CN1806458A - Reverse link rate control method and system in a mobile communication network - Google Patents

Abstract

The reverse link rate control method and apparatus provide first rate control commands as basic rate control for general, ongoing control of the reverse link rate of one or more mobile stations. These first rate control commands include, for example, periodically transmitted common rate control commands generated based on the reverse link load, used to control the reverse link rate of mobile stations whose service requirements do not currently demand predetermined target reverse link rate control. The exemplary method and apparatus also provide second rate control commands on demand, sent to the target mobile station to meet the specific quality of service requirements of each mobile station or group of mobile stations. Supplementary rate control channels can be dynamically allocated and released to the target mobile station to provide supplementary rate control on demand.

Description

Method and system for reverse link rate control in mobile communication network

related application

This application claims priority under 35 U.S.C. § 119(e) to the following U.S. provisional applications: Serial No. 60/479014, filed June 17, 2003 and Serial No. 60/4, filed July 14, 2003 486,938 applications. This application also claims under 35 U.S.C. §120 of the U.S. Utility Patent Application and assigned serial number, filed January 9, 2004, entitled "Generalized Rate Control for Wireless Communication Networks" Priority of application number 10/755104. All of these applications are expressly incorporated herein by reference in their entirety.

Background of the invention

The present invention relates generally to controlling the reverse link rate of a mobile station operating in a wireless communication network.

Current and evolving wireless communication networks provide digital channels configured with a wide range of available data rates. For example, networks based on the cdma2000 or Wideband-CDMA (W-CDMA) standards provide configurable data rate channels on both the forward and reverse links. Many types of communications are subject to transmission over variable data rate channels, although the particular application being run by a given user may dictate a minimum or maximum data rate.

For example, a given mobile station may engage in potentially lengthy data transmissions, such as transferring files using the File Transfer Protocol (FTP), or sending e-mails with attachments, and the like. While the higher data rates in these examples represent a user convenience in that there is less time to wait for the transfer to complete, lower data rates can also be used for such applications. A lower data rate may be preferable if, for example, there are more "priority" users to send data, or network load conditions are high.

Specifically, the data rates of mobile stations operating within a given service area (sector) of a wireless network may have their individual or collective reverse link data rates controlled according to reverse link loading conditions. Load conditions may be represented by receiver noise measurements over temperature at the corresponding radio base stations, or may be assessed using other metrics such as number of connected users, total reverse link throughput, etc.

Regardless, conventional methods of rate control typically provide limited options for assigning mobile stations to a common rate control channel, a group rate control channel, or a dedicated rate control channel for each mobile station. In general, the rate control mechanism for a given mobile station or a given group of mobile stations reflects the relationship between maintaining a manageable level of rate control signaling overhead on the sector's forward link and maintaining adequate reverse link throughput across different mobile stations. A compromise between volumes.

Contents of the invention

The present invention includes a method and apparatus for providing reverse link rate control in a wireless communication network, wherein the network sends basic rate control commands, such as common rate control commands, to one or more mobile stations and also sends Some specific mobile stations among them or a specific group of mobile stations among them send supplementary rate control commands. In this way, the network can continuously provide general rate control, such as common rate control, for a given mobile station; Quality of service requirements for a particular group of mobile stations.

Accordingly, an exemplary method of controlling reverse link rates for mobile stations in a wireless communications network includes sending basic rate control commands, such as common rate control commands, to provide basic reverse link rate control for one or more mobile stations, and Supplementary rate control commands need to be sent to the target mobile station of the one or more mobile stations to replace the basic reverse link rate control at the target mobile station. In this way, common or shared rate control commands can be sent continuously to a group of mobile stations, such as all users in a given radio sector, and target rate control commands can be sent discontinuously and on demand among users Some specific users or specific user groups among the users.

For example, the targeted rate control commands may be formulated as mobile station specific commands based on mobile station specific quality of service requirements. Of course, a given mobile station may run multiple service instances, and may generate supplementary rate control commands targeted to meet the service needs of a particular service instance, or at least ensure that the needs of the most demanding service instances are met.

In another exemplary embodiment of the present invention, a method of controlling a reverse link rate of a mobile station in a wireless communication network includes: sending a first rate control command for a general reverse link rate of one or more mobile stations control, and as needed, sending a second rate control command for specific reverse link rate control of at least one of the one or more mobile stations while continuing to send the first rate control command. Sending a first rate control command may include sending a common rate control command for a group of mobile stations, and sending a second rate control command may include sending a specific rate control command temporarily as needed to support a specific rate control command among the one or more mobile stations. Special quality of service requirements for mobile stations.

