GB2448481A - Dual Mode Mobile Communications Device and its Operation in Diversity Modes. - Google Patents
Dual Mode Mobile Communications Device and its Operation in Diversity Modes. Download PDFInfo
- Publication number
- GB2448481A GB2448481A GB0701704A GB0701704A GB2448481A GB 2448481 A GB2448481 A GB 2448481A GB 0701704 A GB0701704 A GB 0701704A GB 0701704 A GB0701704 A GB 0701704A GB 2448481 A GB2448481 A GB 2448481A
- Authority
- GB
- United Kingdom
- Prior art keywords
- msrd
- mobile device
- mode
- network
- mobile
- 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.)
- Withdrawn
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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/0871—Hybrid systems, i.e. switching and combining using different reception schemes, at least one of them being a diversity reception scheme
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
-
- H04Q7/3268—
-
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
-
- 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
- H04B7/12—Frequency diversity
Description
A METHOD OF COMMUNICATION
This invention relates to a method of communication between a mobile device and a network, in particular for mobile devices capable of operating in both mobile station receive diversity (MSRD) mode and downlink dual carrier (DLDC) mode, whether at the same time, or at different times.
These modes of operation are illustrated in Figs. I and 2. MSRD is a technique which combines two received versions of the same transmit sizna1, fc 18, 19, sent from transmitter 17 and in this example, received on two antennas at a mobile 20, to improve the performance of the MSRD mobile 20, specifically, by reducing the l)lDbability that a block of data is received with errors after decoding. This is a new feature in general packet radio service (GPRS)/enhanced data rates for global system for mobile communication (GSM) evolution (EDGE) radio access networks (RAN) which has only recently been standardised. A means of signalling to the network that the mobile is capable of MSRD has been standardised, and the required performance of a mobile operating with MSRD active has also been agreed. hut other aspects of its operation arc still under discussion DLDC mobiles 23, can receive data on two carriers fcl 21 and fc2 23 from a transmitter 17. simultaneously and this has also been standardised recently as part of Rel-7 enhancements for GERAN.
Compared to a mobile which is not capable of either MSRD or DLDC, a mobile which supports either of these features requires sonic additional functionality.
However, the additional capabilities required (relative to a mobile which supports neither) are similar for both of these functions, since both features require the mobile to receive two separate signals (two versions of the same signal, in the case of MSRD. or two separate signals -one on each carrier -in the case of DLDC). To support MSRD and DLDC simultaneously, four separate signals must be received (two versions of each of the signals on each carrier). As the number of signals which are to be simultaneously received increases, the functionality (and therefore the size and cost) of the mobile increases. It is likely that most implementations of mobile stations will not allow use of DLDC and MSRD at the same time although, as stated above, it is theoretically not impossible to do so. In many cases, downlink resources arc allocated dynamically. This means that currently, the mobile station must receive the signal on both downlink carriers simultaneously (and therefore may not he able to use MSRI)), even ii data for the mobile is sent on one, or none, of the carriers.
Furthermore, a benefit for the mobile in not activating MSRI). if it is not necessary, e.g. if the current receiver performance is acceptable, is that battery consumption in [lie mobile is reduced.
However, there is flO mechinism for the network to signal to the mobile that it shouki use MSRI) at any particular time, nor is there is an indication from the mobile to the network that it is using MSRD.
In accordance with a first aspect of the present invention, a method of operating a mobile device, wherein the mobile device is adapted for operation in downlink dual carrier, DLDC, mode or mobile station receive diversity, MSRD, mode either simultaneously, or serially comprises switching MSRD mode on or off in response to one of radio conditions or dynamic network indications.
Prefirably, the mobile operates MSRD on a single specified carrier.
In accordance with a second aspect of the present invention, a method of communicating between a network aid a mobile device, wherein the mobile device is adapted for operation in downlink dual carrier, DLDC, mode or mobile station receive diversity, MSRD, mode either simultaneously, or serially comprises sending a notification from the network to the mobile device that certain information will be sent on only a single specified carrier.
