SE515862C2 - Matchless lobe handover - Google Patents

Matchless lobe handover

Info

Publication number
SE515862C2
SE515862C2 SE9800869A SE9800869A SE515862C2 SE 515862 C2 SE515862 C2 SE 515862C2 SE 9800869 A SE9800869 A SE 9800869A SE 9800869 A SE9800869 A SE 9800869A SE 515862 C2 SE515862 C2 SE 515862C2
Authority
SE
Sweden
Prior art keywords
base station
station location
lobe
sector
transmitter
Prior art date
Application number
SE9800869A
Other languages
Swedish (sv)
Other versions
SE9800869D0 (en
SE9800869L (en
Inventor
Henrik Andersson
Per-Goeran Andermo
Original Assignee
Radio Design Innovation Tj Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from SE9703823A external-priority patent/SE9703823D0/en
Priority claimed from SE9703822A external-priority patent/SE9703822D0/en
Application filed by Radio Design Innovation Tj Ab filed Critical Radio Design Innovation Tj Ab
Priority to SE9800869A priority Critical patent/SE515862C2/en
Publication of SE9800869D0 publication Critical patent/SE9800869D0/en
Priority to CN98811543A priority patent/CN1281622A/en
Priority to EA200000434A priority patent/EA002245B1/en
Priority to PCT/SE1998/001891 priority patent/WO1999021391A2/en
Priority to AU96591/98A priority patent/AU9659198A/en
Publication of SE9800869L publication Critical patent/SE9800869L/en
Publication of SE515862C2 publication Critical patent/SE515862C2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0491—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more sectors, i.e. sector diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection

Landscapes

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

Abstract

The present invention relates to a method in a telecommunication system for communication between mobile stations and base station sites in the telecommunication system. The mobile stations in said telecommunication system, preferably a cellular mobile radio system, move within a site on the same channel by use of seamless lobe or sector handover.

Description

25 30 35 515 862 2 Handover utan byta sändar-/mottagarutrustning innebär ökad kapacitet eftersom det resulterar bättre trunkingeffektivitet vid basstationsplatsen. 25 30 35 515 862 2 Handover without changing transmitter / receiver equipment means increased capacity as it results in better trunking efficiency at the base station location.

Andra särdrag hos uppfinningen är angivna i de beroende patentkraven.Other features of the invention are set out in the dependent claims.

Kortfattad beskrivning av ritningarna Figur 1 visar ett flexibelt lobformningssystem; Figur 2 visar ett fast lobformningssystem enligt uppfinningen; Figur 3 är ett blockschema av systemet i figur 2; Figur 4 beskriver intilliggande fasta lober med tre exciterade antennpaneler i enlighet med uppfinningen; Figur 5 beskriver en basstationsplats med tre sektorer som vardera inbegriper en lob och med en antenn per sektor; Figur 6 beskriver en basstationsplats i enlighet med uppfinningen med tre sektorer vardera inbegripande fem lober, och en gruppantenn per sektor; Figur 7 beskriver en basstationsplats enligt uppfinningen med tre sektorer som vardera inbegriper fem lober, och en gruppantenn for alla sektorerna; Figur 8 beskriver en basstationsplats enligt uppfinningen med en sektor som inbegriper femton lober och en gruppantenn fór nämnda sektor; Figurema 9 - 10 beskriver olika strukturer för lobforrnningssystemet i enlighet med uppfinningen.Brief Description of the Drawings Figure 1 shows a flexible lobe forming system; Figure 2 shows a fixed lobe forming system according to the invention; Figure 3 is a block diagram of the system in Figure 2; Figure 4 describes adjacent fixed lobes with three excited antenna panels in accordance with the invention; Figure 5 describes a base station location with three sectors, each comprising one lobe and with one antenna per sector; Figure 6 describes a base station location in accordance with the invention with three sectors each including five lobes, and one array antenna per sector; Figure 7 describes a base station location according to the invention with three sectors each comprising five lobes, and a group antenna for all sectors; Figure 8 describes a base station site according to the invention with a sector comprising fifteen lobes and a group antenna for said sector; Figures 9 - 10 describe different structures for the lobe formation system in accordance with the invention.

Detaljerad beskrivning av utföringsfonner av uppfinningg Uppfinningen avser huvudsakligen handover mellan lober utan att ändra kanal.Detailed Description of Embodiments of the Invention The invention relates generally to handover between lobes without changing channel.

