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Mobile Communication Method and System for Performing Carrier Aggregation
| Content Provider | The Lens |
|---|---|
| Related Links | https://www.lens.org/lens/patent/010-812-188-421-137/frontpage |
| Language | English |
| Publisher Date | 2017-12-27 |
| Access Restriction | Open |
| Alternative Title | Mobilkommunikationsverfahren Und System Zur Durchführung Von Trägeraggregation Système Et Procédé De Communication Mobile Et Pour Effectuer Une Agrégation De Porteuses |
| Content Type | Text |
| Resource Type | Patent |
| Date Applied | 2014-10-30 |
| Agent | Hoffmann Eitle |
| Applicant | Ntt Docomo Inc |
| Application No. | 14858570 |
| Claim | A mobile communication method for performing carrier aggregation by using a first base station and a second base station, comprising: a step A in which the first radio base station (MeNB) transmits (S1003), when a first bearer has been set between a mobile station (UE) and the first radio base station, to the mobile station an information element that instructs to add a second bearer between the second radio base station (SeNB) and to modify settings of the first bearer; and a step B in which the mobile station, according to the information element, modifies (S1004) the settings of the first bearer and adds (S1005) the second bearer to receive a downlink signal via the first bearer and the second bearer and transmit an uplink signal via either the first bearer or the second bearer, wherein the step B includes, upon receiving an existing information element "DRB-ToAddMod" as the information element and when "PDCP-config" has been set in the information element "DRB-ToAddMod", the mobile station modifying the settings of the first bearer and adding the second bearer to transmit the uplink signal via the second bearer. The mobile communication method as claimed in Claim 1, wherein the step A includes the first radio base station transmitting the information element to the mobile station by "RRC Connection Reconfiguration". A mobile communication system in which a mobile station (UE) is capable of performing a carrier aggregation by using a first radio base station (MeNB) and a second radio base station (SeNB), wherein when the carrier aggregation is being performed, PDCP layer function corresponding to a bearer for downlink is set in only the first radio base station, and PDCP layer function corresponding to a bearer for uplink is set in either the first radio base station or the second radio base station, the first radio base station (MeNB) is configured to transmits, when a first bearer has been set between a mobile station (UE) and the first radio base station, to the mobile station an information element that instructs to add a second bearer between the second radio base station (SeNB) and to modify settings of the first bearer; and the mobile station, according to the information element, is configured to modify the settings of the first bearer and add the second bearer to receive a downlink signal via the first bearer and the second bearer and transmit an uplink signal via either the first bearer or the second bearer, wherein upon receiving an existing information element "DRB-ToAddMod" as the information element and when "PDCP-config" has been set in the information element "DRB-ToAddMod", the mobile station is configured to modify the settings of the first bearer and adding the second bearer to transmit the uplink signal via the second bearer. The mobile communication system as claimed in Claim 3, wherein the PDCP layer function performs a security process. The mobile communication system as claimed in Claim 3 or 4, wherein the PDCP layer function performs RoHC process. The mobile communication system as claimed in Claim 3, wherein the mobile station associates setting contents related to the bearer for uplink with either the first radio base station or the second radio base station. |
| CPC Classification | WIRELESS COMMUNICATION NETWORKS |
| Extended Family | 019-299-097-213-693 048-377-481-785-250 147-607-863-848-472 010-812-188-421-137 102-626-566-472-502 052-473-362-590-252 067-551-140-787-987 148-486-898-636-240 002-790-389-243-117 141-567-111-274-590 |
| Patent ID | 3065490 |
| Inventor/Author | Hapsari Wuri Andarmawanti Takahashi Hideaki Uchino Tooru |
| IPC | H04W72/04 H04W76/02 |
| Status | Active |
| Simple Family | 019-299-097-213-693 067-551-140-787-987 010-812-188-421-137 102-626-566-472-502 147-607-863-848-472 052-473-362-590-252 148-486-898-636-240 048-377-481-785-250 002-790-389-243-117 141-567-111-274-590 |
| CPC (with Group) | H04W72/27 H04W72/23 H04W76/10 H04W72/04 |
| Issuing Authority | United States Patent and Trademark Office (USPTO) |
| Kind | Patent/Patent 1st level of publication/Inventor's certificate |