Preferably, the certain information comprises at least one of control information and data retransrnissions.
Preferably, an identity of the single specified carrier is notified to the mobile device in advance.
Preferably, the identity of the specified carrier is notified in an assignment message.
Preferably, the mobile device operates MSRD using the single specified carrier.
Preferably, the mobile device indicates to the network that MSRD is enabled.
Preferably, the mobile device further provides an indication that DLDC and MSRD mode are in use simultaneously.
Preferably. whilst operatin2 in DLDC mode, the network ceases to send on one carrier.
Preferably, the network advises the mobile device to switch to MSRD mode.
Preferably, the network indicates to the mobile device in one radio block period that it should operate DLI)C mode in a subsequent radio block period.
Preferably. the network indicates to the mobile device in one radio block period that ii should operate MSRD mode for a subsequent N radio block periods.
in accordance with a third aspect of the present invention, a method of communication between a mobile device and a network, wherein the mobile device is adapted for operation in downlink dual carrier mode, DLDC, or mobile station receive diversity mode, MSRD. either simultaneously, or serially comprises sending from the mobile device to the network, an indication that the mobile device is using MSRD mode.
Preferably, the indication is included in a packet acknowledgement message.
Preferably, the mobile device further provides an indication that DLDC and MSRD mode are in use simultaneously.
An example of a method of communication between a niobile device and a network according to the present invention will now be described with reference to the accompanying drawings in which: Figure 1 shows the operation of a mobile device in MSRD mode: Figure 2 shows the operation of the mobile device in DLDC mode; Figure 3 is a block diagram of a typical system in which the method of the present invention is applied: Figure 4 illustrates a change from DLDC to MSRD in accordance with the present invention; Figure 5 illustrates notification of the use of MSRD in accordance with the present invention; Figure 6 illustrates simultaneous use of DLDC and MSRD in accordance with the method of the present invention; Figure 7 illustrates dynamic indication of MSRI) in accordance with the method of the present invention and, Figure 8 shows a typical burst of data sent on the air interface in a GSM/EDGF.
network.
The performance of the downlink is enhanced if the mobile which is not capable of supporting DLDC and MSRD simultaneously is able to know when it must enable DLI)C, and when it can enable NISRI) (i.e. when data is being sent to the mobile on one carrier only). In particular, it is beneficial if the use of MSRD can he ensured to maxirnise the probability of receiving important control information, such as handover commands, or assignment messages.
The lack of indication that the mobile device is using MSRD is a problem because then the network is not sure whethei; or not, the receive performance of a mobile device is, or is not, based on the mobile using MSRD. In particular. this makes it impossible for the network to estimate the receive performance of a mobile, if it were not using MSRD, particularly, hut not limited to, the case where this is because the mobile is using DLDC. An example of the consequences of this limitation is that if the mobile device reports good reception quality (i.e. has a low probability of decoding frames unsuccessftillyj and is using MSRD, then if the network makes a resource assignment which requires the mobile to use DLDC and so probably not use MSRD, then the reception quality at the MS may deteriorate significantly, in the worst case leading to a dropped call.
If the network is aware of both the received quality and the mode of operation of the mobile device, i.e. whether it is MSRD enabled or MSRD disabled, then the network can make better decisions about link adaptation, handover and further resource assignments Without the present invention, the network would have to base decisions such as link adaptation, i.e. choosing the correct modulation and coding scheme; handover, i.e. handing the mobile over to another cell; and resource allocation etc., on just the signal quality reported by the mobile device and these decisions may turnout to be sub-optimal if the state of operation of the mobile (MSRD enabled! MSRD disabled) changes. Although the MS capability is known to the network, it is not clear whether MSRD is switched on, or not, at that particular instance.
Similarly, even for non L)LDC operations, the network may find it hard to perform link adaptation on the downhink and/or determine whether a handover should occur, if the MS can autonomously enable, or disable the MSRD function without informing the network. If the network is aware of whethei; or not MSRD is being used, then it can take this into account. The problems addressed by the present invention arise from the recent, partial, standardisation of MSRD and DLDC.