Detta medför att mobilterrninalen kan röra sig inom en basstationsplats på samma kanal genom att använda skarvfri lobhandover. Handovern är skarvfri i betydelsen att den inte kan märkas av mobilanvändaren.This means that the mobile terminal can move within a base station location on the same channel by using splice-free lobe handover. The handover is joint-free in the sense that it cannot be felt by the mobile user.

Uppfinningen kommer nu att beskrivas med hänvisning till figurerna 2 - 10.The invention will now be described with reference to Figures 2 - 10.

Figur 2 beskriver en implementering av blockschemat i figur 3. TRX i figur 2 motsvarar sändar- och mottagarutrustning i figurerna 3, 9 - 10. LFl - LFn och antennerna i figur 2 motsvarar den gruppantennrelaterade utrustningen och grupp- antennen i figurerna 3 och 10.Figure 2 describes an implementation of the block diagram in Figure 3. TRX in Figure 2 corresponds to transmitter and receiver equipment in Figures 3, 9 - 10. The LF1 - LFn and the antennas in Figure 2 correspond to the group antenna related equipment and the group antenna in Figures 3 and 10.

Mobilradiosystemet enligt uppfinningen inbegriper flera basstationsplatser och mobilstationer (terminaler). Varje basstationsplats har en eller flera sektorer upp- delade i ett antal fasta lober (figurerna 4 - 8). Basstationsplatsen inbegriper bas- stationer med basstationssändarutrustning och basstationsmottagarutrustning.The mobile radio system according to the invention includes several base station locations and mobile stations (terminals). Each base station location has one or fl your sectors divided into a number of fixed lobes (Figures 4 - 8). The base station location includes base stations with base station transmitter equipment and base station receiver equipment.

Mobilstationen innefattar en mobilstationsmottagare och en mobilstationssändare.The mobile station includes a mobile station receiver and a mobile station transmitter.

Kommunikationen i mobilradiosystemet mellan en basstationsplats och en mobil- station åstadkommes genom följande steg. Såsom nämnts ovan använder varje bas- stationsplats ett antal fasta lober (figurerna 4 -8) i enlighet med figurema 2, 3, 9 och 10 15 20 25 30 35 515 862 3 10. En förbindelse upprättas mellan basstationsplatsens sändar-/mottagarutrustning och mobilstation. En av lobema i en av sektorerna vid basstationsplatsen används för sändning av signaler mellan basstationsplatsens sändare/mottagare och mobilstationens sändare/mottagare. Basstationsplatsen mäter kontinuerligt signalerna som mottages från mobilstationen. Exempelvis bestämmer basstations- platsen den bästa loben genom att jämföra den mottagna signalen i den aktuella loben med signalen som mottages i alternativa lober. Detta kan utföras genom att jämföra mottagen signalstyrka eller att jämföra kvoten mellan mottagen signal och interferens i varje lob.The communication in the mobile radio system between a base station location and a mobile station is achieved by the following steps. As mentioned above, each base station location uses a number of fixed lobes (Figures 4-8) in accordance with Figures 2, 3, 9 and 10. . One of the lobes in one of the sectors at the base station location is used to transmit signals between the base station transmitter / receiver and the mobile station transmitter / receiver. The base station location continuously measures the signals received from the mobile station. For example, the base station location determines the best lobe by comparing the received signal in the current lobe with the signal received in alternative lobes. This can be done by comparing received signal strength or comparing the ratio between received signal and interference in each lobe.

Denna jämförelse mellan t.ex. signalstyrkor i lobema kan föranleda en hand- over mellan lobema. När handovem utföres byter basstationsplatsen den använda loben hos basstationsplatsen till en annan lob i samma basstationsplats utan att byta den betjänande sändar- och mottagarutrustningen, dvs basstationsplatsen använder samma mottagar-/sändarutrustning till den nya loben.This comparison between e.g. signal strengths in the lobes can cause a handover between the lobes. When the handover is performed, the base station location changes the used lobe of the base station location to another lobe in the same base station location without replacing the serving transmitter and receiver equipment, ie the base station location uses the same receiver / transmitter equipment for the new lobe.

