Service Configuration and Negotiation

2.6.4.1.2 Service Configuration and Negotiation

The set of negotiable service configuration parameters consists of the following:

1. 
   Forward and Reverse Multiplex Options: These control the way in which the information bits of the Forward and Reverse Traffic Channel frames, respectively, are divided into various types of traffic, such as signaling traffic, primary traffic and secondary traffic. Associated with each multiplex option is a rate set which specifies the frame structures and transmission rates supported by the multiplex option (see, for example, 2.2.4.4.1.3 of TIA/EIA/IS-2000-3). The multiplex options which support Supplemental Code Channel transmission and Supplemental Channel transmission on the Forward and Reverse Traffic Channels are included in TIA/EIA/IS-2000-3. Multiplex Options 3 through 16 also indicate the capability for supporting Supplemental Code Channel transmission on the Forward and Reverse Traffic Channels. Invocation of Supplemental Code Channel operation on the Forward or Reverse Traffic Channels occurs by the Supplemental Channel Request Message, the Supplemental Channel Assignment Message, and the General Handoff Direction Message. Invocation of Supplemental Channel operation on the Forward or Reverse Traffic Channels occurs by the Supplemental Channel Request Mini Message, the Extended Supplemental Channel Assignment Message, the Forward Supplemental Channel Assignment Mini Message, and the Reverse Supplemental Channel Assignment Mini Message. The multiplex option used for the Forward Traffic Channel can be the same as that used for the Reverse Traffic Channel, or it can be different.
   
2. 
   Forward and Reverse Traffic Channel Configurations: These include the Radio Configurations and other necessary attributes for the Forward and Reverse Traffic Channels. The Traffic Channel Configuration used can be different for the Forward and Reverse Traffic Channels or it can be the same. However, they are selected from the same Radio Configuration Class.
   
3. 
   Forward and Reverse Traffic Channel Transmission Rates: These are the transmission rates actually used for the Forward and Reverse Traffic Channels respectively. The transmission rates for the Forward Traffic Channel can include all of the transmission rates supported by the rate set associated with the Forward Traffic Channel multiplex option, or a subset of the supported rates. Similarly, the transmission rates used for the Reverse Traffic Channel can include all rates supported by the rate set associated with the Reverse Traffic Channel multiplex option, or a subset of the supported rates. The transmission rates used for the Forward Traffic Channel can be the same as those used for the Reverse Traffic Channel, or they can be different.
   
4. 
   Service Option Connections: These are the services in use on the Traffic Channel. There can be multiple service option connections. It is also possible that there is no service option connection, in which case the mobile station uses the Reverse Traffic Channel as follows:
   

• Sends only signaling traffic on the Reverse Dedicated Control Channel, if only the Dedicated Control Channel is present.

Associated with each service option connection are a service option, a Forward Traffic Channel traffic type, a Reverse Traffic Channel traffic type, and a service option connection reference. The associated service option formally defines the way in which traffic bits are processed by the mobile station and base station. The associated Forward and Reverse Traffic Channel traffic types specify the types of traffic used to support the service option. A service option can require the use of a particular type of traffic, such as primary or secondary, or it can accept more than one traffic type. A service option can be one-way, in which case it can be supported on the Forward Traffic Channel only or the Reverse Traffic Channel only. Alternatively, a service option can be two-way, in which case it can be supported on the Forward and Reverse Traffic Channels simultaneously. Connected service options can also invoke operation on Supplemental Code Channels in either one or both of the Forward and Reverse Traffic Channels by negotiating a multiplex option that supports operation on Supplemental Code Channels (see TIA/EIA/IS-2000-3 for Multiplex options applicable to Supplemental Code Channels), and by using the appropriate Supplemental Code Channel related messages (i.e., the Supplemental Channel Request Message, the Supplemental Channel Assignment Message, and the General Handoff Direction Message). After Supplemental Code Channels have been assigned by the base station, the connected service option can transmit primary and/or secondary traffic on Supplemental Code Channels. Connected service options can also invoke operation on Supplemental Channels in either one or both of the Forward and Reverse Traffic Channels by negotiating a multiplex option that supports operation on Supplemental Channels (see TIA/EIA/IS-2000-3 for Multiplex Options applicable to Supplemental Channel) and by using the appropriate Supplemental Channel related messages (i.e., the Supplemental Channel Request Mini Message, the Extended Supplemental Channel Assignment Message, the Forward Supplemental Channel Assignment Mini Message, the Reverse Supplemental Channel Assignment Mini Message, and the Universal Handoff Direction Message). After Supplemental Channels have been assigned by the base station, the connected service option can transmit primary and/or secondary traffic on Supplemental Channels. The associated service option connection reference provides a means for uniquely identifying the service option connection. The reference serves to resolve ambiguity when there are multiple service option connections in use.

The non-negotiable service configuration parameters are sent from the base station to the mobile stations only, and consists of the following:

1. 
   Reverse Pilot Gating Rate: This controls the way in which the reverse pilot is gated on the Reverse Pilot Channel. The base station specifies the reverse pilot gating rate to be used in the Service Connect Message, the General Handoff Direction Message, and the Universal Handoff Direction Message.
   
2. 
   Forward and Reverse Power Control Parameters: These consist of forward power control operation mode, outer loop power control parameters (Ex. target frame error rate, minimum E_b/N_t setpoint, and maximum E_b/N_t setpoint) for the Forward Fundamental Channel and Forward Dedicated Control Channel, and Power Control Subchannel indicator which indicates where the mobile station is to perform the primary inner loop estimation and the base station is to multiplex the Power Control Subchannel.
   
3. 
   Logical to Physical Mapping: This is a table of logical to physical mapping entries, consisting of service reference identifier, logical resource, physical resource, forward flag, reverse flag, and priority.
   

If the mobile station requests a service configuration that is acceptable to the base station, they both begin using the new service configuration. If the mobile station requests a service configuration that is not acceptable to the base station, the base station can reject the requested service configuration or propose an alternative service configuration. If the base station proposes an alternative service configuration, the mobile station can accept or reject the base station’s proposed service configuration, or propose yet another service configuration. This process, called service negotiation, ends when the mobile station and the base station find a mutually acceptable service configuration, or when either the mobile station or the base station rejects a service configuration proposed by the other.

It is also possible for the base station to request a default service configuration associated with a service option when paging the mobile station and to request new service configurations during Traffic Channel operation. The service negotiation proceeds as described above, but with the roles of the mobile station and base station reversed.

For CDMA mode operation in Band Class 0, the mobile station and base station can also use an alternative method for negotiating a service configuration known as service option negotiation. Service option negotiation is similar to service negotiation, but offers less flexibility for specifying the attributes of the service configuration. During service option negotiation, the base station or the mobile station specifies only which service option is to be used. There is no facility for explicitly specifying the multiplex options, traffic types or transmission rates to be used on the Forward and Reverse Traffic Channels in conjunction with the service option. Instead, implicit service configuration attributes are assumed. In particular, the Forward and Reverse multiplex options and transmission rates are assumed to be the default multiplex options and transmission rates associated with the requested service option, and the traffic type for both the Forward and Reverse Traffic Channels is assumed to be primary traffic; furthermore, a service configuration established using service option negotiation is restricted to having only a single service option connection.

At mobile station origination and termination, the type of negotiation to use, either service negotiation or service option negotiation, is indicated in the Channel Assignment Message. Service negotiation is always used after the mobile station receives an Extended Channel Assignment Message. If a CDMA-to-CDMA hard handoff occurs during the call, the type of negotiation to use following the handoff is indicated in the Extended Handoff Direction Message, the General Handoff Direction Message, or the Universal Handoff Direction Message.

For CDMA mode operation in Band Class 1, only service negotiation is to be used.

The following messages are used to support service negotiation:

1. Service Request Message: The mobile station can use this message to propose a service configuration, or to accept or reject a service configuration proposed in a Service Response Message. The base station can use this message to propose a service configuration, or to reject a service configuration proposed in a Service Response Message.

2. Service Response Message: The mobile station can use this message to accept or reject a service configuration proposed in a Service Request Message, or to propose an alternative service configuration. The base station can use this message to reject a service configuration proposed in a Service Request Message, or to propose an alternative service configuration.

3. Service Connect Message: The base station can use this message to accept a service configuration proposed in a Service Request Message or Service Response Message, and to instruct the mobile station to begin using the service configuration.

4. Service Connect Completion Message: The mobile station can use this message to acknowledge the transition to a new service configuration.

5. Service Option Control Message: The mobile station and base station can use this message to invoke service-option-specific functions.

6. Extended Channel Assignment Message: The base station can use this message to accept or reject the initial service configuration proposed by the mobile station in an Origination Message or a Page Response Message.

The following messages are used to support service option negotiation:

1. Service Option Request Order: The mobile station and base station can use this message either to request a service option or to suggest an alternative service option.

2. Service Option Response Order: The mobile station and base station can use this message to accept or to reject a service option request.

3. Service Option Control Order: The mobile station and base station can use this message to invoke service option specific functions.

The following messages are used to support both service negotiation and service option negotiation:

1. 
   Origination Message: The mobile station can use this message to propose an initial service configuration.
   
2. 
   Channel Assignment Message: The base station can use this message to accept or to reject the initial service configuration proposed by the mobile station in an Origination Message or a Page Response Message and to indicate which type of negotiation, either service negotiation or service option negotiation, is to be used during the call.
   
3. 
   Extended Handoff Direction Message: The base station can use this message to indicate which type of negotiation, either service negotiation or service option negotiation, is to be used following a CDMA-to-CDMA hard handoff.
   
4. 
   General Handoff Direction Message: The base station can use this message to indicate which type of negotiation, either service negotiation or service option negotiation, is to be used following a CDMA-to-CDMA hard handoff. The base station can use this message to accept a service configuration proposed in a Service Request Message or Service Response Message. The base station can also use this message to instruct the mobile station to begin using the service configuration.
   
5. 
   General Page Message: The base station can use this message to propose an initial service configuration.
   
6. 
   Page Response Message: The mobile station can use this message to accept or to reject the initial service configuration proposed by the base station in a General Page Message, or to propose an alternative initial service configuration.
   
7. 
   Status Request Message: The base station can use this message to request service capability information from the mobile station.
   
8. 
   Status Response Message: The mobile station can use this message to return the service capability information requested by the base station in a Status Request Message.
   
9. 
   Extended Status Response Message: The mobile station can use this message to return the service capability information requested by the base station in a Status Request Message.
   
10. 
    Universal Handoff Direction Message: The base station can use this message to indicate which type of negotiation, either service negotiation or service option negotiation, is to be used following a CDMA-to-CDMA hard handoff. The base station can use this message to accept a service configuration proposed in a Service Request Message or Service Response Message. The base station can also use this message to instruct the mobile station to begin using the service configuration.