Fig.3 illustrates a typical system in which a base station I of a network communicates with a number of mobile devices, or mobile stations, M I, M2, M3, M4 in different states of operation. The different forms of communication are illustrated in Figs. 4 to 7. Fig. 4 illustrates changing from dual carrier to use of a single carrier for important control information, such as handover commands and/or rctransmjssjons.
The single carrier can be pre-determined, or determined dynamically.
The mobile device Ml is receiving on the downlink 2 an assignment 3 which requires the mobile to use L)LDC. If the channel quality between the base station 1 of the network and the mobile M I degrades rapid]y, then the mobile may not he able to enable MSRD, because the assignment requires the mobile to use DLDC. This prevents the mobile improving its likelihood of receiving important control information correctly. In this situation, if the mobile fyi I has a I)LDC assignment, the network always sends 4 important control informatior such as handover commands, or new assignment messages, etc., on a specified carrier, which is one of the two carriers in the I)LDC mode. The mobile, on determining that its channel quality is degrading may.
without necessarily informing the network, cease receiving on the non-specified carrier.
and activate MSRD, using only the specified carrier. In this way, it is guaranteed that any control infonnation sent by the network will be received with a high probability by the mobile.
The specified carrier can be pre-specified in the standard, statically e.g. on the first carrier'; on one carrier as defined in the various assignment messages, or when using dual transfer mode (DTM), the carrier can he specified as the one on which the CS tinieslot is located. Alternatively, the carrier may be specified semi-statically, in the assignment message.
Furthermore, the mobile may subsequently inform the network of hr change to MSRD. e.g. by sending a message 5, such as an ACKINACK message, on the uplink 6, indicating that the mobile MI has enabled MSRD on the single sped lied carrier.
Another improvement when the network has the knowledge of such a rearrangement is that the network can optirnise the performance of an acknowledged mode temporary block flow (TBF) which spans across two carriers by sending 6 re-transmissions of data blocks on the nominated carrier, as this makes it possible for the mobile to receive these blocks, with higher probability, if it has switched to using N'ISRD.
In order to help the network perform link adaptation better, the present invention provides for the mobile device to inform the network when it is using MSRD.
on a dynamic basis. In Fig. 5, a mobile device M2 indicates 7 to the base station I that it is operating MSRD. As an example. t1 indication may be included in packet acknowledgement messages, such as enhanced GPRS (EGPRS) Packet Downlink Ack/Nack messages. The benefit of this is that it gives the network a better understanding of the quality of the radio channel between itself and the mobile. This a1lo the network to make improved decisions regarding the appropriate modulation and coding scheme (MCS) to he used, and whether or not a handover should he initiated towards another cell. For example, if the block error rate is quite high, but MSRD is not being used, the network knows that the mobile could continue to operate in this cell by activating MSRI). In this case the network may choose to send an indication 8 from the base station I to the mobile M2 to switch to MSRD.
Alternatively, if the block error rate is quite high and MSRD is being used, the network may choose to initiate a handover towards another cell.
Since MSRD and IDC are likely to be mutually elusive for most mobile station implementations, because of the component duplication and corresponding size and power constraints, such an indication of whether, or not MSRD is active gives the network information as to how well the mobile is likely to perlbrm if it were to make an assignment which did require the mobile to use DLDC (and therefore would not allow MSRD to be used).
Alternatively, in the case where MSRD and DLDC are not exclusive, as shown in Fig. 6 due to the implementation of tF mobile, this can be indicated to the network.
If a dual carrier assignment 9 is ongoing, the mobile M2 can indicate 10 to the base station of the network that it is receiving blocks on both carriers and using MSRD.
This also removes the need to add an extra bit in the mobile capability indications, which are already quite crowded, with little free space. The mobile needs to indicate explicitly that it is still using DLDC and MSRD, and had not, for example, abandoned one carrier. The network is unlikely to track which blocks are sent on which carrier, so the indication from the mobile indicates DLDC yes/no, plus MSRI) yes/no.