Således byts kanalen inte vid byte av lob. Det bör inses att med kanal menar vi frekvens, tidslucka, CDMA-kodning, osv. Det bör också inses att i stället för att utföra handover mellan lober såsom nämns ovan, kan handover mellan sektorer också åstadkommas på samma sätt.Thus, the channel is not changed when changing the lobe. It should be understood that by channel we mean frequency, time slot, CDMA coding, etc. It should also be appreciated that instead of performing handover between lobes as mentioned above, handover between sectors can also be accomplished in the same manner.

Ett antal olika handoversituationer kommer nu att beskrivas med hänvisning speciellt till figurerna 5 - 10. Först kommer begreppet ” basstationsplats” att för- klaras med hänvisning till figur 6. Begreppet ”basstationsplats” i figur 6 är definierat som täckningsområdet för tre sektorer och basstationsplatsen inbegriper de tre gruppantennema som normalt styrs av tre basstationer, dvs en basstation för varje gruppantenn.A number of different handover situations will now be described with reference specifically to Figures 5 - 10. First, the term “base station location” will be explained with reference to Figure 6. The term “base station location” in Figure 6 is defined as the coverage area for three sectors and the base station location includes the three group antennas which are normally controlled by three base stations, i.e. one base station for each group antenna.

Såsom nämns ovan kan handover (HO) utföras mellan olika lober och olika sektorer i en basstationsplats. Såsom beskrivs i figur 5 kan en basstationsplats bestå av tre olika fysiska antenner, var och en kopplad till en basstation, i vilken hand- ovem kan utföras mellan dessa antenner (basstationer). Detta är fallet i figurerna 5, 9 i vilka lob-/sektorhandover utföres genom att byta från sektor 1 till sektor 2. Vid bytet används dock samma sändar-/mottagarutrustningen (TRX) i basstationsplatsen, samt samma kanal.As mentioned above, handover (HO) can be performed between different lobes and different sectors in a base station location. As described in Figure 5, a base station location may consist of three different physical antennas, each connected to a base station, in which hand operation can be performed between these antennas (base stations). This is the case in Figures 5, 9 in which lobe / sector handover is performed by switching from sector 1 to sector 2. However, when switching, the same transmitter / receiver equipment (TRX) is used in the base station location, as well as the same channel.

I figurerna 3 och 6 utföres lobhandover inom en sektor utan att byta sändar- /mottagarutrustning eller kanal.In Figures 3 and 6, lobe handover is performed within a sector without changing transmitter / receiver equipment or channel.

I figurerna 3 och 7 utföres lobhandover mellan lobema 4 och 5 antingen inom en sektor eller utföres en lob-/sektorhandover mellan sektorerna 6 och 7, varvid handovern utföres från lob 8 i sektor 6 till lob 9 i sektor 7. Samma TRX-utrustning och samma kanal används.In Figures 3 and 7, lobe handover between lobes 4 and 5 is performed either within a sector or a lobe / sector handover is performed between sectors 6 and 7, the handover being performed from lobe 8 in sector 6 to lobe 9 in sector 7. The same TRX equipment and the same channel is used.

I figurerna 6, 10 utföres lob-/sektorhandover genom att byta från en sektor till en annan sektor men samma sändar-/mottagarutrustning hos basstationsplatsen 515 862 4 används.In Figures 6, 10, lobe / sector handover is performed by switching from one sector to another sector but the same transmitter / receiver equipment of the base station location 515 862 is used.

Ovanstående betraktas endast som föredragna utföringsformer och upp- ñnningens ømfattning är endast begränsad av följande patentkrav.The above are considered only as preferred embodiments and the scope of the invention is limited only by the following claims.

Claims (12)

