network node or a wireless device, as applicable.
  • the term "memory” may refer to a hard disk, a magnetic storage medium, a portable computer diskette or disc, flash memory, random access memory (RAM) or the like. Furthermore, the memory may be an internal register memory of a processor.
  • the expression “configured to” may mean that a processing circuit is configured to, or adapted to, by means of software or hardware configuration, perform one or more of the actions described herein.
  • number may be any kind of digit, such as binary, real, imaginary or rational number or the like. Moreover, “number”, “value” may be one or more characters, such as a letter or a string of letters. Also, “number”, “value” may be represented by a bit string.
  • the expression “transmit” and “send” are typically interchangeable. These expressions may include transmission by broadcasting, uni-casting, group-casting and the like. In this context, a transmission by broadcasting may be received and decoded by any authorized device within range. In case of uni-casting, one specifically addressed device may receive and encode the transmission. In case of group-casting, e.g. multi- casting, a group of specifically addressed devices may receive and decode the

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

Abstract

Dans cette invention, un nœud de réseau radio de desserte (110) dessert un dispositif sans fil (120) et est compris dans un premier réseau de communication sans fil (100). Un nœud de réseau radio cible (111), qui est un nouveau nœud de réseau radio potentiel destiné à desservir le dispositif sans fil (120), est également compris dans le premier réseau de communication sans fil (100) ou dans un autre, un second, réseau de communication sans fil (101). Le nœud de réseau radio de desserte (110) obtient (301 ; 401) des informations de vitesse relatives à la vitesse à laquelle le dispositif sans fil (120) se déplace. Le nœud de réseau radio de desserte (110) envoie (303, 403) au nœud de réseau radio cible (111) des informations de mobilité comprenant un indicateur de vitesse. L'indicateur de vitesse est basé sur les informations de vitesse obtenues et indique la vitesse du dispositif sans fil (120).
PCT/SE2014/051579 2014-12-30 2014-12-30 Informations de mobilité comprenant un indicateur de vitesse Ceased WO2016108740A1 (fr)

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US10470072B2 (en) 2017-06-15 2019-11-05 At&T Intellectual Property I, L.P. Facilitation of multiple input multiple output communication for 5G or other next generation network
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