Accordingly, an exemplary base station system includes one or more reverse link rate control circuits configured to: generate first rate control commands for general reverse link link rate control, and generating a second rate control command as needed for specific reverse link rate control of at least one of the one or more mobile stations while continuing to send the first rate control command.

An exemplary base station system may thus include a radio base station configured to transmit first and second rate control commands, wherein the first rate control command provides general or basic rate control for one or more mobile stations, and wherein The second rate control command provides a predetermined target rate control for each mobile station or group of mobile stations according to the traffic needs of the target mobile station. The first command may be sent on a first rate control channel, such as a sector or group specific common rate control channel, and the second rate control command may be sent on one or more second rate control channels as desired. Note that individualized second rate control commands can be formulated for each mobile station or group of mobile stations among one or more target mobile stations, and a multiplexed or dedicated rate control channel can be used to send a message to each such mobile station Or the mobile station group provides its corresponding second rate control command.

Of course, the present invention is not limited to the exemplary embodiments described above. Those skilled in the art will recognize other features and advantages after reading the following detailed description and viewing the accompanying drawings.

Introduction to the drawings

Figure 1 is a schematic diagram of a wireless communication network configured in accordance with one or more embodiments of the present invention.

Figure 2 is a schematic diagram of details of an exemplary radio base station and base station controller.

Fig. 3 is a schematic diagram of an exemplary primary (primary) and supplementary (secondary) rate control in accordance with the present invention.

4 is a schematic diagram of exemplary processing logic to provide auxiliary rate control to mobile stations as needed.

5 is a schematic diagram of an exemplary primary/secondary rate control channel and exemplary service requirement feedback information as established between a base station and a mobile station in accordance with the present invention.

Detailed Description of the Invention

Figure 1 shows an exemplary wireless communications network 10 configured to provide reverse link rate control in accordance with the present invention. Network 10 is presented in simplified form to facilitate discussion, but those skilled in the art will appreciate that network 10 may include entities not shown, and that entities shown may contain additional complexities. Furthermore, it should be understood that although in one or more exemplary embodiments network 10 comprises a cdma2000 wireless communication network, the invention is not so limited and network 10 may be based on other standards such as wideband CDMA.

Based on the foregoing, network 10 communicatively connects mobile station 12 to one or more external networks 14, such as the Internet or other Public Data Network (PDN) and/or Public Switched Telephone Network (PSTN). In the illustrative simplified diagram, network 10 includes a radio access network (RAN) 16 that is communicatively connected to one or more core networks (CN) 18, which in turn provide connectivity with external networks 14 communication. The RAN 16 includes one or more base station systems (BSS), each of which includes a base station controller (BSC) 30 and one or more associated radio base stations (RBS) 32. Those skilled in the art will understand that other BSS configurations are possible, for example BSC logic may be fully or partially transferred to the RBS level, and the present invention contemplates all such variations.

In at least one embodiment, network 10 provides basic continuous rate control to one or more mobile stations, and supplementary discontinuous rate control to one or more of those mobile stations as needed. Here, "continuously" only means that the rate control commands are generally repeatedly sent without prolonged interruptions. On the other hand, "discontinuous" means that rate control command transmissions can be "bursty" in that they are only sent to a particular mobile station when needed to replace or modify the basic rate control. Thus, a typical mobile station may rely on the general rate control provided by basic rate control commands until its rate control needs require the use of mobile-specific or group-specific rate control, in which case these mobile stations may be assigned to Auxiliary rate control channel.

Keeping this rate control in mind, it will be appreciated that each RBS 32 may provide radio communications over one, two, or more sectors: the RBSs 32 shown are each on three sectors denoted S1, S2, and S3 Coverage is provided above. The term "sector" as used herein should be given a broad meaning and should therefore be understood to mean a defined radio coverage area. In an exemplary definition, the term sector denotes an intersecting area of a given radio carrier (frequency) with a given geographical coverage area. Thus, the illustrated RBS 32 can utilize two or more radio carriers to provide overlapping sectors. In any case, such details are not essential to an understanding of the invention. However, in connection with the present invention, those skilled in the art should understand that the rate control method disclosed herein can be adjusted as needed within a sector and between sectors.