5 10 15 20 25 30 35 515 862 5 PATENTKRAV5 10 15 20 25 30 35 515 862 5 PATENT REQUIREMENTS 1. l. Metod i ett telekommunikationssystem för kommunikation mellan mobilstationer och åtminstone en basstationsplats, vilken basstation har en eller flera sektorer vardera uppdelade i ett antal fasta lober innefattande stegen: - att upprätta en förbindels mellan en basstationsplats sändar- _ /mottagarutrustning i nämnda åtminstone ena basstationsplats och en mobilstation; - att sända signaler från nämnda basstationsplats sändarutrustning till nämnda mobilstations mottagare och att sända signaler från nämnda mobilstations sändare till nämnda basstationsplats mottagarutrustning med användning av en av nämnda lober i en av sektorerna i nämnda basstation; - att byta nämnda användarlob i nämnda åtminstone ena basstationsplats till en annan lob i nämnda åtminstone ena basstationsplats utan att byta sändar-/mottagarutrustning i nämnda basstationsplats och utan att byta kanal, så att nämnda mobilstationer rör sig inom nämnda åtminstone ena basstationsplats på en-kanal genom att använda skarvfri lobhandover. iA method in a telecommunication system for communication between mobile stations and at least one base station location, which base station has one or more sectors divided into a number of fixed lobes comprising the steps of: - establishing a connection between a base station location transmitter / receiver equipment in said at least one base station location and one mobile station; - transmitting signals from said base station location transmitter equipment to said mobile station receiver and transmitting signals from said mobile station transmitter to said base station location receiver equipment using one of said lobes in one of the sectors of said base station; exchanging said user lobe in said at least one base station location for another lobe in said at least one base station location without changing transmitter / receiver equipment in said base station location and without changing channel, so that said mobile stations move within said at least one base station location on one channel by using seamless lobe handover. in 2. Metod enligt krav l, kännetecknad av en gmppantenn och dess tillhörande utrustning används för att bilda fasta lober. ,Method according to claim 1, characterized by a group antenna and its associated equipment is used to form fixed lobes. , 3. Metod enligt krav l eller 2, kännetecknad av att bytet av lob görs utan någon si gnalering eller kanalorder till och från nämnda basstationsplats för att styra bytet av lob.Method according to claim 1 or 2, characterized in that the change of lobe is made without any signaling or channel order to and from said base station location to control the change of lobe. 4. Metod enligt något av föregående krav, kännetecknad av att utrustning i nämnda basstationsplats bestämmer den bästa loben genom att jämföra signaler som mottags i en aktuell lob med signaler mottagna i intilliggande lober.Method according to any one of the preceding claims, characterized in that equipment in said base station location determines the best lobe by comparing signals received in a current lobe with signals received in adjacent lobes. 5. Metod enligt krav 4, kännetecknad av att signaler jämföras genom att detektera mottagen signalstyrka.Method according to claim 4, characterized in that signals are compared by detecting received signal strength. 6. Metod enligt krav 4, kännetecknad av att signaler jämföres genom att bedöma kvoten mottagen signal/interferens.Method according to claim 4, characterized in that signals are compared by assessing the signal / interference received ratio. 7. Metod i ett telekommunikationssystem för kommunikation mellan mobilstationer och åtminstone en basstationsplats, vilken basstation har flera sektorer, innefattande stegen: - att upprätta en förbindels mellan en basstationsplats sändar- 10 15 20 25 .515 862 6 /mottagarutrustning i nämnda åtminstone ena basstationsplats och en mobilstation; - att sända signaler från nämnda basstationsplats sändarutrustning till nämnda mobilstations mottagare och att sända signaler från nämnda mobilstations sändare till nämnda basstationsplats mottagarutrustning med användning av en av nämnda sektorer i nämnda basstation; - att byta den använda sektorn i nämnda basstationsplats till en annan sektor i nämnda basstationsplats utan att byta sändar-/mottagarutrustning i basstationsplatsen och utan att byta kanal, så att nämnda mobilstationer rör sig inom nämnda åtminstone ena basstationsplats på en kanal genom att använda skarvfri sektorhandover.A method in a telecommunication system for communication between mobile stations and at least one base station location, which base station has fl your sectors, comprising the steps of: - establishing a connection between a base station location transmitter / receiver equipment in said at least one base station location and a mobile station; - transmitting signals from said base station location transmitter equipment to said mobile station receiver and transmitting signals from said mobile station transmitter to said base station location receiver equipment using one of said sectors in said base station; - changing the used sector in said base station location to another sector in said base station location without changing transmitter / receiver equipment in the base station location and without changing channel, so that said mobile stations move within said at least one base station location on a channel by using splice-free sector handover . 8. Metod enligt något av kraven l - 7, kännetecknad av att nämnda kanal inte byts vid byte av sektor.Method according to any one of claims 1 - 7, characterized in that said channel is not changed when changing sector. 9. Metod enligt något av kraven 7 eller 8, kännetecknad av att byte av sektor görs utan någon si gnalering eller kanalorder till eller från nämnda bas- stationsplats för att styra nämnda byte av sektor.Method according to any one of claims 7 or 8, characterized in that a change of sector is made without any signaling or channel order to or from said base station location to control said change of sector. 10. Metod enligt något av kraven 7 - 9, kännetecknad av. att utrustning i nämnda basstationsplats bestämmer den bästa sektorn genom att jämföra signaler som mottages i en aktuell sektor med signaler som mottages i intilliggande sektorer.Method according to one of Claims 7 to 9, characterized in that. that equipment in said base station location determines the best sector by comparing signals received in a current sector with signals received in adjacent sectors. 11. Metod enligt krav 10, kännetecknar! av att nämnda signaler jämföres genom att detektera mottagen signalstyrka.Method according to claim 10, characterized in! by comparing said signals by detecting received signal strength. 12. Metod enligt krav 10, kännetecknad av att nämnda signaler jämföres genom att bedöma kvoten mottagen si gnal/interferens.Method according to claim 10, characterized in that said signals are compared by judging the ratio of received signal / interference.
SE9800869A 1997-10-20 1998-03-17 Matchless lobe handover SE515862C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE9800869A SE515862C2 (en) 1997-10-20 1998-03-17 Matchless lobe handover
CN98811543A CN1281622A (en) 1997-10-20 1998-10-20 Seamless lobe handover
EA200000434A EA002245B1 (en) 1997-10-20 1998-10-20 Seamless lobe handover
PCT/SE1998/001891 WO1999021391A2 (en) 1997-10-20 1998-10-20 Seamless lobe handover
AU96591/98A AU9659198A (en) 1997-10-20 1998-10-20 Seamless lobe handover