Another feature is that the network signals dynamically to the mobile device, in advance, indicating when the network will send data on one carrier only. In Fig.7, the mobile device M4 receives an indication 11 from the base station I that the network is sending data on one can-icr only. If there is a change in the preferred single specified carrier, then tile base station sends further update indications 12. 13. The identity of the one specified carrier on which data will be sent can he signalled dynamically, so that it can change during tile course of a connection, or it can be semi-statically indicated to the mobile, e.g. within a resource assignment message. Alternatively, the identity may he implicitly indicated, e.g. as the carrier described first in an assignment message, or the carrier on which the CS timeslot is present in case ot DTM.
Therefore, it is not necessary that both the fact that only one carrier will be used and the identity of the carrier to he used is signalled: only the former need he dynamically indicated.
There arc many possible ways to dynamically signa] that the MS need only receive Ofl one carrier. When downlink dual carrier assignment is made, by default and unless indicated otherwise by the network, or autonomously determined as described above, the mobile continues to be in downlink dual carrier mode of operation. This guarantees that the whole process of switching between MSRD and downlink dual carrier is fail safe, since if the mobile does riot detect the indication that a single carrier is to be used, then the mobile continues receiving on both carriers.
The network may indicate in the previous block period whether or not reception on the two downlink carriers is necessary in tl subsequent radio block period. This indication can he done using physical layer signalling, as illustrated with respect to the example data burst shown in Fig. 8. This comprises encrypted data bits 14. stealing flags IS and training sequence bits 16. The indication may he provided for instance using tile stealing flags 15, or a new bit in the header can be used for this purpose. An alternative is that the network explicitly signa the total number of downlink blocks on which the MS may skip reception on a given downlink carrier. To do this, more than one bit is needed for signalling. Bits in the header of the previous block can he used for this purpose, or a setting of the stealing flags is used to indicate a given number of time division multiple access (TDMA) frames in which the MS can skip reception on one of the carriers. Another option is to provide an indication to skip reception on one carrier, such that nothing is transmitted on that carrier for not just one, hut for N' radio block periods where N' has been negotiated previously, for example during the assignment.
The present invention maximises the possibility for the mobile to use MSRD, even when it has a DLDC assignment, thereby maxirnising the probability of receiving the data correctly. The invention also allows the mobile to move to using MSRD on a single carrier, even when it has a DLDC assignment, knowing that important control information (handovers, etc.) and/or retransmissions of data will he sent Ofl that carrier.
A further advantage is thu the invention improves the link adaptation used by the network when the mobile is MSRD-capahlc, by indicating to the network when MSRD is being used.
Claims (16)
- I. A method of operating a mobile device, wherein the mobile device is adapted for operation in downlink dual can-icr. L)LDC, mode or mobile station receive diversity. MSRD. mode either simultaneously, or serially: the method comprising switching MSRD mode on or off in response to one of radio conditions or dynamic network indications.
- 2. A method according to claim I. wherein the mobile operates MSRD on a single specified carrier.
- 3. A method of communicating between a network ard a mobile device, wherein the mobile device is adapted for operation in downlink dual catTier, DLDC, mode or mobile station receive diversity. MSRD, mode either simultaneously, or serially: the method comprising sending a notification from the network to the mobile device that certain information will be sent on only a single speci lied cart-icr.
- 4. A method according to claim 3. wherein the certain information comprises at least one of control information and data retransmissions.
- 5. A method according to any of claims 2 to 4, wherein an identity of the single specified carrier is notified to the mobile device in advance.
- 6. A method according to any of claims 2 to 5, wherein the identity of the specified catTier is notified in an assignment message.
- 7. A method according to any of claims 3 to 6, wherein the mobile device operates MSRD using the single specified carrier.
- 8. A method according to any preceding claim, wherein the mobile device indicates to the network that MSRD is enabled.