Figure 2 shows an exemplary base station or BSS, which includes a BSC 30 and an RBS 32, represented in simplified functional units for clarity. It should be understood that a BSC 30 is typically configured to support multiple RBSs 32, and that each RBS 32 may be configured to support multiple radio sectors.

In any event, the BSC 30 includes control processing circuitry 34, such as one or more signal processors, microcontrollers, etc., configured to provide call control logic for establishing, maintaining and tearing down calls associated with each call supported by the RBS 32. The logical connection associated with voice and/or data calls originating therefrom is terminated at the mobile station 12 and also includes interface circuitry for communicatively connecting to the RBS 32, such as a backhaul interface for E1/T1 lines, microwave, etc. (backhaul interface) circuit. Interface circuitry 36 may include additional, possibly different, interfaces for communicating with CN 18, such as with a mobile switching center (not shown). Furthermore, the BSC 30 may comprise or be associated with a packet control function (PCF) or similar entity providing a radio packet (RP) interface between the packet side of the CN 18 and the RAN 16.

RBS 32 includes forward/reverse link control and signal processing circuitry, collectively referred to herein as processing circuitry 40. The RBS 32 also includes transceiver resources 42 and associated receive/transmit antenna units 44 and 46, respectively; and one or more interface circuits 48 to communicatively couple the RBS to the BSC 30. Exemplary processing circuitry 40 includes one or more signal processors, such as DSP circuitry, microprocessors/microcontrollers, etc.; and associated support circuitry, while transceiver resources 42 include and the modulation/demodulation and encoding/decoding circuitry of the physical layer channel communicating with mobile station 12 on the reverse (receive) link.

According to one or more embodiments of the invention, exemplary rate control may be implemented by configuring hardware, software, or any combination thereof at the BSC 30 and/or at the RBS 32. For example, the processing circuitry 40 of the RBS 32, which may include microprocessor resources as described above, may be configured to provide exemplary primary and supplemental rate control in accordance with the present invention. Additionally, at least some rate control processing may be supported by appropriately configuring processing circuitry 34 at the BSC 30. This shared processing between the BSC and RBS may be particularly suitable when the BSC 30 processes or provides information for rate control adjustments.

Regardless of such implementation details, FIG. 3 shows the BSC 30 and RBS 32 in the context of providing basic and auxiliary reverse link rate control to the mobile station 12. Basic rate control commands may also be referred to herein as "primary" rate control commands, and secondary rate control commands may also be referred to herein as "supplemental" rate control commands.

The illustrated mobile station 12 may receive sector-wide rate control commands as its "primary" rate control commands, and may receive group-specific rate control commands as its "secondary" rate control commands as needed. As an alternative, mobile station 12 may receive group specific rate control commands as its primary rate control commands, and may receive mobile station specific rate control commands as its "secondary" rate control commands as needed. As another alternative, mobile station 12 may receive sector-wide rate control commands as its primary rate control commands, and may receive mobile station specific rate control commands as its "secondary" rate control commands as needed control commands. Of course, other combinations of primary/secondary rate control are contemplated herein.

Considering the next instance that mobile station 12 receives sector-wide rate control commands as its basic reverse link rate control commands, it should be noted that these sector-wide rate control commands may vary according to the The sector's reverse link load generation. RBS 32 and/or BSC 30 may calculate sector loading by measuring receive noise at base station radio receivers over temperature. Alternative methods of measuring reverse link load may be employed, such as by determining total throughput on the reverse link, monitoring user numbers and user types, identifying if a significant number of users in a sector are underserved, etc.

Generally, a common rate control command is generated as a "down" command if, for example, reverse link load conditions are high relative to one or more measured thresholds (measured thresholds may be set relative to base station "failure" probability) , which will cause mobile stations 12 to gradually adjust their rates downward in accordance with those commands. Conversely, if the load is light, the common rate control commands are generated as "up" commands, in which case mobile stations 12 gradually adjust their rates upward in accordance with those commands. In effect, the common rate control command alternates back and forth between up and down commands according to changing load conditions.

Note also that the common rate control command can be generated as a "load indicator", which can be referred to as a "reverse activity bit". According to the rate control command generation method, the base station alters one or more of the transmitted common rate control command bits to reflect changing reverse link loading conditions, and mobile station 12 is configured to process these load indicators accordingly. For example, mobile stations 12 may be programmed to increase their data rate—in accordance with radio conditions and transmit power limitations—in response to receiving an indication of light reverse link load; and to decrease their data rate—in accordance with service requirement constraints, etc.—in response to Heavy reverse link load received indication.