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9703823A SE9703823D0 (en) 1997-10-20 1997-10-20 Method for seamless lobe shifting and interference cancellation
SE9703822A SE9703822D0 (en) 1997-10-20 1997-10-20 Seamless lobe handover
SE9800869A SE515862C2 (en) 1997-10-20 1998-03-17 Matchless lobe handover

Publications (3)

Publication Number Publication Date
SE9800869D0 SE9800869D0 (en) 1998-03-17
SE9800869L SE9800869L (en) 1999-04-21
SE515862C2 true SE515862C2 (en) 2001-10-22

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Application Number Title Priority Date Filing Date
SE9800869A SE515862C2 (en) 1997-10-20 1998-03-17 Matchless lobe handover

Country Status (5)

Country Link
CN (1) CN1281622A (en)
AU (1) AU9659198A (en)
EA (1) EA002245B1 (en)
SE (1) SE515862C2 (en)
WO (1) WO1999021391A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6633761B1 (en) * 2000-08-11 2003-10-14 Reefedge, Inc. Enabling seamless user mobility in a short-range wireless networking environment
US6628235B2 (en) * 2001-12-17 2003-09-30 The Boeing Company Method for phased array antenna signal handoff
US8289939B2 (en) 2002-11-04 2012-10-16 Xr Communications Llc Signal communication coordination
AU2003286830A1 (en) * 2002-11-04 2004-06-07 Vivato, Inc. Forced beam switching in wireless communication systems having smart antennas
US8412106B2 (en) 2002-11-04 2013-04-02 Xr Communications, Llc Directed wireless communication
US20060234777A1 (en) * 2005-04-18 2006-10-19 Telefonaktiebolaget Lm Ericsson (Publ) Flexible multi-sector multiple antenna system
EP2580811B1 (en) 2010-06-11 2018-05-16 Telefonaktiebolaget LM Ericsson (publ) A node in a communication system with switchable antenna functions

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8802229D0 (en) * 1988-06-14 1988-06-14 Ericsson Telefon Ab L M MOBILE RADIO STATION PROCEDURE
US5732359A (en) * 1994-05-13 1998-03-24 Westinghouse Electric Corporation Mobile terminal apparatus and method having network inter-operability
EP0766901B1 (en) * 1994-06-23 2004-10-27 Telefonaktiebolaget LM Ericsson (publ) Intra-cell handover with antenna arrays

Also Published As

Publication number Publication date
SE9800869D0 (en) 1998-03-17
CN1281622A (en) 2001-01-24
WO1999021391A2 (en) 1999-04-29
AU9659198A (en) 1999-05-10
SE9800869L (en) 1999-04-21
EA200000434A1 (en) 2000-12-25
WO1999021391A3 (en) 1999-06-24
EA002245B1 (en) 2002-02-28

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