- 9. A method according to claim 8, wherein the mobile device further provides an indication that DLDC and MSRD mode arc in use simultaneously.
- 1 0. A method according 10 any of clainìs 3 to 9, wherein, whilst operating in 1)LDC mode, the network ceases to send on one catTier.
- 11. A method according to any of claims 3 to 10, wherein the network advises the mobile device to switch to MSRD mode.
- 12. A method according to any of claims 3 to 9, wherein the network indicates to the mobile device in one radio block period that it should operate DLDC mode in a subsequent radio block period.
- 13. A method according to any of claims 3 to 9, wherein the network indicates to IS the mobile device in one radio block period that it should operate MSRD mode for a subsequent N radio block periods.
- 14. A method of communication between a mobile device and a network, wherein the mobile device is adapted for operation in downlink dual carrier mode, DLDC, or mobile station receive diversity mode, MSRD. either simultaneously, or serially; the method comprising sending from the mobile device to the network, an indication that the mobile device is using MSRD mode.
- 15. A method according to claim 14, wherein the indication is included in a packet acknowledgement message.
- 16. A method according to claim 14 ordain-i 15, wherein the mobile device further provides an indication that L)LDC and MSRD mode are in use simultaneously.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0701704A GB2448481A (en) | 2007-01-30 | 2007-01-30 | Dual Mode Mobile Communications Device and its Operation in Diversity Modes. |
| PCT/EP2008/050444 WO2008092745A1 (en) | 2007-01-30 | 2008-01-16 | A method of communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0701704A GB2448481A (en) | 2007-01-30 | 2007-01-30 | Dual Mode Mobile Communications Device and its Operation in Diversity Modes. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0701704D0 GB0701704D0 (en) | 2007-03-07 |
| GB2448481A true GB2448481A (en) | 2008-10-22 |
Family
ID=37872991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0701704A Withdrawn GB2448481A (en) | 2007-01-30 | 2007-01-30 | Dual Mode Mobile Communications Device and its Operation in Diversity Modes. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2448481A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2472978A (en) * | 2009-08-24 | 2011-03-02 | Vodafone Plc | A multi-antenna receiver is switched between receiver diversity mode and carrier aggregation mode on the basis of network or/and terminal parameters |
| WO2011036831A1 (en) | 2009-09-25 | 2011-03-31 | Sony Corporation | Communication system, method, base station, and communication device |
| US9301130B2 (en) | 2011-11-07 | 2016-03-29 | Intel Deutschland Gmbh | Base station, method for controlling a communication terminal, communication terminal and method for operating a communication terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001059945A1 (en) * | 2000-02-07 | 2001-08-16 | Ericsson Inc. | Power conservation method for mobile communications device with two receivers |
| US20040219959A1 (en) * | 2003-05-01 | 2004-11-04 | Ali Khayrallah | Multiple antenna receiver |
| US20050197080A1 (en) * | 2004-03-05 | 2005-09-08 | Fatih Ulupinar | Method and apparatus for receive diversity control in wireless communications |
| US20060221894A1 (en) * | 2005-04-04 | 2006-10-05 | Lorenzo Casaccia | Method and apparatus for management of multi-carrier communications in a wireless communication system |
-
2007
- 2007-01-30 GB GB0701704A patent/GB2448481A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001059945A1 (en) * | 2000-02-07 | 2001-08-16 | Ericsson Inc. | Power conservation method for mobile communications device with two receivers |
| US20040219959A1 (en) * | 2003-05-01 | 2004-11-04 | Ali Khayrallah | Multiple antenna receiver |
| US20050197080A1 (en) * | 2004-03-05 | 2005-09-08 | Fatih Ulupinar | Method and apparatus for receive diversity control in wireless communications |
| WO2005084379A2 (en) * | 2004-03-05 | 2005-09-15 | Qualcomm Incorporated | Method and apparatus for receive diversity control in wireless communications |