In terms of basic rate control and auxiliary rate control, the basic rate control command can be used to "damp" the rate of a group of users to a lower rate, or to maintain the group at the current rate, and the auxiliary rate control command can be used to press The data rate for some of these specific users needs to be controlled. For example, these specific users are allowed to achieve high data rates according to their specific QoS needs.

For example, support for specific users or groups of users can be prioritized, for example as Gold/Silver/Bronze data users. Thus, the present invention may include a sector control mechanism utilizing configurable tables/functions to implement such prioritization or a scheduling control algorithm that may employ both primary and secondary rate control to prioritize users. In other arrangements, basic/auxiliary rate control may be used to support different QoS requirements for different traffic instances on a mobile station 12 with multiple traffic instances. Such mobile stations 12 may provide feedback to indicate specific traffic instances where high buffer levels, such as "watermark" levels, have been reached. This data, together with power headroom feedback, allows for relative prioritization among mobile stations within a given sector.

Common to the above basic/auxiliary rate control variants and others is that the RBS 32 and/or the BSC 30 may be configured to provide the mobile station 12 with first rate control commands that are continuously sent so that the mobile station 12 receives Considered the "default" rate control command to be followed if no assisted override command is received. These default rate control commands are preferably shared by multiple mobile stations 12 on a group or sector basis, although they need not be shared.

If the default rate control commands are insufficient to meet the quality of service requirements of a particular mobile station 12, supplementary rate control commands are sent as needed. These auxiliary rate control commands thus provide a "burst" rate control channel that can be used to override the default rate control on the mobile station 12 as needed.

As explained below, assignment of a supplemental rate control channel to a mobile station 12 for transmission of a supplementary rate control command may be triggered based on monitoring service requirements and/or feedback from the mobile station 12 . For example, mobile station 12 may be configured to provide buffer level feedback, in which case it sends network 10 information about its reverse link transmit queue. Thus, an excessively long transmit queue on the mobile station 12 can be used as a trigger to allocate a supplementary rate control channel, and a supplementary rate control channel can be sent to the mobile station 12 to allow the mobile station 12 to achieve a higher rate than is available through the default rate control command. higher reverse link data rates.

Of course, as explained later, other forms of feedback and service requirement monitoring can be used to trigger secondary rate control channel assignments as needed to meet mobile-specific as well as group-specific Quality of Service requirements (QoS). Regardless of the particular triggering mechanism employed, Figure 4 shows exemplary processing logic for managing primary and secondary rate control channel assignments.

The process "begins" by assigning a particular mobile station 12 to a basic rate control channel (step 100). Note that this fundamental channel is preferably a shared rate control channel, and thus can carry rate control commands common to the radio sector in which the mobile station 12 is operating, or can carry group-specific rate commands for a given group to which the mobile station 12 is assigned. control commands. Note that group rate control can be used to provide differentiated services based on user classes, such as gold, silver, bronze users, etc.

As detailed in the co-pending application entitled "Generalized Rate Control for Wireless Communication Network" (SN 10/755104) incorporated herein, the basic rate control channel can be time division multiplexed onto another channel. For example, in a cdma2000-based network, one or more Forward Common Rate Control Channels (F-CRCCH) may be multiplexed onto a Forward Common Power Control Channel (F-CPCCH). F-CPCCH generally includes multiple The multiplexed power control bits (PCBs) are used to perform power control on corresponding multiple mobile stations 12 . For example, multiplexing rate control commands onto a power control channel may be based on replacing unused power bits with rate control bits, or based on periodically puncturing one or more power control bits in place of rate control information.

In any case, once the mobile station 12 is assigned to the basic rate control channel, the ongoing service requirements of the mobile station 12 are monitored to determine whether the basic rate control commands are sufficient to satisfy the reverse link service requirements of the mobile station 12 (step 104). Figure 5 illustrates a variety of mobile station to base station feedback mechanisms, one or more of which may be used to logically assess whether the temporary allocation of mobile station 12 to the secondary rate control channel is justified. Such feedback includes, but is not limited to, status indicators, reverse link rate requests, transmit buffer queue information, and transmit power headroom information.

A status indication from mobile station 12 may be used to indicate that mobile station 12 needs to increase its reverse link data rate, while a rate request may be used by mobile station 12 to explicitly request a reverse link rate change. Likewise, transmit buffer queue information may be sent by mobile station 12 as an indication of whether the current reverse link throughput is sufficient for it. Here, the buffer level information may be quantized in order to save bits. For example, the empty to full buffer status continuum may be quantized with, for example, two or three bits to provide a multi-valued buffer level indicator to the base station. Alternatively or additionally, the mobile station 12 may send a transmit power headroom indication to the base station, where such information may be used to determine whether the mobile station 12 currently has sufficient reserved transmit power available to operate with a higher reverse link Road data rate work.

In addition, when the mobile station 12 is running multiple service instances, the quantized buffer level information of any instance or all instances in the multiple service instances can be generated. Quantified buffer levels for multiple service instances may be sent in one report, or in consecutive reports if required.

Any and all such information can thus be used to assess whether temporary assisted rate control is required to meet the reverse link service requirements of mobile station 12 (step 106). If it is determined that supplementary rate control is required, the mobile station is assigned to a supplementary rate control channel (step 108), and a supplemental rate control command is then sent to the mobile station 12 on the supplementary channel (step 110). Assistance orders may be generated based on specific quality of service requirements of the mobile station 12 .

Once the supplementary channel is allocated, traffic conditions/requirements can be monitored to determine if and when the supplementary rate control channel should be released (step 112). For example, the secondary rate control channel may be maintained for mobile station 12 as long as its queue level exceeds a specified threshold, as long as it continues to demand higher reverse link rates, etc. Of course, the logic for maintaining or releasing the secondary rate control channel also depends on higher level considerations, such as the overall reverse link load, whether any other mobile stations 12 or groups of mobile stations 12 have higher traffic priority, etc. .

Once it is determined that the mobile station 12 no longer needs (or requires) the auxiliary rate control, the auxiliary rate control channel allocation is released (step 114). After releasing the secondary rate control channel, mobile station 12 reverts to reverse link rate control provided on the primary rate control channel. Note that where auxiliary rate control commands are provided to several groups of target mobile stations 12, the decision to release the auxiliary rate control commands may be based on the fact that no mobile stations 12 in the groups need auxiliary rate control commands to satisfy their requirements. Determination of business needs.

It should be noted that the mobile station 12 may generally be configured such that the received auxiliary rate control commands may completely override the received primary rate control commands. That is, according to the exemplary embodiment of the processing logic above, the basic rate control commands are persistent, and basic rate control commands will continue to be received in addition to any auxiliary rate control commands being received. Thus, a given mobile station 12 may be specifically configured to follow auxiliary rate control commands during receipt of such commands, and to follow basic rate control commands only when auxiliary rate control is not present. Alternatively, mobile stations 12 may be configured to modify their responses to primary rate control commands, if secondary rate control commands are received, based on these commands. In the latter approach, the effective rate control at a given mobile station 12 will thus include some logical combination of basic rate control and supplementary rate control provided on the basic and supplementary rate control channels.

The above information mentions that the basic rate control channel and the secondary rate control channel may be formed as multiplexed sub-channels on eg a common power control channel. Therefore, the RBS 32/BSC 30 may send the first (basic) rate control command shared by a group of mobile stations 12 on the forward common rate control basic sub-channel (F-CRCFSCH) defined on the F-CPCCH.

Then, for each group of mobile stations 12 or specific mobile stations 12 that require supplementary rate control, the RBS 32/BSC 30 may send a second (supplementary) rate control command on the corresponding forward common rate control supplementary sub-channel (F-CRCSSCH). These secondary rate control channels each carry second rate commands to its respective mobile station 12 or its respective groups of mobile stations 12, and they may also be multiplexed onto a common power control channel. Where multiple common power control channels are used, different primary and secondary rate controls may be transmitted on each of these channels as desired.

Other channels can also be used to provide inventive primary/secondary rate control. For example, the RBS 32/BSC 30 may utilize a given forward grant channel (F-GCH) to provide shared basic rate control commands to a given set of mobile stations 12. It may then utilize any number of further second F-GCHs to provide secondary rate control commands to targeted ones of those mobile stations 12 or groups of targeted mobiles among them. In this context, as in others, it should be understood that rate control commands may include, but are not limited to, explicit rate grants, or increment/decrement commands. Furthermore, it is not necessary that the basic rate control commands and the auxiliary rate control commands are of the same type. For example, a basic rate control command for a given group may be an explicit permission, while secondary rate control commands sent to targeted members of the group may be generated as increment/decrement commands, or as explicit permission commands.

In any case, those skilled in the art should understand that the present invention generally solves the need to meet the bursty QoS requirements on the target mobile station 12 on demand through the temporary allocation of auxiliary rate control, and can utilize various basic/auxiliary channels to realize . Regardless, the present invention reduces signaling overhead by preferably limiting the sending of supplemental rate control commands to those mobile stations 12 whose reverse link service requirements cannot, at least temporarily, be satisfied by the common rate control commands being sent.

Accordingly, the invention is not limited to the illustrative details described above, nor is it limited by the accompanying drawings. Rather, the present invention is limited only by the following claims and their reasonable legal equivalents.

Claims (39)

1. A method of controlling the reverse link rate of a mobile station in a wireless communication network, comprising: sending a first rate control command for general reverse link rate control of one or more mobile stations; and Sending a second rate control command as needed for specific reverse link rate control of at least one of the one or more mobile stations while continuing to send the first rate control command. 2. The method of claim 1, wherein sending the first rate control command comprises sending a common rate control command for a group of mobile stations. 3. The method of claim 2, wherein sending the second rate control command comprises temporarily sending a specific rate control command as needed to support a specific QoS requirement of a specific mobile station among the one or more mobile stations. 4. The method of claim 1, wherein sending a first rate control command comprises sending a common rate control command for a group of mobile stations; and wherein sending a second rate control command comprises sending a mobile station specific rate control command on demand command to supersede the common rate control command at selected mobile stations in the group of mobile stations. 5. The method of claim 1, wherein sending the first rate control command comprises sending a common rate control command for a radio sector of the network based on reverse link loading conditions. 6. The method of claim 5, wherein sending a second rate control command comprises sending a mobile station specific rate control command for a particular mobile station in the radio sector on demand according to mobile station specific service requirements . 7. The method of claim 5, wherein sending a second rate control command comprises sending a group specific rate control command for a specific group of mobile stations in the radio sector on demand according to group specific service requirements . 8. The method according to claim 1, wherein sending the first rate control command comprises sending an increment/decrement rate control command according to reverse link load conditions. 9. The method of claim 8, wherein sending a second rate control command comprises sending a predetermined target rate to one or more specific mobile stations based on service requirements associated with the one or more specific mobile stations. control commands. 10. The method of claim 9, wherein sending a target rate control command to one or more specific mobile stations based on service requirements associated with the one or more specific mobile stations comprises: for each target The mobile station sends a mobile station specific rate control command according to the corresponding mobile station specific quality of service requirement. 11. The method according to claim 1, wherein: sending the second rate control command comprises: for one or more target mobile stations, according to the service quality feedback from the one or more target mobile stations, sending a predetermined Target rate control command. 12. The method of claim 11, wherein sending predetermined target rate control commands based on quality of service feedback from the one or more target mobile stations comprises: receiving from each target mobile station including reverse link feedback of at least one of status information, reverse link buffer level information, and reverse link power headroom information; and utilizing said feedback to generate said intended target rate control commands for respective target mobile stations. 13. The method of claim 1, wherein said first rate control command comprises a basic rate control command providing common reverse link rate control for mobile stations in a given radio sector of said network ; and wherein said second rate control command comprises a supplementary rate control command targeted at a specific mobile station in said given radio sector, and the supplementary rate control command is operable to override said common mobile station at said specific mobile station Reverse link rate control. 14. The method of claim 1, wherein: sending a first rate control command comprises sending the first rate control command on a basic rate control channel; and sending a second rate control command comprises sending the first rate control command over one or more sending the second rate control command on a supplementary rate control channel. 15. The method of claim 1, further comprising: identifying a particular mobile station or a particular mobile station to be targeted for a particular reverse link rate control based on received quality of service feedback from the one or more mobile stations. Taiwan group. 16. The method of claim 15, further dynamically updating those mobile stations identified as requiring specific reverse link rate control in response to changing quality of service feedback from the one or more mobile stations. tower. 17. A base station system comprising one or more reverse link rate control circuits configured to: generating a first rate control command for general reverse link rate control of one or more mobile stations; and A second rate control command is generated as needed for specific reverse link rate control of at least one of the one or more mobile stations while continuing to send the first rate control command. 18. The base station system of claim 17, wherein the one or more reverse link rate control circuits are configured to generate the first rate control command as a common rate control command for a group of mobile stations Order. 19. The base station system according to claim 18, wherein the one or more reverse link rate control circuits are configured to generate specific rate control commands on demand to support specific rate control commands in the one or more mobile stations. Special quality of service requirements for mobile stations. 20. The base station system of claim 17, wherein the one or more reverse link rate control circuits are configured to: generate the first rate control command as a common rate for a group of mobile stations control commands; and generating said second rate control command as needed as a mobile station specific rate control command to supersede said common rate control command at selected mobile stations in said group of mobile stations. 21. The base station system according to claim 17, wherein the one or more reverse link rate control circuits are configured to generate the first rate control command according to the reverse link load condition as the Common rate control commands for the radio sectors of the network described above. 22. The base station system according to claim 21, wherein said one or more reverse link rate control circuits are configured to generate said second rate control command on demand according to mobile station specific service requirements as Mobile station specific rate control commands for specific mobile stations in the radio sector. 23. The base station system according to claim 21, wherein the one or more reverse link rate control circuits are configured to generate the second rate control command on demand according to group-specific service requirements as the Group-specific rate control commands for a specific group of mobile stations in the radio sector. 24. The base station system of claim 17, wherein the one or more reverse link rate control circuits are configured to generate the first rate control command as an incremental / Deceleration rate control command. 25. The base station system of claim 24, wherein said one or more reverse link rate control circuits are configured to generate said second rate based on service requirements associated with one or more particular mobile stations control commands as intended target rate control commands to said one or more specific mobile stations. 26. The base station system of claim 25, wherein the one or more reverse link rate control circuits are configured to generate mobile station specific rate control commands based on corresponding mobile station specific quality of service requirements, The intended target rate control commands are generated for each target mobile station. 27. The base station system of claim 17, wherein said one or more reverse link rate control circuits are configured to generate a predetermined target A rate control command, generating a second rate control command for the one or more target mobile stations. 28. The base station system according to claim 27, wherein the one or more reverse link rate control circuits are configured to: according to the corresponding received reverse link status information, reverse link Feedback of at least one item of buffer level information and reverse link power headroom information generates the predetermined target rate control command for each target mobile station. 29. The base station system of claim 17, wherein the one or more reverse link rate control circuits are configured to: generate a first rate control command as a command for a given radio sector of the network providing a basic rate control command for common reverse link rate control to mobile stations in the zone; and generating said second rate control command as a supplementary rate control targeting specific mobile stations in said given radio sector command, and this supplementary rate control command may be used in place of the common reverse link rate control. 30. The base station system according to claim 17, wherein the base station system is configured to: transmit the first rate control command on a basic rate control channel; and transmit the first rate control command on one or more supplementary rate control channels the second rate control command. 31. The base station system of claim 17, wherein the base station system is configured to identify a specific reverse link rate control target based on received quality of service feedback from the one or more mobile stations A specific mobile station or a specific group of mobile stations. 32. The base station system of claim 31 , wherein the base station system is configured to dynamically update the mobile station identified as requiring a specific reverse direction in response to changing quality of service feedback from the one or more mobile stations. Those mobile stations that are link rate controlled. 33. A method of controlling a reverse link rate of a mobile station in a wireless communication network, comprising: sending basic rate control commands to provide basic reverse link rate control to one or more mobile stations; and sending supplemental rate control commands to a target mobile station of said one or more mobile stations to override said basic reverse link rate control at said target mobile station as needed. 34. The method of claim 33, wherein sending a basic rate control command comprises sending the basic rate control command on a first licensed channel. 35. The method of claim 34, wherein sending a supplemental rate control command comprises sending the supplemental rate control command on a second licensed channel. 36. The method of claim 33, wherein sending a basic rate control command comprises sending the basic rate control command on a common rate control channel; and wherein sending a supplementary rate control command comprises The supplementary rate control command is sent on a control channel. 37. The method according to claim 33, wherein sending a supplementary rate control command comprises sending a mobile station specific rate control command to the target mobile stations on demand according to the mobile station specific service requirements of each of the target mobile stations . 38. The method of claim 37, further comprising determining the mobile station specific rate control command based at least in part on received quality of service feedback from the target mobile station. 39. The method of claim 37, further comprising: dynamically determining the target mobile stations based on received quality of service feedback from the one or more mobile stations; and identifying which of the mobile stations require supplemental feedback. to link rate control.

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