| US20060221894A1 (en) * | 2005-04-04 | 2006-10-05 | Lorenzo Casaccia | Method and apparatus for management of multi-carrier communications in a wireless communication system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2472978A (en) * | 2009-08-24 | 2011-03-02 | Vodafone Plc | A multi-antenna receiver is switched between receiver diversity mode and carrier aggregation mode on the basis of network or/and terminal parameters |
| WO2011036831A1 (en) | 2009-09-25 | 2011-03-31 | Sony Corporation | Communication system, method, base station, and communication device |
| EP2471326A1 (en) * | 2009-09-25 | 2012-07-04 | Sony Corporation | Communication system, method, base station, and communication device |
| EP2471326A4 (en) * | 2009-09-25 | 2015-11-11 | Sony Corp | Communication system, method, base station, and communication device |
| CN105656531A (en) * | 2009-09-25 | 2016-06-08 | 索尼公司 | Communication system, method, base station, and communication device |
| US9831990B2 (en) | 2009-09-25 | 2017-11-28 | Sony Corporation | Communication system, method, base station, and communication device |
| CN105656531B (en) * | 2009-09-25 | 2019-04-26 | 索尼公司 | Communication system, communication means, base station and communication equipment |
| US9301130B2 (en) | 2011-11-07 | 2016-03-29 | Intel Deutschland Gmbh | Base station, method for controlling a communication terminal, communication terminal and method for operating a communication terminal |
| DE102012109444B4 (en) * | 2011-11-07 | 2021-04-29 | Intel Deutschland Gmbh | Base station, method for controlling a communication terminal, communication terminal and method for operating a communication terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0701704D0 (en) | 2007-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2008092745A1 (en) | A method of communication | |
| US10136417B2 (en) | Method and apparatus for selecting and reselecting an uplink primary carrier | |
| US8660107B2 (en) | Uplink HARQ feedback channel design for carrier aggregation in OFDMA systems | |
| EP2765728B1 (en) | Improved L1 control signaling for UTRAN HSDPA | |
| JP4584989B2 (en) | Method and system for providing autonomous retransmission in a wireless communication system | |
| CN113259913A (en) | Method and apparatus for device-to-device side link transmission scheduling in wireless communication system | |
| US20120088533A1 (en) | Resource allocation and encoding for channel quality indicator (cqi) and cqi collided with uplink acknowledgment/negative acknowledgment | |
| EP2438702B1 (en) | Uplink harq feedback channel design for carrier aggregation in ofdma systems | |
| US20090175369A1 (en) | Mobile station and a base station | |
| JP4460173B2 (en) | Asymmetric data transmission for use in multi-modulation environments | |
| US7957345B2 (en) | Adaptive HARQ in an OFDMA based communication system | |
| KR20080065890A (en) | Method and apparatus for allocating and signalling ack/nack channel resources in wireless communication systems | |
| EP1719281A1 (en) | Method of controlling data transmission, radio system, packet control unit, and remote network element | |
| WO2018058922A1 (en) | Signal transmission method and device | |
| JPH06244791A (en) | Mobile radio communication system | |
| KR20220131195A (en) | Method and apparatus of handling periodic sidelink resources and discontinuous reception for sidelink communication in a wireless communication system | |
| KR101237639B1 (en) | Control channel communications in a cellular communications network | |
| CN116114320A (en) | Method and user equipment for hybrid automatic repeat request process operation in non-terrestrial networks | |
| US20040095953A1 (en) | Radio terminal, module for such a unit and method for transmitting associated control channels | |
| WO2014163140A1 (en) | Base station and communication control method | |
| GB2448481A (en) | Dual Mode Mobile Communications Device and its Operation in Diversity Modes. | |
| KR20100034666A (en) | Mobile station for handling abnormal case | |
| WO2022265824A1 (en) | Joint relaying of a transport block | |
| JP2012213142A (en) | Method of controlling receive diversity for battery lifetime improvement and related communication device | |
| CN101023615A (en) | Coding selection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) |
Free format text: REGISTERED BETWEEN 20090212 AND 20090218 |
|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |